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tools lib traceevent: Add state member to struct trace_seq

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The trace_seq->state is for tracking errors during the use of trace_seq
APIs and getting rid of die() in it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/87fvopalbb.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2013-12-19 18:17:44 +09:00
committed by Arnaldo Carvalho de Melo
parent 7d16c63423
commit 3c6d8d8442
3 changed files with 50 additions and 14 deletions
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7
tools/lib/traceevent/event-parse.h
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@@ -58,6 +58,12 @@ struct pevent_record {
#endif
};
enum trace_seq_fail {
TRACE_SEQ__GOOD,
TRACE_SEQ__BUFFER_POISONED,
TRACE_SEQ__MEM_ALLOC_FAILED,
};
/*
* Trace sequences are used to allow a function to call several other functions
* to create a string of data to use (up to a max of PAGE_SIZE).
@@ -68,6 +74,7 @@ struct trace_seq {
unsigned int buffer_size;
unsigned int len;
unsigned int readpos;
enum trace_seq_fail state;
};
void trace_seq_init(struct trace_seq *s);