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perf: Convert perf header build_ids into build_id events

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Bypasses the build_id perf header code and replaces it with a
synthesized event and processing function that accomplishes the
same thing, used when reading/writing perf data to/from a pipe.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: k-keiichi@bx.jp.nec.com
Cc: acme@ghostprotocols.net
LKML-Reference: <1270184365-8281-9-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tom Zanussi
2010-04-01 23:59:22 -05:00
committed by Ingo Molnar
parent 9215545e99
commit c7929e4727
8 changed files with 121 additions and 4 deletions
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6
tools/perf/util/session.c
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@@ -206,6 +206,8 @@ static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
handler->event_type = process_event_stub;
if (handler->tracing_data == NULL)
handler->tracing_data = process_event_stub;
if (handler->build_id == NULL)
handler->build_id = process_event_stub;
}
static const char *event__name[] = {
@@ -222,6 +224,7 @@ static const char *event__name[] = {
[PERF_RECORD_HEADER_ATTR] = "ATTR",
[PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE",
[PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA",
[PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID",
};
unsigned long event__total[PERF_RECORD_HEADER_MAX];
@@ -332,6 +335,7 @@ static event__swap_op event__swap_ops[] = {
[PERF_RECORD_HEADER_ATTR] = event__attr_swap,
[PERF_RECORD_HEADER_EVENT_TYPE] = event__event_type_swap,
[PERF_RECORD_HEADER_TRACING_DATA] = event__tracing_data_swap,
[PERF_RECORD_HEADER_BUILD_ID] = NULL,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@@ -380,6 +384,8 @@ static int perf_session__process_event(struct perf_session *self,
/* setup for reading amidst mmap */
lseek(self->fd, offset + head, SEEK_SET);
return ops->tracing_data(event, self);
case PERF_RECORD_HEADER_BUILD_ID:
return ops->build_id(event, self);
default:
self->unknown_events++;
return -1;