From: Wei Fu <fuweid89@gmail.com>
Date: Sat, 4 Sep 2021 05:42:05 +0000 (+0800)
Subject: libbpf-tools/syscount: use atomic_add for counter
X-Git-Tag: v0.22.0~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=65d783936e89aa13b998d3718b26f38088676d66;p=platform%2Fupstream%2Fbcc.git

libbpf-tools/syscount: use atomic_add for counter

Signed-off-by: Wei Fu <fuweid89@gmail.com>
---

diff --git a/libbpf-tools/syscount.bpf.c b/libbpf-tools/syscount.bpf.c
index 3719177f..d6909dcf 100644
--- a/libbpf-tools/syscount.bpf.c
+++ b/libbpf-tools/syscount.bpf.c
@@ -91,11 +91,11 @@ int sys_exit(struct trace_event_raw_sys_exit *args)
 	key = (count_by_process) ? pid : args->id;
 	val = bpf_map_lookup_or_try_init(&data, &key, &zero);
 	if (val) {
-		val->count++;
+		__sync_fetch_and_add(&val->count, 1);
 		if (count_by_process)
 			save_proc_name(val);
 		if (measure_latency)
-			val->total_ns += bpf_ktime_get_ns() - *start_ts;
+			__sync_fetch_and_add(&val->total_ns, bpf_ktime_get_ns() - *start_ts);
 	}
 	return 0;
 }