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author | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-10 23:02:51 -0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-10-10 23:02:51 -0400 |
commit | 3873691e5ab34fa26948643d038a2b98c4437298 (patch) | |
tree | 5327469194c2167830bce38b56a618b754cdbeea /arch/x86/events/intel/ds.c | |
parent | fs: Replace current_fs_time() with current_time() (diff) | |
parent | vfs: add note about i_op->rename changes to porting (diff) | |
download | linux-dev-3873691e5ab34fa26948643d038a2b98c4437298.tar.xz linux-dev-3873691e5ab34fa26948643d038a2b98c4437298.zip |
Merge remote-tracking branch 'ovl/rename2' into for-linus
Diffstat (limited to 'arch/x86/events/intel/ds.c')
-rw-r--r-- | arch/x86/events/intel/ds.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index 7ce9f3f669e6..9b983a474253 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1274,18 +1274,18 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs) struct pebs_record_nhm *p = at; u64 pebs_status; - /* PEBS v3 has accurate status bits */ + pebs_status = p->status & cpuc->pebs_enabled; + pebs_status &= (1ULL << x86_pmu.max_pebs_events) - 1; + + /* PEBS v3 has more accurate status bits */ if (x86_pmu.intel_cap.pebs_format >= 3) { - for_each_set_bit(bit, (unsigned long *)&p->status, - MAX_PEBS_EVENTS) + for_each_set_bit(bit, (unsigned long *)&pebs_status, + x86_pmu.max_pebs_events) counts[bit]++; continue; } - pebs_status = p->status & cpuc->pebs_enabled; - pebs_status &= (1ULL << x86_pmu.max_pebs_events) - 1; - /* * On some CPUs the PEBS status can be zero when PEBS is * racing with clearing of GLOBAL_STATUS. @@ -1333,8 +1333,11 @@ static void intel_pmu_drain_pebs_nhm(struct pt_regs *iregs) continue; event = cpuc->events[bit]; - WARN_ON_ONCE(!event); - WARN_ON_ONCE(!event->attr.precise_ip); + if (WARN_ON_ONCE(!event)) + continue; + + if (WARN_ON_ONCE(!event->attr.precise_ip)) + continue; /* log dropped samples number */ if (error[bit]) |