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Diffstat (limited to 'kernel/events/core.c')
-rw-r--r--kernel/events/core.c68
1 files changed, 47 insertions, 21 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 79dae188a987..09ae27b353c1 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5617,16 +5617,26 @@ void perf_output_sample(struct perf_output_handle *handle,
}
if (sample_type & PERF_SAMPLE_RAW) {
- if (data->raw) {
- u32 raw_size = data->raw->size;
- u32 real_size = round_up(raw_size + sizeof(u32),
- sizeof(u64)) - sizeof(u32);
- u64 zero = 0;
-
- perf_output_put(handle, real_size);
- __output_copy(handle, data->raw->data, raw_size);
- if (real_size - raw_size)
- __output_copy(handle, &zero, real_size - raw_size);
+ struct perf_raw_record *raw = data->raw;
+
+ if (raw) {
+ struct perf_raw_frag *frag = &raw->frag;
+
+ perf_output_put(handle, raw->size);
+ do {
+ if (frag->copy) {
+ __output_custom(handle, frag->copy,
+ frag->data, frag->size);
+ } else {
+ __output_copy(handle, frag->data,
+ frag->size);
+ }
+ if (perf_raw_frag_last(frag))
+ break;
+ frag = frag->next;
+ } while (1);
+ if (frag->pad)
+ __output_skip(handle, NULL, frag->pad);
} else {
struct {
u32 size;
@@ -5751,14 +5761,28 @@ void perf_prepare_sample(struct perf_event_header *header,
}
if (sample_type & PERF_SAMPLE_RAW) {
- int size = sizeof(u32);
-
- if (data->raw)
- size += data->raw->size;
- else
- size += sizeof(u32);
+ struct perf_raw_record *raw = data->raw;
+ int size;
+
+ if (raw) {
+ struct perf_raw_frag *frag = &raw->frag;
+ u32 sum = 0;
+
+ do {
+ sum += frag->size;
+ if (perf_raw_frag_last(frag))
+ break;
+ frag = frag->next;
+ } while (1);
+
+ size = round_up(sum + sizeof(u32), sizeof(u64));
+ raw->size = size - sizeof(u32);
+ frag->pad = raw->size - sum;
+ } else {
+ size = sizeof(u64);
+ }
- header->size += round_up(size, sizeof(u64));
+ header->size += size;
}
if (sample_type & PERF_SAMPLE_BRANCH_STACK) {
@@ -7398,7 +7422,7 @@ static struct pmu perf_swevent = {
static int perf_tp_filter_match(struct perf_event *event,
struct perf_sample_data *data)
{
- void *record = data->raw->data;
+ void *record = data->raw->frag.data;
/* only top level events have filters set */
if (event->parent)
@@ -7454,8 +7478,10 @@ void perf_tp_event(u16 event_type, u64 count, void *record, int entry_size,
struct perf_event *event;
struct perf_raw_record raw = {
- .size = entry_size,
- .data = record,
+ .frag = {
+ .size = entry_size,
+ .data = record,
+ },
};
perf_sample_data_init(&data, 0, 0);
@@ -7596,7 +7622,7 @@ static void perf_event_free_bpf_prog(struct perf_event *event)
prog = event->tp_event->prog;
if (prog) {
event->tp_event->prog = NULL;
- bpf_prog_put_rcu(prog);
+ bpf_prog_put(prog);
}
}