config MIPS
bool
default y
+ select HAVE_CONTEXT_TRACKING
select HAVE_GENERIC_DMA_COHERENT
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
+ select GENERIC_PCI_IOMAP
select HAVE_ARCH_JUMP_LABEL
select ARCH_WANT_IPC_PARSE_VERSION
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_REL if MODULES
select MODULES_USE_ELF_RELA if MODULES && 64BIT
select CLONE_BACKWARDS
+ select HAVE_DEBUG_STACKOVERFLOW
menu "Machine selection"
- config ZONE_DMA
- bool
-
choice
prompt "System type"
default SGI_IP22
config BCM63XX
bool "Broadcom BCM63XX based boards"
+ select BOOT_RAW
select CEVT_R4K
select CSRC_R4K
select DMA_NONCOHERENT
select IRQ_CPU
select SYS_HAS_CPU_MIPS32_R1
+ select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
+ select NR_CPUS_DEFAULT_2
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_HAS_EARLY_PRINTK
select DMA_NONCOHERENT
select IRQ_CPU
select IRQ_GIC
- select MIPS_CPU_SCACHE
select MIPS_MSC
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
select CSRC_POWERTV
select DMA_NONCOHERENT
select HW_HAS_PCI
- select SYS_HAS_EARLY_PRINTK
select SYS_HAS_CPU_MIPS32_R2
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
Support the Mikrotik(tm) RouterBoard 532 series,
based on the IDT RC32434 SoC.
- config WR_PPMC
- bool "Wind River PPMC board"
- select CEVT_R4K
- select CSRC_R4K
- select IRQ_CPU
- select BOOT_ELF32
- select DMA_NONCOHERENT
- select HW_HAS_PCI
- select PCI_GT64XXX_PCI0
- select SWAP_IO_SPACE
- select SYS_HAS_CPU_MIPS32_R1
- select SYS_HAS_CPU_MIPS32_R2
- select SYS_HAS_CPU_MIPS64_R1
- select SYS_HAS_CPU_NEVADA
- select SYS_HAS_CPU_RM7000
- select SYS_SUPPORTS_32BIT_KERNEL
- select SYS_SUPPORTS_64BIT_KERNEL
- select SYS_SUPPORTS_BIG_ENDIAN
- select SYS_SUPPORTS_LITTLE_ENDIAN
- help
- This enables support for the Wind River MIPS32 4KC PPMC evaluation
- board, which is based on GT64120 bridge chip.
-
- config CAVIUM_OCTEON_SIMULATOR
- bool "Cavium Networks Octeon Simulator"
- select CEVT_R4K
- select 64BIT_PHYS_ADDR
- select DMA_COHERENT
- select SYS_SUPPORTS_64BIT_KERNEL
- select SYS_SUPPORTS_BIG_ENDIAN
- select SYS_SUPPORTS_HOTPLUG_CPU
- select SYS_HAS_CPU_CAVIUM_OCTEON
- select HOLES_IN_ZONE
- help
- The Octeon simulator is software performance model of the Cavium
- Octeon Processor. It supports simulating Octeon processors on x86
- hardware.
-
- config CAVIUM_OCTEON_REFERENCE_BOARD
- bool "Cavium Networks Octeon reference board"
+ config CAVIUM_OCTEON_SOC
+ bool "Cavium Networks Octeon SoC based boards"
select CEVT_R4K
select 64BIT_PHYS_ADDR
select DMA_COHERENT
select SYS_HAS_EARLY_PRINTK
select USB_ARCH_HAS_OHCI if USB_SUPPORT
select USB_ARCH_HAS_EHCI if USB_SUPPORT
+ select SYS_SUPPORTS_ZBOOT
+ select SYS_SUPPORTS_ZBOOT_UART16550
help
Support for systems based on Netlogic XLR and XLS processors.
Say Y here if you have a XLR or XLS based board.
select SYNC_R4K
select SYS_HAS_EARLY_PRINTK
select USE_OF
+ select SYS_SUPPORTS_ZBOOT
+ select SYS_SUPPORTS_ZBOOT_UART16550
help
This board is based on Netlogic XLP Processor.
Say Y here if you have a XLP based board.
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
- depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
+ depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
help
Say Y here to allow turning CPUs off and on. CPUs can be
controlled through /sys/devices/system/cpu.
config CPU_LITTLE_ENDIAN
bool "Little endian"
depends on SYS_SUPPORTS_LITTLE_ENDIAN
- help
endchoice
config MIPS_VPE_LOADER
bool "VPE loader support."
- depends on SYS_SUPPORTS_MULTITHREADING
+ depends on SYS_SUPPORTS_MULTITHREADING && MODULES
select CPU_MIPSR2_IRQ_VI
select CPU_MIPSR2_IRQ_EI
select MIPS_MT
If unsure, say Y. Only embedded should say N here.
+ config CC_STACKPROTECTOR
+ bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
+ help
+ This option turns on the -fstack-protector GCC feature. This
+ feature puts, at the beginning of functions, a canary value on
+ the stack just before the return address, and validates
+ the value just before actually returning. Stack based buffer
+ overflows (that need to overwrite this return address) now also
+ overwrite the canary, which gets detected and the attack is then
+ neutralized via a kernel panic.
+
+ This feature requires gcc version 4.2 or above.
+
config USE_OF
bool
select OF
bool "Support for PCI controller"
depends on HW_HAS_PCI
select PCI_DOMAINS
- select GENERIC_PCI_IOMAP
select NO_GENERIC_PCI_IOPORT_MAP
help
Find out whether you have a PCI motherboard. PCI is the name of a
select CLKEVT_I8253
select MIPS_EXTERNAL_TIMER
+ config ZONE_DMA
+ bool
+
config ZONE_DMA32
bool
#include <bcm63xx_dev_usb_usbd.h>
#include <board_bcm963xx.h>
+ #include <uapi/linux/bcm933xx_hcs.h>
+
#define PFX "board_bcm963xx: "
+ #define HCS_OFFSET_128K 0x20000
+
static struct board_info board;
+ /*
+ * known 3368 boards
+ */
+ #ifdef CONFIG_BCM63XX_CPU_3368
+ static struct board_info __initdata board_cvg834g = {
+ .name = "CVG834G_E15R3921",
+ .expected_cpu_id = 0x3368,
+
+ .has_uart0 = 1,
+ .has_uart1 = 1,
+
+ .has_enet0 = 1,
+ .has_pci = 1,
+
+ .enet0 = {
+ .has_phy = 1,
+ .use_internal_phy = 1,
+ },
+
+ .leds = {
+ {
+ .name = "CVG834G:green:power",
+ .gpio = 37,
+ .default_trigger= "default-on",
+ },
+ },
+
+ .ephy_reset_gpio = 36,
+ .ephy_reset_gpio_flags = GPIOF_INIT_HIGH,
+ };
+ #endif
+
/*
* known 6328 boards
*/
* all boards
*/
static const struct board_info __initconst *bcm963xx_boards[] = {
+ #ifdef CONFIG_BCM63XX_CPU_3368
+ &board_cvg834g,
+ #endif
#ifdef CONFIG_BCM63XX_CPU_6328
&board_96328avng,
#endif
unsigned int i;
u8 *boot_addr, *cfe;
char cfe_version[32];
- char *board_name;
+ char *board_name = NULL;
u32 val;
+ struct bcm_hcs *hcs;
/* read base address of boot chip select (0)
* 6328/6362 do not have MPI but boot from a fixed address
bcm63xx_nvram_init(boot_addr + BCM963XX_NVRAM_OFFSET);
- board_name = bcm63xx_nvram_get_name();
+ if (BCMCPU_IS_3368()) {
+ hcs = (struct bcm_hcs *)boot_addr;
+ board_name = hcs->filename;
+ } else {
+ board_name = bcm63xx_nvram_get_name();
+ }
/* find board by name */
for (i = 0; i < ARRAY_SIZE(bcm963xx_boards); i++) {
if (strncmp(board_name, bcm963xx_boards[i]->name, 16))
!bcm63xx_nvram_get_mac_address(board.enet1.mac_addr))
bcm63xx_enet_register(1, &board.enet1);
+ if (board.has_enetsw &&
+ !bcm63xx_nvram_get_mac_address(board.enetsw.mac_addr))
+ bcm63xx_enetsw_register(&board.enetsw);
+
if (board.has_usbd)
bcm63xx_usbd_register(&board.usbd);
platform_device_register(&bcm63xx_gpio_leds);
+ if (board.ephy_reset_gpio && board.ephy_reset_gpio_flags)
+ gpio_request_one(board.ephy_reset_gpio,
+ board.ephy_reset_gpio_flags, "ephy-reset");
+
return 0;
}
* compile time if only one CPU support is enabled (idea stolen from
* arm mach-types)
*/
+ #define BCM3368_CPU_ID 0x3368
#define BCM6328_CPU_ID 0x6328
#define BCM6338_CPU_ID 0x6338
#define BCM6345_CPU_ID 0x6345
u8 bcm63xx_get_cpu_rev(void);
unsigned int bcm63xx_get_cpu_freq(void);
+ #ifdef CONFIG_BCM63XX_CPU_3368
+ # ifdef bcm63xx_get_cpu_id
+ # undef bcm63xx_get_cpu_id
+ # define bcm63xx_get_cpu_id() __bcm63xx_get_cpu_id()
+ # define BCMCPU_RUNTIME_DETECT
+ # else
+ # define bcm63xx_get_cpu_id() BCM3368_CPU_ID
+ # endif
+ # define BCMCPU_IS_3368() (bcm63xx_get_cpu_id() == BCM3368_CPU_ID)
+ #else
+ # define BCMCPU_IS_3368() (0)
+ #endif
+
#ifdef CONFIG_BCM63XX_CPU_6328
# ifdef bcm63xx_get_cpu_id
# undef bcm63xx_get_cpu_id
#define BCM_6358_RSET_SPI_SIZE 1804
#define BCM_6368_RSET_SPI_SIZE 1804
#define RSET_ENET_SIZE 2048
-#define RSET_ENETDMA_SIZE 2048
+#define RSET_ENETDMA_SIZE 256
+#define RSET_6345_ENETDMA_SIZE 64
+#define RSET_ENETDMAC_SIZE(chans) (16 * (chans))
+#define RSET_ENETDMAS_SIZE(chans) (16 * (chans))
#define RSET_ENETSW_SIZE 65536
#define RSET_UART_SIZE 24
#define RSET_UDC_SIZE 256
#define RSET_XTMDMAS_SIZE(chans) (16 * (chans))
#define RSET_RNG_SIZE 20
+ /*
+ * 3368 register sets base address
+ */
+ #define BCM_3368_DSL_LMEM_BASE (0xdeadbeef)
+ #define BCM_3368_PERF_BASE (0xfff8c000)
+ #define BCM_3368_TIMER_BASE (0xfff8c040)
+ #define BCM_3368_WDT_BASE (0xfff8c080)
+ #define BCM_3368_UART0_BASE (0xfff8c100)
+ #define BCM_3368_UART1_BASE (0xfff8c120)
+ #define BCM_3368_GPIO_BASE (0xfff8c080)
+ #define BCM_3368_SPI_BASE (0xfff8c800)
+ #define BCM_3368_HSSPI_BASE (0xdeadbeef)
+ #define BCM_3368_UDC0_BASE (0xdeadbeef)
+ #define BCM_3368_USBDMA_BASE (0xdeadbeef)
+ #define BCM_3368_OHCI0_BASE (0xdeadbeef)
+ #define BCM_3368_OHCI_PRIV_BASE (0xdeadbeef)
+ #define BCM_3368_USBH_PRIV_BASE (0xdeadbeef)
+ #define BCM_3368_USBD_BASE (0xdeadbeef)
+ #define BCM_3368_MPI_BASE (0xfff80000)
+ #define BCM_3368_PCMCIA_BASE (0xfff80054)
+ #define BCM_3368_PCIE_BASE (0xdeadbeef)
+ #define BCM_3368_SDRAM_REGS_BASE (0xdeadbeef)
+ #define BCM_3368_DSL_BASE (0xdeadbeef)
+ #define BCM_3368_UBUS_BASE (0xdeadbeef)
+ #define BCM_3368_ENET0_BASE (0xfff98000)
+ #define BCM_3368_ENET1_BASE (0xfff98800)
+ #define BCM_3368_ENETDMA_BASE (0xfff99800)
+ #define BCM_3368_ENETDMAC_BASE (0xfff99900)
+ #define BCM_3368_ENETDMAS_BASE (0xfff99a00)
+ #define BCM_3368_ENETSW_BASE (0xdeadbeef)
+ #define BCM_3368_EHCI0_BASE (0xdeadbeef)
+ #define BCM_3368_SDRAM_BASE (0xdeadbeef)
+ #define BCM_3368_MEMC_BASE (0xfff84000)
+ #define BCM_3368_DDR_BASE (0xdeadbeef)
+ #define BCM_3368_M2M_BASE (0xdeadbeef)
+ #define BCM_3368_ATM_BASE (0xdeadbeef)
+ #define BCM_3368_XTM_BASE (0xdeadbeef)
+ #define BCM_3368_XTMDMA_BASE (0xdeadbeef)
+ #define BCM_3368_XTMDMAC_BASE (0xdeadbeef)
+ #define BCM_3368_XTMDMAS_BASE (0xdeadbeef)
+ #define BCM_3368_PCM_BASE (0xfff9c200)
+ #define BCM_3368_PCMDMA_BASE (0xdeadbeef)
+ #define BCM_3368_PCMDMAC_BASE (0xdeadbeef)
+ #define BCM_3368_PCMDMAS_BASE (0xdeadbeef)
+ #define BCM_3368_RNG_BASE (0xdeadbeef)
+ #define BCM_3368_MISC_BASE (0xdeadbeef)
+
/*
* 6328 register sets base address
*/
#define BCM_6328_PCMDMAS_BASE (0xdeadbeef)
#define BCM_6328_RNG_BASE (0xdeadbeef)
#define BCM_6328_MISC_BASE (0xb0001800)
+ #define BCM_6328_OTP_BASE (0xb0000600)
+
/*
* 6338 register sets base address
*/
#define BCM_6345_USBDMA_BASE (0xfffe2800)
#define BCM_6345_ENET0_BASE (0xfffe1800)
#define BCM_6345_ENETDMA_BASE (0xfffe2800)
-#define BCM_6345_ENETDMAC_BASE (0xfffe2900)
+#define BCM_6345_ENETDMAC_BASE (0xfffe2840)
#define BCM_6345_ENETDMAS_BASE (0xfffe2a00)
#define BCM_6345_ENETSW_BASE (0xdeadbeef)
#define BCM_6345_PCMCIA_BASE (0xfffe2028)
#ifdef BCMCPU_RUNTIME_DETECT
return bcm63xx_regs_base[set];
#else
+ #ifdef CONFIG_BCM63XX_CPU_3368
+ __GEN_RSET(3368)
+ #endif
#ifdef CONFIG_BCM63XX_CPU_6328
__GEN_RSET(6328)
#endif
IRQ_XTM_DMA0,
};
+ /*
+ * 3368 irqs
+ */
+ #define BCM_3368_TIMER_IRQ (IRQ_INTERNAL_BASE + 0)
+ #define BCM_3368_SPI_IRQ (IRQ_INTERNAL_BASE + 1)
