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| author | Stephane Eranian <eranian@google.com> | 2015-12-03 21:03:10 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-01-06 11:15:34 +0100 |
| commit | 673d188ba5b1cef6f9a41a5a18b490b2831c3ea5 (patch) | |
| tree | 2520f5c66655e61d25bbc01e73e1e9881e2b3795 /arch/x86/kernel/cpu/perf_event_intel.c | |
| parent | 1424a09a9e1839285e948d4ea9fdfca26c9a2086 (diff) | |
| download | linux-673d188ba5b1cef6f9a41a5a18b490b2831c3ea5.tar.gz linux-673d188ba5b1cef6f9a41a5a18b490b2831c3ea5.tar.bz2 linux-673d188ba5b1cef6f9a41a5a18b490b2831c3ea5.zip | |
perf/x86: Enable cycles:pp for Intel Atom
This patch updates the PEBS support for Intel Atom to provide
an alias for the cycles:pp event used by perf record/top by default
nowadays.
On Atom, only INST_RETIRED:ANY supports PEBS, so we use this event
instead with a large cmask to count cycles. Given that Core2 has
the same issue, we use the intel_pebs_aliases_core2() function for Atom
as well.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: kan.liang@intel.com
Link: http://lkml.kernel.org/r/1449172990-30183-3-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_intel.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 762c6023a97f..95980c0b9561 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -3370,6 +3370,7 @@ __init int intel_pmu_init(void) x86_pmu.event_constraints = intel_gen_event_constraints; x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints; + x86_pmu.pebs_aliases = intel_pebs_aliases_core2; pr_cont("Atom events, "); break; |