[PATCH v4 2/8] bthread: add debug print for scheduler context switches
From: Ahmad Fatoum <a.fatoum@pengutronix.de>
Date: 2021-06-22 08:27:49
Subsystem:
the rest · Maintainer:
Linus Torvalds
When debugging around bthreads, it's often useful to log context switches. Make this easier by adding a ready-to-use pr_debug at the correct location. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> --- common/bthread.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/common/bthread.c b/common/bthread.c
index c811797130eb..80651344da64 100644
--- a/common/bthread.c
+++ b/common/bthread.c@@ -163,7 +163,10 @@ void bthread_info(void) void bthread_reschedule(void) { - bthread_schedule(list_next_entry(current, list)); + struct bthread *next = list_next_entry(current, list); + if (current != next) + pr_debug("switch %s -> %s\n", current->name, next->name); + bthread_schedule(next); } void bthread_schedule(struct bthread *to)
--
2.29.2
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