diff options
| author | Janne Grunau <j@jannau.net> | 2025-02-26 19:00:05 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-04 14:40:10 +0200 |
| commit | 8d64b2aa3e6287ebdbd6231e07822af902ddf22a (patch) | |
| tree | c38977c763c6ba22d6246c0d4757c885b4b2f0e7 /drivers/soc | |
| parent | 0c14267f4d6f7d8173605952196f1ed2a56453b3 (diff) | |
soc: apple: rtkit: Use high prio work queue
[ Upstream commit 22af2fac88fa5dbc310bfe7d0b66d4de3ac47305 ]
rtkit messages as communication with the DCP firmware for framebuffer
swaps or input events are time critical so use WQ_HIGHPRI to prevent
user space CPU load to increase latency.
With kwin_wayland 6's explicit sync mode user space load was able to
delay the IOMFB rtkit communication enough to miss vsync for surface
swaps. Minimal test scenario is constantly resizing a glxgears
Xwayland window.
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://lore.kernel.org/r/20250226-apple-soc-misc-v2-3-c3ec37f9021b@svenpeter.dev
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/apple/rtkit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/soc/apple/rtkit.c b/drivers/soc/apple/rtkit.c index 8ec74d7539eb..1ec0c3ba0be2 100644 --- a/drivers/soc/apple/rtkit.c +++ b/drivers/soc/apple/rtkit.c @@ -731,7 +731,7 @@ static struct apple_rtkit *apple_rtkit_init(struct device *dev, void *cookie, rtk->mbox_cl.rx_callback = &apple_rtkit_rx; rtk->mbox_cl.tx_done = &apple_rtkit_tx_done; - rtk->wq = alloc_ordered_workqueue("rtkit-%s", WQ_MEM_RECLAIM, + rtk->wq = alloc_ordered_workqueue("rtkit-%s", WQ_HIGHPRI | WQ_MEM_RECLAIM, dev_name(rtk->dev)); if (!rtk->wq) { ret = -ENOMEM; |