[tip:perf/urgent] perf kvm stat live: Fix perf_evlist__add_pollfd error handling

From: tip-bot for Jiri Olsa
Date: Wed Oct 15 2014 - 06:02:00 EST

Commit-ID: fe636adda6caff6022e61b37202495dbf68e1410
Gitweb: http://git.kernel.org/tip/fe636adda6caff6022e61b37202495dbf68e1410
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Wed, 1 Oct 2014 18:00:27 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 3 Oct 2014 09:39:47 -0300

perf kvm stat live: Fix perf_evlist__add_pollfd error handling

With the interface changed in following commit:

2171a9256862 tools lib fd array: Allow associating an integer cookie with each entry

the perf_evlist__add_pollfd function now returns the fd position in the
pollfd array.

We need to change this function's error check condition.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Milian Wolff <mail@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1412179229-19466-3-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/builtin-kvm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index d8bf227..663d6ed 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -928,12 +928,12 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
goto out;

- if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd))
+ if (perf_evlist__add_pollfd(kvm->evlist, kvm->timerfd) < 0)
goto out;


- if (perf_evlist__add_pollfd(kvm->evlist, fileno(stdin)))
+ if (perf_evlist__add_pollfd(kvm->evlist, fileno(stdin)) < 0)
goto out;

nr_stdin = nr_fds;
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