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perf: Convert perf event types into event type events

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Bypasses the event type 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: <1270184365-8281-7-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tom Zanussi
2010-04-01 23:59:20 -05:00
committed by Ingo Molnar
parent 2c46dbb517
commit cd19a035f3
8 changed files with 101 additions and 8 deletions
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62
tools/perf/util/header.c
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@ -99,13 +99,6 @@ int perf_header__add_attr(struct perf_header *self,
return 0;
}
#define MAX_EVENT_NAME 64
struct perf_trace_event_type {
u64 event_id;
char name[MAX_EVENT_NAME];
};
static int event_count;
static struct perf_trace_event_type *events;
@ -886,3 +879,58 @@ int event__process_attr(event_t *self, struct perf_session *session)
return 0;
}
int event__synthesize_event_type(u64 event_id, char *name,
event__handler_t process,
struct perf_session *session)
{
event_t ev;
size_t size = 0;
int err = 0;
memset(&ev, 0, sizeof(ev));
ev.event_type.event_type.event_id = event_id;
memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME);
strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
size = strlen(name);
size = ALIGN(size, sizeof(u64));
ev.event_type.header.size = sizeof(ev.event_type) -
(sizeof(ev.event_type.event_type.name) - size);
err = process(&ev, session);
return err;
}
int event__synthesize_event_types(event__handler_t process,
struct perf_session *session)
{
struct perf_trace_event_type *type;
int i, err = 0;
for (i = 0; i < event_count; i++) {
type = &events[i];
err = event__synthesize_event_type(type->event_id, type->name,
process, session);
if (err) {
pr_debug("failed to create perf header event type\n");
return err;
}
}
return err;
}
int event__process_event_type(event_t *self,
struct perf_session *session __unused)
{
if (perf_header__push_event(self->event_type.event_type.event_id,
self->event_type.event_type.name) < 0)
return -ENOMEM;
return 0;
}