--- /dev/null
+Pinctrl-based I2C Bus Mux
+
+This binding describes an I2C bus multiplexer that uses pin multiplexing to
+route the I2C signals, and represents the pin multiplexing configuration
+using the pinctrl device tree bindings.
+
+ +-----+ +-----+
+ | dev | | dev |
+ +------------------------+ +-----+ +-----+
+ | SoC | | |
+ | /----|------+--------+
+ | +---+ +------+ | child bus A, on first set of pins
+ | |I2C|---|Pinmux| |
+ | +---+ +------+ | child bus B, on second set of pins
+ | \----|------+--------+--------+
+ | | | | |
+ +------------------------+ +-----+ +-----+ +-----+
+ | dev | | dev | | dev |
+ +-----+ +-----+ +-----+
+
+Required properties:
+- compatible: i2c-mux-pinctrl
+- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side
+ port is connected to.
+
+Also required are:
+
+* Standard pinctrl properties that specify the pin mux state for each child
+ bus. See ../pinctrl/pinctrl-bindings.txt.
+
+* Standard I2C mux properties. See mux.txt in this directory.
+
+* I2C child bus nodes. See mux.txt in this directory.
+
+For each named state defined in the pinctrl-names property, an I2C child bus
+will be created. I2C child bus numbers are assigned based on the index into
+the pinctrl-names property.
+
+The only exception is that no bus will be created for a state named "idle". If
+such a state is defined, it must be the last entry in pinctrl-names. For
+example:
+
+ pinctrl-names = "ddc", "pta", "idle" -> ddc = bus 0, pta = bus 1
+ pinctrl-names = "ddc", "idle", "pta" -> Invalid ("idle" not last)
+ pinctrl-names = "idle", "ddc", "pta" -> Invalid ("idle" not last)
+
+Whenever an access is made to a device on a child bus, the relevant pinctrl
+state will be programmed into hardware.
+
+If an idle state is defined, whenever an access is not being made to a device
+on a child bus, the idle pinctrl state will be programmed into hardware.
+
+If an idle state is not defined, the most recently used pinctrl state will be
+left programmed into hardware whenever no access is being made of a device on
+a child bus.
+
+Example:
+
+ i2cmux {
+ compatible = "i2c-mux-pinctrl";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c-parent = <&i2c1>;
+
+ pinctrl-names = "ddc", "pta", "idle";
+ pinctrl-0 = <&state_i2cmux_ddc>;
+ pinctrl-1 = <&state_i2cmux_pta>;
+ pinctrl-2 = <&state_i2cmux_idle>;
+
+ i2c@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ eeprom {
+ compatible = "eeprom";
+ reg = <0x50>;
+ };
+ };
+
+ i2c@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ eeprom {
+ compatible = "eeprom";
+ reg = <0x50>;
+ };
+ };
+ };
+
ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
M: Kyungmin Park <kyungmin.park@samsung.com>
M: Kamil Debski <k.debski@samsung.com>
-M: Jeongtae Park <jtp.park@samsung.com>
+M: Jeongtae Park <jtp.park@samsung.com>
L: linux-arm-kernel@lists.infradead.org
L: linux-media@vger.kernel.org
S: Maintained
CAPABILITIES
M: Serge Hallyn <serge.hallyn@canonical.com>
L: linux-security-module@vger.kernel.org
-S: Supported
+S: Supported
F: include/linux/capability.h
F: security/capability.c
-F: security/commoncap.c
+F: security/commoncap.c
F: kernel/capability.c
CELL BROADBAND ENGINE ARCHITECTURE
F: drivers/net/wan/pc300*
CYTTSP TOUCHSCREEN DRIVER
-M: Javier Martinez Canillas <javier@dowhile0.org>
-L: linux-input@vger.kernel.org
-S: Maintained
-F: drivers/input/touchscreen/cyttsp*
-F: include/linux/input/cyttsp.h
+M: Javier Martinez Canillas <javier@dowhile0.org>
+L: linux-input@vger.kernel.org
+S: Maintained
+F: drivers/input/touchscreen/cyttsp*
+F: include/linux/input/cyttsp.h
DAMA SLAVE for AX.25
M: Joerg Reuter <jreuter@yaina.de>
F: include/linux/dm-*.h
DIOLAN U2C-12 I2C DRIVER
-M: Guenter Roeck <guenter.roeck@ericsson.com>
+M: Guenter Roeck <linux@roeck-us.net>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/busses/i2c-diolan-u2c.c
HARDWARE MONITORING
M: Jean Delvare <khali@linux-fr.org>
-M: Guenter Roeck <guenter.roeck@ericsson.com>
+M: Guenter Roeck <linux@roeck-us.net>
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.org/
T: quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-hwmon/
LED SUBSYSTEM
M: Bryan Wu <bryan.wu@canonical.com>
M: Richard Purdie <rpurdie@rpsys.net>
+L: linux-leds@vger.kernel.org
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds.git
S: Maintained
F: drivers/leds/
F: include/linux/leds.h
F: drivers/video/matrox/matroxfb_*
F: include/linux/matroxfb.h
+MAX16065 HARDWARE MONITOR DRIVER
+M: Guenter Roeck <linux@roeck-us.net>
+L: lm-sensors@lm-sensors.org
+S: Maintained
+F: Documentation/hwmon/max16065
+F: drivers/hwmon/max16065.c
+
MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
M: "Hans J. Koch" <hjk@hansjkoch.de>
L: lm-sensors@lm-sensors.org
F: include/linux/leds-pca9532.h
PCA9541 I2C BUS MASTER SELECTOR DRIVER
-M: Guenter Roeck <guenter.roeck@ericsson.com>
+M: Guenter Roeck <linux@roeck-us.net>
L: linux-i2c@vger.kernel.org
S: Maintained
F: drivers/i2c/muxes/i2c-mux-pca9541.c
F: drivers/firmware/pcdp.*
PCI ERROR RECOVERY
-M: Linas Vepstas <linasvepstas@gmail.com>
+M: Linas Vepstas <linasvepstas@gmail.com>
L: linux-pci@vger.kernel.org
S: Supported
F: Documentation/PCI/pci-error-recovery.txt
F: drivers/rtc/rtc-puv3.c
PMBUS HARDWARE MONITORING DRIVERS
-M: Guenter Roeck <guenter.roeck@ericsson.com>
+M: Guenter Roeck <linux@roeck-us.net>
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.org/
W: http://www.roeck-us.net/linux/drivers/
F: drivers/uio/
F: include/linux/uio*.h
-UTIL-LINUX-NG PACKAGE
+UTIL-LINUX PACKAGE
M: Karel Zak <kzak@redhat.com>
-L: util-linux-ng@vger.kernel.org
-W: http://kernel.org/~kzak/util-linux-ng/
-T: git git://git.kernel.org/pub/scm/utils/util-linux-ng/util-linux-ng.git
+L: util-linux@vger.kernel.org
+W: http://en.wikipedia.org/wiki/Util-linux
+T: git git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git
S: Maintained
UVESAFB DRIVER
select HAVE_IDE if PCI || ISA || PCMCIA
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS if (CPU_V6 || CPU_V6K || CPU_V7)
- select CMA if (CPU_V6 || CPU_V6K || CPU_V7)
select HAVE_MEMBLOCK
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
unsigned long base = consistent_base;
unsigned long num_ptes = (CONSISTENT_END - base) >> PMD_SHIFT;
-#ifndef CONFIG_ARM_DMA_USE_IOMMU
- if (cpu_architecture() >= CPU_ARCH_ARMv6)
+ if (IS_ENABLED(CONFIG_CMA) && !IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU))
return 0;
-#endif
consistent_pte = kmalloc(num_ptes * sizeof(pte_t), GFP_KERNEL);
if (!consistent_pte) {
struct page *page;
void *ptr;
- if (cpu_architecture() < CPU_ARCH_ARMv6)
+ if (!IS_ENABLED(CONFIG_CMA))
return 0;
ptr = __alloc_from_contiguous(NULL, size, prot, &page);
if (arch_is_coherent() || nommu())
addr = __alloc_simple_buffer(dev, size, gfp, &page);
- else if (cpu_architecture() < CPU_ARCH_ARMv6)
+ else if (!IS_ENABLED(CONFIG_CMA))
addr = __alloc_remap_buffer(dev, size, gfp, prot, &page, caller);
else if (gfp & GFP_ATOMIC)
addr = __alloc_from_pool(dev, size, &page, caller);
if (arch_is_coherent() || nommu()) {
__dma_free_buffer(page, size);
- } else if (cpu_architecture() < CPU_ARCH_ARMv6) {
+ } else if (!IS_ENABLED(CONFIG_CMA)) {
__dma_free_remap(cpu_addr, size);
__dma_free_buffer(page, size);
} else {
unsigned long newsp;
#ifdef __ARCH_SYNC_CORE_DCACHE
- if (current->rt.nr_cpus_allowed == num_possible_cpus())
+ if (current->nr_cpus_allowed == num_possible_cpus())
set_cpus_allowed_ptr(current, cpumask_of(smp_processor_id()));
#endif
NM = sh $(srctree)/arch/parisc/nm
CHECKFLAGS += -D__hppa__=1
+LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
MACHINE := $(shell uname -m)
ifeq ($(MACHINE),parisc*)
kernel-$(CONFIG_HPUX) += hpux/
core-y += $(addprefix arch/parisc/, $(kernel-y))
-libs-y += arch/parisc/lib/ `$(CC) -print-libgcc-file-name`
+libs-y += arch/parisc/lib/ $(LIBGCC)
drivers-$(CONFIG_OPROFILE) += arch/parisc/oprofile/
include include/asm-generic/Kbuild.asm
header-y += pdc.h
+generic-y += word-at-a-time.h
#ifndef _PARISC_BUG_H
#define _PARISC_BUG_H
+#include <linux/kernel.h> /* for BUGFLAG_TAINT */
+
/*
* Tell the user there is some problem.
* The offending file and line are encoded in the __bug_table section.