+ #define BCM_3368_UART0_IRQ (IRQ_INTERNAL_BASE + 2)
+ #define BCM_3368_UART1_IRQ (IRQ_INTERNAL_BASE + 3)
+ #define BCM_3368_DSL_IRQ 0
+ #define BCM_3368_UDC0_IRQ 0
+ #define BCM_3368_OHCI0_IRQ 0
+ #define BCM_3368_ENET0_IRQ (IRQ_INTERNAL_BASE + 8)
+ #define BCM_3368_ENET1_IRQ (IRQ_INTERNAL_BASE + 6)
+ #define BCM_3368_ENET_PHY_IRQ (IRQ_INTERNAL_BASE + 9)
+ #define BCM_3368_ENET0_RXDMA_IRQ (IRQ_INTERNAL_BASE + 15)
+ #define BCM_3368_ENET0_TXDMA_IRQ (IRQ_INTERNAL_BASE + 16)
+ #define BCM_3368_HSSPI_IRQ 0
+ #define BCM_3368_EHCI0_IRQ 0
+ #define BCM_3368_USBD_IRQ 0
+ #define BCM_3368_USBD_RXDMA0_IRQ 0
+ #define BCM_3368_USBD_TXDMA0_IRQ 0
+ #define BCM_3368_USBD_RXDMA1_IRQ 0
+ #define BCM_3368_USBD_TXDMA1_IRQ 0
+ #define BCM_3368_USBD_RXDMA2_IRQ 0
+ #define BCM_3368_USBD_TXDMA2_IRQ 0
+ #define BCM_3368_ENET1_RXDMA_IRQ (IRQ_INTERNAL_BASE + 17)
+ #define BCM_3368_ENET1_TXDMA_IRQ (IRQ_INTERNAL_BASE + 18)
+ #define BCM_3368_PCI_IRQ (IRQ_INTERNAL_BASE + 31)
+ #define BCM_3368_PCMCIA_IRQ 0
+ #define BCM_3368_ATM_IRQ 0
+ #define BCM_3368_ENETSW_RXDMA0_IRQ 0
+ #define BCM_3368_ENETSW_RXDMA1_IRQ 0
+ #define BCM_3368_ENETSW_RXDMA2_IRQ 0
+ #define BCM_3368_ENETSW_RXDMA3_IRQ 0
+ #define BCM_3368_ENETSW_TXDMA0_IRQ 0
+ #define BCM_3368_ENETSW_TXDMA1_IRQ 0
+ #define BCM_3368_ENETSW_TXDMA2_IRQ 0
+ #define BCM_3368_ENETSW_TXDMA3_IRQ 0
+ #define BCM_3368_XTM_IRQ 0
+ #define BCM_3368_XTM_DMA0_IRQ 0
+
+ #define BCM_3368_EXT_IRQ0 (IRQ_INTERNAL_BASE + 25)
+ #define BCM_3368_EXT_IRQ1 (IRQ_INTERNAL_BASE + 26)
+ #define BCM_3368_EXT_IRQ2 (IRQ_INTERNAL_BASE + 27)
+ #define BCM_3368_EXT_IRQ3 (IRQ_INTERNAL_BASE + 28)
+
+
/*
* 6328 irqs
*/
/* Clock Control register */
#define PERF_CKCTL_REG 0x4
+ #define CKCTL_3368_MAC_EN (1 << 3)
+ #define CKCTL_3368_TC_EN (1 << 5)
+ #define CKCTL_3368_US_TOP_EN (1 << 6)
+ #define CKCTL_3368_DS_TOP_EN (1 << 7)
+ #define CKCTL_3368_APM_EN (1 << 8)
+ #define CKCTL_3368_SPI_EN (1 << 9)
+ #define CKCTL_3368_USBS_EN (1 << 10)
+ #define CKCTL_3368_BMU_EN (1 << 11)
+ #define CKCTL_3368_PCM_EN (1 << 12)
+ #define CKCTL_3368_NTP_EN (1 << 13)
+ #define CKCTL_3368_ACP_B_EN (1 << 14)
+ #define CKCTL_3368_ACP_A_EN (1 << 15)
+ #define CKCTL_3368_EMUSB_EN (1 << 17)
+ #define CKCTL_3368_ENET0_EN (1 << 18)
+ #define CKCTL_3368_ENET1_EN (1 << 19)
+ #define CKCTL_3368_USBU_EN (1 << 20)
+ #define CKCTL_3368_EPHY_EN (1 << 21)
+
+ #define CKCTL_3368_ALL_SAFE_EN (CKCTL_3368_MAC_EN | \
+ CKCTL_3368_TC_EN | \
+ CKCTL_3368_US_TOP_EN | \
+ CKCTL_3368_DS_TOP_EN | \
+ CKCTL_3368_APM_EN | \
+ CKCTL_3368_SPI_EN | \
+ CKCTL_3368_USBS_EN | \
+ CKCTL_3368_BMU_EN | \
+ CKCTL_3368_PCM_EN | \
+ CKCTL_3368_NTP_EN | \
+ CKCTL_3368_ACP_B_EN | \
+ CKCTL_3368_ACP_A_EN | \
+ CKCTL_3368_EMUSB_EN | \
+ CKCTL_3368_USBU_EN)
+
#define CKCTL_6328_PHYMIPS_EN (1 << 0)
#define CKCTL_6328_ADSL_QPROC_EN (1 << 1)
#define CKCTL_6328_ADSL_AFE_EN (1 << 2)
#define SYS_PLL_SOFT_RESET 0x1
/* Interrupt Mask register */
+ #define PERF_IRQMASK_3368_REG 0xc
#define PERF_IRQMASK_6328_REG 0x20
#define PERF_IRQMASK_6338_REG 0xc
#define PERF_IRQMASK_6345_REG 0xc
#define PERF_IRQMASK_6368_REG 0x20
/* Interrupt Status register */
+ #define PERF_IRQSTAT_3368_REG 0x10
#define PERF_IRQSTAT_6328_REG 0x28
#define PERF_IRQSTAT_6338_REG 0x10
#define PERF_IRQSTAT_6345_REG 0x10
#define PERF_IRQSTAT_6368_REG 0x28
/* External Interrupt Configuration register */
+ #define PERF_EXTIRQ_CFG_REG_3368 0x14
#define PERF_EXTIRQ_CFG_REG_6328 0x18
#define PERF_EXTIRQ_CFG_REG_6338 0x14
#define PERF_EXTIRQ_CFG_REG_6345 0x14
#define PERF_SOFTRESET_6362_REG 0x10
#define PERF_SOFTRESET_6368_REG 0x10
+ #define SOFTRESET_3368_SPI_MASK (1 << 0)
+ #define SOFTRESET_3368_ENET_MASK (1 << 2)
+ #define SOFTRESET_3368_MPI_MASK (1 << 3)
+ #define SOFTRESET_3368_EPHY_MASK (1 << 6)
+ #define SOFTRESET_3368_USBS_MASK (1 << 11)
+ #define SOFTRESET_3368_PCM_MASK (1 << 13)
+
#define SOFTRESET_6328_SPI_MASK (1 << 0)
#define SOFTRESET_6328_EPHY_MASK (1 << 1)
#define SOFTRESET_6328_SAR_MASK (1 << 2)
/*************************************************************************
* _REG relative to RSET_ENETDMA
*************************************************************************/
+#define ENETDMA_CHAN_WIDTH 0x10
+#define ENETDMA_6345_CHAN_WIDTH 0x40
/* Controller Configuration Register */
#define ENETDMA_CFG_REG (0x0)
/* State Ram Word 4 */
#define ENETDMA_SRAM4_REG(x) (0x20c + (x) * 0x10)
+/* Broadcom 6345 ENET DMA definitions */
+#define ENETDMA_6345_CHANCFG_REG (0x00)
+
+#define ENETDMA_6345_MAXBURST_REG (0x40)
+
+#define ENETDMA_6345_RSTART_REG (0x08)
+
+#define ENETDMA_6345_LEN_REG (0x0C)
+
+#define ENETDMA_6345_IR_REG (0x14)
+
+#define ENETDMA_6345_IRMASK_REG (0x18)
+
+#define ENETDMA_6345_FC_REG (0x1C)
+
+#define ENETDMA_6345_BUFALLOC_REG (0x20)
+
+/* Shift down for EOP, SOP and WRAP bits */
+#define ENETDMA_6345_DESC_SHIFT (3)
/*************************************************************************
* _REG relative to RSET_ENETDMAC
*************************************************************************/
/* Channel Configuration register */
-#define ENETDMAC_CHANCFG_REG(x) ((x) * 0x10)
+#define ENETDMAC_CHANCFG_REG (0x0)
#define ENETDMAC_CHANCFG_EN_SHIFT 0
#define ENETDMAC_CHANCFG_EN_MASK (1 << ENETDMAC_CHANCFG_EN_SHIFT)
#define ENETDMAC_CHANCFG_PKTHALT_SHIFT 1
#define ENETDMAC_CHANCFG_PKTHALT_MASK (1 << ENETDMAC_CHANCFG_PKTHALT_SHIFT)
#define ENETDMAC_CHANCFG_BUFHALT_SHIFT 2
#define ENETDMAC_CHANCFG_BUFHALT_MASK (1 << ENETDMAC_CHANCFG_BUFHALT_SHIFT)
+#define ENETDMAC_CHANCFG_CHAINING_SHIFT 2
+#define ENETDMAC_CHANCFG_CHAINING_MASK (1 << ENETDMAC_CHANCFG_CHAINING_SHIFT)
+#define ENETDMAC_CHANCFG_WRAP_EN_SHIFT 3
+#define ENETDMAC_CHANCFG_WRAP_EN_MASK (1 << ENETDMAC_CHANCFG_WRAP_EN_SHIFT)
+#define ENETDMAC_CHANCFG_FLOWC_EN_SHIFT 4
+#define ENETDMAC_CHANCFG_FLOWC_EN_MASK (1 << ENETDMAC_CHANCFG_FLOWC_EN_SHIFT)
/* Interrupt Control/Status register */
-#define ENETDMAC_IR_REG(x) (0x4 + (x) * 0x10)
+#define ENETDMAC_IR_REG (0x4)
#define ENETDMAC_IR_BUFDONE_MASK (1 << 0)
#define ENETDMAC_IR_PKTDONE_MASK (1 << 1)
#define ENETDMAC_IR_NOTOWNER_MASK (1 << 2)
/* Interrupt Mask register */
-#define ENETDMAC_IRMASK_REG(x) (0x8 + (x) * 0x10)
+#define ENETDMAC_IRMASK_REG (0x8)
/* Maximum Burst Length */
-#define ENETDMAC_MAXBURST_REG(x) (0xc + (x) * 0x10)
+#define ENETDMAC_MAXBURST_REG (0xc)
/*************************************************************************
*************************************************************************/
/* Ring Start Address register */
-#define ENETDMAS_RSTART_REG(x) ((x) * 0x10)
+#define ENETDMAS_RSTART_REG (0x0)
/* State Ram Word 2 */
-#define ENETDMAS_SRAM2_REG(x) (0x4 + (x) * 0x10)
+#define ENETDMAS_SRAM2_REG (0x4)
/* State Ram Word 3 */
-#define ENETDMAS_SRAM3_REG(x) (0x8 + (x) * 0x10)
+#define ENETDMAS_SRAM3_REG (0x8)
/* State Ram Word 4 */
-#define ENETDMAS_SRAM4_REG(x) (0xc + (x) * 0x10)
+#define ENETDMAS_SRAM4_REG (0xc)
/*************************************************************************
* _REG relative to RSET_ENETSW
*************************************************************************/
+/* Port traffic control */
+#define ENETSW_PTCTRL_REG(x) (0x0 + (x))
+#define ENETSW_PTCTRL_RXDIS_MASK (1 << 0)
+#define ENETSW_PTCTRL_TXDIS_MASK (1 << 1)
+
+/* Switch mode register */
+#define ENETSW_SWMODE_REG (0xb)
+#define ENETSW_SWMODE_FWD_EN_MASK (1 << 1)
+
+/* IMP override Register */
+#define ENETSW_IMPOV_REG (0xe)
+#define ENETSW_IMPOV_FORCE_MASK (1 << 7)
+#define ENETSW_IMPOV_TXFLOW_MASK (1 << 5)
+#define ENETSW_IMPOV_RXFLOW_MASK (1 << 4)
+#define ENETSW_IMPOV_1000_MASK (1 << 3)
+#define ENETSW_IMPOV_100_MASK (1 << 2)
+#define ENETSW_IMPOV_FDX_MASK (1 << 1)
+#define ENETSW_IMPOV_LINKUP_MASK (1 << 0)
+
+/* Port override Register */
+#define ENETSW_PORTOV_REG(x) (0x58 + (x))
+#define ENETSW_PORTOV_ENABLE_MASK (1 << 6)
+#define ENETSW_PORTOV_TXFLOW_MASK (1 << 5)
+#define ENETSW_PORTOV_RXFLOW_MASK (1 << 4)
+#define ENETSW_PORTOV_1000_MASK (1 << 3)
+#define ENETSW_PORTOV_100_MASK (1 << 2)
+#define ENETSW_PORTOV_FDX_MASK (1 << 1)
+#define ENETSW_PORTOV_LINKUP_MASK (1 << 0)
+
+/* MDIO control register */
+#define ENETSW_MDIOC_REG (0xb0)
+#define ENETSW_MDIOC_EXT_MASK (1 << 16)
+#define ENETSW_MDIOC_REG_SHIFT 20
+#define ENETSW_MDIOC_PHYID_SHIFT 25
+#define ENETSW_MDIOC_RD_MASK (1 << 30)
+#define ENETSW_MDIOC_WR_MASK (1 << 31)
+
+/* MDIO data register */
+#define ENETSW_MDIOD_REG (0xb4)
+
+/* Global Management Configuration Register */
+#define ENETSW_GMCR_REG (0x200)
+#define ENETSW_GMCR_RST_MIB_MASK (1 << 0)
+
/* MIB register */
#define ENETSW_MIB_REG(x) (0x2800 + (x) * 4)
#define ENETSW_MIB_REG_COUNT 47
+/* Jumbo control register port mask register */
+#define ENETSW_JMBCTL_PORT_REG (0x4004)
+
+/* Jumbo control mib good frame register */
+#define ENETSW_JMBCTL_MAXSIZE_REG (0x4008)
+
/*************************************************************************
* _REG relative to RSET_OHCI_PRIV
#define SPI_6348_RX_DATA 0x80
#define SPI_6348_RX_DATA_SIZE 0x3f
- /* BCM 6358/6262/6368 SPI core */
+ /* BCM 3368/6358/6262/6368 SPI core */
#define SPI_6358_MSG_CTL 0x00 /* 16-bits register */
#define SPI_6358_MSG_CTL_WIDTH 16
#define SPI_6358_MSG_DATA 0x02
#define PCIE_DEVICE_OFFSET 0x8000
+ /*************************************************************************
+ * _REG relative to RSET_OTP
+ *************************************************************************/
+
+ #define OTP_USER_BITS_6328_REG(i) (0x20 + (i) * 4)
+ #define OTP_6328_REG3_TP1_DISABLED BIT(9)
+
#endif /* BCM63XX_REGS_H_ */
/* enabled feature/device */
unsigned int has_enet0:1;
unsigned int has_enet1:1;
+ unsigned int has_enetsw:1;
unsigned int has_pci:1;
unsigned int has_pccard:1;
unsigned int has_ohci0:1;
/* ethernet config */
struct bcm63xx_enet_platform_data enet0;
struct bcm63xx_enet_platform_data enet1;
+ struct bcm63xx_enetsw_platform_data enetsw;
/* USB config */
struct bcm63xx_usbd_platform_data usbd;
/* GPIO LEDs */
struct gpio_led leds[5];
+
+ /* External PHY reset GPIO */
+ unsigned int ephy_reset_gpio;
+
+ /* External PHY reset GPIO flags from gpio.h */
+ unsigned long ephy_reset_gpio_flags;
};
#endif /* ! BOARD_BCM963XX_H_ */
stack_done:
lw t0, TI_FLAGS($28) # syscall tracing enabled?
- li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
+ li t1, _TIF_WORK_SYSCALL_ENTRY
and t0, t1
bnez t0, syscall_trace_entry # -> yes
/*
* For FPU affinity scheduling on MIPS MT processors, we need to
* intercept sys_sched_xxxaffinity() calls until we get a proper hook
- * in kernel/sched.c. Considered only temporary we only support these
- * hooks for the 32-bit kernel - there is no MIPS64 MT processor atm.
