[tip:perf/core] perf tools: Use asprintf instead of malloc plus snprintf

From: tip-bot for Adrian Hunter
Date: Tue Dec 10 2013 - 04:16:39 EST


Commit-ID: d88938ebc97df72320609b33aa0cf9a9a98accb1
Gitweb: http://git.kernel.org/tip/d88938ebc97df72320609b33aa0cf9a9a98accb1
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Tue, 3 Dec 2013 09:23:06 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 4 Dec 2013 13:46:36 -0300

perf tools: Use asprintf instead of malloc plus snprintf

The asprintf library function is equivalent to malloc plus snprintf so
use it because it is simpler.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1386055390-13757-4-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/srcline.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index d11aefb..4c8e816 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -227,7 +227,6 @@ char *get_srcline(struct dso *dso, unsigned long addr)
unsigned line = 0;
char *srcline;
char *dso_name = dso->long_name;
- size_t size;

if (!dso->has_srcline)
return SRCLINE_UNKNOWN;
@@ -241,13 +240,7 @@ char *get_srcline(struct dso *dso, unsigned long addr)
if (!addr2line(dso_name, addr, &file, &line))
goto out;

- /* just calculate actual length */
- size = snprintf(NULL, 0, "%s:%u", file, line) + 1;
-
- srcline = malloc(size);
- if (srcline)
- snprintf(srcline, size, "%s:%u", file, line);
- else
+ if (asprintf(&srcline, "%s:%u", file, line) < 0)
srcline = SRCLINE_UNKNOWN;

free(file);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/