diff options
| author | Janne Grunau <j@jannau.net> | 2025-02-26 19:00:05 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:34 +0200 |
| commit | 92c6687ba951f311dc36c0bb7c62dd9b5fb9e244 (patch) | |
| tree | 24b76a247ea519190eacdbaf12320727b949759a | |
| parent | e359d62886cb1d7224e331575d6ab07f97b7fb14 (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>
| -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 e6d940292c9f..00d59a81db88 100644 --- a/drivers/soc/apple/rtkit.c +++ b/drivers/soc/apple/rtkit.c @@ -667,7 +667,7 @@ struct apple_rtkit *apple_rtkit_init(struct device *dev, void *cookie, rtk->mbox->rx = apple_rtkit_rx; rtk->mbox->cookie = rtk; - 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; |