diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-12-06 14:07:15 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-12-06 20:41:06 +0100 |
| commit | c1d6f42f1a42c721513e2f388c208e5348004f64 (patch) | |
| tree | c30bac2feecd91ceb012eb5523568360f40ce9a3 /arch/x86/kernel/cpu/perf_event.h | |
| parent | ffb871bc9156ee2e5cf442f61250c5bd6aad17e3 (diff) | |
perf, x86: Implement arch event mask as quirk
Implement the disabling of arch events as a quirk so that we can print
a message along with it. This creates some visibility into the problem
space and could allow us to work on adding more work-around like the
AAJ80 one.
Requested-by: Ingo Molnar <mingo@elte.hu>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-wcja2z48wklzu1b0nkz0a5y7@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event.h')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index f49c5c21085..8944062f46e 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -261,6 +261,11 @@ union perf_capabilities { u64 capabilities; }; +struct x86_pmu_quirk { + struct x86_pmu_quirk *next; + void (*func)(void); +}; + /* * struct x86_pmu - generic x86 pmu */ @@ -299,7 +304,7 @@ struct x86_pmu { void (*put_event_constraints)(struct cpu_hw_events *cpuc, struct perf_event *event); struct event_constraint *event_constraints; - void (*quirks)(void); + struct x86_pmu_quirk *quirks; int perfctr_second_write; int (*cpu_prepare)(int cpu); @@ -340,6 +345,15 @@ struct x86_pmu { struct perf_guest_switch_msr *(*guest_get_msrs)(int *nr); }; +#define x86_add_quirk(func_) \ +do { \ + static struct x86_pmu_quirk __quirk __initdata = { \ + .func = func_, \ + }; \ + __quirk.next = x86_pmu.quirks; \ + x86_pmu.quirks = &__quirk; \ +} while (0) + #define ERF_NO_HT_SHARING 1 #define ERF_HAS_RSP_1 2 |