+ * in kernel/sched/core.c. Considered only temporary we only support
+ * these hooks for the 32-bit kernel - there is no MIPS64 MT processor
+ * atm.
*/
sys mipsmt_sys_sched_setaffinity 3
sys mipsmt_sys_sched_getaffinity 3
config PATA_OCTEON_CF
tristate "OCTEON Boot Bus Compact Flash support"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
help
This option enables a polled compact flash driver for use with
compact flash cards attached to the OCTEON boot bus.
config SATA_RCAR
tristate "Renesas R-Car SATA support"
- depends on ARCH_SHMOBILE && ARCH_R8A7779
help
This option enables support for Renesas R-Car Serial ATA.
config EDAC_E752X
tristate "Intel e752x (e7520, e7525, e7320) and 3100"
- depends on EDAC_MM_EDAC && PCI && X86 && HOTPLUG
+ depends on EDAC_MM_EDAC && PCI && X86
help
Support for error detection and correction on the Intel
E7520, E7525, E7320 server chipsets.
config EDAC_OCTEON_L2C
tristate "Cavium Octeon Secondary Caches (L2C)"
- depends on EDAC_MM_EDAC && CPU_CAVIUM_OCTEON
+ depends on EDAC_MM_EDAC && CAVIUM_OCTEON_SOC
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
config EDAC_OCTEON_LMC
tristate "Cavium Octeon DRAM Memory Controller (LMC)"
- depends on EDAC_MM_EDAC && CPU_CAVIUM_OCTEON
+ depends on EDAC_MM_EDAC && CAVIUM_OCTEON_SOC
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
config EDAC_OCTEON_PCI
tristate "Cavium Octeon PCI Controller"
- depends on EDAC_MM_EDAC && PCI && CPU_CAVIUM_OCTEON
+ depends on EDAC_MM_EDAC && PCI && CAVIUM_OCTEON_SOC
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
Lynx Point-LP (PCH)
Avoton (SOC)
Wellsburg (PCH)
+ Coleto Creek (PCH)
This driver can also be built as a module. If so, the module
will be called i2c-i801.
ATI SB700/SP5100
ATI SB800
AMD Hudson-2
+ AMD CZ
Serverworks OSB4
Serverworks CSB5
Serverworks CSB6
This driver can also be built as a module. If so, the module
will be called i2c-imx.
-config I2C_INTEL_MID
- tristate "Intel Moorestown/Medfield Platform I2C controller"
- depends on PCI
- help
- Say Y here if you have an Intel Moorestown/Medfield platform I2C
- controller.
-
- This support is also available as a module. If so, the module
- will be called i2c-intel-mid.
-
config I2C_IOP3XX
tristate "Intel IOPx3xx and IXP4xx on-chip I2C interface"
depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX || ARCH_IOP13XX
This driver can also be built as a module. If so, the module
will be called i2c-iop3xx.
+config I2C_KEMPLD
+ tristate "Kontron COM I2C Controller"
+ depends on MFD_KEMPLD
+ help
+ This enables support for the I2C bus interface on some Kontron ETX
+ and COMexpress (ETXexpress) modules.
+
+ This driver can also be built as a module. If so, the module
+ will be called i2c-kempld.
+
config I2C_MPC
tristate "MPC107/824x/85xx/512x/52xx/83xx/86xx"
depends on PPC
config I2C_MV64XXX
tristate "Marvell mv64xxx I2C Controller"
- depends on (MV64X60 || PLAT_ORION)
+ depends on (MV64X60 || PLAT_ORION || ARCH_SUNXI)
help
If you say yes to this option, support will be included for the
built-in I2C interface on the Marvell 64xxx line of host bridges.
+ This driver is also used for Allwinner SoCs I2C controllers.
This driver can also be built as a module. If so, the module
will be called i2c-mv64xxx.
config I2C_SIRF
tristate "CSR SiRFprimaII I2C interface"
- depends on ARCH_PRIMA2
+ depends on ARCH_SIRF
help
If you say yes to this option, support will be included for the
CSR SiRFprimaII I2C interface.
This driver can also be built as a module. If so, the module
will be called i2c-versatile.
+config I2C_WMT
+ tristate "Wondermedia WM8xxx SoC I2C bus support"
+ depends on ARCH_VT8500
+ help
+ Say yes if you want to support the I2C bus on Wondermedia 8xxx-series
+ SoCs.
+
+ This driver can also be built as a module. If so, the module will be
+ called i2c-wmt.
+
config I2C_OCTEON
tristate "Cavium OCTEON I2C bus support"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
help
Say yes if you want to support the I2C serial bus on Cavium
OCTEON SOC.
config MDIO_OCTEON
tristate "Support for MDIO buses on Octeon SOCs"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
default y
help
If in doubt, say Y.
+config MDIO_SUN4I
+ tristate "Allwinner sun4i MDIO interface support"
+ depends on ARCH_SUNXI
+ select REGULATOR
+ select REGULATOR_FIXED_VOLTAGE
+ help
+ This driver supports the MDIO interface found in the network
+ interface units of the Allwinner SoC that have an EMAC (A10,
+ A12, A10s, etc.)
+
config MDIO_BUS_MUX
tristate
depends on OF_MDIO
*/
#include <linux/stat.h>
+#include <linux/module.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/rio_ids.h>
#include <linux/delay.h>
+
+ #include <asm/page.h>
#include "../rio.h"
#define LOCAL_RTE_CONF_DESTID_SEL 0x010070
static DEVICE_ATTR(errlog, S_IRUGO, idtg2_show_errlog, NULL);
-static int idtg2_sysfs(struct rio_dev *rdev, int create)
+static int idtg2_sysfs(struct rio_dev *rdev, bool create)
{
struct device *dev = &rdev->dev;
int err = 0;
- if (create == RIO_SW_SYSFS_CREATE) {
+ if (create) {
/* Initialize sysfs entries */
err = device_create_file(dev, &dev_attr_errlog);
if (err)
return err;
}
-static int idtg2_switch_init(struct rio_dev *rdev, int do_enum)
+static struct rio_switch_ops idtg2_switch_ops = {
+ .owner = THIS_MODULE,
+ .add_entry = idtg2_route_add_entry,
+ .get_entry = idtg2_route_get_entry,
+ .clr_table = idtg2_route_clr_table,
+ .set_domain = idtg2_set_domain,
+ .get_domain = idtg2_get_domain,
+ .em_init = idtg2_em_init,
+ .em_handle = idtg2_em_handler,
+};
+
+static int idtg2_probe(struct rio_dev *rdev, const struct rio_device_id *id)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
- rdev->rswitch->add_entry = idtg2_route_add_entry;
- rdev->rswitch->get_entry = idtg2_route_get_entry;
- rdev->rswitch->clr_table = idtg2_route_clr_table;
- rdev->rswitch->set_domain = idtg2_set_domain;
- rdev->rswitch->get_domain = idtg2_get_domain;
- rdev->rswitch->em_init = idtg2_em_init;
- rdev->rswitch->em_handle = idtg2_em_handler;
- rdev->rswitch->sw_sysfs = idtg2_sysfs;
-
- if (do_enum) {
+
+ spin_lock(&rdev->rswitch->lock);
+
+ if (rdev->rswitch->ops) {
+ spin_unlock(&rdev->rswitch->lock);
+ return -EINVAL;
+ }
+
+ rdev->rswitch->ops = &idtg2_switch_ops;
+
+ if (rdev->do_enum) {
/* Ensure that default routing is disabled on startup */
rio_write_config_32(rdev,
RIO_STD_RTE_DEFAULT_PORT, IDT_NO_ROUTE);
}
+ /* Create device-specific sysfs attributes */
+ idtg2_sysfs(rdev, true);
+
+ spin_unlock(&rdev->rswitch->lock);
return 0;
}
-DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1848, idtg2_switch_init);
-DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1616, idtg2_switch_init);
-DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTVPS1616, idtg2_switch_init);
-DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTSPS1616, idtg2_switch_init);
-DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1432, idtg2_switch_init);
+static void idtg2_remove(struct rio_dev *rdev)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ spin_lock(&rdev->rswitch->lock);
+ if (rdev->rswitch->ops != &idtg2_switch_ops) {
+ spin_unlock(&rdev->rswitch->lock);
+ return;
+ }
+ rdev->rswitch->ops = NULL;
+
+ /* Remove device-specific sysfs attributes */
+ idtg2_sysfs(rdev, false);
+
+ spin_unlock(&rdev->rswitch->lock);
+}
+
+static struct rio_device_id idtg2_id_table[] = {
+ {RIO_DEVICE(RIO_DID_IDTCPS1848, RIO_VID_IDT)},
+ {RIO_DEVICE(RIO_DID_IDTCPS1616, RIO_VID_IDT)},
+ {RIO_DEVICE(RIO_DID_IDTVPS1616, RIO_VID_IDT)},
+ {RIO_DEVICE(RIO_DID_IDTSPS1616, RIO_VID_IDT)},
+ {RIO_DEVICE(RIO_DID_IDTCPS1432, RIO_VID_IDT)},
+ { 0, } /* terminate list */
+};
+
+static struct rio_driver idtg2_driver = {
+ .name = "idt_gen2",
+ .id_table = idtg2_id_table,
+ .probe = idtg2_probe,
+ .remove = idtg2_remove,
+};
+
+static int __init idtg2_init(void)
+{
+ return rio_register_driver(&idtg2_driver);
+}
+
+static void __exit idtg2_exit(void)
+{
+ pr_debug("RIO: %s\n", __func__);
+ rio_unregister_driver(&idtg2_driver);
+ pr_debug("RIO: %s done\n", __func__);
+}
+
+device_initcall(idtg2_init);
+module_exit(idtg2_exit);
+
+MODULE_DESCRIPTION("IDT CPS Gen.2 Serial RapidIO switch family driver");
+MODULE_AUTHOR("Integrated Device Technology, Inc.");
+MODULE_LICENSE("GPL");
config SPI_OCTEON
tristate "Cavium OCTEON SPI controller"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
help
SPI host driver for the hardware found on some Cavium OCTEON
SOCs.
config SPI_SIRF
tristate "CSR SiRFprimaII SPI controller"
- depends on ARCH_PRIMA2
+ depends on ARCH_SIRF
select SPI_BITBANG
help
SPI driver for CSR SiRFprimaII SoCs
config USB_XHCI_HCD
tristate "xHCI HCD (USB 3.0) support"
- depends on USB_ARCH_HAS_XHCI
---help---
The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
"SuperSpeed" host controller hardware.
config USB_EHCI_HCD
tristate "EHCI HCD (USB 2.0) support"
- depends on USB_ARCH_HAS_EHCI
---help---
The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
"high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
has an external PHY.
config USB_EHCI_TEGRA
- boolean "NVIDIA Tegra HCD support"
+ tristate "NVIDIA Tegra HCD support"
depends on ARCH_TEGRA
select USB_EHCI_ROOT_HUB_TT
select USB_PHY
config USB_EHCI_S5P
tristate "EHCI support for Samsung S5P/EXYNOS SoC Series"
- depends on PLAT_S5P
+ depends on PLAT_S5P || ARCH_EXYNOS
help
Enable support for the Samsung S5Pxxxx and Exynos3/4/5 SOC's
on-chip EHCI controller.
config USB_OCTEON_EHCI
bool "Octeon on-chip EHCI support"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
default n
select USB_EHCI_BIG_ENDIAN_MMIO
help
To compile this driver as a module, choose M here: the
module will be called isp1362-hcd.
+config USB_FUSBH200_HCD
+ tristate "FUSBH200 HCD support"
+ depends on USB
+ default N
+ ---help---
+ Faraday FUSBH200 is designed to meet USB2.0 EHCI specification
+ with minor modification.
+
+ To compile this driver as a module, choose M here: the
+ module will be called fusbh200-hcd.
+
config USB_OHCI_HCD
- tristate "OHCI HCD support"
- depends on USB_ARCH_HAS_OHCI
+ tristate "OHCI HCD (USB 1.1) support"
select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
depends on USB_ISP1301 || !ARCH_LPC32XX
---help---
default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE
config USB_OHCI_HCD_PCI
- bool "OHCI support for PCI-bus USB controllers"
- depends on PCI && (STB03xxx || PPC_MPC52xx || USB_OHCI_HCD_PPC_OF)
+ tristate "OHCI support for PCI-bus USB controllers"
+ depends on PCI
default y
select USB_OHCI_LITTLE_ENDIAN
---help---
It is needed for low-speed USB 1.0 device support.
config USB_OHCI_HCD_PLATFORM
- bool "Generic OHCI driver for a platform device"
+ tristate "Generic OHCI driver for a platform device"
default n
---help---
Adds an OHCI host driver for a generic platform device, which
config USB_OCTEON_OHCI
bool "Octeon on-chip OHCI support"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
default USB_OCTEON_EHCI
select USB_OHCI_BIG_ENDIAN_MMIO
select USB_OHCI_LITTLE_ENDIAN
To compile this driver as a module, choose M here: the
module will be called dw_wdt.
-config MPCORE_WATCHDOG
- tristate "MPcore watchdog"
- depends on HAVE_ARM_TWD
- help
- Watchdog timer embedded into the MPcore system.
-
- To compile this driver as a module, choose M here: the
- module will be called mpcore_wdt.
-
config EP93XX_WATCHDOG
tristate "EP93xx Watchdog"
depends on ARCH_EP93XX
config ORION_WATCHDOG
tristate "Orion watchdog"
- depends on ARCH_ORION5X || ARCH_KIRKWOOD
+ depends on ARCH_ORION5X || ARCH_KIRKWOOD || ARCH_DOVE
select WATCHDOG_CORE
help
Say Y here if to include support for the watchdog timer
To compile this driver as a module, choose M here: the module will be
called hpwdt.
+config KEMPLD_WDT
+ tristate "Kontron COM Watchdog Timer"
+ depends on MFD_KEMPLD
+ select WATCHDOG_CORE
+ help
+ Support for the PLD watchdog on some Kontron ETX and COMexpress
+ (ETXexpress) modules
+
+ This driver can also be built as a module. If so, the module will be
+ called kempld_wdt.
+
config HPWDT_NMI_DECODING
bool "NMI decoding support for the HP ProLiant iLO2+ Hardware Watchdog Timer"
depends on HP_WATCHDOG
config OCTEON_WDT
tristate "Cavium OCTEON SOC family Watchdog Timer"
- depends on CPU_CAVIUM_OCTEON
+ depends on CAVIUM_OCTEON_SOC
default y
select EXPORT_UASM if OCTEON_WDT = m
help
To compile this driver as a loadable module, choose M here.
The module will be called bcm63xx_wdt.
+config BCM2835_WDT
+ tristate "Broadcom BCM2835 hardware watchdog"
+ depends on ARCH_BCM2835
+ select WATCHDOG_CORE
+ help
+ Watchdog driver for the built in watchdog hardware in Broadcom
+ BCM2835 SoC.
+
+ To compile this driver as a loadable module, choose M here.
+ The module will be called bcm2835_wdt.
+
config LANTIQ_WDT
tristate "Lantiq SoC watchdog"
depends on LANTIQ
The value can be overridden by the wdt_period command-line parameter.
+config MEN_A21_WDT
+ tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
+ select WATCHDOG_CORE
+ depends on GPIOLIB
+ help
+ Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
+
+ The driver can also be built as a module. If so, the module will be
+ called mena21_wdt.
+
+ If unsure select N here.
