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Subject[tip:perf/core] perf stat: Refactor the code to strip csv output with ltrim()
Commit-ID:  b07c40df1f4e6f937271921cb116d570bb9c4a31
Gitweb: http://git.kernel.org/tip/b07c40df1f4e6f937271921cb116d570bb9c4a31
Author: Taeung Song <treeze.taeung@gmail.com>
AuthorDate: Fri, 7 Apr 2017 23:24:18 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 11 Apr 2017 08:45:10 -0300

perf stat: Refactor the code to strip csv output with ltrim()

To strip csv output, use ltrim() instead of just while loop and
isspace() at print_metric_{only}_csv().

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1491575061-704-3-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-stat.c | 10 ++--------
1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 2158ea1..868e086a 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -875,10 +875,7 @@ static void print_metric_csv(void *ctx,
return;
}
snprintf(buf, sizeof(buf), fmt, val);
- vals = buf;
- while (isspace(*vals))
- vals++;
- ends = vals;
+ ends = vals = ltrim(buf);
while (isdigit(*ends) || *ends == '.')
ends++;
*ends = 0;
@@ -950,10 +947,7 @@ static void print_metric_only_csv(void *ctx, const char *color __maybe_unused,
return;
unit = fixunit(tbuf, os->evsel, unit);
snprintf(buf, sizeof buf, fmt, val);
- vals = buf;
- while (isspace(*vals))
- vals++;
- ends = vals;
+ ends = vals = ltrim(buf);
while (isdigit(*ends) || *ends == '.')
ends++;
*ends = 0;
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