/* Enable interrupts racelessly and nap forever: helper for cpu_idle(). */
extern void _cpu_idle(void);
-/* Switch boot idle thread to a freshly-allocated stack and free old stack. */
-extern void cpu_idle_on_new_stack(struct thread_info *old_ti,
- unsigned long new_sp,
- unsigned long new_ss10);
-
#else /* __ASSEMBLY__ */
/*
jrp lr /* keep backtracer happy */
STD_ENDPROC(KBacktraceIterator_init_current)
-/*
- * Reset our stack to r1/r2 (sp and ksp0+cpu respectively), then
- * free the old stack (passed in r0) and re-invoke cpu_idle().
- * We update sp and ksp0 simultaneously to avoid backtracer warnings.
- */
-STD_ENTRY(cpu_idle_on_new_stack)
- {
- move sp, r1
- mtspr SPR_SYSTEM_SAVE_K_0, r2
- }
- jal free_thread_info
- j cpu_idle
- STD_ENDPROC(cpu_idle_on_new_stack)
-
/* Loop forever on a nap during SMP boot. */
STD_ENTRY(smp_nap)
nap
#include <linux/smp.h>
#include <linux/timex.h>
#include <linux/hugetlb.h>
+#include <linux/start_kernel.h>
#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/cacheflush.h>
*/
iv = __this_cpu_read(mce_next_interval);
if (mce_notify_irq())
- iv = max(iv, (unsigned long) HZ/100);
+ iv = max(iv / 2, (unsigned long) HZ/100);
else
iv = min(iv * 2, round_jiffies_relative(check_interval * HZ));
__this_cpu_write(mce_next_interval, iv);
/* maps the cpu to the sched domain representing multi-core */
const struct cpumask *cpu_coregroup_mask(int cpu)
{
- struct cpuinfo_x86 *c = &cpu_data(cpu);
- /*
- * For perf, we return last level cache shared map.
- * And for power savings, we return cpu_core_map
- */
- if (!(cpu_has(c, X86_FEATURE_AMD_DCM)))
- return cpu_core_mask(cpu);
- else
- return cpu_llc_shared_mask(cpu);
+ return cpu_llc_shared_mask(cpu);
}
static void impress_friends(void)
config ACPI_HOTPLUG_CPU
bool
- depends on ACPI_PROCESSOR && HOTPLUG_CPU
+ depends on EXPERIMENTAL && ACPI_PROCESSOR && HOTPLUG_CPU
select ACPI_CONTAINER
default y
static void acpi_battery_refresh(struct acpi_battery *battery)
{
+ int power_unit;
+
if (!battery->bat.dev)
return;
+ power_unit = battery->power_unit;
+
acpi_battery_get_info(battery);
- /* The battery may have changed its reporting units. */
+
+ if (power_unit == battery->power_unit)
+ return;
+
+ /* The battery has changed its reporting units. */
sysfs_remove_battery(battery);
sysfs_add_battery(battery);
}
struct acpi_buffer state = { 0, NULL };
union acpi_object *pss = NULL;
int i;
+ int last_invalid = -1;
status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);
((u32)(px->core_frequency * 1000) !=
(px->core_frequency * 1000))) {
printk(KERN_ERR FW_BUG PREFIX
- "Invalid BIOS _PSS frequency: 0x%llx MHz\n",
- px->core_frequency);
- result = -EFAULT;
- kfree(pr->performance->states);
- goto end;
+ "Invalid BIOS _PSS frequency found for processor %d: 0x%llx MHz\n",
+ pr->id, px->core_frequency);
+ if (last_invalid == -1)
+ last_invalid = i;
+ } else {
+ if (last_invalid != -1) {
+ /*
+ * Copy this valid entry over last_invalid entry
+ */
+ memcpy(&(pr->performance->states[last_invalid]),
+ px, sizeof(struct acpi_processor_px));
+ ++last_invalid;
+ }
}
}
+ if (last_invalid == 0) {
+ printk(KERN_ERR FW_BUG PREFIX
+ "No valid BIOS _PSS frequency found for processor %d\n", pr->id);
+ result = -EFAULT;
+ kfree(pr->performance->states);
+ pr->performance->states = NULL;
+ }
+
+ if (last_invalid > 0)
+ pr->performance->state_count = last_invalid;
+
end:
kfree(buffer.pointer);
set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
set_bit(KEY_DISPLAY_OFF, input->keybit);
- error = input_register_device(input);
- if (error)
- goto err_stop_video;
-
printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
video->flags.multihead ? "yes" : "no",
video->pm_nb.priority = 0;
error = register_pm_notifier(&video->pm_nb);
if (error)
- goto err_unregister_input_dev;
+ goto err_stop_video;
+
+ error = input_register_device(input);
+ if (error)
+ goto err_unregister_pm_notifier;
return 0;
- err_unregister_input_dev:
- input_unregister_device(input);
+ err_unregister_pm_notifier:
+ unregister_pm_notifier(&video->pm_nb);
err_stop_video:
acpi_video_bus_stop_devices(video);
err_free_input_dev:
return 0;
}
+static int __init is_i740(struct pci_dev *dev)
+{
+ if (dev->device == 0x00D1)
+ return 1;
+ if (dev->device == 0x7000)
+ return 1;
+ return 0;
+}
+
static int __init intel_opregion_present(void)
{
-#if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE)
+ int opregion = 0;
struct pci_dev *dev = NULL;
u32 address;
continue;
if (dev->vendor != PCI_VENDOR_ID_INTEL)
continue;
+ /* We don't want to poke around undefined i740 registers */
+ if (is_i740(dev))
+ continue;
pci_read_config_dword(dev, 0xfc, &address);
if (!address)
continue;
- return 1;
+ opregion = 1;
}
-#endif
- return 0;
+ return opregion;
}
int acpi_video_register(void)
This driver can also be built as a module. If so, the module
will be called i2c-mux-pca954x.
+config I2C_MUX_PINCTRL
+ tristate "pinctrl-based I2C multiplexer"
+ depends on PINCTRL
+ help
+ If you say yes to this option, support will be included for an I2C
+ multiplexer that uses the pinctrl subsystem, i.e. pin multiplexing.
+ This is useful for SoCs whose I2C module's signals can be routed to
+ different sets of pins at run-time.
+
+ This driver can also be built as a module. If so, the module will be
+ called pinctrl-i2cmux.
+
endmenu
obj-$(CONFIG_I2C_MUX_GPIO) += i2c-mux-gpio.o
obj-$(CONFIG_I2C_MUX_PCA9541) += i2c-mux-pca9541.o
obj-$(CONFIG_I2C_MUX_PCA954x) += i2c-mux-pca954x.o
+obj-$(CONFIG_I2C_MUX_PINCTRL) += i2c-mux-pinctrl.o
ccflags-$(CONFIG_I2C_DEBUG_BUS) := -DDEBUG
--- /dev/null
+/*
+ * I2C multiplexer using pinctrl API
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/i2c.h>
+#include <linux/i2c-mux.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_i2c.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/i2c-mux-pinctrl.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+struct i2c_mux_pinctrl {
+ struct device *dev;
+ struct i2c_mux_pinctrl_platform_data *pdata;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state **states;
+ struct pinctrl_state *state_idle;
+ struct i2c_adapter *parent;
+ struct i2c_adapter **busses;
+};
+
+static int i2c_mux_pinctrl_select(struct i2c_adapter *adap, void *data,
+ u32 chan)
+{
+ struct i2c_mux_pinctrl *mux = data;
+
+ return pinctrl_select_state(mux->pinctrl, mux->states[chan]);
+}
+
+static int i2c_mux_pinctrl_deselect(struct i2c_adapter *adap, void *data,
+ u32 chan)
+{
+ struct i2c_mux_pinctrl *mux = data;
+
+ return pinctrl_select_state(mux->pinctrl, mux->state_idle);
+}
+
+#ifdef CONFIG_OF
+static int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux,
+ struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ int num_names, i, ret;
+ struct device_node *adapter_np;
+ struct i2c_adapter *adapter;
+
+ if (!np)
+ return 0;
+
+ mux->pdata = devm_kzalloc(&pdev->dev, sizeof(*mux->pdata), GFP_KERNEL);
+ if (!mux->pdata) {
+ dev_err(mux->dev,
+ "Cannot allocate i2c_mux_pinctrl_platform_data\n");
+ return -ENOMEM;
+ }
+
+ num_names = of_property_count_strings(np, "pinctrl-names");
+ if (num_names < 0) {
+ dev_err(mux->dev, "Cannot parse pinctrl-names: %d\n",
+ num_names);
+ return num_names;
+ }
+
+ mux->pdata->pinctrl_states = devm_kzalloc(&pdev->dev,
+ sizeof(*mux->pdata->pinctrl_states) * num_names,
+ GFP_KERNEL);
+ if (!mux->pdata->pinctrl_states) {
+ dev_err(mux->dev, "Cannot allocate pinctrl_states\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < num_names; i++) {
+ ret = of_property_read_string_index(np, "pinctrl-names", i,
+ &mux->pdata->pinctrl_states[mux->pdata->bus_count]);
+ if (ret < 0) {
+ dev_err(mux->dev, "Cannot parse pinctrl-names: %d\n",
+ ret);
+ return ret;
+ }
+ if (!strcmp(mux->pdata->pinctrl_states[mux->pdata->bus_count],
+ "idle")) {
+ if (i != num_names - 1) {
+ dev_err(mux->dev, "idle state must be last\n");
+ return -EINVAL;
+ }
+ mux->pdata->pinctrl_state_idle = "idle";
+ } else {
+ mux->pdata->bus_count++;
+ }
+ }
+
+ adapter_np = of_parse_phandle(np, "i2c-parent", 0);
+ if (!adapter_np) {
+ dev_err(mux->dev, "Cannot parse i2c-parent\n");
+ return -ENODEV;
+ }
+ adapter = of_find_i2c_adapter_by_node(adapter_np);
+ if (!adapter) {
+ dev_err(mux->dev, "Cannot find parent bus\n");
+ return -ENODEV;
+ }
+ mux->pdata->parent_bus_num = i2c_adapter_id(adapter);
+ put_device(&adapter->dev);
+
+ return 0;
+}
+#else
+static inline int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux,
+ struct platform_device *pdev)
+{
+ return 0;
+}
+#endif
+
+static int __devinit i2c_mux_pinctrl_probe(struct platform_device *pdev)
+{
+ struct i2c_mux_pinctrl *mux;
+ int (*deselect)(struct i2c_adapter *, void *, u32);
+ int i, ret;
+
+ mux = devm_kzalloc(&pdev->dev, sizeof(*mux), GFP_KERNEL);
+ if (!mux) {
+ dev_err(&pdev->dev, "Cannot allocate i2c_mux_pinctrl\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+ platform_set_drvdata(pdev, mux);
+
+ mux->dev = &pdev->dev;
+
+ mux->pdata = pdev->dev.platform_data;
+ if (!mux->pdata) {
