From 8dc58101f2c838355d44402aa77646649d10dbec Mon Sep 17 00:00:00 2001 From: Tom Zanussi Date: Thu, 1 Apr 2010 23:59:15 -0500 Subject: 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 Acked-by: Thomas Gleixner 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 --- tools/perf/util/event.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/perf/util/event.h') diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 7f7cf8539cfe..5c1eba671305 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -83,6 +83,10 @@ struct build_id_event { char filename[]; }; +enum perf_header_event_type { /* above any possible kernel type */ + PERF_RECORD_HEADER_MAX = 64, +}; + typedef union event_union { struct perf_event_header header; struct ip_event ip; -- cgit v1.2.2