+
# PPC64 Architecture
config WATCHDOG_RTAS
header-y += ax25.h
header-y += b1lli.h
header-y += baycom.h
+ header-y += bcm933xx_hcs.h
header-y += bfs_fs.h
header-y += binfmts.h
header-y += blkpg.h
header-y += net_tstamp.h
header-y += netconf.h
header-y += netdevice.h
+header-y += netlink_diag.h
header-y += netfilter.h
header-y += netfilter_arp.h
header-y += netfilter_bridge.h
#include <linux/smp.h>
#include <linux/fs.h>
-#define IRQ_DOMAIN_MAP_LEGACY 0 /* driver allocated fixed range of irqs.
- * ie. legacy 8259, gets irqs 1..15 */
-#define IRQ_DOMAIN_MAP_NOMAP 1 /* no fast reverse mapping */
-#define IRQ_DOMAIN_MAP_LINEAR 2 /* linear map of interrupts */
-#define IRQ_DOMAIN_MAP_TREE 3 /* radix tree */
-
static LIST_HEAD(irq_domain_list);
static DEFINE_MUTEX(irq_domain_mutex);
static struct irq_domain *irq_default_domain;
/**
- * irq_domain_alloc() - Allocate a new irq_domain data structure
+ * __irq_domain_add() - Allocate a new irq_domain data structure
* @of_node: optional device-tree node of the interrupt controller
- * @revmap_type: type of reverse mapping to use
+ * @size: Size of linear map; 0 for radix mapping only
+ * @direct_max: Maximum value of direct maps; Use ~0 for no limit; 0 for no
+ * direct mapping
* @ops: map/unmap domain callbacks
* @host_data: Controller private data pointer
*
* register allocated irq_domain with irq_domain_register(). Returns pointer
* to IRQ domain, or NULL on failure.
*/
-static struct irq_domain *irq_domain_alloc(struct device_node *of_node,
- unsigned int revmap_type,
- const struct irq_domain_ops *ops,
- void *host_data)
+struct irq_domain *__irq_domain_add(struct device_node *of_node, int size,
+ irq_hw_number_t hwirq_max, int direct_max,
+ const struct irq_domain_ops *ops,
+ void *host_data)
{
struct irq_domain *domain;
- domain = kzalloc_node(sizeof(*domain), GFP_KERNEL,
- of_node_to_nid(of_node));
+ domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
+ GFP_KERNEL, of_node_to_nid(of_node));
if (WARN_ON(!domain))
return NULL;
/* Fill structure */
- domain->revmap_type = revmap_type;
+ INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);
domain->ops = ops;
domain->host_data = host_data;
domain->of_node = of_node_get(of_node);
+ domain->hwirq_max = hwirq_max;
+ domain->revmap_size = size;
+ domain->revmap_direct_max_irq = direct_max;
- return domain;
-}
-
-static void irq_domain_free(struct irq_domain *domain)
-{
- of_node_put(domain->of_node);
- kfree(domain);
-}
-
-static void irq_domain_add(struct irq_domain *domain)
-{
mutex_lock(&irq_domain_mutex);
list_add(&domain->link, &irq_domain_list);
mutex_unlock(&irq_domain_mutex);
- pr_debug("Allocated domain of type %d @0x%p\n",
- domain->revmap_type, domain);
+
+ pr_debug("Added domain %s\n", domain->name);
+ return domain;
}
+EXPORT_SYMBOL_GPL(__irq_domain_add);
/**
* irq_domain_remove() - Remove an irq domain.
{
mutex_lock(&irq_domain_mutex);
- switch (domain->revmap_type) {
- case IRQ_DOMAIN_MAP_LEGACY:
- /*
- * Legacy domains don't manage their own irq_desc
- * allocations, we expect the caller to handle irq_desc
- * freeing on their own.
- */
- break;
- case IRQ_DOMAIN_MAP_TREE:
- /*
- * radix_tree_delete() takes care of destroying the root
- * node when all entries are removed. Shout if there are
- * any mappings left.
- */
- WARN_ON(domain->revmap_data.tree.height);
- break;
- case IRQ_DOMAIN_MAP_LINEAR:
- kfree(domain->revmap_data.linear.revmap);
- domain->revmap_data.linear.size = 0;
- break;
- case IRQ_DOMAIN_MAP_NOMAP:
- break;
- }
+ /*
+ * radix_tree_delete() takes care of destroying the root
+ * node when all entries are removed. Shout if there are
+ * any mappings left.
+ */
+ WARN_ON(domain->revmap_tree.height);
list_del(&domain->link);
mutex_unlock(&irq_domain_mutex);
- pr_debug("Removed domain of type %d @0x%p\n",
- domain->revmap_type, domain);
+ pr_debug("Removed domain %s\n", domain->name);
- irq_domain_free(domain);
+ of_node_put(domain->of_node);
+ kfree(domain);
}
EXPORT_SYMBOL_GPL(irq_domain_remove);
-static unsigned int irq_domain_legacy_revmap(struct irq_domain *domain,
- irq_hw_number_t hwirq)
-{
- irq_hw_number_t first_hwirq = domain->revmap_data.legacy.first_hwirq;
- int size = domain->revmap_data.legacy.size;
-
- if (WARN_ON(hwirq < first_hwirq || hwirq >= first_hwirq + size))
- return 0;
- return hwirq - first_hwirq + domain->revmap_data.legacy.first_irq;
-}
-
/**
- * irq_domain_add_simple() - Allocate and register a simple irq_domain.
+ * irq_domain_add_simple() - Register an irq_domain and optionally map a range of irqs
* @of_node: pointer to interrupt controller's device tree node.
* @size: total number of irqs in mapping
* @first_irq: first number of irq block assigned to the domain,
- * pass zero to assign irqs on-the-fly. This will result in a
- * linear IRQ domain so it is important to use irq_create_mapping()
- * for each used IRQ, especially when SPARSE_IRQ is enabled.
+ * pass zero to assign irqs on-the-fly. If first_irq is non-zero, then
+ * pre-map all of the irqs in the domain to virqs starting at first_irq.
* @ops: map/unmap domain callbacks
* @host_data: Controller private data pointer
*
- * Allocates a legacy irq_domain if irq_base is positive or a linear
- * domain otherwise. For the legacy domain, IRQ descriptors will also
- * be allocated.
+ * Allocates an irq_domain, and optionally if first_irq is positive then also
+ * allocate irq_descs and map all of the hwirqs to virqs starting at first_irq.
*
* This is intended to implement the expected behaviour for most
- * interrupt controllers which is that a linear mapping should
- * normally be used unless the system requires a legacy mapping in
- * order to support supplying interrupt numbers during non-DT
- * registration of devices.
+ * interrupt controllers. If device tree is used, then first_irq will be 0 and
+ * irqs get mapped dynamically on the fly. However, if the controller requires
+ * static virq assignments (non-DT boot) then it will set that up correctly.
*/
struct irq_domain *irq_domain_add_simple(struct device_node *of_node,
unsigned int size,
const struct irq_domain_ops *ops,
void *host_data)
{
- if (first_irq > 0) {
- int irq_base;
+ struct irq_domain *domain;
+ domain = __irq_domain_add(of_node, size, size, 0, ops, host_data);
+ if (!domain)
+ return NULL;
+
+ if (first_irq > 0) {
if (IS_ENABLED(CONFIG_SPARSE_IRQ)) {
- /*
- * Set the descriptor allocator to search for a
- * 1-to-1 mapping, such as irq_alloc_desc_at().
- * Use of_node_to_nid() which is defined to
- * numa_node_id() on platforms that have no custom
- * implementation.
- */
- irq_base = irq_alloc_descs(first_irq, first_irq, size,
- of_node_to_nid(of_node));
- if (irq_base < 0) {
+ /* attempt to allocated irq_descs */
+ int rc = irq_alloc_descs(first_irq, first_irq, size,
+ of_node_to_nid(of_node));
+ if (rc < 0)
pr_info("Cannot allocate irq_descs @ IRQ%d, assuming pre-allocated\n",
first_irq);
- irq_base = first_irq;
- }
- } else
- irq_base = first_irq;
-
- return irq_domain_add_legacy(of_node, size, irq_base, 0,
- ops, host_data);
+ }
+ irq_domain_associate_many(domain, first_irq, 0, size);
}
- /* A linear domain is the default */
- return irq_domain_add_linear(of_node, size, ops, host_data);
+ return domain;
}
EXPORT_SYMBOL_GPL(irq_domain_add_simple);
void *host_data)
{
struct irq_domain *domain;
- unsigned int i;
- domain = irq_domain_alloc(of_node, IRQ_DOMAIN_MAP_LEGACY, ops, host_data);
+ domain = __irq_domain_add(of_node, first_hwirq + size,
+ first_hwirq + size, 0, ops, host_data);
if (!domain)
return NULL;
- domain->revmap_data.legacy.first_irq = first_irq;
- domain->revmap_data.legacy.first_hwirq = first_hwirq;
- domain->revmap_data.legacy.size = size;
-
- mutex_lock(&irq_domain_mutex);
- /* Verify that all the irqs are available */
- for (i = 0; i < size; i++) {
- int irq = first_irq + i;
- struct irq_data *irq_data = irq_get_irq_data(irq);
-
- if (WARN_ON(!irq_data || irq_data->domain)) {
- mutex_unlock(&irq_domain_mutex);
- irq_domain_free(domain);
- return NULL;
- }
- }
-
- /* Claim all of the irqs before registering a legacy domain */
- for (i = 0; i < size; i++) {
- struct irq_data *irq_data = irq_get_irq_data(first_irq + i);
- irq_data->hwirq = first_hwirq + i;
- irq_data->domain = domain;
- }
- mutex_unlock(&irq_domain_mutex);
-
- for (i = 0; i < size; i++) {
- int irq = first_irq + i;
- int hwirq = first_hwirq + i;
-
- /* IRQ0 gets ignored */
- if (!irq)
- continue;
+ irq_domain_associate_many(domain, first_irq, first_hwirq, size);
- /* Legacy flags are left to default at this point,
- * one can then use irq_create_mapping() to
- * explicitly change them
- */
- if (ops->map)
- ops->map(domain, irq, hwirq);
-
- /* Clear norequest flags */
- irq_clear_status_flags(irq, IRQ_NOREQUEST);
- }
-
- irq_domain_add(domain);
return domain;
}
EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
-/**
- * irq_domain_add_linear() - Allocate and register a linear revmap irq_domain.
- * @of_node: pointer to interrupt controller's device tree node.
- * @size: Number of interrupts in the domain.
- * @ops: map/unmap domain callbacks
- * @host_data: Controller private data pointer
- */
-struct irq_domain *irq_domain_add_linear(struct device_node *of_node,
- unsigned int size,
- const struct irq_domain_ops *ops,
- void *host_data)
-{
- struct irq_domain *domain;
- unsigned int *revmap;
-
- revmap = kzalloc_node(sizeof(*revmap) * size, GFP_KERNEL,
- of_node_to_nid(of_node));
- if (WARN_ON(!revmap))
- return NULL;
-
- domain = irq_domain_alloc(of_node, IRQ_DOMAIN_MAP_LINEAR, ops, host_data);
- if (!domain) {
- kfree(revmap);
- return NULL;
- }
- domain->revmap_data.linear.size = size;
- domain->revmap_data.linear.revmap = revmap;
- irq_domain_add(domain);
- return domain;
-}
-EXPORT_SYMBOL_GPL(irq_domain_add_linear);
-
-struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
- unsigned int max_irq,
- const struct irq_domain_ops *ops,
- void *host_data)
-{
- struct irq_domain *domain = irq_domain_alloc(of_node,
- IRQ_DOMAIN_MAP_NOMAP, ops, host_data);
- if (domain) {
- domain->revmap_data.nomap.max_irq = max_irq ? max_irq : ~0;
- irq_domain_add(domain);
- }
- return domain;
-}
-EXPORT_SYMBOL_GPL(irq_domain_add_nomap);
-
-/**
- * irq_domain_add_tree()
- * @of_node: pointer to interrupt controller's device tree node.
- * @ops: map/unmap domain callbacks
- *
- * Note: The radix tree will be allocated later during boot automatically
- * (the reverse mapping will use the slow path until that happens).
- */
-struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
- const struct irq_domain_ops *ops,
- void *host_data)
-{
- struct irq_domain *domain = irq_domain_alloc(of_node,
- IRQ_DOMAIN_MAP_TREE, ops, host_data);
- if (domain) {
- INIT_RADIX_TREE(&domain->revmap_data.tree, GFP_KERNEL);
- irq_domain_add(domain);
- }
- return domain;
-}
-EXPORT_SYMBOL_GPL(irq_domain_add_tree);
-
/**
* irq_find_host() - Locates a domain for a given device node
* @node: device-tree node of the interrupt controller
}
EXPORT_SYMBOL_GPL(irq_set_default_host);
-static void irq_domain_disassociate_many(struct irq_domain *domain,
- unsigned int irq_base, int count)
+static void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq)
{
- /*
- * disassociate in reverse order;
- * not strictly necessary, but nice for unwinding
- */
- while (count--) {
- int irq = irq_base + count;
- struct irq_data *irq_data = irq_get_irq_data(irq);
- irq_hw_number_t hwirq;
+ struct irq_data *irq_data = irq_get_irq_data(irq);
+ irq_hw_number_t hwirq;
- if (WARN_ON(!irq_data || irq_data->domain != domain))
- continue;
+ if (WARN(!irq_data || irq_data->domain != domain,
+ "virq%i doesn't exist; cannot disassociate\n", irq))
+ return;
- hwirq = irq_data->hwirq;
- irq_set_status_flags(irq, IRQ_NOREQUEST);
+ hwirq = irq_data->hwirq;
+ irq_set_status_flags(irq, IRQ_NOREQUEST);
- /* remove chip and handler */
- irq_set_chip_and_handler(irq, NULL, NULL);
+ /* remove chip and handler */
+ irq_set_chip_and_handler(irq, NULL, NULL);
- /* Make sure it's completed */
- synchronize_irq(irq);
+ /* Make sure it's completed */
+ synchronize_irq(irq);
- /* Tell the PIC about it */
- if (domain->ops->unmap)
- domain->ops->unmap(domain, irq);
- smp_mb();
+ /* Tell the PIC about it */
+ if (domain->ops->unmap)
+ domain->ops->unmap(domain, irq);
+ smp_mb();
- irq_data->domain = NULL;
- irq_data->hwirq = 0;
+ irq_data->domain = NULL;
+ irq_data->hwirq = 0;
- /* Clear reverse map */
- switch(domain->revmap_type) {
- case IRQ_DOMAIN_MAP_LINEAR:
- if (hwirq < domain->revmap_data.linear.size)
- domain->revmap_data.linear.revmap[hwirq] = 0;
- break;
- case IRQ_DOMAIN_MAP_TREE:
- mutex_lock(&revmap_trees_mutex);
- radix_tree_delete(&domain->revmap_data.tree, hwirq);
- mutex_unlock(&revmap_trees_mutex);
- break;
- }
+ /* Clear reverse map for this hwirq */
+ if (hwirq < domain->revmap_size) {
+ domain->linear_revmap[hwirq] = 0;
+ } else {
+ mutex_lock(&revmap_trees_mutex);
+ radix_tree_delete(&domain->revmap_tree, hwirq);
+ mutex_unlock(&revmap_trees_mutex);
}
}
-int irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base,
- irq_hw_number_t hwirq_base, int count)
+int irq_domain_associate(struct irq_domain *domain, unsigned int virq,
+ irq_hw_number_t hwirq)
{
- unsigned int virq = irq_base;
- irq_hw_number_t hwirq = hwirq_base;
- int i, ret;
+ struct irq_data *irq_data = irq_get_irq_data(virq);
+ int ret;
- pr_debug("%s(%s, irqbase=%i, hwbase=%i, count=%i)\n", __func__,
- of_node_full_name(domain->of_node), irq_base, (int)hwirq_base, count);
+ if (WARN(hwirq >= domain->hwirq_max,
+ "error: hwirq 0x%x is too large for %s\n", (int)hwirq, domain->name))
+ return -EINVAL;
+ if (WARN(!irq_data, "error: virq%i is not allocated", virq))
+ return -EINVAL;
+ if (WARN(irq_data->domain, "error: virq%i is already associated", virq))
+ return -EINVAL;
- for (i = 0; i < count; i++) {
- struct irq_data *irq_data = irq_get_irq_data(virq + i);
-
- if (WARN(!irq_data, "error: irq_desc not allocated; "
- "irq=%i hwirq=0x%x\n", virq + i, (int)hwirq + i))
- return -EINVAL;
- if (WARN(irq_data->domain, "error: irq_desc already associated; "
- "irq=%i hwirq=0x%x\n", virq + i, (int)hwirq + i))
- return -EINVAL;
- };
-
- for (i = 0; i < count; i++, virq++, hwirq++) {
- struct irq_data *irq_data = irq_get_irq_data(virq);
-
- irq_data->hwirq = hwirq;
- irq_data->domain = domain;
- if (domain->ops->map) {
- ret = domain->ops->map(domain, virq, hwirq);
- if (ret != 0) {
- /*
- * If map() returns -EPERM, this interrupt is protected
- * by the firmware or some other service and shall not
- * be mapped.