+ ret = i2c_mux_pinctrl_parse_dt(mux, pdev);
+ if (ret < 0)
+ goto err;
+ }
+ if (!mux->pdata) {
+ dev_err(&pdev->dev, "Missing platform data\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ mux->states = devm_kzalloc(&pdev->dev,
+ sizeof(*mux->states) * mux->pdata->bus_count,
+ GFP_KERNEL);
+ if (!mux->states) {
+ dev_err(&pdev->dev, "Cannot allocate states\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ mux->busses = devm_kzalloc(&pdev->dev,
+ sizeof(mux->busses) * mux->pdata->bus_count,
+ GFP_KERNEL);
+ if (!mux->states) {
+ dev_err(&pdev->dev, "Cannot allocate busses\n");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ mux->pinctrl = devm_pinctrl_get(&pdev->dev);
+ if (IS_ERR(mux->pinctrl)) {
+ ret = PTR_ERR(mux->pinctrl);
+ dev_err(&pdev->dev, "Cannot get pinctrl: %d\n", ret);
+ goto err;
+ }
+ for (i = 0; i < mux->pdata->bus_count; i++) {
+ mux->states[i] = pinctrl_lookup_state(mux->pinctrl,
+ mux->pdata->pinctrl_states[i]);
+ if (IS_ERR(mux->states[i])) {
+ ret = PTR_ERR(mux->states[i]);
+ dev_err(&pdev->dev,
+ "Cannot look up pinctrl state %s: %d\n",
+ mux->pdata->pinctrl_states[i], ret);
+ goto err;
+ }
+ }
+ if (mux->pdata->pinctrl_state_idle) {
+ mux->state_idle = pinctrl_lookup_state(mux->pinctrl,
+ mux->pdata->pinctrl_state_idle);
+ if (IS_ERR(mux->state_idle)) {
+ ret = PTR_ERR(mux->state_idle);
+ dev_err(&pdev->dev,
+ "Cannot look up pinctrl state %s: %d\n",
+ mux->pdata->pinctrl_state_idle, ret);
+ goto err;
+ }
+
+ deselect = i2c_mux_pinctrl_deselect;
+ } else {
+ deselect = NULL;
+ }
+
+ mux->parent = i2c_get_adapter(mux->pdata->parent_bus_num);
+ if (!mux->parent) {
+ dev_err(&pdev->dev, "Parent adapter (%d) not found\n",
+ mux->pdata->parent_bus_num);
+ ret = -ENODEV;
+ goto err;
+ }
+
+ for (i = 0; i < mux->pdata->bus_count; i++) {
+ u32 bus = mux->pdata->base_bus_num ?
+ (mux->pdata->base_bus_num + i) : 0;
+
+ mux->busses[i] = i2c_add_mux_adapter(mux->parent, &pdev->dev,
+ mux, bus, i,
+ i2c_mux_pinctrl_select,
+ deselect);
+ if (!mux->busses[i]) {
+ ret = -ENODEV;
+ dev_err(&pdev->dev, "Failed to add adapter %d\n", i);
+ goto err_del_adapter;
+ }
+ }
+
+ return 0;
+
+err_del_adapter:
+ for (; i > 0; i--)
+ i2c_del_mux_adapter(mux->busses[i - 1]);
+ i2c_put_adapter(mux->parent);
+err:
+ return ret;
+}
+
+static int __devexit i2c_mux_pinctrl_remove(struct platform_device *pdev)
+{
+ struct i2c_mux_pinctrl *mux = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < mux->pdata->bus_count; i++)
+ i2c_del_mux_adapter(mux->busses[i]);
+
+ i2c_put_adapter(mux->parent);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id i2c_mux_pinctrl_of_match[] __devinitconst = {
+ { .compatible = "i2c-mux-pinctrl", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, i2c_mux_pinctrl_of_match);
+#endif
+
+static struct platform_driver i2c_mux_pinctrl_driver = {
+ .driver = {
+ .name = "i2c-mux-pinctrl",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(i2c_mux_pinctrl_of_match),
+ },
+ .probe = i2c_mux_pinctrl_probe,
+ .remove = __devexit_p(i2c_mux_pinctrl_remove),
+};
+module_platform_driver(i2c_mux_pinctrl_driver);
+
+MODULE_DESCRIPTION("pinctrl-based I2C multiplexer driver");
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:i2c-mux-pinctrl");
struct net_device *pdev;
pdev = ip_dev_find(&init_net, peer_ip);
+ if (!pdev) {
+ err = -ENODEV;
+ goto out;
+ }
ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
n, pdev, 0);
if (!ep->l2t)
props->max_mr_size = ~0ull;
props->page_size_cap = dev->dev->caps.page_size_cap;
props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
- props->max_qp_wr = dev->dev->caps.max_wqes;
+ props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE;
props->max_sge = min(dev->dev->caps.max_sq_sg,
dev->dev->caps.max_rq_sg);
props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
int total_eqs = 0;
int i, j, eq;
- /* Init eq table */
- ibdev->eq_table = NULL;
- ibdev->eq_added = 0;
-
- /* Legacy mode? */
- if (dev->caps.comp_pool == 0)
+ /* Legacy mode or comp_pool is not large enough */
+ if (dev->caps.comp_pool == 0 ||
+ dev->caps.num_ports > dev->caps.comp_pool)
return;
eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
int i;
- int total_eqs;
+
+ /* no additional eqs were added */
+ if (!ibdev->eq_table)
+ return;
/* Reset the advertised EQ number */
ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
mlx4_release_eq(dev, ibdev->eq_table[i]);
}
- total_eqs = dev->caps.num_comp_vectors + ibdev->eq_added;
- memset(ibdev->eq_table, 0, total_eqs * sizeof(int));
kfree(ibdev->eq_table);
-
- ibdev->eq_table = NULL;
- ibdev->eq_added = 0;
}
static void *mlx4_ib_add(struct mlx4_dev *dev)
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
+enum {
+ MLX4_IB_SQ_MIN_WQE_SHIFT = 6,
+ MLX4_IB_MAX_HEADROOM = 2048
+};
+
+#define MLX4_IB_SQ_HEADROOM(shift) ((MLX4_IB_MAX_HEADROOM >> (shift)) + 1)
+#define MLX4_IB_SQ_MAX_SPARE (MLX4_IB_SQ_HEADROOM(MLX4_IB_SQ_MIN_WQE_SHIFT))
+
struct mlx4_ib_ucontext {
struct ib_ucontext ibucontext;
struct mlx4_uar uar;
int is_user, int has_rq, struct mlx4_ib_qp *qp)
{
/* Sanity check RQ size before proceeding */
- if (cap->max_recv_wr > dev->dev->caps.max_wqes ||
- cap->max_recv_sge > dev->dev->caps.max_rq_sg)
+ if (cap->max_recv_wr > dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE ||
+ cap->max_recv_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg))
return -EINVAL;
if (!has_rq) {
qp->rq.wqe_shift = ilog2(qp->rq.max_gs * sizeof (struct mlx4_wqe_data_seg));
}
- cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt;
- cap->max_recv_sge = qp->rq.max_gs;
+ /* leave userspace return values as they were, so as not to break ABI */
+ if (is_user) {
+ cap->max_recv_wr = qp->rq.max_post = qp->rq.wqe_cnt;
+ cap->max_recv_sge = qp->rq.max_gs;
+ } else {
+ cap->max_recv_wr = qp->rq.max_post =
+ min(dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE, qp->rq.wqe_cnt);
+ cap->max_recv_sge = min(qp->rq.max_gs,
+ min(dev->dev->caps.max_sq_sg,
+ dev->dev->caps.max_rq_sg));
+ }
return 0;
}
int s;
/* Sanity check SQ size before proceeding */
- if (cap->max_send_wr > dev->dev->caps.max_wqes ||
- cap->max_send_sge > dev->dev->caps.max_sq_sg ||
+ if (cap->max_send_wr > (dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE) ||
+ cap->max_send_sge > min(dev->dev->caps.max_sq_sg, dev->dev->caps.max_rq_sg) ||
cap->max_inline_data + send_wqe_overhead(type, qp->flags) +
sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz)
return -EINVAL;
u32 entry_size;
u32 max_cnt;
u32 max_wqe_idx;
- u32 free_delta;
u16 dbid; /* qid, where to ring the doorbell. */
u32 len;
dma_addr_t pa;
u32 rsvd1;
u32 num_wqe_allocated;
u32 num_rqe_allocated;
- u32 free_wqe_delta;
- u32 free_rqe_delta;
u32 db_sq_offset;
u32 db_rq_offset;
u32 db_shift;
u32 db_rq_offset;
u32 db_shift;
- u32 free_rqe_delta;
- u32 rsvd2;
+ u64 rsvd2;
u64 rsvd3;
} __packed;
break;
case OCRDMA_SRQ_LIMIT_EVENT:
ib_evt.element.srq = &qp->srq->ibsrq;
- ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
+ ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
srq_event = 1;
qp_event = 0;
break;
max_wqe_allocated = 1 << max_wqe_allocated;
max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
- if (qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
- qp->sq.free_delta = 0;
- qp->rq.free_delta = 1;
- } else
- qp->sq.free_delta = 1;
-
qp->sq.max_cnt = max_wqe_allocated;
qp->sq.max_wqe_idx = max_wqe_allocated - 1;
if (!attrs->srq) {
qp->rq.max_cnt = max_rqe_allocated;
qp->rq.max_wqe_idx = max_rqe_allocated - 1;
- qp->rq.free_delta = 1;
}
}
*******************************************************************/
#include <linux/module.h>
-#include <linux/version.h>
#include <linux/idr.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET;
uresp.db_shift = 16;
}
- uresp.free_wqe_delta = qp->sq.free_delta;
- uresp.free_rqe_delta = qp->rq.free_delta;
if (qp->dpp_enabled) {
uresp.dpp_credit = dpp_credit_lmt;
free_cnt = (q->max_cnt - q->head) + q->tail;
else
free_cnt = q->tail - q->head;
- if (q->free_delta)
- free_cnt -= q->free_delta;
return free_cnt;
}
(srq->pd->id * srq->dev->nic_info.db_page_size);
uresp.db_page_size = srq->dev->nic_info.db_page_size;
uresp.num_rqe_allocated = srq->rq.max_cnt;
- uresp.free_rqe_delta = 1;
if (srq->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ1_OFFSET;
uresp.db_shift = 24;
#ifndef __OCRDMA_VERBS_H__
#define __OCRDMA_VERBS_H__
-#include <linux/version.h>
int ocrdma_post_send(struct ib_qp *, struct ib_send_wr *,
struct ib_send_wr **bad_wr);
int ocrdma_post_recv(struct ib_qp *, struct ib_recv_wr *,
spin_unlock_irqrestore(&iommu->lock, flags);
}
-static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u32 head)
+static void iommu_handle_ppr_entry(struct amd_iommu *iommu, u64 *raw)
{
struct amd_iommu_fault fault;
- volatile u64 *raw;
- int i;
INC_STATS_COUNTER(pri_requests);
- raw = (u64 *)(iommu->ppr_log + head);
-
- /*
- * Hardware bug: Interrupt may arrive before the entry is written to
- * memory. If this happens we need to wait for the entry to arrive.
