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perf: Convert perf header attrs into attr events

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Bypasses the attr 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.

Making the attrs into events allows them to be streamed over a
pipe along with the rest of the header data (in later patches).
It also paves the way to allowing events to be added and removed
from perf sessions dynamically.

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: <1270184365-8281-6-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Tom Zanussi
2010-04-01 23:59:19 -05:00
committed by Ingo Molnar
parent c239da3b4b
commit 2c46dbb517
8 changed files with 136 additions and 2 deletions
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10
tools/perf/util/event.h
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@@ -84,7 +84,14 @@ struct build_id_event {
};
enum perf_header_event_type { /* above any possible kernel type */
PERF_RECORD_HEADER_MAX = 64,
PERF_RECORD_HEADER_ATTR = 64,
PERF_RECORD_HEADER_MAX
};
struct attr_event {
struct perf_event_header header;
struct perf_event_attr attr;
u64 id[];
};
typedef union event_union {
@@ -96,6 +103,7 @@ typedef union event_union {
struct lost_event lost;
struct read_event read;
struct sample_event sample;
struct attr_event attr;
} event_t;
struct events_stats {