Em Wed, Nov 13, 2013 at 07:03:47PM +0100, Frederic Weisbecker escreveu: > On Tue, Nov 12, 2013 at 09:58:29PM -0700, David Ahern wrote: > > Hi Namhyung and Frederic: > > > > If you recall I mentioned noting a problem with the callchain series > > showing comm's. Well, it fails on acme's perf/core. git bisect > > points to: > > > > $ git bisect bad > > 4dfced359fbc719a35527416f1b4b3999647f68b is the first bad commit > > commit 4dfced359fbc719a35527416f1b4b3999647f68b > > Author: Namhyung Kim <namhyung....@lge.com> > > Date: Fri Sep 13 16:28:57 2013 +0900 > > > > perf tools: Get current comm instead of last one > > > > At insert time, a hist entry should reference comm at the time > > otherwise > > it'll get the last comm anyway. > > > > > > How to re-create: > > > > Start point is tools/perf directory for 3.12 (Linus tree): > > $ perf sched record -o /tmp/perf.data -g -- make -j 16 > > $ perf script -i /tmp/perf.data > /tmp/1 > > > > cd to Arnaldo's tree, make perf and use it to create /tmp/2: > > $ perf script -i /tmp/perf.data > /tmp/1 > > $ diff -U3 /tmp/1 /tmp/2 | less > > > > You'll see a number of comm's showing as :<pid> instead of make, etc. > > I see. I can reproduce, I'll check and see what happens. It would be nice if > we could have an option to dump internal perf events like comm events as well > in the perf script stream.
'perf record -D' not enough? - Arnaldo -- 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/