- */
- for (i = 0; i < LOOP_TIMEOUT; ++i) {
- if (PPR_REQ_TYPE(raw[0]) != 0)
- break;
- udelay(1);
- }
-
if (PPR_REQ_TYPE(raw[0]) != PPR_REQ_FAULT) {
pr_err_ratelimited("AMD-Vi: Unknown PPR request received\n");
return;
fault.tag = PPR_TAG(raw[0]);
fault.flags = PPR_FLAGS(raw[0]);
- /*
- * To detect the hardware bug we need to clear the entry
- * to back to zero.
- */
- raw[0] = raw[1] = 0;
-
atomic_notifier_call_chain(&ppr_notifier, 0, &fault);
}
if (iommu->ppr_log == NULL)
return;
+ /* enable ppr interrupts again */
+ writel(MMIO_STATUS_PPR_INT_MASK, iommu->mmio_base + MMIO_STATUS_OFFSET);
+
spin_lock_irqsave(&iommu->lock, flags);
head = readl(iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
tail = readl(iommu->mmio_base + MMIO_PPR_TAIL_OFFSET);
while (head != tail) {
+ volatile u64 *raw;
+ u64 entry[2];
+ int i;
- /* Handle PPR entry */
- iommu_handle_ppr_entry(iommu, head);
+ raw = (u64 *)(iommu->ppr_log + head);
+
+ /*
+ * Hardware bug: Interrupt may arrive before the entry is
+ * written to memory. If this happens we need to wait for the
+ * entry to arrive.
+ */
+ for (i = 0; i < LOOP_TIMEOUT; ++i) {
+ if (PPR_REQ_TYPE(raw[0]) != 0)
+ break;
+ udelay(1);
+ }
+
+ /* Avoid memcpy function-call overhead */
+ entry[0] = raw[0];
+ entry[1] = raw[1];
- /* Update and refresh ring-buffer state*/
+ /*
+ * To detect the hardware bug we need to clear the entry
+ * back to zero.
+ */
+ raw[0] = raw[1] = 0UL;
+
+ /* Update head pointer of hardware ring-buffer */
head = (head + PPR_ENTRY_SIZE) % PPR_LOG_SIZE;
writel(head, iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
+
+ /*
+ * Release iommu->lock because ppr-handling might need to
+ * re-aquire it
+ */
+ spin_unlock_irqrestore(&iommu->lock, flags);
+
+ /* Handle PPR entry */
+ iommu_handle_ppr_entry(iommu, entry);
+
+ spin_lock_irqsave(&iommu->lock, flags);
+
+ /* Refresh ring-buffer information */
+ head = readl(iommu->mmio_base + MMIO_PPR_HEAD_OFFSET);
tail = readl(iommu->mmio_base + MMIO_PPR_TAIL_OFFSET);
}
- /* enable ppr interrupts again */
- writel(MMIO_STATUS_PPR_INT_MASK, iommu->mmio_base + MMIO_STATUS_OFFSET);
-
spin_unlock_irqrestore(&iommu->lock, flags);
}
if (!iommu->dev)
return 1;
+ iommu->root_pdev = pci_get_bus_and_slot(iommu->dev->bus->number,
+ PCI_DEVFN(0, 0));
+
iommu->cap_ptr = h->cap_ptr;
iommu->pci_seg = h->pci_seg;
iommu->mmio_phys = h->mmio_phys;
{
int i, j;
u32 ioc_feature_control;
- struct pci_dev *pdev = NULL;
+ struct pci_dev *pdev = iommu->root_pdev;
/* RD890 BIOSes may not have completely reconfigured the iommu */
- if (!is_rd890_iommu(iommu->dev))
+ if (!is_rd890_iommu(iommu->dev) || !pdev)
return;
/*
* First, we need to ensure that the iommu is enabled. This is
* controlled by a register in the northbridge
*/
- pdev = pci_get_bus_and_slot(iommu->dev->bus->number, PCI_DEVFN(0, 0));
-
- if (!pdev)
- return;
/* Select Northbridge indirect register 0x75 and enable writing */
pci_write_config_dword(pdev, 0x60, 0x75 | (1 << 7));
if (!(ioc_feature_control & 0x1))
pci_write_config_dword(pdev, 0x64, ioc_feature_control | 1);
- pci_dev_put(pdev);
-
/* Restore the iommu BAR */
pci_write_config_dword(iommu->dev, iommu->cap_ptr + 4,
iommu->stored_addr_lo);
/* Pointer to PCI device of this IOMMU */
struct pci_dev *dev;
+ /* Cache pdev to root device for resume quirks */
+ struct pci_dev *root_pdev;
+
/* physical address of MMIO space */
u64 mmio_phys;
/* virtual address of MMIO space */
err = -EINVAL;
spin_lock_init(&conf->device_lock);
rdev_for_each(rdev, mddev) {
+ struct request_queue *q;
int disk_idx = rdev->raid_disk;
if (disk_idx >= mddev->raid_disks
|| disk_idx < 0)
if (disk->rdev)
goto abort;
disk->rdev = rdev;
+ q = bdev_get_queue(rdev->bdev);
+ if (q->merge_bvec_fn)
+ mddev->merge_check_needed = 1;
disk->head_position = 0;
}
rdev_for_each(rdev, mddev) {
long long diff;
+ struct request_queue *q;
disk_idx = rdev->raid_disk;
if (disk_idx < 0)
goto out_free_conf;
disk->rdev = rdev;
}
+ q = bdev_get_queue(rdev->bdev);
+ if (q->merge_bvec_fn)
+ mddev->merge_check_needed = 1;
diff = (rdev->new_data_offset - rdev->data_offset);
if (!mddev->reshape_backwards)
diff = -diff;
if (slave != dev->caps.function)
memset(inbox->buf, 0, 256);
if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
- *(u8 *) inbox->buf = !!reset_qkey_viols << 6;
+ *(u8 *) inbox->buf |= !!reset_qkey_viols << 6;
((__be32 *) inbox->buf)[2] = agg_cap_mask;
} else {
- ((u8 *) inbox->buf)[3] = !!reset_qkey_viols;
+ ((u8 *) inbox->buf)[3] |= !!reset_qkey_viols;
((__be32 *) inbox->buf)[1] = agg_cap_mask;
}
*
* (C) 2009 - Peter Feuerer peter (a) piie.net
* http://piie.net
- * 2009 Borislav Petkov <petkovbb@gmail.com>
+ * 2009 Borislav Petkov bp (a) alien8.de
*
* Inspired by and many thanks to:
* o acerfand - Rachel Greenham
{
struct sbp_tport *tport = agent->tport;
struct sbp_tpg *tpg = tport->tpg;
- int login_id;
+ int id;
struct sbp_login_descriptor *login;
- login_id = LOGOUT_ORB_LOGIN_ID(be32_to_cpu(req->orb.misc));
+ id = LOGOUT_ORB_LOGIN_ID(be32_to_cpu(req->orb.misc));
- login = sbp_login_find_by_id(tpg, login_id);
+ login = sbp_login_find_by_id(tpg, id);
if (!login) {
- pr_warn("cannot find login: %d\n", login_id);
+ pr_warn("cannot find login: %d\n", id);
req->status.status = cpu_to_be32(
STATUS_BLOCK_RESP(STATUS_RESP_REQUEST_COMPLETE) |
ret = PTR_ERR(dev_p);
goto fail;
}
-
- /* O_DIRECT too? */
- flags = O_RDWR | O_CREAT | O_LARGEFILE;
-
/*
- * If fd_buffered_io=1 has not been set explicitly (the default),
- * use O_SYNC to force FILEIO writes to disk.
+ * Use O_DSYNC by default instead of O_SYNC to forgo syncing
+ * of pure timestamp updates.
