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Subject[PATCH 6/8] perf/core: Do not pass header for sample id init
Date
The only thing it does for header in __perf_event_header__init_id() is
to update the header size with event->id_header_size. We can do this
outside and get rid of the argument for the later change.

Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
kernel/events/core.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1384137a90f7..9cc55122188f 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7061,14 +7061,12 @@ static void perf_aux_sample_output(struct perf_event *event,
PERF_SAMPLE_ID | PERF_SAMPLE_STREAM_ID | \
PERF_SAMPLE_CPU | PERF_SAMPLE_IDENTIFIER)

-static void __perf_event_header__init_id(struct perf_event_header *header,
- struct perf_sample_data *data,
+static void __perf_event_header__init_id(struct perf_sample_data *data,
struct perf_event *event,
u64 sample_type)
{
data->type = event->attr.sample_type;
data->sample_flags |= data->type & PERF_SAMPLE_ID_ALL;
- header->size += event->id_header_size;

if (sample_type & PERF_SAMPLE_TID) {
/* namespace issues */
@@ -7095,8 +7093,10 @@ void perf_event_header__init_id(struct perf_event_header *header,
struct perf_sample_data *data,
struct perf_event *event)
{
- if (event->attr.sample_id_all)
- __perf_event_header__init_id(header, data, event, event->attr.sample_type);
+ if (event->attr.sample_id_all) {
+ header->size += event->id_header_size;
+ __perf_event_header__init_id(data, event, event->attr.sample_type);
+ }
}

static void __perf_event__output_id_sample(struct perf_output_handle *handle,
@@ -7584,7 +7584,7 @@ void perf_prepare_sample(struct perf_event_header *header,
u64 filtered_sample_type;

header->type = PERF_RECORD_SAMPLE;
- header->size = sizeof(*header) + event->header_size;
+ header->size = sizeof(*header) + event->header_size + event->id_header_size;

header->misc = 0;
header->misc |= perf_misc_flags(regs);
@@ -7602,7 +7602,7 @@ void perf_prepare_sample(struct perf_event_header *header,
PERF_SAMPLE_REGS_USER);
filtered_sample_type &= ~data->sample_flags;

- __perf_event_header__init_id(header, data, event, filtered_sample_type);
+ __perf_event_header__init_id(data, event, filtered_sample_type);

if (filtered_sample_type & PERF_SAMPLE_IP) {
data->ip = perf_instruction_pointer(regs);
--
2.39.0.314.g84b9a713c41-goog
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