perf tools: Introduce filename__read_int helper
authorArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 17 Oct 2013 19:33:43 +0000 (16:33 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 17 Oct 2013 19:33:43 +0000 (16:33 -0300)
commit97a07f10c38064dea492794c99445f6260afcdc1
treebaa4b7832bae42e80cb0f27bde490c73875f1a95
parent6ef068cb8e77784431b6c80adc49d0b0a6a5df66
perf tools: Introduce filename__read_int helper

Just opens a file and calls atoi() in at most its first 64 bytes.

To read things like /proc/sys/kernel/perf_event_paranoid.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-669q04c5tou5pnt8jtiz6y2r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/util.c
tools/perf/util/util.h