aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/include/asm/perf_event.h
diff options
context:
space:
mode:
authorMarc Zyngier <Marc.Zyngier@arm.com>2012-09-13 16:40:46 +0100
committerWill Deacon <will.deacon@arm.com>2012-11-09 11:37:24 +0000
commite50c54189f7c6211a99539156e3978474f0b1a0b (patch)
treef2875cfc036a202270427471dd53e16f0ae48381 /arch/arm/include/asm/perf_event.h
parent3d70f8c617a436c7146ecb81df2265b4626dfe89 (diff)
downloadlinux-linaro-stable-e50c54189f7c6211a99539156e3978474f0b1a0b.tar.gz
ARM: perf: add guest vs host discrimination
Add minimal guest support to perf, so it can distinguish whether the PMU interrupt was in the host or the guest, as well as collecting some very basic information (guest PC, user vs kernel mode). This is not feature complete though, as it doesn't support backtracing in the guest. Based on the x86 implementation, tested with KVM/ARM. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/include/asm/perf_event.h')
-rw-r--r--arch/arm/include/asm/perf_event.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h
index 625cd621a436..00416edecead 100644
--- a/arch/arm/include/asm/perf_event.h
+++ b/arch/arm/include/asm/perf_event.h
@@ -21,4 +21,9 @@
#define C(_x) PERF_COUNT_HW_CACHE_##_x
#define CACHE_OP_UNSUPPORTED 0xFFFF
+struct pt_regs;
+extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
+extern unsigned long perf_misc_flags(struct pt_regs *regs);
+#define perf_misc_flags(regs) perf_misc_flags(regs)
+
#endif /* __ARM_PERF_EVENT_H__ */