linux-kernel - [PATCH] tracing/osnoise: Use for_each_online_cpu() instead of for_each

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Message-ID: <20250811064158.2456-1-wangfushuai@baidu.com>
Date: Mon, 11 Aug 2025 14:41:58 +0800
From: Fushuai Wang <wangfushuai@...du.com>
To: <linux-trace-kernel@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <rostedt@...dmis.org>, <mhiramat@...nel.org>,
	<mathieu.desnoyers@...icios.com>, Fushuai Wang <wangfushuai@...du.com>
Subject: [PATCH] tracing/osnoise: Use for_each_online_cpu() instead of for_each_cpu()

Replace the opencoded for_each_cpu(cpu, cpu_online_mask) loop with the
more readable and equivalent for_each_online_cpu(cpu) macro.

Signed-off-by: Fushuai Wang <wangfushuai@...du.com>
---
 kernel/trace/trace_osnoise.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index fd259da0aa64..4cb464894faf 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -271,7 +271,7 @@ static inline void tlat_var_reset(void)
 	 * So far, all the values are initialized as 0, so
 	 * zeroing the structure is perfect.
 	 */
-	for_each_cpu(cpu, cpu_online_mask) {
+	for_each_online_cpu(cpu) {
 		tlat_var = per_cpu_ptr(&per_cpu_timerlat_var, cpu);
 		if (tlat_var->kthread)
 			hrtimer_cancel(&tlat_var->timer);
@@ -295,7 +295,7 @@ static inline void osn_var_reset(void)
 	 * So far, all the values are initialized as 0, so
 	 * zeroing the structure is perfect.
 	 */
-	for_each_cpu(cpu, cpu_online_mask) {
+	for_each_online_cpu(cpu) {
 		osn_var = per_cpu_ptr(&per_cpu_osnoise_var, cpu);
 		memset(osn_var, 0, sizeof(*osn_var));
 	}
-- 
2.36.1