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author | Tom Zanussi <tzanussi@gmail.com> | 2010-04-01 23:59:15 -0500 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-04-14 11:56:05 +0200 |
commit | 8dc58101f2c838355d44402aa77646649d10dbec (patch) | |
tree | d4cc08cccfec56d37dee4c4b2383ffe56d176494 /tools/perf/util/session.h | |
parent | c05556421742eb47f80301767653a4bcb19de9de (diff) | |
download | op-kernel-dev-8dc58101f2c838355d44402aa77646649d10dbec.zip op-kernel-dev-8dc58101f2c838355d44402aa77646649d10dbec.tar.gz |
perf: Add pipe-specific header read/write and event processing code
This patch makes several changes to allow the perf event stream
to be sent and received over a pipe:
- adds pipe-specific versions of the header read/write code
- adds pipe-specific version of the event processing code
- adds a range of event types to be used for header or other
pseudo events, above the range used by the kernel
- checks the return value of event handlers, which they can use
to skip over large events during event processing rather than actually
reading them into event objects.
- unifies the multiple do_read() functions and updates its
users.
Note that none of these changes affect the existing perf data
file format or processing - this code only comes into play if
perf output is sent to stdout (or is read from stdin).
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: <1270184365-8281-2-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/session.h')
-rw-r--r-- | tools/perf/util/session.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 27f4c2d..5f78911 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -27,6 +27,7 @@ struct perf_session { u64 sample_type; struct ref_reloc_sym ref_reloc_sym; int fd; + bool fd_pipe; int cwdlen; char *cwd; char filename[0]; @@ -92,6 +93,9 @@ static inline struct map * return map_groups__new_module(&self->kmaps, start, filename); } +int do_read(int fd, void *buf, size_t size); +void perf_session__update_sample_type(struct perf_session *self); + #ifdef NO_NEWT_SUPPORT static inline int perf_session__browse_hists(struct rb_root *hists __used, u64 nr_hists __used, |