Commit-ID: a84808083688d82d7f1e5786ccf5df0ff7d448cb Gitweb: http://git.kernel.org/tip/a84808083688d82d7f1e5786ccf5df0ff7d448cb Author: Adrian Hunter <adrian.hun...@intel.com> AuthorDate: Tue, 11 Nov 2014 16:16:41 +0200 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Wed, 19 Nov 2014 12:37:26 -0300
perf tools: Only override the default :tid comm entry Events may still be ordered even if there are no timestamps e.g. if the data is recorded per-thread. Also synthesized COMM events have a timestamp of zero. Consequently it is better to keep comm entries even if they have a timestamp of zero. However, when a struct thread is created the command string is not known and a comm entry with a string of the form ":<tid>" is used. In that case thread->comm_set is false and the comm entry should be overridden. Signed-off-by: Adrian Hunter <adrian.hun...@intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhy...@gmail.com> Cc: Paul Mackerras <pau...@samba.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/r/1415715423-15563-4-git-send-email-adrian.hun...@intel.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/thread.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index a2157f0..9ebc8b1 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -103,15 +103,14 @@ struct comm *thread__exec_comm(const struct thread *thread) return last; } -/* CHECKME: time should always be 0 if event aren't ordered */ int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp, bool exec) { struct comm *new, *curr = thread__comm(thread); int err; - /* Override latest entry if it had no specific time coverage */ - if (!curr->start && !curr->exec) { + /* Override the default :tid entry */ + if (!thread->comm_set) { err = comm__override(curr, str, timestamp, exec); if (err) return err; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
