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Date: Mon, 6 Jul 2015 16:32:47 +0300 From: Max Filippov <jcmvbkbc@...il.com> To: linux-xtensa@...ux-xtensa.org, linux-kernel@...r.kernel.org Cc: Chris Zankel <chris@...kel.net>, Marc Gauthier <marc@...ence.com>, Max Filippov <jcmvbkbc@...il.com> Subject: [PATCH 6/8] xtensa: count software page fault perf events Signed-off-by: Max Filippov <jcmvbkbc@...il.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@...r.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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