*/
- if (!(fd_dev->fbd_flags & FDBD_USE_BUFFERED_IO))
- flags |= O_SYNC;
+ flags = O_RDWR | O_CREAT | O_LARGEFILE | O_DSYNC;
file = filp_open(dev_p, flags, 0600);
if (IS_ERR(file)) {
}
}
-static void fd_emulate_write_fua(struct se_cmd *cmd)
-{
- struct se_device *dev = cmd->se_dev;
- struct fd_dev *fd_dev = dev->dev_ptr;
- loff_t start = cmd->t_task_lba *
- dev->se_sub_dev->se_dev_attrib.block_size;
- loff_t end = start + cmd->data_length;
- int ret;
-
- pr_debug("FILEIO: FUA WRITE LBA: %llu, bytes: %u\n",
- cmd->t_task_lba, cmd->data_length);
-
- ret = vfs_fsync_range(fd_dev->fd_file, start, end, 1);
- if (ret != 0)
- pr_err("FILEIO: vfs_fsync_range() failed: %d\n", ret);
-}
-
static int fd_execute_cmd(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents, enum dma_data_direction data_direction)
{
ret = fd_do_readv(cmd, sgl, sgl_nents);
} else {
ret = fd_do_writev(cmd, sgl, sgl_nents);
-
+ /*
+ * Perform implict vfs_fsync_range() for fd_do_writev() ops
+ * for SCSI WRITEs with Forced Unit Access (FUA) set.
+ * Allow this to happen independent of WCE=0 setting.
+ */
if (ret > 0 &&
- dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0 &&
dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0 &&
(cmd->se_cmd_flags & SCF_FUA)) {
- /*
- * We might need to be a bit smarter here
- * and return some sense data to let the initiator
- * know the FUA WRITE cache sync failed..?
- */
- fd_emulate_write_fua(cmd);
- }
+ struct fd_dev *fd_dev = dev->dev_ptr;
+ loff_t start = cmd->t_task_lba *
+ dev->se_sub_dev->se_dev_attrib.block_size;
+ loff_t end = start + cmd->data_length;
+ vfs_fsync_range(fd_dev->fd_file, start, end, 1);
+ }
}
if (ret < 0) {
static match_table_t tokens = {
{Opt_fd_dev_name, "fd_dev_name=%s"},
{Opt_fd_dev_size, "fd_dev_size=%s"},
- {Opt_fd_buffered_io, "fd_buffered_io=%d"},
{Opt_err, NULL}
};
struct fd_dev *fd_dev = se_dev->se_dev_su_ptr;
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
- int ret = 0, arg, token;
+ int ret = 0, token;
opts = kstrdup(page, GFP_KERNEL);
if (!opts)
" bytes\n", fd_dev->fd_dev_size);
fd_dev->fbd_flags |= FBDF_HAS_SIZE;
break;
- case Opt_fd_buffered_io:
- match_int(args, &arg);
- if (arg != 1) {
- pr_err("bogus fd_buffered_io=%d value\n", arg);
- ret = -EINVAL;
- goto out;
- }
-
- pr_debug("FILEIO: Using buffered I/O"
- " operations for struct fd_dev\n");
-
- fd_dev->fbd_flags |= FDBD_USE_BUFFERED_IO;
- break;
default:
break;
}
ssize_t bl = 0;
bl = sprintf(b + bl, "TCM FILEIO ID: %u", fd_dev->fd_dev_id);
- bl += sprintf(b + bl, " File: %s Size: %llu Mode: %s\n",
- fd_dev->fd_dev_name, fd_dev->fd_dev_size,
- (fd_dev->fbd_flags & FDBD_USE_BUFFERED_IO) ?
- "Buffered" : "Synchronous");
+ bl += sprintf(b + bl, " File: %s Size: %llu Mode: O_DSYNC\n",
+ fd_dev->fd_dev_name, fd_dev->fd_dev_size);
return bl;
}
#define FBDF_HAS_PATH 0x01
#define FBDF_HAS_SIZE 0x02
-#define FDBD_USE_BUFFERED_IO 0x04
struct fd_dev {
u32 fbd_flags;
unsigned global_limit)
{
unsigned long t;
- char tmp[32];
unsigned limit = (1 << 16) - 1;
int err;
- if (*ppos || count >= sizeof(tmp) - 1)
- return -EINVAL;
-
- if (copy_from_user(tmp, buf, count))
+ if (*ppos)
return -EINVAL;
- tmp[count] = '\0';
-
- err = strict_strtoul(tmp, 0, &t);
+ err = kstrtoul_from_user(buf, count, 0, &t);
if (err)
return err;
static void fuse_fillattr(struct inode *inode, struct fuse_attr *attr,
struct kstat *stat)
{
+ unsigned int blkbits;
+
stat->dev = inode->i_sb->s_dev;
stat->ino = attr->ino;
stat->mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777);
stat->ctime.tv_nsec = attr->ctimensec;
stat->size = attr->size;
stat->blocks = attr->blocks;
- stat->blksize = (1 << inode->i_blkbits);
+
+ if (attr->blksize != 0)
+ blkbits = ilog2(attr->blksize);
+ else
+ blkbits = inode->i_sb->s_blocksize_bits;
+
+ stat->blksize = 1 << blkbits;
}
static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
if (stat) {
generic_fillattr(inode, stat);
stat->mode = fi->orig_i_mode;
+ stat->ino = fi->orig_ino;
}
}
return ret;
}
+long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
+ loff_t length)
+{
+ struct fuse_file *ff = file->private_data;
+ struct fuse_conn *fc = ff->fc;
+ struct fuse_req *req;
+ struct fuse_fallocate_in inarg = {
+ .fh = ff->fh,
+ .offset = offset,
+ .length = length,
+ .mode = mode
+ };
+ int err;
+
+ if (fc->no_fallocate)
+ return -EOPNOTSUPP;
+
+ req = fuse_get_req(fc);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ req->in.h.opcode = FUSE_FALLOCATE;
+ req->in.h.nodeid = ff->nodeid;
+ req->in.numargs = 1;
+ req->in.args[0].size = sizeof(inarg);
+ req->in.args[0].value = &inarg;
+ fuse_request_send(fc, req);
+ err = req->out.h.error;
+ if (err == -ENOSYS) {
+ fc->no_fallocate = 1;
+ err = -EOPNOTSUPP;
+ }
+ fuse_put_request(fc, req);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(fuse_file_fallocate);
+
static const struct file_operations fuse_file_operations = {
.llseek = fuse_file_llseek,
.read = do_sync_read,
.unlocked_ioctl = fuse_file_ioctl,
.compat_ioctl = fuse_file_compat_ioctl,
.poll = fuse_file_poll,
+ .fallocate = fuse_file_fallocate,
};
static const struct file_operations fuse_direct_io_file_operations = {
.unlocked_ioctl = fuse_file_ioctl,
.compat_ioctl = fuse_file_compat_ioctl,
.poll = fuse_file_poll,
+ .fallocate = fuse_file_fallocate,
/* no splice_read */
};
preserve the original mode */
umode_t orig_i_mode;
+ /** 64 bit inode number */
+ u64 orig_ino;
+
/** Version of last attribute change */
u64 attr_version;
/** Are BSD file locking primitives not implemented by fs? */
unsigned no_flock:1;
+ /** Is fallocate not implemented by fs? */
+ unsigned no_fallocate:1;
+
/** The number of requests waiting for completion */
atomic_t num_waiting;
fi->nlookup = 0;
fi->attr_version = 0;
fi->writectr = 0;
+ fi->orig_ino = 0;
INIT_LIST_HEAD(&fi->write_files);
INIT_LIST_HEAD(&fi->queued_writes);
INIT_LIST_HEAD(&fi->writepages);
return 0;
}
+/*
+ * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
+ * so that it will fit.
+ */
+static ino_t fuse_squash_ino(u64 ino64)
+{
+ ino_t ino = (ino_t) ino64;
+ if (sizeof(ino_t) < sizeof(u64))
+ ino ^= ino64 >> (sizeof(u64) - sizeof(ino_t)) * 8;
+ return ino;
+}
+
void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr,
u64 attr_valid)
{
fi->attr_version = ++fc->attr_version;
fi->i_time = attr_valid;
- inode->i_ino = attr->ino;
+ inode->i_ino = fuse_squash_ino(attr->ino);
inode->i_mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777);
set_nlink(inode, attr->nlink);
inode->i_uid = attr->uid;
fi->orig_i_mode = inode->i_mode;
if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS))
inode->i_mode &= ~S_ISVTX;
+
+ fi->orig_ino = attr->ino;
}
void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
#else /* CONFIG_ACPI */
-static int register_acpi_bus_type(struct acpi_bus_type *bus) { return 0; }
-static int unregister_acpi_bus_type(struct acpi_bus_type *bus) { return 0; }
+static inline int register_acpi_bus_type(void *bus) { return 0; }
+static inline int unregister_acpi_bus_type(void *bus) { return 0; }
#endif /* CONFIG_ACPI */
* 7.18
* - add FUSE_IOCTL_DIR flag
* - add FUSE_NOTIFY_DELETE
+ *
+ * 7.19
+ * - add FUSE_FALLOCATE
*/
#ifndef _LINUX_FUSE_H
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
-#define FUSE_KERNEL_MINOR_VERSION 18
+#define FUSE_KERNEL_MINOR_VERSION 19
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
FUSE_POLL = 40,
FUSE_NOTIFY_REPLY = 41,
FUSE_BATCH_FORGET = 42,
+ FUSE_FALLOCATE = 43,
/* CUSE specific operations */
CUSE_INIT = 4096,
__u64 kh;
};
+struct fuse_fallocate_in {
+ __u64 fh;
+ __u64 offset;
+ __u64 length;
+ __u32 mode;
+ __u32 padding;
+};
+
struct fuse_in_header {
__u32 len;
__u32 opcode;
--- /dev/null
+/*
+ * i2c-mux-pinctrl platform data
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _LINUX_I2C_MUX_PINCTRL_H
+#define _LINUX_I2C_MUX_PINCTRL_H
+
+/**
+ * struct i2c_mux_pinctrl_platform_data - Platform data for i2c-mux-pinctrl
+ * @parent_bus_num: Parent I2C bus number
+ * @base_bus_num: Base I2C bus number for the child busses. 0 for dynamic.
+ * @bus_count: Number of child busses. Also the number of elements in
+ * @pinctrl_states
+ * @pinctrl_states: The names of the pinctrl state to select for each child bus
+ * @pinctrl_state_idle: The pinctrl state to select when no child bus is being
+ * accessed. If NULL, the most recently used pinctrl state will be left
+ * selected.
