diff options
| -rw-r--r-- | kernel/events/core.c | 79 |
1 files changed, 39 insertions, 40 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index eba8fb5834ae..708ab70ca442 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4680,12 +4680,10 @@ perf_event_read_event(struct perf_event *event, perf_output_end(&handle); } -typedef int (perf_event_aux_match_cb)(struct perf_event *event, void *data); 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_match_cb match, perf_event_aux_output_cb output, void *data) { @@ -4696,15 +4694,12 @@ perf_event_aux_ctx(struct perf_event_context *ctx, continue; if (!event_filter_match(event)) continue; - if (match(event, data)) - output(event, data); + output(event, data); } } static void -perf_event_aux(perf_event_aux_match_cb match, - perf_event_aux_output_cb output, - void *data, +perf_event_aux(perf_event_aux_output_cb output, void *data, struct perf_event_context *task_ctx) { struct perf_cpu_context *cpuctx; @@ -4717,7 +4712,7 @@ perf_event_aux(perf_event_aux_match_cb match, cpuctx = get_cpu_ptr(pmu->pmu_cpu_context); if (cpuctx->unique_pmu != pmu) goto next; - perf_event_aux_ctx(&cpuctx->ctx, match, output, data); + perf_event_aux_ctx(&cpuctx->ctx, output, data); if (task_ctx) goto next; ctxn = pmu->task_ctx_nr; @@ -4725,14 +4720,14 @@ perf_event_aux(perf_event_aux_match_cb match, goto next; ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); if (ctx) - perf_event_aux_ctx(ctx, match, output, data); + perf_event_aux_ctx(ctx, output, data); next: put_cpu_ptr(pmu->pmu_cpu_context); } if (task_ctx) { preempt_disable(); - perf_event_aux_ctx(task_ctx, match, output, data); + perf_event_aux_ctx(task_ctx, output, data); preempt_enable(); } rcu_read_unlock(); @@ -4759,6 +4754,12 @@ struct perf_task_event { } event_id; }; +static int perf_event_task_match(struct perf_event *event) +{ + return event->attr.comm || event->attr.mmap || + event->attr.mmap_data || event->attr.task; +} + static void perf_event_task_output(struct perf_event *event, void *data) { @@ -4768,6 +4769,9 @@ static void perf_event_task_output(struct perf_event *event, struct task_struct *task = task_event->task; int ret, size = task_event->event_id.header.size; + if (!perf_event_task_match(event)) + return; + perf_event_header__init_id(&task_event->event_id.header, &sample, event); ret = perf_output_begin(&handle, event, @@ -4790,13 +4794,6 @@ out: task_event->event_id.header.size = size; } -static int perf_event_task_match(struct perf_event *event, - void *data __maybe_unused) -{ - return event->attr.comm || event->attr.mmap || - event->attr.mmap_data || event->attr.task; -} - static void perf_event_task(struct task_struct *task, struct perf_event_context *task_ctx, int new) @@ -4825,8 +4822,7 @@ static void perf_event_task(struct task_struct *task, }, }; - perf_event_aux(perf_event_task_match, - perf_event_task_output, + perf_event_aux(perf_event_task_output, &task_event, task_ctx); } @@ -4853,6 +4849,11 @@ struct perf_comm_event { } event_id; }; +static int perf_event_comm_match(struct perf_event *event) +{ + return event->attr.comm; +} + static void perf_event_comm_output(struct perf_event *event, void *data) { @@ -4862,6 +4863,9 @@ static void perf_event_comm_output(struct perf_event *event, int size = comm_event->event_id.header.size; int ret; + if (!perf_event_comm_match(event)) + return; + perf_event_header__init_id(&comm_event->event_id.header, &sample, event); ret = perf_output_begin(&handle, event, comm_event->event_id.header.size); @@ -4883,12 +4887,6 @@ out: comm_event->event_id.header.size = size; } -static int perf_event_comm_match(struct perf_event *event, - void *data __maybe_unused) -{ - return event->attr.comm; -} - static void perf_event_comm_event(struct perf_comm_event *comm_event) { char comm[TASK_COMM_LEN]; @@ -4903,8 +4901,7 @@ static void perf_event_comm_event(struct perf_comm_event *comm_event) comm_event->event_id.header.size = sizeof(comm_event->event_id) + size; - perf_event_aux(perf_event_comm_match, - perf_event_comm_output, + perf_event_aux(perf_event_comm_output, comm_event, NULL); } @@ -4967,6 +4964,17 @@ struct perf_mmap_event { } event_id; }; +static int perf_event_mmap_match(struct perf_event *event, + void *data) +{ + struct perf_mmap_event *mmap_event = data; + struct vm_area_struct *vma = mmap_event->vma; + int executable = vma->vm_flags & VM_EXEC; + + return (!executable && event->attr.mmap_data) || + (executable && event->attr.mmap); +} + static void perf_event_mmap_output(struct perf_event *event, void *data) { @@ -4976,6 +4984,9 @@ static void perf_event_mmap_output(struct perf_event *event, int size = mmap_event->event_id.header.size; int ret; + if (!perf_event_mmap_match(event, data)) + return; + perf_event_header__init_id(&mmap_event->event_id.header, &sample, event); ret = perf_output_begin(&handle, event, mmap_event->event_id.header.size); @@ -4996,17 +5007,6 @@ out: mmap_event->event_id.header.size = size; } -static int perf_event_mmap_match(struct perf_event *event, - void *data) -{ - struct perf_mmap_event *mmap_event = data; - struct vm_area_struct *vma = mmap_event->vma; - int executable = vma->vm_flags & VM_EXEC; - - return (!executable && event->attr.mmap_data) || - (executable && event->attr.mmap); -} - static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) { struct vm_area_struct *vma = mmap_event->vma; @@ -5070,8 +5070,7 @@ got_name: mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size; - perf_event_aux(perf_event_mmap_match, - perf_event_mmap_output, + perf_event_aux(perf_event_mmap_output, mmap_event, NULL); |