diff options
| author | Mark Brown <broonie@kernel.org> | 2014-10-09 18:02:47 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-10-09 18:02:47 +0100 |
| commit | 2606d2448703e8995ca39a59d8a1106a1e0f034a (patch) | |
| tree | 588f1b850a7e13d0e2f3461d66909db55c7531fb /arch/arm/kernel/perf_event.c | |
| parent | 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 (diff) | |
| parent | b8a669d29702a8fb529f4fae450a86b8676b0e42 (diff) | |
Merge tag 'kvm-for-lsk-v3.10-v1' of git://git.linaro.org/people/christoffer.dall/linux-kvm-arm into lsk-v3.10-kvmv3.10/topic/kvm
KVM/ARM/arm64 Support for LSK v3.10
Diffstat (limited to 'arch/arm/kernel/perf_event.c')
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 8c3094d0f7b7..e19edc6f2d15 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -53,7 +53,12 @@ armpmu_map_cache_event(const unsigned (*cache_map) static int armpmu_map_hw_event(const unsigned (*event_map)[PERF_COUNT_HW_MAX], u64 config) { - int mapping = (*event_map)[config]; + int mapping; + + if (config >= PERF_COUNT_HW_MAX) + return -ENOENT; + + mapping = (*event_map)[config]; return mapping == HW_OP_UNSUPPORTED ? -ENOENT : mapping; } @@ -253,6 +258,9 @@ validate_event(struct pmu_hw_events *hw_events, struct arm_pmu *armpmu = to_arm_pmu(event->pmu); struct pmu *leader_pmu = event->group_leader->pmu; + if (is_software_event(event)) + return 1; + if (event->pmu != leader_pmu || event->state < PERF_EVENT_STATE_OFF) return 1; @@ -569,6 +577,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs) return; } + perf_callchain_store(entry, regs->ARM_pc); tail = (struct frame_tail __user *)regs->ARM_fp - 1; while ((entry->nr < PERF_MAX_STACK_DEPTH) && |