+ */
+struct i2c_mux_pinctrl_platform_data {
+ int parent_bus_num;
+ int base_bus_num;
+ int bus_count;
+ const char **pinctrl_states;
+ const char *pinctrl_state_idle;
+};
+
+#endif
.normal_prio = MAX_PRIO-20, \
.policy = SCHED_NORMAL, \
.cpus_allowed = CPU_MASK_ALL, \
+ .nr_cpus_allowed= NR_CPUS, \
.mm = NULL, \
.active_mm = &init_mm, \
.se = { \
.rt = { \
.run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
.time_slice = RR_TIMESLICE, \
- .nr_cpus_allowed = NR_CPUS, \
}, \
.tasks = LIST_HEAD_INIT(tsk.tasks), \
INIT_PUSHABLE_TASKS(tsk) \
* The ops can have NULL set or get functions.
*/
#define module_param_cb(name, ops, arg, perm) \
- __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, 0)
+ __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, -1)
/**
* <level>_param_cb - general callback for a module/cmdline parameter
{ (void *)set, (void *)get }; \
__module_param_call(MODULE_PARAM_PREFIX, \
name, &__param_ops_##name, arg, \
- (perm) + sizeof(__check_old_set_param(set))*0, 0)
+ (perm) + sizeof(__check_old_set_param(set))*0, -1)
/* We don't get oldget: it's often a new-style param_get_uint, etc. */
static inline int
*/
#define core_param(name, var, type, perm) \
param_check_##type(name, &(var)); \
- __module_param_call("", name, ¶m_ops_##type, &var, perm, 0)
+ __module_param_call("", name, ¶m_ops_##type, &var, perm, -1)
#endif /* !MODULE */
/**
= { len, string }; \
__module_param_call(MODULE_PARAM_PREFIX, name, \
¶m_ops_string, \
- .str = &__param_string_##name, perm, 0); \
+ .str = &__param_string_##name, perm, -1); \
__MODULE_PARM_TYPE(name, "string")
/**
__module_param_call(MODULE_PARAM_PREFIX, name, \
¶m_array_ops, \
.arr = &__param_arr_##name, \
- perm, 0); \
+ perm, -1); \
__MODULE_PARM_TYPE(name, "array of " #type)
extern struct kernel_param_ops param_array_ops;
#define PR_SET_PTRACER 0x59616d61
# define PR_SET_PTRACER_ANY ((unsigned long)-1)
-#define PR_SET_CHILD_SUBREAPER 36
-#define PR_GET_CHILD_SUBREAPER 37
+#define PR_SET_CHILD_SUBREAPER 36
+#define PR_GET_CHILD_SUBREAPER 37
/*
* If no_new_privs is set, then operations that grant new privileges (i.e.
* asking selinux for a specific new context (e.g. with runcon) will result
* in execve returning -EPERM.
*/
-#define PR_SET_NO_NEW_PRIVS 38
-#define PR_GET_NO_NEW_PRIVS 39
+#define PR_SET_NO_NEW_PRIVS 38
+#define PR_GET_NO_NEW_PRIVS 39
+
+#define PR_GET_TID_ADDRESS 40
#endif /* _LINUX_PRCTL_H */
iter->index++;
if (likely(*slot))
return slot;
- if (flags & RADIX_TREE_ITER_CONTIG)
+ if (flags & RADIX_TREE_ITER_CONTIG) {
+ /* forbid switching to the next chunk */
+ iter->next_index = 0;
break;
+ }
}
}
return NULL;
extern void calc_global_load(unsigned long ticks);
+extern void update_cpu_load_nohz(void);
extern unsigned long get_parent_ip(unsigned long addr);
/* leave room for more dump flags */
#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
+#define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */
#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
struct list_head run_list;
unsigned long timeout;
unsigned int time_slice;
- int nr_cpus_allowed;
struct sched_rt_entity *back;
#ifdef CONFIG_RT_GROUP_SCHED
#endif
unsigned int policy;
+ int nr_cpus_allowed;
cpumask_t cpus_allowed;
#ifdef CONFIG_PREEMPT_RCU
parse_early_param();
parse_args("Booting kernel", static_command_line, __start___param,
__stop___param - __start___param,
- 0, 0, &unknown_bootoption);
+ -1, -1, &unknown_bootoption);
jump_label_init();
{
int level;
- for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++) {
- pr_info("initlevel:%d=%s, %d registered initcalls\n",
- level, initcall_level_names[level],
- (int) (initcall_levels[level+1]
- - initcall_levels[level]));
+ for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++)
do_initcall_level(level);
- }
}
/*
return sfd->file->f_op->fsync(sfd->file, start, end, datasync);
}
+static long shm_fallocate(struct file *file, int mode, loff_t offset,
+ loff_t len)
+{
+ struct shm_file_data *sfd = shm_file_data(file);
+
+ if (!sfd->file->f_op->fallocate)
+ return -EOPNOTSUPP;
+ return sfd->file->f_op->fallocate(file, mode, offset, len);
+}
+
static unsigned long shm_get_unmapped_area(struct file *file,
unsigned long addr, unsigned long len, unsigned long pgoff,
unsigned long flags)
.get_unmapped_area = shm_get_unmapped_area,
#endif
.llseek = noop_llseek,
+ .fallocate = shm_fallocate,
};
static const struct file_operations shm_file_operations_huge = {
.release = shm_release,
.get_unmapped_area = shm_get_unmapped_area,
.llseek = noop_llseek,
+ .fallocate = shm_fallocate,
};
int is_file_shm_hugepages(struct file *file)
mutex_unlock(&cgroup_mutex);
/*
- * Drop the active superblock reference that we took when we
- * created the cgroup
+ * We want to drop the active superblock reference from the
+ * cgroup creation after all the dentry refs are gone -
+ * kill_sb gets mighty unhappy otherwise. Mark
+ * dentry->d_fsdata with cgroup_diput() to tell
+ * cgroup_d_release() to call deactivate_super().
*/
- deactivate_super(cgrp->root->sb);
+ dentry->d_fsdata = cgroup_diput;
/*
* if we're getting rid of the cgroup, refcount should ensure
return 1;
}
+static void cgroup_d_release(struct dentry *dentry)
+{
+ /* did cgroup_diput() tell me to deactivate super? */
+ if (dentry->d_fsdata == cgroup_diput)
+ deactivate_super(dentry->d_sb);
+}
+
static void remove_dir(struct dentry *d)
{
struct dentry *parent = dget(d->d_parent);
static const struct dentry_operations cgroup_dops = {
.d_iput = cgroup_diput,
.d_delete = cgroup_delete,
+ .d_release = cgroup_d_release,
};
struct inode *inode =
#define SCHED_FEAT(name, enabled) \
#name ,
-static __read_mostly char *sched_feat_names[] = {
+static const char * const sched_feat_names[] = {
#include "features.h"
- NULL
};
#undef SCHED_FEAT
sched_avg_update(this_rq);
}
+#ifdef CONFIG_NO_HZ
+/*
+ * There is no sane way to deal with nohz on smp when using jiffies because the
+ * cpu doing the jiffies update might drift wrt the cpu doing the jiffy reading
+ * causing off-by-one errors in observed deltas; {0,2} instead of {1,1}.
+ *
+ * Therefore we cannot use the delta approach from the regular tick since that
+ * would seriously skew the load calculation. However we'll make do for those
+ * updates happening while idle (nohz_idle_balance) or coming out of idle
+ * (tick_nohz_idle_exit).
+ *
+ * This means we might still be one tick off for nohz periods.
+ */
+
/*
* Called from nohz_idle_balance() to update the load ratings before doing the
* idle balance.
*/
void update_idle_cpu_load(struct rq *this_rq)
{
- unsigned long curr_jiffies = jiffies;
+ unsigned long curr_jiffies = ACCESS_ONCE(jiffies);
unsigned long load = this_rq->load.weight;
unsigned long pending_updates;
/*
- * Bloody broken means of dealing with nohz, but better than nothing..
- * jiffies is updated by one cpu, another cpu can drift wrt the jiffy
- * update and see 0 difference the one time and 2 the next, even though
- * we ticked at roughtly the same rate.
- *
- * Hence we only use this from nohz_idle_balance() and skip this
- * nonsense when called from the scheduler_tick() since that's
- * guaranteed a stable rate.
+ * bail if there's load or we're actually up-to-date.
*/
if (load || curr_jiffies == this_rq->last_load_update_tick)
return;
__update_cpu_load(this_rq, load, pending_updates);
}
+/*
+ * Called from tick_nohz_idle_exit() -- try and fix up the ticks we missed.
+ */
+void update_cpu_load_nohz(void)
+{
+ struct rq *this_rq = this_rq();
+ unsigned long curr_jiffies = ACCESS_ONCE(jiffies);
+ unsigned long pending_updates;
+
+ if (curr_jiffies == this_rq->last_load_update_tick)
+ return;
+
+ raw_spin_lock(&this_rq->lock);
+ pending_updates = curr_jiffies - this_rq->last_load_update_tick;
+ if (pending_updates) {
+ this_rq->last_load_update_tick = curr_jiffies;
+ /*
+ * We were idle, this means load 0, the current load might be
+ * !0 due to remote wakeups and the sort.
+ */
+ __update_cpu_load(this_rq, 0, pending_updates);
+ }
+ raw_spin_unlock(&this_rq->lock);
+}
+#endif /* CONFIG_NO_HZ */
+
/*
* Called from scheduler_tick()
*/
static void update_cpu_load_active(struct rq *this_rq)
{
/*
- * See the mess in update_idle_cpu_load().
+ * See the mess around update_idle_cpu_load() / update_cpu_load_nohz().
