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Message-Id: <1398346054-3322-1-git-send-email-namhyung@kernel.org> Date: Thu, 24 Apr 2014 22:27:32 +0900 From: Namhyung Kim <namhyung@...nel.org> To: Arnaldo Carvalho de Melo <acme@...nel.org>, Jiri Olsa <jolsa@...hat.com> Cc: Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Stephane Eranian <eranian@...gle.com>, LKML <linux-kernel@...r.kernel.org>, Namhyung Kim <namhyung.kim@....com> Subject: [PATCH v3 1/3] 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@...nel.org> --- tools/perf/util/util.c | 2 ++ 1 file changed, 2 insertions(+) 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; -- 1.7.9.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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