diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/perf_counter.c | 55 |
1 files changed, 29 insertions, 26 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index adb6ae506d5..1a933a221ea 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -3171,20 +3171,15 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer) } static void perf_swcounter_overflow(struct perf_counter *counter, - int nmi, struct pt_regs *regs, u64 addr) + int nmi, struct perf_sample_data *data) { - struct perf_sample_data data = { - .regs = regs, - .addr = addr, - .period = counter->hw.last_period, - }; + data->period = counter->hw.last_period; perf_swcounter_update(counter); perf_swcounter_set_period(counter); - if (perf_counter_overflow(counter, nmi, &data)) + if (perf_counter_overflow(counter, nmi, data)) /* soft-disable the counter */ ; - } static int perf_swcounter_is_counting(struct perf_counter *counter) @@ -3249,18 +3244,18 @@ static int perf_swcounter_match(struct perf_counter *counter, } static void perf_swcounter_add(struct perf_counter *counter, u64 nr, - int nmi, struct pt_regs *regs, u64 addr) + int nmi, struct perf_sample_data *data) { int neg = atomic64_add_negative(nr, &counter->hw.count); - if (counter->hw.sample_period && !neg && regs) - perf_swcounter_overflow(counter, nmi, regs, addr); + if (counter->hw.sample_period && !neg && data->regs) + perf_swcounter_overflow(counter, nmi, data); } static void perf_swcounter_ctx_event(struct perf_counter_context *ctx, - enum perf_type_id type, u32 event, - u64 nr, int nmi, struct pt_regs *regs, - u64 addr) + enum perf_type_id type, + u32 event, u64 nr, int nmi, + struct perf_sample_data *data) { struct perf_counter *counter; @@ -3269,8 +3264,8 @@ static void perf_swcounter_ctx_event(struct perf_counter_context *ctx, rcu_read_lock(); list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) { - if (perf_swcounter_match(counter, type, event, regs)) - perf_swcounter_add(counter, nr, nmi, regs, addr); + if (perf_swcounter_match(counter, type, event, data->regs)) + perf_swcounter_add(counter, nr, nmi, data); } rcu_read_unlock(); } @@ -3289,9 +3284,9 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx) return &cpuctx->recursion[0]; } -static void __perf_swcounter_event(enum perf_type_id type, u32 event, - u64 nr, int nmi, struct pt_regs *regs, - u64 addr) +static void do_perf_swcounter_event(enum perf_type_id type, u32 event, + u64 nr, int nmi, + struct perf_sample_data *data) { struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context); int *recursion = perf_swcounter_recursion_context(cpuctx); @@ -3304,7 +3299,7 @@ static void __perf_swcounter_event(enum perf_type_id type, u32 event, barrier(); perf_swcounter_ctx_event(&cpuctx->ctx, type, event, - nr, nmi, regs, addr); + nr, nmi, data); rcu_read_lock(); /* * doesn't really matter which of the child contexts the @@ -3312,7 +3307,7 @@ static void __perf_swcounter_event(enum perf_type_id type, u32 event, */ ctx = rcu_dereference(current->perf_counter_ctxp); if (ctx) - perf_swcounter_ctx_event(ctx, type, event, nr, nmi, regs, addr); + perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data); rcu_read_unlock(); barrier(); @@ -3325,7 +3320,12 @@ out: void perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr) { - __perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, regs, addr); + struct perf_sample_data data = { + .regs = regs, + .addr = addr, + }; + + do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi, &data); } static void perf_swcounter_read(struct perf_counter *counter) @@ -3469,12 +3469,15 @@ static const struct pmu perf_ops_task_clock = { #ifdef CONFIG_EVENT_PROFILE void perf_tpcounter_event(int event_id) { - struct pt_regs *regs = get_irq_regs(); + struct perf_sample_data data = { + .regs = get_irq_regs(); + .addr = 0, + }; - if (!regs) - regs = task_pt_regs(current); + if (!data.regs) + data.regs = task_pt_regs(current); - __perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, 1, 1, regs, 0); + do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, 1, 1, &data); } EXPORT_SYMBOL_GPL(perf_tpcounter_event); |