- *
- * Since on some platforms we blindly try to map everything
- * we end up with a log full of backtraces.
- *
- * So instead, we silently fail on -EPERM, it is the
- * responsibility of the PIC driver to display a relevant
- * message if needed.
- */
- if (ret != -EPERM) {
- pr_err("irq-%i==>hwirq-0x%lx mapping failed: %d\n",
- virq, hwirq, ret);
- WARN_ON(1);
- }
- irq_data->domain = NULL;
- irq_data->hwirq = 0;
- goto err_unmap;
+ mutex_lock(&irq_domain_mutex);
+ irq_data->hwirq = hwirq;
+ irq_data->domain = domain;
+ if (domain->ops->map) {
+ ret = domain->ops->map(domain, virq, hwirq);
+ if (ret != 0) {
+ /*
+ * If map() returns -EPERM, this interrupt is protected
+ * by the firmware or some other service and shall not
+ * be mapped. Don't bother telling the user about it.
+ */
+ if (ret != -EPERM) {
+ pr_info("%s didn't like hwirq-0x%lx to VIRQ%i mapping (rc=%d)\n",
+ domain->name, hwirq, virq, ret);
}
+ irq_data->domain = NULL;
+ irq_data->hwirq = 0;
+ mutex_unlock(&irq_domain_mutex);
+ return ret;
}
- switch (domain->revmap_type) {
- case IRQ_DOMAIN_MAP_LINEAR:
- if (hwirq < domain->revmap_data.linear.size)
- domain->revmap_data.linear.revmap[hwirq] = virq;
- break;
- case IRQ_DOMAIN_MAP_TREE:
- mutex_lock(&revmap_trees_mutex);
- radix_tree_insert(&domain->revmap_data.tree, hwirq, irq_data);
- mutex_unlock(&revmap_trees_mutex);
- break;
- }
+ /* If not already assigned, give the domain the chip's name */
+ if (!domain->name && irq_data->chip)
+ domain->name = irq_data->chip->name;
+ }
- irq_clear_status_flags(virq, IRQ_NOREQUEST);
+ if (hwirq < domain->revmap_size) {
+ domain->linear_revmap[hwirq] = virq;
+ } else {
+ mutex_lock(&revmap_trees_mutex);
+ radix_tree_insert(&domain->revmap_tree, hwirq, irq_data);
+ mutex_unlock(&revmap_trees_mutex);
}
+ mutex_unlock(&irq_domain_mutex);
+
+ irq_clear_status_flags(virq, IRQ_NOREQUEST);
return 0;
+}
+EXPORT_SYMBOL_GPL(irq_domain_associate);
- err_unmap:
- irq_domain_disassociate_many(domain, irq_base, i);
- return -EINVAL;
+void irq_domain_associate_many(struct irq_domain *domain, unsigned int irq_base,
+ irq_hw_number_t hwirq_base, int count)
+{
+ int i;
+
+ pr_debug("%s(%s, irqbase=%i, hwbase=%i, count=%i)\n", __func__,
+ of_node_full_name(domain->of_node), irq_base, (int)hwirq_base, count);
+
+ for (i = 0; i < count; i++) {
+ irq_domain_associate(domain, irq_base + i, hwirq_base + i);
+ }
}
EXPORT_SYMBOL_GPL(irq_domain_associate_many);
*
* This routine is used for irq controllers which can choose the hardware
* interrupt numbers they generate. In such a case it's simplest to use
- * the linux irq as the hardware interrupt number.
+ * the linux irq as the hardware interrupt number. It still uses the linear
+ * or radix tree to store the mapping, but the irq controller can optimize
+ * the revmap path by using the hwirq directly.
*/
unsigned int irq_create_direct_mapping(struct irq_domain *domain)
{
if (domain == NULL)
domain = irq_default_domain;
- if (WARN_ON(!domain || domain->revmap_type != IRQ_DOMAIN_MAP_NOMAP))
- return 0;
-
virq = irq_alloc_desc_from(1, of_node_to_nid(domain->of_node));
if (!virq) {
pr_debug("create_direct virq allocation failed\n");
return 0;
}
- if (virq >= domain->revmap_data.nomap.max_irq) {
+ if (virq >= domain->revmap_direct_max_irq) {
pr_err("ERROR: no free irqs available below %i maximum\n",
- domain->revmap_data.nomap.max_irq);
+ domain->revmap_direct_max_irq);
irq_free_desc(virq);
return 0;
}
if (domain == NULL)
domain = irq_default_domain;
if (domain == NULL) {
- pr_warning("irq_create_mapping called for"
- " NULL domain, hwirq=%lx\n", hwirq);
- WARN_ON(1);
+ WARN(1, "%s(, %lx) called with NULL domain\n", __func__, hwirq);
return 0;
}
pr_debug("-> using domain @%p\n", domain);
return virq;
}
- /* Get a virtual interrupt number */
- if (domain->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
- return irq_domain_legacy_revmap(domain, hwirq);
-
/* Allocate a virtual interrupt number */
hint = hwirq % nr_irqs;
if (hint == 0)
if (unlikely(ret < 0))
return ret;
- ret = irq_domain_associate_many(domain, irq_base, hwirq_base, count);
- if (unlikely(ret < 0)) {
- irq_free_descs(irq_base, count);
- return ret;
- }
-
+ irq_domain_associate_many(domain, irq_base, hwirq_base, count);
return 0;
}
EXPORT_SYMBOL_GPL(irq_create_strict_mappings);
domain = controller ? irq_find_host(controller) : irq_default_domain;
if (!domain) {
- #ifdef CONFIG_MIPS
- /*
- * Workaround to avoid breaking interrupt controller drivers
- * that don't yet register an irq_domain. This is temporary
- * code. ~~~gcl, Feb 24, 2012
- *
- * Scheduled for removal in Linux v3.6. That should be enough
- * time.
- */
- if (intsize > 0)
- return intspec[0];
- #endif
- pr_warning("no irq domain found for %s !\n",
- of_node_full_name(controller));
+ pr_warn("no irq domain found for %s !\n",
+ of_node_full_name(controller));
return 0;
}
/* Set type if specified and different than the current one */
if (type != IRQ_TYPE_NONE &&
- type != (irqd_get_trigger_type(irq_get_irq_data(virq))))
+ type != irq_get_trigger_type(virq))
irq_set_irq_type(virq, type);
return virq;
}
if (WARN_ON(domain == NULL))
return;
- /* Never unmap legacy interrupts */
- if (domain->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
- return;
-
- irq_domain_disassociate_many(domain, virq, 1);
+ irq_domain_disassociate(domain, virq);
irq_free_desc(virq);
}
EXPORT_SYMBOL_GPL(irq_dispose_mapping);
if (domain == NULL)
return 0;
- switch (domain->revmap_type) {
- case IRQ_DOMAIN_MAP_LEGACY:
- return irq_domain_legacy_revmap(domain, hwirq);
- case IRQ_DOMAIN_MAP_LINEAR:
- return irq_linear_revmap(domain, hwirq);
- case IRQ_DOMAIN_MAP_TREE:
- rcu_read_lock();
- data = radix_tree_lookup(&domain->revmap_data.tree, hwirq);
- rcu_read_unlock();
- if (data)
- return data->irq;
- break;
- case IRQ_DOMAIN_MAP_NOMAP:
+ if (hwirq < domain->revmap_direct_max_irq) {
data = irq_get_irq_data(hwirq);
if (data && (data->domain == domain) && (data->hwirq == hwirq))
return hwirq;
- break;
}
- return 0;
-}
-EXPORT_SYMBOL_GPL(irq_find_mapping);
-
-/**
- * irq_linear_revmap() - Find a linux irq from a hw irq number.
- * @domain: domain owning this hardware interrupt
- * @hwirq: hardware irq number in that domain space
- *
- * This is a fast path that can be called directly by irq controller code to
- * save a handful of instructions.
- */
-unsigned int irq_linear_revmap(struct irq_domain *domain,
- irq_hw_number_t hwirq)
-{
- BUG_ON(domain->revmap_type != IRQ_DOMAIN_MAP_LINEAR);
-
- /* Check revmap bounds; complain if exceeded */
- if (WARN_ON(hwirq >= domain->revmap_data.linear.size))
- return 0;
+ /* Check if the hwirq is in the linear revmap. */
+ if (hwirq < domain->revmap_size)
+ return domain->linear_revmap[hwirq];
- return domain->revmap_data.linear.revmap[hwirq];
+ rcu_read_lock();
+ data = radix_tree_lookup(&domain->revmap_tree, hwirq);
+ rcu_read_unlock();
+ return data ? data->irq : 0;
}
-EXPORT_SYMBOL_GPL(irq_linear_revmap);
+EXPORT_SYMBOL_GPL(irq_find_mapping);
#ifdef CONFIG_IRQ_DOMAIN_DEBUG
static int virq_debug_show(struct seq_file *m, void *private)
{
unsigned long flags;
struct irq_desc *desc;
- const char *p;
- static const char none[] = "none";
- void *data;
+ struct irq_domain *domain;
+ struct radix_tree_iter iter;
+ void *data, **slot;
int i;
- seq_printf(m, "%-5s %-7s %-15s %-*s %s\n", "irq", "hwirq",
+ seq_printf(m, " %-16s %-6s %-10s %-10s %s\n",
+ "name", "mapped", "linear-max", "direct-max", "devtree-node");
+ mutex_lock(&irq_domain_mutex);
+ list_for_each_entry(domain, &irq_domain_list, link) {
+ int count = 0;
+ radix_tree_for_each_slot(slot, &domain->revmap_tree, &iter, 0)
+ count++;
+ seq_printf(m, "%c%-16s %6u %10u %10u %s\n",
+ domain == irq_default_domain ? '*' : ' ', domain->name,
+ domain->revmap_size + count, domain->revmap_size,
+ domain->revmap_direct_max_irq,
+ domain->of_node ? of_node_full_name(domain->of_node) : "");
+ }
+ mutex_unlock(&irq_domain_mutex);
+
+ seq_printf(m, "%-5s %-7s %-15s %-*s %6s %-14s %s\n", "irq", "hwirq",
"chip name", (int)(2 * sizeof(void *) + 2), "chip data",
- "domain name");
+ "active", "type", "domain");
for (i = 1; i < nr_irqs; i++) {
desc = irq_to_desc(i);
continue;
raw_spin_lock_irqsave(&desc->lock, flags);
+ domain = desc->irq_data.domain;
- if (desc->action && desc->action->handler) {
+ if (domain) {
struct irq_chip *chip;
+ int hwirq = desc->irq_data.hwirq;
+ bool direct;
seq_printf(m, "%5d ", i);
- seq_printf(m, "0x%05lx ", desc->irq_data.hwirq);
+ seq_printf(m, "0x%05x ", hwirq);
chip = irq_desc_get_chip(desc);
- if (chip && chip->name)
- p = chip->name;
- else
- p = none;
- seq_printf(m, "%-15s ", p);
+ seq_printf(m, "%-15s ", (chip && chip->name) ? chip->name : "none");
data = irq_desc_get_chip_data(desc);
seq_printf(m, data ? "0x%p " : " %p ", data);
- if (desc->irq_data.domain)
- p = of_node_full_name(desc->irq_data.domain->of_node);
- else
- p = none;
- seq_printf(m, "%s\n", p);
+ seq_printf(m, " %c ", (desc->action && desc->action->handler) ? '*' : ' ');
+ direct = (i == hwirq) && (i < domain->revmap_direct_max_irq);
+ seq_printf(m, "%6s%-8s ",
+ (hwirq < domain->revmap_size) ? "LINEAR" : "RADIX",
+ direct ? "(DIRECT)" : "");
+ seq_printf(m, "%s\n", desc->irq_data.domain->name);
}
raw_spin_unlock_irqrestore(&desc->lock, flags);
.xlate = irq_domain_xlate_onetwocell,
};
EXPORT_SYMBOL_GPL(irq_domain_simple_ops);
-
-#ifdef CONFIG_OF_IRQ
-void irq_domain_generate_simple(const struct of_device_id *match,
- u64 phys_base, unsigned int irq_start)
-{
- struct device_node *node;
- pr_debug("looking for phys_base=%llx, irq_start=%i\n",
- (unsigned long long) phys_base, (int) irq_start);
- node = of_find_matching_node_by_address(NULL, match, phys_base);
- if (node)
- irq_domain_add_legacy(node, 32, irq_start, 0,
- &irq_domain_simple_ops, NULL);
-}
-EXPORT_SYMBOL_GPL(irq_domain_generate_simple);
-#endif
+menu "printk and dmesg options"
config PRINTK_TIME
bool "Show timing information on printks"
that are auditing their logs closely may want to set it to a lower
priority.
+config BOOT_PRINTK_DELAY
+ bool "Delay each boot printk message by N milliseconds"
+ depends on DEBUG_KERNEL && PRINTK && GENERIC_CALIBRATE_DELAY
+ help
+ This build option allows you to read kernel boot messages
+ by inserting a short delay after each one. The delay is
+ specified in milliseconds on the kernel command line,
+ using "boot_delay=N".
+
+ It is likely that you would also need to use "lpj=M" to preset
+ the "loops per jiffie" value.
+ See a previous boot log for the "lpj" value to use for your
+ system, and then set "lpj=M" before setting "boot_delay=N".
+ NOTE: Using this option may adversely affect SMP systems.
+ I.e., processors other than the first one may not boot up.
+ BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
+ what it believes to be lockup conditions.
+
+config DYNAMIC_DEBUG
+ bool "Enable dynamic printk() support"
+ default n
+ depends on PRINTK
+ depends on DEBUG_FS
+ help
+
+ Compiles debug level messages into the kernel, which would not
+ otherwise be available at runtime. These messages can then be
+ enabled/disabled based on various levels of scope - per source file,
+ function, module, format string, and line number. This mechanism
+ implicitly compiles in all pr_debug() and dev_dbg() calls, which
+ enlarges the kernel text size by about 2%.
+
+ If a source file is compiled with DEBUG flag set, any
+ pr_debug() calls in it are enabled by default, but can be
+ disabled at runtime as below. Note that DEBUG flag is
+ turned on by many CONFIG_*DEBUG* options.
+
+ Usage:
+
+ Dynamic debugging is controlled via the 'dynamic_debug/control' file,
+ which is contained in the 'debugfs' filesystem. Thus, the debugfs
+ filesystem must first be mounted before making use of this feature.
