diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2016-11-18 13:53:54 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-11-22 12:36:59 +0100 |
| commit | 033ac60c7f21f9996a0fab2fd04f334afbf77b33 (patch) | |
| tree | 3c43c0f1b40804fbd5e5a755c8dd19e32c5ad697 /arch | |
| parent | perf/x86/intel: Cure bogus unwind from PEBS entries (diff) | |
| download | linux-033ac60c7f21f9996a0fab2fd04f334afbf77b33.tar.xz linux-033ac60c7f21f9996a0fab2fd04f334afbf77b33.zip | |
perf/x86/intel/uncore: Allow only a single PMU/box within an events group
Group validation expects all events to be of the same PMU; however
is_uncore_pmu() is too wide, it matches _all_ uncore events, even
across PMUs.
This triggers failure when we group different events from different
uncore PMUs, like:
perf stat -vv -e '{uncore_cbox_0/config=0x0334/,uncore_qpi_0/event=1/}' -a sleep 1
Fix is_uncore_pmu() by only matching events to the box at hand.
Note that generic code; ran after this step; will disallow this
mixture of PMU events.
Reported-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vince@deater.net>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/20161118125354.GQ3117@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/events/intel/uncore.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index efca2685d876..dbaaf7dc8373 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -319,9 +319,9 @@ static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, */ static int uncore_pmu_event_init(struct perf_event *event); -static bool is_uncore_event(struct perf_event *event) +static bool is_box_event(struct intel_uncore_box *box, struct perf_event *event) { - return event->pmu->event_init == uncore_pmu_event_init; + return &box->pmu->pmu == event->pmu; } static int @@ -340,7 +340,7 @@ uncore_collect_events(struct intel_uncore_box *box, struct perf_event *leader, n = box->n_events; - if (is_uncore_event(leader)) { + if (is_box_event(box, leader)) { box->event_list[n] = leader; n++; } @@ -349,7 +349,7 @@ uncore_collect_events(struct intel_uncore_box *box, struct perf_event *leader, return n; list_for_each_entry(event, &leader->sibling_list, group_entry) { - if (!is_uncore_event(event) || + if (!is_box_event(box, event) || event->state <= PERF_EVENT_STATE_OFF) continue; |