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| author | Namhyung Kim <namhyung@kernel.org> | 2014-04-24 13:27:32 (GMT) |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-04-29 12:26:30 (GMT) |
| commit | e148c76083dc06ce618d768c0bee0a0edda96a54 (patch) | |
| tree | 6c044eb662edb540d246a8417d7c2133cc98233b | |
| parent | 201131998fbf074b03679afedcc29948e63331ef (diff) | |
| download | linux-e148c76083dc06ce618d768c0bee0a0edda96a54.tar.xz | |
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 <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1398346054-3322-1-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
| -rw-r--r-- | tools/perf/util/util.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 9f66549..7fff6be 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; |