+ We refer the control file as: <debugfs>/dynamic_debug/control. This
+ file contains a list of the debug statements that can be enabled. The
+ format for each line of the file is:
+
+ filename:lineno [module]function flags format
+
+ filename : source file of the debug statement
+ lineno : line number of the debug statement
+ module : module that contains the debug statement
+ function : function that contains the debug statement
+ flags : '=p' means the line is turned 'on' for printing
+ format : the format used for the debug statement
+
+ From a live system:
+
+ nullarbor:~ # cat <debugfs>/dynamic_debug/control
+ # filename:lineno [module]function flags format
+ fs/aio.c:222 [aio]__put_ioctx =_ "__put_ioctx:\040freeing\040%p\012"
+ fs/aio.c:248 [aio]ioctx_alloc =_ "ENOMEM:\040nr_events\040too\040high\012"
+ fs/aio.c:1770 [aio]sys_io_cancel =_ "calling\040cancel\012"
+
+ Example usage:
+
+ // enable the message at line 1603 of file svcsock.c
+ nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
+ <debugfs>/dynamic_debug/control
+
+ // enable all the messages in file svcsock.c
+ nullarbor:~ # echo -n 'file svcsock.c +p' >
+ <debugfs>/dynamic_debug/control
+
+ // enable all the messages in the NFS server module
+ nullarbor:~ # echo -n 'module nfsd +p' >
+ <debugfs>/dynamic_debug/control
+
+ // enable all 12 messages in the function svc_process()
+ nullarbor:~ # echo -n 'func svc_process +p' >
+ <debugfs>/dynamic_debug/control
+
+ // disable all 12 messages in the function svc_process()
+ nullarbor:~ # echo -n 'func svc_process -p' >
+ <debugfs>/dynamic_debug/control
+
+ See Documentation/dynamic-debug-howto.txt for additional information.
+
+endmenu # "printk and dmesg options"
+
+menu "Compile-time checks and compiler options"
+
+config DEBUG_INFO
+ bool "Compile the kernel with debug info"
+ depends on DEBUG_KERNEL
+ help
+ If you say Y here the resulting kernel image will include
+ debugging info resulting in a larger kernel image.
+ This adds debug symbols to the kernel and modules (gcc -g), and
+ is needed if you intend to use kernel crashdump or binary object
+ tools like crash, kgdb, LKCD, gdb, etc on the kernel.
+ Say Y here only if you plan to debug the kernel.
+
+ If unsure, say N.
+
+config DEBUG_INFO_REDUCED
+ bool "Reduce debugging information"
+ depends on DEBUG_INFO
+ help
+ If you say Y here gcc is instructed to generate less debugging
+ information for structure types. This means that tools that
+ need full debugging information (like kgdb or systemtap) won't
+ be happy. But if you merely need debugging information to
+ resolve line numbers there is no loss. Advantage is that
+ build directory object sizes shrink dramatically over a full
+ DEBUG_INFO build and compile times are reduced too.
+ Only works with newer gcc versions.
+
config ENABLE_WARN_DEPRECATED
bool "Enable __deprecated logic"
default y
Setting it to 0 disables the warning.
Requires gcc 4.4
-config MAGIC_SYSRQ
- bool "Magic SysRq key"
- depends on !UML
- help
- If you say Y here, you will have some control over the system even
- if the system crashes for example during kernel debugging (e.g., you
- will be able to flush the buffer cache to disk, reboot the system
- immediately or dump some status information). This is accomplished
- by pressing various keys while holding SysRq (Alt+PrintScreen). It
- also works on a serial console (on PC hardware at least), if you
- send a BREAK and then within 5 seconds a command keypress. The
- keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
- unless you really know what this hack does.
-
config STRIP_ASM_SYMS
bool "Strip assembler-generated symbols during link"
default n
debugging files into. Enable this option to be able to read and
write to these files.
- For detailed documentation on the debugfs API, see
- Documentation/DocBook/filesystems.
+ For detailed documentation on the debugfs API, see
+ Documentation/DocBook/filesystems.
+
+ If unsure, say N.
+
+config HEADERS_CHECK
+ bool "Run 'make headers_check' when building vmlinux"
+ depends on !UML
+ help
+ This option will extract the user-visible kernel headers whenever
+ building the kernel, and will run basic sanity checks on them to
+ ensure that exported files do not attempt to include files which
+ were not exported, etc.
+
+ If you're making modifications to header files which are
+ relevant for userspace, say 'Y', and check the headers
+ exported to $(INSTALL_HDR_PATH) (usually 'usr/include' in
+ your build tree), to make sure they're suitable.
+
+config DEBUG_SECTION_MISMATCH
+ bool "Enable full Section mismatch analysis"
+ help
+ The section mismatch analysis checks if there are illegal
+ references from one section to another section.
+ During linktime or runtime, some sections are dropped;
+ any use of code/data previously in these sections would
+ most likely result in an oops.
+ In the code, functions and variables are annotated with
+ __init, __cpuinit, etc. (see the full list in include/linux/init.h),
+ which results in the code/data being placed in specific sections.
+ The section mismatch analysis is always performed after a full
+ kernel build, and enabling this option causes the following
+ additional steps to occur:
+ - Add the option -fno-inline-functions-called-once to gcc commands.
+ When inlining a function annotated with __init in a non-init
+ function, we would lose the section information and thus
+ the analysis would not catch the illegal reference.
+ This option tells gcc to inline less (but it does result in
+ a larger kernel).
+ - Run the section mismatch analysis for each module/built-in.o file.
+ When we run the section mismatch analysis on vmlinux.o, we
+ lose valueble information about where the mismatch was
+ introduced.
+ Running the analysis for each module/built-in.o file
+ tells where the mismatch happens much closer to the
+ source. The drawback is that the same mismatch is
+ reported at least twice.
+ - Enable verbose reporting from modpost in order to help resolve
+ the section mismatches that are reported.
+
+#
+# Select this config option from the architecture Kconfig, if it
+# is preferred to always offer frame pointers as a config
+# option on the architecture (regardless of KERNEL_DEBUG):
+#
+config ARCH_WANT_FRAME_POINTERS
+ bool
+ help
+
+config FRAME_POINTER
+ bool "Compile the kernel with frame pointers"
+ depends on DEBUG_KERNEL && \
+ (CRIS || M68K || FRV || UML || \
+ AVR32 || SUPERH || BLACKFIN || MN10300 || METAG) || \
+ ARCH_WANT_FRAME_POINTERS
+ default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
+ help
+ If you say Y here the resulting kernel image will be slightly
+ larger and slower, but it gives very useful debugging information
+ in case of kernel bugs. (precise oopses/stacktraces/warnings)
+
+config DEBUG_FORCE_WEAK_PER_CPU
+ bool "Force weak per-cpu definitions"
+ depends on DEBUG_KERNEL
+ help
+ s390 and alpha require percpu variables in modules to be
+ defined weak to work around addressing range issue which
+ puts the following two restrictions on percpu variable
+ definitions.
+
+ 1. percpu symbols must be unique whether static or not
+ 2. percpu variables can't be defined inside a function
+
+ To ensure that generic code follows the above rules, this
+ option forces all percpu variables to be defined as weak.
+
+endmenu # "Compiler options"
+
+config MAGIC_SYSRQ
+ bool "Magic SysRq key"
+ depends on !UML
+ help
+ If you say Y here, you will have some control over the system even
+ if the system crashes for example during kernel debugging (e.g., you
+ will be able to flush the buffer cache to disk, reboot the system
+ immediately or dump some status information). This is accomplished
+ by pressing various keys while holding SysRq (Alt+PrintScreen). It
+ also works on a serial console (on PC hardware at least), if you
+ send a BREAK and then within 5 seconds a command keypress. The
+ keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
+ unless you really know what this hack does.
+
+config DEBUG_KERNEL
+ bool "Kernel debugging"
+ help
+ Say Y here if you are developing drivers or trying to debug and
+ identify kernel problems.
+
+menu "Memory Debugging"
+
+source mm/Kconfig.debug
+
+config DEBUG_OBJECTS
+ bool "Debug object operations"
+ depends on DEBUG_KERNEL
+ help
+ If you say Y here, additional code will be inserted into the
+ kernel to track the life time of various objects and validate
+ the operations on those objects.
+
+config DEBUG_OBJECTS_SELFTEST
+ bool "Debug objects selftest"
+ depends on DEBUG_OBJECTS
+ help
+ This enables the selftest of the object debug code.
+
+config DEBUG_OBJECTS_FREE
+ bool "Debug objects in freed memory"
+ depends on DEBUG_OBJECTS
+ help
+ This enables checks whether a k/v free operation frees an area
+ which contains an object which has not been deactivated
+ properly. This can make kmalloc/kfree-intensive workloads
+ much slower.
+
+config DEBUG_OBJECTS_TIMERS
+ bool "Debug timer objects"
+ depends on DEBUG_OBJECTS
+ help
+ If you say Y here, additional code will be inserted into the
+ timer routines to track the life time of timer objects and
+ validate the timer operations.
+
+config DEBUG_OBJECTS_WORK
+ bool "Debug work objects"
+ depends on DEBUG_OBJECTS
+ help
+ If you say Y here, additional code will be inserted into the
+ work queue routines to track the life time of work objects and
+ validate the work operations.
+
+config DEBUG_OBJECTS_RCU_HEAD
+ bool "Debug RCU callbacks objects"
+ depends on DEBUG_OBJECTS
+ help
+ Enable this to turn on debugging of RCU list heads (call_rcu() usage).
+
+config DEBUG_OBJECTS_PERCPU_COUNTER
+ bool "Debug percpu counter objects"
+ depends on DEBUG_OBJECTS
+ help
+ If you say Y here, additional code will be inserted into the
+ percpu counter routines to track the life time of percpu counter
+ objects and validate the percpu counter operations.
+
+config DEBUG_OBJECTS_ENABLE_DEFAULT
+ int "debug_objects bootup default value (0-1)"
+ range 0 1
+ default "1"
+ depends on DEBUG_OBJECTS
+ help
+ Debug objects boot parameter default value
+
+config DEBUG_SLAB
+ bool "Debug slab memory allocations"
+ depends on DEBUG_KERNEL && SLAB && !KMEMCHECK
+ help
+ Say Y here to have the kernel do limited verification on memory
+ allocation as well as poisoning memory on free to catch use of freed
+ memory. This can make kmalloc/kfree-intensive workloads much slower.
+
+config DEBUG_SLAB_LEAK
+ bool "Memory leak debugging"
+ depends on DEBUG_SLAB
+
+config SLUB_DEBUG_ON
+ bool "SLUB debugging on by default"
+ depends on SLUB && SLUB_DEBUG && !KMEMCHECK
+ default n
+ help
+ Boot with debugging on by default. SLUB boots by default with
+ the runtime debug capabilities switched off. Enabling this is
+ equivalent to specifying the "slub_debug" parameter on boot.
+ There is no support for more fine grained debug control like
+ possible with slub_debug=xxx. SLUB debugging may be switched
+ off in a kernel built with CONFIG_SLUB_DEBUG_ON by specifying
+ "slub_debug=-".
+
+config SLUB_STATS
+ default n
+ bool "Enable SLUB performance statistics"
+ depends on SLUB && SYSFS
+ help
+ SLUB statistics are useful to debug SLUBs allocation behavior in
+ order find ways to optimize the allocator. This should never be
+ enabled for production use since keeping statistics slows down
+ the allocator by a few percentage points. The slabinfo command
+ supports the determination of the most active slabs to figure
+ out which slabs are relevant to a particular load.
+ Try running: slabinfo -DA
+
+config HAVE_DEBUG_KMEMLEAK
+ bool
+
+config DEBUG_KMEMLEAK
+ bool "Kernel memory leak detector"
+ depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK
+ select DEBUG_FS
+ select STACKTRACE if STACKTRACE_SUPPORT
+ select KALLSYMS
+ select CRC32
+ help
+ Say Y here if you want to enable the memory leak
+ detector. The memory allocation/freeing is traced in a way
+ similar to the Boehm's conservative garbage collector, the
+ difference being that the orphan objects are not freed but
+ only shown in /sys/kernel/debug/kmemleak. Enabling this
+ feature will introduce an overhead to memory
+ allocations. See Documentation/kmemleak.txt for more
+ details.
+
+ Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances
+ of finding leaks due to the slab objects poisoning.
+
+ In order to access the kmemleak file, debugfs needs to be
+ mounted (usually at /sys/kernel/debug).
+
+config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
+ int "Maximum kmemleak early log entries"
+ depends on DEBUG_KMEMLEAK
+ range 200 40000
+ default 400
+ help
+ Kmemleak must track all the memory allocations to avoid
+ reporting false positives. Since memory may be allocated or
+ freed before kmemleak is initialised, an early log buffer is
+ used to store these actions. If kmemleak reports "early log
+ buffer exceeded", please increase this value.
+
+config DEBUG_KMEMLEAK_TEST
+ tristate "Simple test for the kernel memory leak detector"
+ depends on DEBUG_KMEMLEAK && m
+ help
+ This option enables a module that explicitly leaks memory.
+
+ If unsure, say N.
+
+config DEBUG_KMEMLEAK_DEFAULT_OFF
+ bool "Default kmemleak to off"
+ depends on DEBUG_KMEMLEAK
+ help
+ Say Y here to disable kmemleak by default. It can then be enabled
+ on the command line via kmemleak=on.
+
+config DEBUG_STACK_USAGE
+ bool "Stack utilization instrumentation"
+ depends on DEBUG_KERNEL && !IA64 && !PARISC && !METAG
+ help
+ Enables the display of the minimum amount of free stack which each
+ task has ever had available in the sysrq-T and sysrq-P debug output.
+
+ This option will slow down process creation somewhat.
+
+config DEBUG_VM
+ bool "Debug VM"
+ depends on DEBUG_KERNEL
+ help
+ Enable this to turn on extended checks in the virtual-memory system
+ that may impact performance.
+
+ If unsure, say N.
+
+config DEBUG_VM_RB
+ bool "Debug VM red-black trees"
+ depends on DEBUG_VM
+ help
+ Enable this to turn on more extended checks in the virtual-memory
+ system that may impact performance.
+
+ If unsure, say N.
+
+config DEBUG_VIRTUAL
+ bool "Debug VM translations"
+ depends on DEBUG_KERNEL && X86
+ help
+ Enable some costly sanity checks in virtual to page code. This can
+ catch mistakes with virt_to_page() and friends.
+
+ If unsure, say N.
+
+config DEBUG_NOMMU_REGIONS
+ bool "Debug the global anon/private NOMMU mapping region tree"
+ depends on DEBUG_KERNEL && !MMU
+ help
+ This option causes the global tree of anonymous and private mapping
+ regions to be regularly checked for invalid topology.
+
+config DEBUG_MEMORY_INIT
+ bool "Debug memory initialisation" if EXPERT
+ default !EXPERT
+ help
+ Enable this for additional checks during memory initialisation.
+ The sanity checks verify aspects of the VM such as the memory model
+ and other information provided by the architecture. Verbose
+ information will be printed at KERN_DEBUG loglevel depending
+ on the mminit_loglevel= command-line option.
+
+ If unsure, say Y
+
+config MEMORY_NOTIFIER_ERROR_INJECT
+ tristate "Memory hotplug notifier error injection module"
+ depends on MEMORY_HOTPLUG_SPARSE && NOTIFIER_ERROR_INJECTION
+ help
+ This option provides the ability to inject artificial errors to
+ memory hotplug notifier chain callbacks. It is controlled through
+ debugfs interface under /sys/kernel/debug/notifier-error-inject/memory
+
+ If the notifier call chain should be failed with some events
+ notified, write the error code to "actions/<notifier event>/error".
+
+ Example: Inject memory hotplug offline error (-12 == -ENOMEM)
+
+ # cd /sys/kernel/debug/notifier-error-inject/memory
+ # echo -12 > actions/MEM_GOING_OFFLINE/error
+ # echo offline > /sys/devices/system/memory/memoryXXX/state
+ bash: echo: write error: Cannot allocate memory
+
+ To compile this code as a module, choose M here: the module will
+ be called memory-notifier-error-inject.
If unsure, say N.
