* [PATCH] trace: fix opencoded cpumask_next_wrap() in move_to_next_cpu()
@ 2025-06-05 0:06 Yury Norov
0 siblings, 0 replies; only message in thread
From: Yury Norov @ 2025-06-05 0:06 UTC (permalink / raw)
To: Steven Rostedt, Masami Hiramatsu, Mathieu Desnoyers, linux-kernel,
linux-trace-kernel
Cc: Yury Norov
The dedicated cpumask_next_wrap() is more verbose and effective than
cpumask_next() followed by cpumask_first().
Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
kernel/trace/trace_hwlat.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index b65353ec2837..2f7b94e98317 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -325,12 +325,9 @@ static void move_to_next_cpu(void)
cpus_read_lock();
cpumask_and(current_mask, cpu_online_mask, tr->tracing_cpumask);
- next_cpu = cpumask_next(raw_smp_processor_id(), current_mask);
+ next_cpu = cpumask_next_wrap(raw_smp_processor_id(), current_mask);
cpus_read_unlock();
- if (next_cpu >= nr_cpu_ids)
- next_cpu = cpumask_first(current_mask);
-
if (next_cpu >= nr_cpu_ids) /* Shouldn't happen! */
goto change_mode;
--
2.43.0
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