*/
this_rq->last_load_update_tick = jiffies;
__update_cpu_load(this_rq, this_rq->load.weight, 1);
p->sched_class->set_cpus_allowed(p, new_mask);
cpumask_copy(&p->cpus_allowed, new_mask);
- p->rt.nr_cpus_allowed = cpumask_weight(new_mask);
+ p->nr_cpus_allowed = cpumask_weight(new_mask);
}
/*
cpumask_or(covered, covered, sg_span);
- sg->sgp = *per_cpu_ptr(sdd->sgp, cpumask_first(sg_span));
+ sg->sgp = *per_cpu_ptr(sdd->sgp, i);
atomic_inc(&sg->sgp->ref);
- if (cpumask_test_cpu(cpu, sg_span))
+ if ((!groups && cpumask_test_cpu(cpu, sg_span)) ||
+ cpumask_first(sg_span) == cpu) {
+ WARN_ON_ONCE(!cpumask_test_cpu(cpu, sg_span));
groups = sg;
+ }
if (!first)
first = sg;
return;
for (j = 0; j < nr_node_ids; j++) {
- struct cpumask *mask = kzalloc_node(cpumask_size(), GFP_KERNEL, j);
+ struct cpumask *mask = kzalloc(cpumask_size(), GFP_KERNEL);
if (!mask)
return;
if (!doms_cur)
doms_cur = &fallback_doms;
cpumask_andnot(doms_cur[0], cpu_map, cpu_isolated_map);
- dattr_cur = NULL;
err = build_sched_domains(doms_cur[0], NULL);
register_sched_domain_sysctl();
int want_sd = 1;
int sync = wake_flags & WF_SYNC;
- if (p->rt.nr_cpus_allowed == 1)
+ if (p->nr_cpus_allowed == 1)
return prev_cpu;
if (sd_flag & SD_BALANCE_WAKE) {
unsigned long scale_rt_power(int cpu)
{
struct rq *rq = cpu_rq(cpu);
- u64 total, available;
+ u64 total, available, age_stamp, avg;
- total = sched_avg_period() + (rq->clock - rq->age_stamp);
+ /*
+ * Since we're reading these variables without serialization make sure
+ * we read them once before doing sanity checks on them.
+ */
+ age_stamp = ACCESS_ONCE(rq->age_stamp);
+ avg = ACCESS_ONCE(rq->rt_avg);
+
+ total = sched_avg_period() + (rq->clock - age_stamp);
- if (unlikely(total < rq->rt_avg)) {
+ if (unlikely(total < avg)) {
/* Ensures that power won't end up being negative */
available = 0;
} else {
- available = total - rq->rt_avg;
+ available = total - avg;
}
if (unlikely((s64)total < SCHED_POWER_SCALE))
power = 0;
- group = child->groups;
- do {
- power += group->sgp->power;
- group = group->next;
- } while (group != child->groups);
+ if (child->flags & SD_OVERLAP) {
+ /*
+ * SD_OVERLAP domains cannot assume that child groups
+ * span the current group.
+ */
+
+ for_each_cpu(cpu, sched_group_cpus(sdg))
+ power += power_of(cpu);
+ } else {
+ /*
+ * !SD_OVERLAP domains can assume that child groups
+ * span the current group.
+ */
+
+ group = child->groups;
+ do {
+ power += group->sgp->power;
+ group = group->next;
+ } while (group != child->groups);
+ }
sdg->sgp->power = power;
}
static void inc_rt_migration(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
{
+ struct task_struct *p;
+
if (!rt_entity_is_task(rt_se))
return;
+ p = rt_task_of(rt_se);
rt_rq = &rq_of_rt_rq(rt_rq)->rt;
rt_rq->rt_nr_total++;
- if (rt_se->nr_cpus_allowed > 1)
+ if (p->nr_cpus_allowed > 1)
rt_rq->rt_nr_migratory++;
update_rt_migration(rt_rq);
static void dec_rt_migration(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
{
+ struct task_struct *p;
+
if (!rt_entity_is_task(rt_se))
return;
+ p = rt_task_of(rt_se);
rt_rq = &rq_of_rt_rq(rt_rq)->rt;
rt_rq->rt_nr_total--;
- if (rt_se->nr_cpus_allowed > 1)
+ if (p->nr_cpus_allowed > 1)
rt_rq->rt_nr_migratory--;
update_rt_migration(rt_rq);
enqueue_rt_entity(rt_se, flags & ENQUEUE_HEAD);
- if (!task_current(rq, p) && p->rt.nr_cpus_allowed > 1)
+ if (!task_current(rq, p) && p->nr_cpus_allowed > 1)
enqueue_pushable_task(rq, p);
inc_nr_running(rq);
cpu = task_cpu(p);
- if (p->rt.nr_cpus_allowed == 1)
+ if (p->nr_cpus_allowed == 1)
goto out;
/* For anything but wake ups, just return the task_cpu */
* will have to sort it out.
*/
if (curr && unlikely(rt_task(curr)) &&
- (curr->rt.nr_cpus_allowed < 2 ||
+ (curr->nr_cpus_allowed < 2 ||
curr->prio <= p->prio) &&
- (p->rt.nr_cpus_allowed > 1)) {
+ (p->nr_cpus_allowed > 1)) {
int target = find_lowest_rq(p);
if (target != -1)
static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p)
{
- if (rq->curr->rt.nr_cpus_allowed == 1)
+ if (rq->curr->nr_cpus_allowed == 1)
return;
- if (p->rt.nr_cpus_allowed != 1
+ if (p->nr_cpus_allowed != 1
&& cpupri_find(&rq->rd->cpupri, p, NULL))
return;
* The previous task needs to be made eligible for pushing
* if it is still active
*/
- if (on_rt_rq(&p->rt) && p->rt.nr_cpus_allowed > 1)
+ if (on_rt_rq(&p->rt) && p->nr_cpus_allowed > 1)
enqueue_pushable_task(rq, p);
}
{
if (!task_running(rq, p) &&
(cpu < 0 || cpumask_test_cpu(cpu, tsk_cpus_allowed(p))) &&
- (p->rt.nr_cpus_allowed > 1))
+ (p->nr_cpus_allowed > 1))
return 1;
return 0;
}
if (unlikely(!lowest_mask))
return -1;
- if (task->rt.nr_cpus_allowed == 1)
+ if (task->nr_cpus_allowed == 1)
return -1; /* No other targets possible */
if (!cpupri_find(&task_rq(task)->rd->cpupri, task, lowest_mask))
BUG_ON(rq->cpu != task_cpu(p));
BUG_ON(task_current(rq, p));
- BUG_ON(p->rt.nr_cpus_allowed <= 1);
+ BUG_ON(p->nr_cpus_allowed <= 1);
BUG_ON(!p->on_rq);
BUG_ON(!rt_task(p));
if (!task_running(rq, p) &&
!test_tsk_need_resched(rq->curr) &&
has_pushable_tasks(rq) &&
- p->rt.nr_cpus_allowed > 1 &&
+ p->nr_cpus_allowed > 1 &&
rt_task(rq->curr) &&
- (rq->curr->rt.nr_cpus_allowed < 2 ||
+ (rq->curr->nr_cpus_allowed < 2 ||
rq->curr->prio <= p->prio))
push_rt_tasks(rq);
}
* Only update if the process changes its state from whether it
* can migrate or not.
*/
- if ((p->rt.nr_cpus_allowed > 1) == (weight > 1))
+ if ((p->nr_cpus_allowed > 1) == (weight > 1))
return;
rq = task_rq(p);
static void task_tick_rt(struct rq *rq, struct task_struct *p, int queued)
{
+ struct sched_rt_entity *rt_se = &p->rt;
+
update_curr_rt(rq);
watchdog(rq, p);
p->rt.time_slice = RR_TIMESLICE;
/*
- * Requeue to the end of queue if we are not the only element
- * on the queue:
+ * Requeue to the end of queue if we (and all of our ancestors) are the
+ * only element on the queue
*/
- if (p->rt.run_list.prev != p->rt.run_list.next) {
- requeue_task_rt(rq, p, 0);
- set_tsk_need_resched(p);
+ for_each_sched_rt_entity(rt_se) {
+ if (rt_se->run_list.prev != rt_se->run_list.next) {
+ requeue_task_rt(rq, p, 0);
+ set_tsk_need_resched(p);
+ return;
+ }
}
}
}
#ifdef CONFIG_CHECKPOINT_RESTORE
-static bool vma_flags_mismatch(struct vm_area_struct *vma,
- unsigned long required,
- unsigned long banned)
-{
- return (vma->vm_flags & required) != required ||
- (vma->vm_flags & banned);
-}
-
static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
{
+ struct vm_area_struct *vma;
struct file *exe_file;
struct dentry *dentry;
int err;
- /*
- * Setting new mm::exe_file is only allowed when no VM_EXECUTABLE vma's
- * remain. So perform a quick test first.
- */
- if (mm->num_exe_file_vmas)
- return -EBUSY;
-
exe_file = fget(fd);
if (!exe_file)
return -EBADF;
if (err)
goto exit;
+ down_write(&mm->mmap_sem);
+
+ /*
+ * Forbid mm->exe_file change if there are mapped other files.
+ */
+ err = -EBUSY;
+ for (vma = mm->mmap; vma; vma = vma->vm_next) {
+ if (vma->vm_file && !path_equal(&vma->vm_file->f_path,
+ &exe_file->f_path))
+ goto exit_unlock;
+ }
+
/*
* The symlink can be changed only once, just to disallow arbitrary
* transitions malicious software might bring in. This means one
* could make a snapshot over all processes running and monitor
* /proc/pid/exe changes to notice unusual activity if needed.
