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| Started by | Max Filippov <jcmvbkbc@gmail.com> |
|---|---|
| First post | 2015-07-18 10:40 +0200 |
| Last post | 2015-07-18 10:40 +0200 |
| Articles | 1 — 1 participant |
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[PATCH v2 06/13] xtensa: count software page fault perf events Max Filippov <jcmvbkbc@gmail.com> - 2015-07-18 10:40 +0200
| From | Max Filippov <jcmvbkbc@gmail.com> |
|---|---|
| Date | 2015-07-18 10:40 +0200 |
| Subject | [PATCH v2 06/13] xtensa: count software page fault perf events |
| Message-ID | <pNvP4-7hz-17@gated-at.bofh.it> |
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> --- arch/xtensa/mm/fault.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c index 9e3571a..76360a2 100644 --- a/arch/xtensa/mm/fault.c +++ b/arch/xtensa/mm/fault.c @@ -15,6 +15,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/hardirq.h> +#include <linux/perf_event.h> #include <asm/mmu_context.h> #include <asm/cacheflush.h> #include <asm/hardirq.h> @@ -142,6 +143,12 @@ good_area: } up_read(&mm->mmap_sem); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); + if (flags & VM_FAULT_MAJOR) + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address); + else if (flags & VM_FAULT_MINOR) + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address); + return; /* Something tried to access memory that isn't in our memory map.. -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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