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perf record: Don't exit in live mode when no tracepoints are enabled 

With this I was able to actually test Tom Zanussi's two previous patches
in my usual perf testing ways, i.e. without any tracepoints activated.

Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-05-02 13:37:24 -03:00
parent 454c407ec1
commit 2c9faa0600
1 changed files with 9 additions and 6 deletions
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15
tools/perf/builtin-record.c
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@ -666,12 +666,15 @@ static int __cmd_record(int argc, const char **argv)
nr_counters,
process_synthesized_event,
session);
if (err <= 0) {
pr_err("Couldn't record tracing data.\n");
return err;
}
advance_output(err);
/*
* FIXME err <= 0 here actually means that there were no tracepoints
* so its not really an error, just that we don't need to synthesize
* anything.
* We really have to return this more properly and also propagate
* errors that now are calling die()
*/
if (err > 0)
advance_output(err);
}
machine = perf_session__find_host_machine(session);