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authorDeng-Cheng Zhu <dengcheng.zhu@gmail.com>2010-10-12 19:37:21 +0800
committerRalf Baechle <ralf@linux-mips.org>2010-10-29 19:08:48 +0100
commit7f788d2d53085815d474559cd51ef1f38b0a9bb8 (patch)
tree32c2b6af15da818a02502a678225ff4de754b542 /arch/mips/math-emu
parent6dbd972850c092e50e10bd14a3324e2abe88997a (diff)
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 <dengcheng.zhu@gmail.com> 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 <ddaney@caviumnetworks.com> Reviewed-by: Matt Fleming <matt@console-pimps.org> Patchwork: https://patchwork.linux-mips.org/patch/1686/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu')
-rw-r--r--arch/mips/math-emu/cp1emu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c
index ec3faa413f3..b2ad1b0910f 100644
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -36,6 +36,7 @@
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/debugfs.h>
+#include <linux/perf_event.h>
#include <asm/inst.h>
#include <asm/bootinfo.h>
@@ -258,6 +259,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx)
}
emul:
+ perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS,
+ 1, 0, xcp, 0);
MIPS_FPU_EMU_INC_STATS(emulated);
switch (MIPSInst_OPCODE(ir)) {
case ldc1_op:{