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Commit ceed97ab authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: perf: Enable generic software events 



Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent 3a51d50f

arch/arc/kernel/unaligned.c

+2 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
 */



#include <linux/types.h>

#include <linux/perf_event.h>

#include <linux/ptrace.h>

#include <linux/uaccess.h>

#include <asm/disasm.h>
@@ -253,6 +254,7 @@ int misaligned_fixup(unsigned long address, struct pt_regs *regs, 
		}

	}



	perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, address);

	return 0;



fault:

arch/arc/mm/fault.c

+10 −2
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/ptrace.h>

#include <linux/uaccess.h>

#include <linux/kdebug.h>

#include <linux/perf_event.h>

#include <asm/pgalloc.h>

#include <asm/mmu.h>
@@ -139,13 +140,20 @@ void do_page_fault(unsigned long address, struct pt_regs *regs) 
			return;

	}



	perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);



	if (likely(!(fault & VM_FAULT_ERROR))) {

		if (flags & FAULT_FLAG_ALLOW_RETRY) {

			/* To avoid updating stats twice for retry case */

			if (fault & VM_FAULT_MAJOR)

			if (fault & VM_FAULT_MAJOR) {

				tsk->maj_flt++;

			else

				perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,

					      regs, address);

			} else {

				tsk->min_flt++;

				perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,

					      regs, address);

			}



			if (fault & VM_FAULT_RETRY) {

				flags &= ~FAULT_FLAG_ALLOW_RETRY;