[PATCH 09/13] perf sched: Use strerror_r instead of strerror

From: Masami Hiramatsu
Date: Wed Aug 13 2014 - 22:24:15 EST


Use strerror_r instead of strerror in error message
for thread-safety.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
---
tools/perf/builtin-sched.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index f5874a2..9c9287f 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -428,6 +428,7 @@ static u64 get_cpu_usage_nsec_parent(void)
static int self_open_counters(void)
{
struct perf_event_attr attr;
+ char sbuf[STRERR_BUFSIZE];
int fd;

memset(&attr, 0, sizeof(attr));
@@ -440,7 +441,8 @@ static int self_open_counters(void)

if (fd < 0)
pr_err("Error: sys_perf_event_open() syscall returned "
- "with %d (%s)\n", fd, strerror(errno));
+ "with %d (%s)\n", fd,
+ strerror_r(errno, sbuf, sizeof(sbuf)));
return fd;
}


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