From e148c76083dc06ce618d768c0bee0a0edda96a54 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 24 Apr 2014 22:27:32 +0900 Subject: perf tools: Handle EINTR error for readn/writen Those readn/writen functions are to ensure read/write does I/O for a given size exactly. But ion() - its implementation - does not handle in case it returns prematurely due to a signal. As it's not an error itself so just retry the operation. Signed-off-by: Namhyung Kim Link: http://lkml.kernel.org/r/1398346054-3322-1-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/util/util.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools/perf/util/util.c') diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 9f66549562bd..7fff6be07f07 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -166,6 +166,8 @@ static ssize_t ion(bool is_read, int fd, void *buf, size_t n) ssize_t ret = is_read ? read(fd, buf, left) : write(fd, buf, left); + if (ret < 0 && errno == EINTR) + continue; if (ret <= 0) return ret; -- cgit v1.2.3-59-g8ed1b