From: Ingo Molnar Date: Tue, 23 Dec 2008 11:17:29 +0000 (+0100) Subject: perfcounters: add PERF_COUNT_BUS_CYCLES X-Git-Tag: v2.6.31-rc1~383^2~539 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f650a672359819454c3d8d4135ecd1558cde0b24;p=karo-tx-linux.git perfcounters: add PERF_COUNT_BUS_CYCLES Generalize "bus cycles" hw events - and map them to CPU_CLK_Unhalted.Ref on x86. (which is a good enough approximation) Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c index f3359c2b3910..86b2fdd344a6 100644 --- a/arch/x86/kernel/cpu/perf_counter.c +++ b/arch/x86/kernel/cpu/perf_counter.c @@ -41,12 +41,13 @@ static DEFINE_PER_CPU(struct cpu_hw_counters, cpu_hw_counters); static const int intel_perfmon_event_map[] = { - [PERF_COUNT_CYCLES] = 0x003c, + [PERF_COUNT_CPU_CYCLES] = 0x003c, [PERF_COUNT_INSTRUCTIONS] = 0x00c0, [PERF_COUNT_CACHE_REFERENCES] = 0x4f2e, [PERF_COUNT_CACHE_MISSES] = 0x412e, [PERF_COUNT_BRANCH_INSTRUCTIONS] = 0x00c4, [PERF_COUNT_BRANCH_MISSES] = 0x00c5, + [PERF_COUNT_BUS_CYCLES] = 0x013c, }; static const int max_intel_perfmon_events = ARRAY_SIZE(intel_perfmon_event_map); diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 1ea08e9f31ce..ec77d1643d37 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -36,14 +36,15 @@ enum hw_event_types { /* * Common hardware events, generalized by the kernel: */ - PERF_COUNT_CYCLES = 0, + PERF_COUNT_CPU_CYCLES = 0, PERF_COUNT_INSTRUCTIONS = 1, PERF_COUNT_CACHE_REFERENCES = 2, PERF_COUNT_CACHE_MISSES = 3, PERF_COUNT_BRANCH_INSTRUCTIONS = 4, PERF_COUNT_BRANCH_MISSES = 5, + PERF_COUNT_BUS_CYCLES = 6, - PERF_HW_EVENTS_MAX = 6, + PERF_HW_EVENTS_MAX = 7, /* * Special "software" counters provided by the kernel, even if