From: Arnaldo Carvalho de Melo <[email protected]>

1. Since all callers either test if it is less than zero or assign its
   result to an int variable, convert it from ssize_t to int;

2. There is just one use for the 'session' variable, so use rec->session
   directly instead;

3. No need to store the result of perf_data_file__write, since that
   result is either 'size' or -1, the later making the error result to
   be stored in 'errno' and accessed thru printf's %m in the pr_err
   call.

Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/builtin-record.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 8eed3d752c80..e8d606caf747 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -76,19 +76,14 @@ struct perf_record {
        long                    samples;
 };
 
-static ssize_t perf_record__write(struct perf_record *rec,
-                                 void *buf, size_t size)
+static int perf_record__write(struct perf_record *rec, void *bf, size_t size)
 {
-       struct perf_session *session = rec->session;
-       ssize_t ret;
-
-       ret = perf_data_file__write(session->file, buf, size);
-       if (ret < 0) {
+       if (perf_data_file__write(rec->session->file, bf, size) < 0) {
                pr_err("failed to write perf data, error: %m\n");
                return -1;
        }
 
-       rec->bytes_written += ret;
+       rec->bytes_written += size;
        return 0;
 }
 
-- 
1.8.1.4

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