tree 23419e9b7bb39be5296ef30b8c828ce1bf44f297
parent 4418351f06d9ce73acc846158c20186965f920f3
author Frederic Weisbecker <fweisbec@gmail.com> 1245961287 +0200
committer Ingo Molnar <mingo@elte.hu> 1245961555 +0200

perf record: Fix unhandled io return value

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 <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1245961287-5327-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>