-config HEADERS_CHECK
- bool "Run 'make headers_check' when building vmlinux"
- depends on !UML
+config DEBUG_PER_CPU_MAPS
+ bool "Debug access to per_cpu maps"
+ depends on DEBUG_KERNEL
+ depends on SMP
help
- This option will extract the user-visible kernel headers whenever
- building the kernel, and will run basic sanity checks on them to
- ensure that exported files do not attempt to include files which
- were not exported, etc.
+ Say Y to verify that the per_cpu map being accessed has
+ been set up. This adds a fair amount of code to kernel memory
+ and decreases performance.
- If you're making modifications to header files which are
- relevant for userspace, say 'Y', and check the headers
- exported to $(INSTALL_HDR_PATH) (usually 'usr/include' in
- your build tree), to make sure they're suitable.
+ Say N if unsure.
-config DEBUG_SECTION_MISMATCH
- bool "Enable full Section mismatch analysis"
+config DEBUG_HIGHMEM
+ bool "Highmem debugging"
+ depends on DEBUG_KERNEL && HIGHMEM
help
- The section mismatch analysis checks if there are illegal
- references from one section to another section.
- During linktime or runtime, some sections are dropped;
- any use of code/data previously in these sections would
- most likely result in an oops.
- In the code, functions and variables are annotated with
- __init, __cpuinit, etc. (see the full list in include/linux/init.h),
- which results in the code/data being placed in specific sections.
- The section mismatch analysis is always performed after a full
- kernel build, and enabling this option causes the following
- additional steps to occur:
- - Add the option -fno-inline-functions-called-once to gcc commands.
- When inlining a function annotated with __init in a non-init
- function, we would lose the section information and thus
- the analysis would not catch the illegal reference.
- This option tells gcc to inline less (but it does result in
- a larger kernel).
- - Run the section mismatch analysis for each module/built-in.o file.
- When we run the section mismatch analysis on vmlinux.o, we
- lose valueble information about where the mismatch was
- introduced.
- Running the analysis for each module/built-in.o file
- tells where the mismatch happens much closer to the
- source. The drawback is that the same mismatch is
- reported at least twice.
- - Enable verbose reporting from modpost in order to help resolve
- the section mismatches that are reported.
+ This options enables addition error checking for high memory systems.
+ Disable for production systems.
-config DEBUG_KERNEL
- bool "Kernel debugging"
- help
- Say Y here if you are developing drivers or trying to debug and
- identify kernel problems.
+config HAVE_DEBUG_STACKOVERFLOW
+ bool
+
+config DEBUG_STACKOVERFLOW
+ bool "Check for stack overflows"
+ depends on DEBUG_KERNEL && HAVE_DEBUG_STACKOVERFLOW
+ ---help---
+ Say Y here if you want to check for overflows of kernel, IRQ
+ and exception stacks (if your archicture uses them). This
+ option will show detailed messages if free stack space drops
+ below a certain limit.
+
+ These kinds of bugs usually occur when call-chains in the
+ kernel get too deep, especially when interrupts are
+ involved.
+
+ Use this in cases where you see apparently random memory
+ corruption, especially if it appears in 'struct thread_info'
+
+ If in doubt, say "N".
+
+source "lib/Kconfig.kmemcheck"
+
+endmenu # "Memory Debugging"
config DEBUG_SHIRQ
bool "Debug shared IRQ handlers"
Drivers ought to be able to handle interrupts coming in at those
points; some don't and need to be caught.
+menu "Debug Lockups and Hangs"
+
config LOCKUP_DETECTOR
bool "Detect Hard and Soft Lockups"
depends on DEBUG_KERNEL && !S390
default 0 if !BOOTPARAM_SOFTLOCKUP_PANIC
default 1 if BOOTPARAM_SOFTLOCKUP_PANIC
-config PANIC_ON_OOPS
- bool "Panic on Oops"
- help
- Say Y here to enable the kernel to panic when it oopses. This
- has the same effect as setting oops=panic on the kernel command
- line.
-
- This feature is useful to ensure that the kernel does not do
- anything erroneous after an oops which could result in data
- corruption or other issues.
-
- Say N if unsure.
-
-config PANIC_ON_OOPS_VALUE
- int
- range 0 1
- default 0 if !PANIC_ON_OOPS
- default 1 if PANIC_ON_OOPS
-
config DETECT_HUNG_TASK
bool "Detect Hung Tasks"
depends on DEBUG_KERNEL
config BOOTPARAM_HUNG_TASK_PANIC_VALUE
int
- depends on DETECT_HUNG_TASK
- range 0 1
- default 0 if !BOOTPARAM_HUNG_TASK_PANIC
- default 1 if BOOTPARAM_HUNG_TASK_PANIC
-
-config SCHED_DEBUG
- bool "Collect scheduler debugging info"
- depends on DEBUG_KERNEL && PROC_FS
- default y
- help
- If you say Y here, the /proc/sched_debug file will be provided
- that can help debug the scheduler. The runtime overhead of this
- option is minimal.
-
-config SCHEDSTATS
- bool "Collect scheduler statistics"
- depends on DEBUG_KERNEL && PROC_FS
- help
- If you say Y here, additional code will be inserted into the
- scheduler and related routines to collect statistics about
- scheduler behavior and provide them in /proc/schedstat. These
- stats may be useful for both tuning and debugging the scheduler
- If you aren't debugging the scheduler or trying to tune a specific
- application, you can say N to avoid the very slight overhead
- this adds.
-
-config TIMER_STATS
- bool "Collect kernel timers statistics"
- depends on DEBUG_KERNEL && PROC_FS
- help
- If you say Y here, additional code will be inserted into the
- timer routines to collect statistics about kernel timers being
- reprogrammed. The statistics can be read from /proc/timer_stats.
- The statistics collection is started by writing 1 to /proc/timer_stats,
- writing 0 stops it. This feature is useful to collect information
- about timer usage patterns in kernel and userspace. This feature
- is lightweight if enabled in the kernel config but not activated
- (it defaults to deactivated on bootup and will only be activated
- if some application like powertop activates it explicitly).
-
-config DEBUG_OBJECTS
- bool "Debug object operations"
- depends on DEBUG_KERNEL
- help
- If you say Y here, additional code will be inserted into the
- kernel to track the life time of various objects and validate
- the operations on those objects.
-
-config DEBUG_OBJECTS_SELFTEST
- bool "Debug objects selftest"
- depends on DEBUG_OBJECTS
- help
- This enables the selftest of the object debug code.
-
-config DEBUG_OBJECTS_FREE
- bool "Debug objects in freed memory"
- depends on DEBUG_OBJECTS
- help
- This enables checks whether a k/v free operation frees an area
- which contains an object which has not been deactivated
- properly. This can make kmalloc/kfree-intensive workloads
- much slower.
-
-config DEBUG_OBJECTS_TIMERS
- bool "Debug timer objects"
- depends on DEBUG_OBJECTS
- help
- If you say Y here, additional code will be inserted into the
- timer routines to track the life time of timer objects and
- validate the timer operations.
-
-config DEBUG_OBJECTS_WORK
- bool "Debug work objects"
- depends on DEBUG_OBJECTS
- help
- If you say Y here, additional code will be inserted into the
- work queue routines to track the life time of work objects and
- validate the work operations.
-
-config DEBUG_OBJECTS_RCU_HEAD
- bool "Debug RCU callbacks objects"
- depends on DEBUG_OBJECTS
- help
- Enable this to turn on debugging of RCU list heads (call_rcu() usage).
-
-config DEBUG_OBJECTS_PERCPU_COUNTER
- bool "Debug percpu counter objects"
- depends on DEBUG_OBJECTS
- help
- If you say Y here, additional code will be inserted into the
- percpu counter routines to track the life time of percpu counter
- objects and validate the percpu counter operations.
-
-config DEBUG_OBJECTS_ENABLE_DEFAULT
- int "debug_objects bootup default value (0-1)"
- range 0 1
- default "1"
- depends on DEBUG_OBJECTS
- help
- Debug objects boot parameter default value
-
-config DEBUG_SLAB
- bool "Debug slab memory allocations"
- depends on DEBUG_KERNEL && SLAB && !KMEMCHECK
- help
- Say Y here to have the kernel do limited verification on memory
- allocation as well as poisoning memory on free to catch use of freed
- memory. This can make kmalloc/kfree-intensive workloads much slower.
-
-config DEBUG_SLAB_LEAK
- bool "Memory leak debugging"
- depends on DEBUG_SLAB
-
-config SLUB_DEBUG_ON
- bool "SLUB debugging on by default"
- depends on SLUB && SLUB_DEBUG && !KMEMCHECK
- default n
- help
- Boot with debugging on by default. SLUB boots by default with
- the runtime debug capabilities switched off. Enabling this is
- equivalent to specifying the "slub_debug" parameter on boot.
- There is no support for more fine grained debug control like
- possible with slub_debug=xxx. SLUB debugging may be switched
- off in a kernel built with CONFIG_SLUB_DEBUG_ON by specifying
- "slub_debug=-".
-
-config SLUB_STATS
- default n
- bool "Enable SLUB performance statistics"
- depends on SLUB && SYSFS
- help
- SLUB statistics are useful to debug SLUBs allocation behavior in
- order find ways to optimize the allocator. This should never be
- enabled for production use since keeping statistics slows down
- the allocator by a few percentage points. The slabinfo command
- supports the determination of the most active slabs to figure
- out which slabs are relevant to a particular load.
- Try running: slabinfo -DA
-
-config HAVE_DEBUG_KMEMLEAK
- bool
-
-config DEBUG_KMEMLEAK
- bool "Kernel memory leak detector"
- depends on DEBUG_KERNEL && HAVE_DEBUG_KMEMLEAK
- select DEBUG_FS
- select STACKTRACE if STACKTRACE_SUPPORT
- select KALLSYMS
- select CRC32
- help
- Say Y here if you want to enable the memory leak
- detector. The memory allocation/freeing is traced in a way
- similar to the Boehm's conservative garbage collector, the
- difference being that the orphan objects are not freed but
- only shown in /sys/kernel/debug/kmemleak. Enabling this
- feature will introduce an overhead to memory
- allocations. See Documentation/kmemleak.txt for more
- details.
-
- Enabling DEBUG_SLAB or SLUB_DEBUG may increase the chances
- of finding leaks due to the slab objects poisoning.
+ depends on DETECT_HUNG_TASK
+ range 0 1
+ default 0 if !BOOTPARAM_HUNG_TASK_PANIC
+ default 1 if BOOTPARAM_HUNG_TASK_PANIC
- In order to access the kmemleak file, debugfs needs to be
- mounted (usually at /sys/kernel/debug).
+endmenu # "Debug lockups and hangs"
-config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
- int "Maximum kmemleak early log entries"
- depends on DEBUG_KMEMLEAK
- range 200 40000
- default 400
+config PANIC_ON_OOPS
+ bool "Panic on Oops"
help
- Kmemleak must track all the memory allocations to avoid
- reporting false positives. Since memory may be allocated or
- freed before kmemleak is initialised, an early log buffer is
- used to store these actions. If kmemleak reports "early log
- buffer exceeded", please increase this value.
+ Say Y here to enable the kernel to panic when it oopses. This
+ has the same effect as setting oops=panic on the kernel command
+ line.
-config DEBUG_KMEMLEAK_TEST
- tristate "Simple test for the kernel memory leak detector"
- depends on DEBUG_KMEMLEAK && m
+ This feature is useful to ensure that the kernel does not do
+ anything erroneous after an oops which could result in data
+ corruption or other issues.
+
+ Say N if unsure.
+
+config PANIC_ON_OOPS_VALUE
+ int
+ range 0 1
+ default 0 if !PANIC_ON_OOPS
+ default 1 if PANIC_ON_OOPS
+
+config SCHED_DEBUG
+ bool "Collect scheduler debugging info"
+ depends on DEBUG_KERNEL && PROC_FS
+ default y
help
- This option enables a module that explicitly leaks memory.
+ If you say Y here, the /proc/sched_debug file will be provided
+ that can help debug the scheduler. The runtime overhead of this
+ option is minimal.
- If unsure, say N.
+config SCHEDSTATS
+ bool "Collect scheduler statistics"
+ depends on DEBUG_KERNEL && PROC_FS
+ help
+ If you say Y here, additional code will be inserted into the
+ scheduler and related routines to collect statistics about
+ scheduler behavior and provide them in /proc/schedstat. These
+ stats may be useful for both tuning and debugging the scheduler
+ If you aren't debugging the scheduler or trying to tune a specific
+ application, you can say N to avoid the very slight overhead
+ this adds.
-config DEBUG_KMEMLEAK_DEFAULT_OFF
- bool "Default kmemleak to off"
- depends on DEBUG_KMEMLEAK
+config TIMER_STATS
+ bool "Collect kernel timers statistics"
+ depends on DEBUG_KERNEL && PROC_FS
help
- Say Y here to disable kmemleak by default. It can then be enabled
- on the command line via kmemleak=on.
+ If you say Y here, additional code will be inserted into the
+ timer routines to collect statistics about kernel timers being
+ reprogrammed. The statistics can be read from /proc/timer_stats.
+ The statistics collection is started by writing 1 to /proc/timer_stats,
+ writing 0 stops it. This feature is useful to collect information
+ about timer usage patterns in kernel and userspace. This feature
+ is lightweight if enabled in the kernel config but not activated
+ (it defaults to deactivated on bootup and will only be activated
+ if some application like powertop activates it explicitly).
config DEBUG_PREEMPT
bool "Debug preemptible kernel"
if kernel code uses it in a preemption-unsafe way. Also, the kernel
will detect preemption count underflows.
+menu "Lock Debugging (spinlocks, mutexes, etc...)"
+
config DEBUG_RT_MUTEXES
bool "RT Mutex debugging, deadlock detection"
depends on DEBUG_KERNEL && RT_MUTEXES
This feature allows mutex semantics violations to be detected and
reported.
+config DEBUG_WW_MUTEX_SLOWPATH
+ bool "Wait/wound mutex debugging: Slowpath testing"
+ depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+ select DEBUG_LOCK_ALLOC
+ select DEBUG_SPINLOCK
+ select DEBUG_MUTEXES
+ help
+ This feature enables slowpath testing for w/w mutex users by
+ injecting additional -EDEADLK wound/backoff cases. Together with
+ the full mutex checks enabled with (CONFIG_PROVE_LOCKING) this
+ will test all possible w/w mutex interface abuse with the
+ exception of simply not acquiring all the required locks.
+
config DEBUG_LOCK_ALLOC
bool "Lock debugging: detect incorrect freeing of live locks"
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
additional runtime checks to debug itself, at the price
of more runtime overhead.
-config TRACE_IRQFLAGS
- bool
- help
- Enables hooks to interrupt enabling and disabling for
- either tracing or lock debugging.
-
config DEBUG_ATOMIC_SLEEP
bool "Sleep inside atomic section checking"
select PREEMPT_COUNT
The following locking APIs are covered: spinlocks, rwlocks,
mutexes and rwsems.
-config STACKTRACE
- bool
- depends on STACKTRACE_SUPPORT
+endmenu # lock debugging
-config DEBUG_STACK_USAGE
- bool "Stack utilization instrumentation"
- depends on DEBUG_KERNEL && !IA64 && !PARISC && !METAG
+config TRACE_IRQFLAGS
+ bool
help
- Enables the display of the minimum amount of free stack which each
- task has ever had available in the sysrq-T and sysrq-P debug output.
+ Enables hooks to interrupt enabling and disabling for
+ either tracing or lock debugging.
- This option will slow down process creation somewhat.
+config STACKTRACE
+ bool
+ depends on STACKTRACE_SUPPORT
config DEBUG_KOBJECT
bool "kobject debugging"
If you say Y here, some extra kobject debugging messages will be sent
to the syslog.
