Merge tag 'xtensa-next-20160320' of git://github.com/czankel/xtensa-linux

[cascardo/linux.git] / arch / xtensa / Kconfig

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 7e9464b..e832d3e 100644 (file)
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -17,6 +17,7 @@ config XTENSA
        select HAVE_DMA_API_DEBUG
        select HAVE_FUNCTION_TRACER
        select HAVE_FUTEX_CMPXCHG if !MMU
+       select HAVE_HW_BREAKPOINT if PERF_EVENTS
        select HAVE_IRQ_TIME_ACCOUNTING
        select HAVE_OPROFILE
        select HAVE_PERF_EVENTS
@@ -138,6 +139,22 @@ config XTENSA_VARIANT_HAVE_PERF_EVENTS
 
          If unsure, say N.
 
+config XTENSA_FAKE_NMI
+       bool "Treat PMM IRQ as NMI"
+       depends on XTENSA_VARIANT_HAVE_PERF_EVENTS
+       default n
+       help
+         If PMM IRQ is the only IRQ at EXCM level it is safe to
+         treat it as NMI, which improves accuracy of profiling.
+
+         If there are other interrupts at or above PMM IRQ priority level
+         but not above the EXCM level, PMM IRQ still may be treated as NMI,
+         but only if these IRQs are not used. There will be a build warning
+         saying that this is not safe, and a bugcheck if one of these IRQs
+         actually fire.
+
+         If unsure, say N.
+
 config XTENSA_UNALIGNED_USER
        bool "Unaligned memory access in use space"
        help