*/
- down_write(&mm->mmap_sem);
- if (likely(!mm->exe_file))
- set_mm_exe_file(mm, exe_file);
- else
- err = -EBUSY;
+ err = -EPERM;
+ if (test_and_set_bit(MMF_EXE_FILE_CHANGED, &mm->flags))
+ goto exit_unlock;
+
+ set_mm_exe_file(mm, exe_file);
+exit_unlock:
up_write(&mm->mmap_sem);
exit:
if (opt == PR_SET_MM_EXE_FILE)
return prctl_set_mm_exe_file(mm, (unsigned int)addr);
- if (addr >= TASK_SIZE)
+ if (addr >= TASK_SIZE || addr < mmap_min_addr)
return -EINVAL;
error = -EINVAL;
error = -EFAULT;
goto out;
}
-#ifdef CONFIG_STACK_GROWSUP
- if (vma_flags_mismatch(vma, VM_READ | VM_WRITE | VM_GROWSUP, 0))
-#else
- if (vma_flags_mismatch(vma, VM_READ | VM_WRITE | VM_GROWSDOWN, 0))
-#endif
- goto out;
if (opt == PR_SET_MM_START_STACK)
mm->start_stack = addr;
else if (opt == PR_SET_MM_ARG_START)
up_read(&mm->mmap_sem);
return error;
}
+
+static int prctl_get_tid_address(struct task_struct *me, int __user **tid_addr)
+{
+ return put_user(me->clear_child_tid, tid_addr);
+}
+
#else /* CONFIG_CHECKPOINT_RESTORE */
static int prctl_set_mm(int opt, unsigned long addr,
unsigned long arg4, unsigned long arg5)
{
return -EINVAL;
}
+static int prctl_get_tid_address(struct task_struct *me, int __user **tid_addr)
+{
+ return -EINVAL;
+}
#endif
SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
else
return -EINVAL;
break;
+ case PR_GET_TID_ADDRESS:
+ error = prctl_get_tid_address(me, (int __user **)arg2);
+ break;
default:
return -EINVAL;
}
/* Update jiffies first */
select_nohz_load_balancer(0);
tick_do_update_jiffies64(now);
+ update_cpu_load_nohz();
#ifndef CONFIG_VIRT_CPU_ACCOUNTING
/*
timekeeper.xtime.tv_sec++;
leap = second_overflow(timekeeper.xtime.tv_sec);
timekeeper.xtime.tv_sec += leap;
+ timekeeper.wall_to_monotonic.tv_sec -= leap;
}
/* Accumulate raw time */
timekeeper.xtime.tv_sec++;
leap = second_overflow(timekeeper.xtime.tv_sec);
timekeeper.xtime.tv_sec += leap;
+ timekeeper.wall_to_monotonic.tv_sec -= leap;
}
timekeeping_update(false);
if (head->height == 0)
return NULL;
-retry:
longcpy(key, __key, geo->keylen);
+retry:
dec_key(geo, key);
node = head->node;
}
miss:
if (retry_key) {
- __key = retry_key;
+ longcpy(key, retry_key, geo->keylen);
retry_key = NULL;
goto retry;
}
int btree_insert(struct btree_head *head, struct btree_geo *geo,
unsigned long *key, void *val, gfp_t gfp)
{
+ BUG_ON(!val);
return btree_insert_level(head, geo, key, val, 1, gfp);
}
EXPORT_SYMBOL_GPL(btree_insert);
* during iterating; it can be zero only at the beginning.
* And we cannot overflow iter->next_index in a single step,
* because RADIX_TREE_MAP_SHIFT < BITS_PER_LONG.
+ *
+ * This condition also used by radix_tree_next_slot() to stop
+ * contiguous iterating, and forbid swithing to the next chunk.
*/
index = iter->next_index;
if (!index && iter->index)
#include <linux/raid/pq.h>
/* Recover two failed data blocks. */
-void raid6_2data_recov_intx1(int disks, size_t bytes, int faila, int failb,
- void **ptrs)
+static void raid6_2data_recov_intx1(int disks, size_t bytes, int faila,
+ int failb, void **ptrs)
{
u8 *p, *q, *dp, *dq;
u8 px, qx, db;
}
/* Recover failure of one data block plus the P block */
-void raid6_datap_recov_intx1(int disks, size_t bytes, int faila, void **ptrs)
+static void raid6_datap_recov_intx1(int disks, size_t bytes, int faila,
+ void **ptrs)
{
u8 *p, *q, *dq;
const u8 *qmul; /* Q multiplier table */
boot_cpu_has(X86_FEATURE_SSSE3);
}
-void raid6_2data_recov_ssse3(int disks, size_t bytes, int faila, int failb,
- void **ptrs)
+static void raid6_2data_recov_ssse3(int disks, size_t bytes, int faila,
+ int failb, void **ptrs)
{
u8 *p, *q, *dp, *dq;
const u8 *pbmul; /* P multiplier table for B data */
}
-void raid6_datap_recov_ssse3(int disks, size_t bytes, int faila, void **ptrs)
+static void raid6_datap_recov_ssse3(int disks, size_t bytes, int faila,
+ void **ptrs)
{
u8 *p, *q, *dq;
const u8 *qmul; /* Q multiplier table */
mutex_lock(&shmem_swaplist_mutex);
/*
* We needed to drop mutex to make that restrictive page
- * allocation; but the inode might already be freed by now,
- * and we cannot refer to inode or mapping or info to check.
- * However, we do hold page lock on the PageSwapCache page,
- * so can check if that still has our reference remaining.
+ * allocation, but the inode might have been freed while we
+ * dropped it: although a racing shmem_evict_inode() cannot
+ * complete without emptying the radix_tree, our page lock
+ * on this swapcache page is not enough to prevent that -
+ * free_swap_and_cache() of our swap entry will only
+ * trylock_page(), removing swap from radix_tree whatever.
+ *
+ * We must not proceed to shmem_add_to_page_cache() if the
+ * inode has been freed, but of course we cannot rely on
+ * inode or mapping or info to check that. However, we can
+ * safely check if our swap entry is still in use (and here
+ * it can't have got reused for another page): if it's still
+ * in use, then the inode cannot have been freed yet, and we
+ * can safely proceed (if it's no longer in use, that tells
+ * nothing about the inode, but we don't need to unuse swap).
*/
if (!page_swapcount(*pagep))
error = -ENOENT;
/*
* There's a faint possibility that swap page was replaced before
- * caller locked it: it will come back later with the right page.
+ * caller locked it: caller will come back later with the right page.
*/
- if (unlikely(!PageSwapCache(page)))
+ if (unlikely(!PageSwapCache(page) || page_private(page) != swap.val))
goto out;
/*
newpage = shmem_alloc_page(gfp, info, index);
if (!newpage)
return -ENOMEM;
- VM_BUG_ON(shmem_should_replace_page(newpage, gfp));
- *pagep = newpage;
page_cache_get(newpage);
copy_highpage(newpage, oldpage);
+ flush_dcache_page(newpage);
- VM_BUG_ON(!PageLocked(oldpage));
__set_page_locked(newpage);
- VM_BUG_ON(!PageUptodate(oldpage));
SetPageUptodate(newpage);
- VM_BUG_ON(!PageSwapBacked(oldpage));
SetPageSwapBacked(newpage);
- VM_BUG_ON(!swap_index);
set_page_private(newpage, swap_index);
- VM_BUG_ON(!PageSwapCache(oldpage));
SetPageSwapCache(newpage);
/*
spin_lock_irq(&swap_mapping->tree_lock);
error = shmem_radix_tree_replace(swap_mapping, swap_index, oldpage,
newpage);
- __inc_zone_page_state(newpage, NR_FILE_PAGES);
- __dec_zone_page_state(oldpage, NR_FILE_PAGES);
+ if (!error) {
+ __inc_zone_page_state(newpage, NR_FILE_PAGES);
+ __dec_zone_page_state(oldpage, NR_FILE_PAGES);
+ }
spin_unlock_irq(&swap_mapping->tree_lock);
- BUG_ON(error);
- mem_cgroup_replace_page_cache(oldpage, newpage);
- lru_cache_add_anon(newpage);
+ if (unlikely(error)) {
+ /*
+ * Is this possible? I think not, now that our callers check
+ * both PageSwapCache and page_private after getting page lock;
+ * but be defensive. Reverse old to newpage for clear and free.
+ */
+ oldpage = newpage;
+ } else {
+ mem_cgroup_replace_page_cache(oldpage, newpage);
+ lru_cache_add_anon(newpage);
+ *pagep = newpage;
+ }
ClearPageSwapCache(oldpage);
set_page_private(oldpage, 0);
unlock_page(oldpage);
page_cache_release(oldpage);
page_cache_release(oldpage);
- return 0;
+ return error;
}
/*
/* We have to do this with page locked to prevent races */
lock_page(page);
- if (!PageSwapCache(page) || page->mapping) {
+ if (!PageSwapCache(page) || page_private(page) != swap.val ||
+ page->mapping) {
error = -EEXIST; /* try again */
goto failed;
}
char *progname;
int num_cpus;
-cpu_set_t *cpu_mask;
-size_t cpu_mask_size;
+cpu_set_t *cpu_present_set, *cpu_mask;
+size_t cpu_present_setsize, cpu_mask_size;
struct counters {
unsigned long long tsc; /* per thread */
struct timeval tv_odd;
struct timeval tv_delta;
+int mark_cpu_present(int pkg, int core, int cpu)
+{
+ CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
+ return 0;
+}
+
/*
* cpu_mask_init(ncpus)
*
}
cpu_mask_size = CPU_ALLOC_SIZE(ncpus);
CPU_ZERO_S(cpu_mask_size, cpu_mask);
+
+ /*
+ * Allocate and initialize cpu_present_set
+ */
+ cpu_present_set = CPU_ALLOC(ncpus);
+ if (cpu_present_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_present_setsize = CPU_ALLOC_SIZE(ncpus);
+ CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
+ for_all_cpus(mark_cpu_present);
}
void cpu_mask_uninit()
CPU_FREE(cpu_mask);
cpu_mask = NULL;
cpu_mask_size = 0;
+ CPU_FREE(cpu_present_set);
+ cpu_present_set = NULL;
+ cpu_present_setsize = 0;
}
int cpu_migrate(int cpu)
switch (model) {
case 0x2A:
case 0x2D:
+ case 0x3A: /* IVB */
+ case 0x3D: /* IVB Xeon */
return 1;
}
return 0;
int retval;
pid_t child_pid;
get_counters(cnt_even);
+
+ /* clear affinity side-effect of get_counters() */
+ sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
gettimeofday(&tv_even, (struct timezone *)NULL);
child_pid = fork();
*/
hlist_for_each_entry(ei, n, &rt->map[ue->gsi], link)
if (ei->type == KVM_IRQ_ROUTING_MSI ||
+ ue->type == KVM_IRQ_ROUTING_MSI ||
ue->u.irqchip.irqchip == ei->irqchip.irqchip)
return r;
projects / cascardo / linux.git / commitdiff