-config DEBUG_HIGHMEM
- bool "Highmem debugging"
- depends on DEBUG_KERNEL && HIGHMEM
- help
- This options enables addition error checking for high memory systems.
- Disable for production systems.
-
config HAVE_DEBUG_BUGVERBOSE
bool
of the BUG call as well as the EIP and oops trace. This aids
debugging but costs about 70-100K of memory.
-config DEBUG_INFO
- bool "Compile the kernel with debug info"
- depends on DEBUG_KERNEL
- help
- If you say Y here the resulting kernel image will include
- debugging info resulting in a larger kernel image.
- This adds debug symbols to the kernel and modules (gcc -g), and
- is needed if you intend to use kernel crashdump or binary object
- tools like crash, kgdb, LKCD, gdb, etc on the kernel.
- Say Y here only if you plan to debug the kernel.
-
- If unsure, say N.
-
-config DEBUG_INFO_REDUCED
- bool "Reduce debugging information"
- depends on DEBUG_INFO
- help
- If you say Y here gcc is instructed to generate less debugging
- information for structure types. This means that tools that
- need full debugging information (like kgdb or systemtap) won't
- be happy. But if you merely need debugging information to
- resolve line numbers there is no loss. Advantage is that
- build directory object sizes shrink dramatically over a full
- DEBUG_INFO build and compile times are reduced too.
- Only works with newer gcc versions.
-
-config DEBUG_VM
- bool "Debug VM"
- depends on DEBUG_KERNEL
- help
- Enable this to turn on extended checks in the virtual-memory system
- that may impact performance.
-
- If unsure, say N.
-
-config DEBUG_VM_RB
- bool "Debug VM red-black trees"
- depends on DEBUG_VM
- help
- Enable this to turn on more extended checks in the virtual-memory
- system that may impact performance.
-
- If unsure, say N.
-
-config DEBUG_VIRTUAL
- bool "Debug VM translations"
- depends on DEBUG_KERNEL && X86
- help
- Enable some costly sanity checks in virtual to page code. This can
- catch mistakes with virt_to_page() and friends.
-
- If unsure, say N.
-
-config DEBUG_NOMMU_REGIONS
- bool "Debug the global anon/private NOMMU mapping region tree"
- depends on DEBUG_KERNEL && !MMU
- help
- This option causes the global tree of anonymous and private mapping
- regions to be regularly checked for invalid topology.
-
config DEBUG_WRITECOUNT
bool "Debug filesystem writers count"
depends on DEBUG_KERNEL
If unsure, say N.
-config DEBUG_MEMORY_INIT
- bool "Debug memory initialisation" if EXPERT
- default !EXPERT
- help
- Enable this for additional checks during memory initialisation.
- The sanity checks verify aspects of the VM such as the memory model
- and other information provided by the architecture. Verbose
- information will be printed at KERN_DEBUG loglevel depending
- on the mminit_loglevel= command-line option.
-
- If unsure, say Y
-
config DEBUG_LIST
bool "Debug linked list manipulation"
depends on DEBUG_KERNEL
If unsure, say N.
-config TEST_LIST_SORT
- bool "Linked list sorting test"
- depends on DEBUG_KERNEL
- help
- Enable this to turn on 'list_sort()' function test. This test is
- executed only once during system boot, so affects only boot time.
-
- If unsure, say N.
-
config DEBUG_SG
bool "Debug SG table operations"
depends on DEBUG_KERNEL
If unsure, say N.
-#
-# Select this config option from the architecture Kconfig, if it
-# is preferred to always offer frame pointers as a config
-# option on the architecture (regardless of KERNEL_DEBUG):
-#
-config ARCH_WANT_FRAME_POINTERS
- bool
- help
-
-config FRAME_POINTER
- bool "Compile the kernel with frame pointers"
- depends on DEBUG_KERNEL && \
- (CRIS || M68K || FRV || UML || \
- AVR32 || SUPERH || BLACKFIN || MN10300 || METAG) || \
- ARCH_WANT_FRAME_POINTERS
- default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
- help
- If you say Y here the resulting kernel image will be slightly
- larger and slower, but it gives very useful debugging information
- in case of kernel bugs. (precise oopses/stacktraces/warnings)
-
-config BOOT_PRINTK_DELAY
- bool "Delay each boot printk message by N milliseconds"
- depends on DEBUG_KERNEL && PRINTK && GENERIC_CALIBRATE_DELAY
- help
- This build option allows you to read kernel boot messages
- by inserting a short delay after each one. The delay is
- specified in milliseconds on the kernel command line,
- using "boot_delay=N".
-
- It is likely that you would also need to use "lpj=M" to preset
- the "loops per jiffie" value.
- See a previous boot log for the "lpj" value to use for your
- system, and then set "lpj=M" before setting "boot_delay=N".
- NOTE: Using this option may adversely affect SMP systems.
- I.e., processors other than the first one may not boot up.
- BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
- what it believes to be lockup conditions.
-
menu "RCU Debugging"
config PROVE_RCU
Say Y if you want to enable such diagnostics.
-config RCU_TRACE
- bool "Enable tracing for RCU"
- depends on DEBUG_KERNEL
- select TRACE_CLOCK
- help
- This option provides tracing in RCU which presents stats
- in debugfs for debugging RCU implementation.
-
- Say Y here if you want to enable RCU tracing
- Say N if you are unsure.
-
-endmenu # "RCU Debugging"
-
-config KPROBES_SANITY_TEST
- bool "Kprobes sanity tests"
- depends on DEBUG_KERNEL
- depends on KPROBES
- default n
- help
- This option provides for testing basic kprobes functionality on
- boot. A sample kprobe, jprobe and kretprobe are inserted and
- verified for functionality.
-
- Say N if you are unsure.
-
-config BACKTRACE_SELF_TEST
- tristate "Self test for the backtrace code"
+config RCU_TRACE
+ bool "Enable tracing for RCU"
depends on DEBUG_KERNEL
- default n
+ select TRACE_CLOCK
help
- This option provides a kernel module that can be used to test
- the kernel stack backtrace code. This option is not useful
- for distributions or general kernels, but only for kernel
- developers working on architecture code.
-
- Note that if you want to also test saved backtraces, you will
- have to enable STACKTRACE as well.
+ This option provides tracing in RCU which presents stats
+ in debugfs for debugging RCU implementation.
+ Say Y here if you want to enable RCU tracing
Say N if you are unsure.
+endmenu # "RCU Debugging"
+
config DEBUG_BLOCK_EXT_DEVT
bool "Force extended block device numbers and spread them"
depends on DEBUG_KERNEL
Say N if you are unsure.
-config DEBUG_FORCE_WEAK_PER_CPU
- bool "Force weak per-cpu definitions"
- depends on DEBUG_KERNEL
- help
- s390 and alpha require percpu variables in modules to be
- defined weak to work around addressing range issue which
- puts the following two restrictions on percpu variable
- definitions.
-
- 1. percpu symbols must be unique whether static or not
- 2. percpu variables can't be defined inside a function
-
- To ensure that generic code follows the above rules, this
- option forces all percpu variables to be defined as weak.
-
-config DEBUG_PER_CPU_MAPS
- bool "Debug access to per_cpu maps"
- depends on DEBUG_KERNEL
- depends on SMP
- help
- Say Y to verify that the per_cpu map being accessed has
- been set up. This adds a fair amount of code to kernel memory
- and decreases performance.
-
- Say N if unsure.
-
-config LKDTM
- tristate "Linux Kernel Dump Test Tool Module"
- depends on DEBUG_FS
- depends on BLOCK
- default n
- help
- This module enables testing of the different dumping mechanisms by
- inducing system failures at predefined crash points.
- If you don't need it: say N
- Choose M here to compile this code as a module. The module will be
- called lkdtm.
-
- Documentation on how to use the module can be found in
- Documentation/fault-injection/provoke-crashes.txt
-
config NOTIFIER_ERROR_INJECTION
tristate "Notifier error injection"
depends on DEBUG_KERNEL
If unsure, say N.
-config MEMORY_NOTIFIER_ERROR_INJECT
- tristate "Memory hotplug notifier error injection module"
- depends on MEMORY_HOTPLUG_SPARSE && NOTIFIER_ERROR_INJECTION
- help
- This option provides the ability to inject artificial errors to
- memory hotplug notifier chain callbacks. It is controlled through
- debugfs interface under /sys/kernel/debug/notifier-error-inject/memory
-
- If the notifier call chain should be failed with some events
- notified, write the error code to "actions/<notifier event>/error".
-
- Example: Inject memory hotplug offline error (-12 == -ENOMEM)
-
- # cd /sys/kernel/debug/notifier-error-inject/memory
- # echo -12 > actions/MEM_GOING_OFFLINE/error
- # echo offline > /sys/devices/system/memory/memoryXXX/state
- bash: echo: write error: Cannot allocate memory
-
- To compile this code as a module, choose M here: the module will
- be called memory-notifier-error-inject.
-
- If unsure, say N.
-
config OF_RECONFIG_NOTIFIER_ERROR_INJECT
tristate "OF reconfig notifier error injection module"
depends on OF_DYNAMIC && NOTIFIER_ERROR_INJECTION
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
- select FRAME_POINTER if !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND
+ select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND
help
Provide stacktrace filter for fault-injection capabilities
If unsure, say N.
-source mm/Kconfig.debug
source kernel/trace/Kconfig
+menu "Runtime Testing"
+
+config LKDTM
+ tristate "Linux Kernel Dump Test Tool Module"
+ depends on DEBUG_FS
+ depends on BLOCK
+ default n
+ help
+ This module enables testing of the different dumping mechanisms by
+ inducing system failures at predefined crash points.
+ If you don't need it: say N
+ Choose M here to compile this code as a module. The module will be
+ called lkdtm.
+
+ Documentation on how to use the module can be found in
+ Documentation/fault-injection/provoke-crashes.txt
+
+config TEST_LIST_SORT
+ bool "Linked list sorting test"
+ depends on DEBUG_KERNEL
+ help
+ Enable this to turn on 'list_sort()' function test. This test is
+ executed only once during system boot, so affects only boot time.
+
+ If unsure, say N.
+
+config KPROBES_SANITY_TEST
+ bool "Kprobes sanity tests"
+ depends on DEBUG_KERNEL
+ depends on KPROBES
+ default n
+ help
+ This option provides for testing basic kprobes functionality on
+ boot. A sample kprobe, jprobe and kretprobe are inserted and
+ verified for functionality.
+
+ Say N if you are unsure.
+
+config BACKTRACE_SELF_TEST
+ tristate "Self test for the backtrace code"
+ depends on DEBUG_KERNEL
+ default n
+ help
+ This option provides a kernel module that can be used to test
+ the kernel stack backtrace code. This option is not useful
+ for distributions or general kernels, but only for kernel
+ developers working on architecture code.
+
+ Note that if you want to also test saved backtraces, you will
+ have to enable STACKTRACE as well.
+
+ Say N if you are unsure.
+
config RBTREE_TEST
tristate "Red-Black tree test"
depends on m && DEBUG_KERNEL
help
A benchmark measuring the performance of the interval tree library
+config ATOMIC64_SELFTEST
+ bool "Perform an atomic64_t self-test at boot"
+ help
+ Enable this option to test the atomic64_t functions at boot.
+
+ If unsure, say N.
+
+config ASYNC_RAID6_TEST
+ tristate "Self test for hardware accelerated raid6 recovery"
+ depends on ASYNC_RAID6_RECOV
+ select ASYNC_MEMCPY
+ ---help---
+ This is a one-shot self test that permutes through the
+ recovery of all the possible two disk failure scenarios for a
+ N-disk array. Recovery is performed with the asynchronous
+ raid6 recovery routines, and will optionally use an offload
+ engine if one is available.
+
+ If unsure, say N.
+
+config TEST_STRING_HELPERS
+ tristate "Test functions located in the string_helpers module at runtime"
+
+config TEST_KSTRTOX
+ tristate "Test kstrto*() family of functions at runtime"
+
+endmenu # runtime tests
+
config PROVIDE_OHCI1394_DMA_INIT
bool "Remote debugging over FireWire early on boot"
depends on PCI && X86
Say N if you are unsure.
-config DYNAMIC_DEBUG
- bool "Enable dynamic printk() support"
- default n
- depends on PRINTK
- depends on DEBUG_FS
- help
-
- Compiles debug level messages into the kernel, which would not
- otherwise be available at runtime. These messages can then be
- enabled/disabled based on various levels of scope - per source file,
- function, module, format string, and line number. This mechanism
- implicitly compiles in all pr_debug() and dev_dbg() calls, which
- enlarges the kernel text size by about 2%.
-
- If a source file is compiled with DEBUG flag set, any
- pr_debug() calls in it are enabled by default, but can be
- disabled at runtime as below. Note that DEBUG flag is
- turned on by many CONFIG_*DEBUG* options.
-
- Usage:
-
- Dynamic debugging is controlled via the 'dynamic_debug/control' file,
- which is contained in the 'debugfs' filesystem. Thus, the debugfs
- filesystem must first be mounted before making use of this feature.
- We refer the control file as: <debugfs>/dynamic_debug/control. This
- file contains a list of the debug statements that can be enabled. The
- format for each line of the file is:
-
- filename:lineno [module]function flags format
-
- filename : source file of the debug statement
- lineno : line number of the debug statement
- module : module that contains the debug statement
- function : function that contains the debug statement
- flags : '=p' means the line is turned 'on' for printing
- format : the format used for the debug statement
-
- From a live system:
-
- nullarbor:~ # cat <debugfs>/dynamic_debug/control
- # filename:lineno [module]function flags format
- fs/aio.c:222 [aio]__put_ioctx =_ "__put_ioctx:\040freeing\040%p\012"
- fs/aio.c:248 [aio]ioctx_alloc =_ "ENOMEM:\040nr_events\040too\040high\012"
- fs/aio.c:1770 [aio]sys_io_cancel =_ "calling\040cancel\012"
-
- Example usage:
-
- // enable the message at line 1603 of file svcsock.c
- nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
- <debugfs>/dynamic_debug/control
-
- // enable all the messages in file svcsock.c
- nullarbor:~ # echo -n 'file svcsock.c +p' >
- <debugfs>/dynamic_debug/control
-
- // enable all the messages in the NFS server module
- nullarbor:~ # echo -n 'module nfsd +p' >
- <debugfs>/dynamic_debug/control
-
- // enable all 12 messages in the function svc_process()
- nullarbor:~ # echo -n 'func svc_process +p' >
- <debugfs>/dynamic_debug/control
-
- // disable all 12 messages in the function svc_process()
- nullarbor:~ # echo -n 'func svc_process -p' >
- <debugfs>/dynamic_debug/control
-
- See Documentation/dynamic-debug-howto.txt for additional information.
-
config DMA_API_DEBUG
bool "Enable debugging of DMA-API usage"
depends on HAVE_DMA_API_DEBUG
This option causes a performance degredation. Use only if you want
to debug device drivers. If unsure, say N.
-config ATOMIC64_SELFTEST
- bool "Perform an atomic64_t self-test at boot"
- help
- Enable this option to test the atomic64_t functions at boot.
-
- If unsure, say N.
-
-config ASYNC_RAID6_TEST
- tristate "Self test for hardware accelerated raid6 recovery"
- depends on ASYNC_RAID6_RECOV
- select ASYNC_MEMCPY
- ---help---
- This is a one-shot self test that permutes through the
- recovery of all the possible two disk failure scenarios for a
- N-disk array. Recovery is performed with the asynchronous
- raid6 recovery routines, and will optionally use an offload
- engine if one is available.
-
- If unsure, say N.
-
source "samples/Kconfig"
source "lib/Kconfig.kgdb"
-source "lib/Kconfig.kmemcheck"
-
-config TEST_STRING_HELPERS
- tristate "Test functions located in the string_helpers module at runtime"
-
-config TEST_KSTRTOX
- tristate "Test kstrto*() family of functions at runtime"
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