diff options
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 34 | ||||
| -rw-r--r-- | kernel/events/internal.h | 3 |
2 files changed, 37 insertions, 0 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 6d9fdaef7b57..dbc2eff32230 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5916,6 +5916,40 @@ void perf_event_mmap(struct vm_area_struct *vma) perf_event_mmap_event(&mmap_event); } +void perf_event_aux_event(struct perf_event *event, unsigned long head, + unsigned long size, u64 flags) +{ + struct perf_output_handle handle; + struct perf_sample_data sample; + struct perf_aux_event { + struct perf_event_header header; + u64 offset; + u64 size; + u64 flags; + } rec = { + .header = { + .type = PERF_RECORD_AUX, + .misc = 0, + .size = sizeof(rec), + }, + .offset = head, + .size = size, + .flags = flags, + }; + int ret; + + perf_event_header__init_id(&rec.header, &sample, event); + ret = perf_output_begin(&handle, event, rec.header.size); + + if (ret) + return; + + perf_output_put(&handle, rec); + perf_event__output_id_sample(event, &handle, &sample); + + perf_output_end(&handle); +} + /* * IRQ throttle logging */ diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 0f6d08015927..4d117a981431 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -62,6 +62,9 @@ static inline bool rb_has_aux(struct ring_buffer *rb) return !!rb->aux_nr_pages; } +void perf_event_aux_event(struct perf_event *event, unsigned long head, + unsigned long size, u64 flags); + extern void perf_event_header__init_id(struct perf_event_header *header, struct perf_sample_data *data, |