From: Shang XiaoJing <shangxiaojing@huawei.com>
Date: Thu, 8 Sep 2022 02:11:38 +0000 (+0800)
Subject: perf trace: Use zalloc() to save initialization of syscall_stats
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e3e7572fa8062b72385575bf04170621a4a8c447;p=linux.git

perf trace: Use zalloc() to save initialization of syscall_stats

As most members of syscall_stats is set to 0 in thread__update_stats,
using zalloc() directly.

Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908021141.27134-2-shangxiaojing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 0bd9d01c0df9d..3ecc31375f90e 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2173,13 +2173,10 @@ static void thread__update_stats(struct thread *thread, struct thread_trace *ttr
 
 	stats = inode->priv;
 	if (stats == NULL) {
-		stats = malloc(sizeof(*stats));
+		stats = zalloc(sizeof(*stats));
 		if (stats == NULL)
 			return;
 
-		stats->nr_failures = 0;
-		stats->max_errno   = 0;
-		stats->errnos	   = NULL;
 		init_stats(&stats->stats);
 		inode->priv = stats;
 	}