From 7f788d2d53085815d474559cd51ef1f38b0a9bb8 Mon Sep 17 00:00:00 2001 From: Deng-Cheng Zhu Date: Tue, 12 Oct 2010 19:37:21 +0800 Subject: MIPS: add support for software performance events Software events are required as part of the measurable stuff by the Linux performance counter subsystem. Here is the list of events added by this patch: PERF_COUNT_SW_PAGE_FAULTS PERF_COUNT_SW_PAGE_FAULTS_MIN PERF_COUNT_SW_PAGE_FAULTS_MAJ PERF_COUNT_SW_ALIGNMENT_FAULTS PERF_COUNT_SW_EMULATION_FAULTS Signed-off-by: Deng-Cheng Zhu To: linux-mips@linux-mips.org Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: mingo@elte.hu Cc: acme@redhat.com Cc: jamie.iles@picochip.com Acked-by: David Daney Reviewed-by: Matt Fleming Patchwork: https://patchwork.linux-mips.org/patch/1686/ Signed-off-by: Ralf Baechle --- arch/mips/mm/fault.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'arch/mips/mm') diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c index 783ad0065fd..137ee76a004 100644 --- a/arch/mips/mm/fault.c +++ b/arch/mips/mm/fault.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -144,6 +145,7 @@ good_area: * the fault. */ fault = handle_mm_fault(mm, vma, address, write ? FAULT_FLAG_WRITE : 0); + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, 0, regs, address); if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) goto out_of_memory; @@ -151,10 +153,15 @@ good_area: goto do_sigbus; BUG(); } - if (fault & VM_FAULT_MAJOR) + if (fault & VM_FAULT_MAJOR) { + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, + 1, 0, regs, address); tsk->maj_flt++; - else + } else { + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, + 1, 0, regs, address); tsk->min_flt++; + } up_read(&mm->mmap_sem); return; -- cgit v1.2.3-18-g5258