From 3928ddbe994cce1da1b6365b0db04d5765f254f4 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 25 Jun 2009 22:21:27 +0200 Subject: perf record: Fix unhandled io return value MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Building latest perfcounter fails on the following error: builtin-record.c: In function ‘create_counter’: builtin-record.c:451: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result make: *** [builtin-record.o] Erreur 1 Just check if we successfully read the perf file descriptor. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Paul Mackerras Cc: Frederic Weisbecker LKML-Reference: <1245961287-5327-1-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar --- tools/perf/builtin-record.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 798a56d890e..d18546f37d7 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -448,7 +448,10 @@ try_again: } } - read(fd[nr_cpu][counter], &read_data, sizeof(read_data)); + if (read(fd[nr_cpu][counter], &read_data, sizeof(read_data)) == -1) { + perror("Unable to read perf file descriptor\n"); + exit(-1); + } perf_header_attr__add_id(h_attr, read_data.id); -- cgit v1.2.3-18-g5258