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author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2016-04-27 17:44:45 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2016-05-05 10:13:57 +0200 |
commit | b73e4fefc18adbe4d12ffb746fb16306674c1ac6 (patch) | |
tree | f7ad47e88d249fe5fc140294e3261be76a081288 /kernel | |
parent | perf/x86/intel/pt: Add IP filtering register/CPUID bits (diff) | |
download | linux-b73e4fefc18adbe4d12ffb746fb16306674c1ac6.tar.xz linux-b73e4fefc18adbe4d12ffb746fb16306674c1ac6.zip |
perf/core: Extend perf_event_aux_ctx() to optionally iterate through more events
Trace filtering code needs an iterator that can go through all events in
a context, including inactive and filtered, to be able to update their
filters' address ranges based on mmap or exec events.
This patch changes perf_event_aux_ctx() to optionally do this.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/1461771888-10409-5-git-send-email-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/events/core.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 13956ee883fd..2bb7c47f18e3 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5781,15 +5781,18 @@ typedef void (perf_event_aux_output_cb)(struct perf_event *event, void *data); static void perf_event_aux_ctx(struct perf_event_context *ctx, perf_event_aux_output_cb output, - void *data) + void *data, bool all) { struct perf_event *event; list_for_each_entry_rcu(event, &ctx->event_list, event_entry) { - if (event->state < PERF_EVENT_STATE_INACTIVE) - continue; - if (!event_filter_match(event)) - continue; + if (!all) { + if (event->state < PERF_EVENT_STATE_INACTIVE) + continue; + if (!event_filter_match(event)) + continue; + } + output(event, data); } } @@ -5800,7 +5803,7 @@ perf_event_aux_task_ctx(perf_event_aux_output_cb output, void *data, { rcu_read_lock(); preempt_disable(); - perf_event_aux_ctx(task_ctx, output, data); + perf_event_aux_ctx(task_ctx, output, data, false); preempt_enable(); rcu_read_unlock(); } @@ -5830,13 +5833,13 @@ perf_event_aux(perf_event_aux_output_cb output, void *data, cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); if (cpuctx->unique_pmu != pmu) goto next; - perf_event_aux_ctx(&cpuctx->ctx, output, data); + perf_event_aux_ctx(&cpuctx->ctx, output, data, false); ctxn = pmu->task_ctx_nr; if (ctxn < 0) goto next; ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); if (ctx) - perf_event_aux_ctx(ctx, output, data); + perf_event_aux_ctx(ctx, output, data, false); next: put_cpu_ptr(pmu->pmu_cpu_context); } @@ -5878,10 +5881,10 @@ static int __perf_pmu_output_stop(void *info) }; rcu_read_lock(); - perf_event_aux_ctx(&cpuctx->ctx, __perf_event_output_stop, &ro); + perf_event_aux_ctx(&cpuctx->ctx, __perf_event_output_stop, &ro, false); if (cpuctx->task_ctx) perf_event_aux_ctx(cpuctx->task_ctx, __perf_event_output_stop, - &ro); + &ro, false); rcu_read_unlock(); return ro.err; |