From: Ahmad Fatoum <a.fatoum@pengutronix.de> To: barebox@lists.infradead.org Cc: Ahmad Fatoum <a.fatoum@pengutronix.de> Subject: [PATCH v4 2/8] bthread: add debug print for scheduler context switches Date: Tue, 22 Jun 2021 10:26:11 +0200 [thread overview] Message-ID: <20210622082617.18011-3-a.fatoum@pengutronix.de> (raw) In-Reply-To: <20210622082617.18011-1-a.fatoum@pengutronix.de> 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 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2021-06-22 8:27 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-22 8:26 [PATCH v4 0/8] usbgadget: add support for USB mass storage gadget Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 1/8] input: virtio: poll from poller, not bthread Ahmad Fatoum 2021-06-22 8:26 ` Ahmad Fatoum [this message] 2021-06-22 8:26 ` [PATCH v4 3/8] common: move workqueue handling from poller_call() to sched() Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 4/8] common: bthread: schedule only in command context Ahmad Fatoum 2021-06-22 9:08 ` Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 5/8] bthread: implement basic Linux-like completion API Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 6/8] Documentation: devel: background-execution: update bthread docs Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 7/8] usbgadget: refactor usbgadget_register to accept array Ahmad Fatoum 2021-06-22 8:26 ` [PATCH v4 8/8] usbgadget: add support for USB mass storage gadget Ahmad Fatoum 2021-06-25 7:34 ` [PATCH v4 0/8] " Sascha Hauer
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