[PATCH] drm/qxl: optimize idr_preload allocation flags
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From: lirongqing <hidden>
Date: 2026-02-05 06:12:26
Also in:
dri-devel, lkml
Subsystem:
drm driver for qxl virtual gpu, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Dave Airlie, Gerd Hoffmann, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
From: Li RongQing <redacted> idr_preload() is called in a sleepable context before acquiring a spinlock. Change the allocation flag from GFP_ATOMIC to GFP_KERNEL to allow direct reclaim and improve allocation success rate under memory pressure. Signed-off-by: Li RongQing <redacted> --- drivers/gpu/drm/qxl/qxl_cmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index 2e3200d..dd61d2a 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c@@ -423,7 +423,7 @@ int qxl_surface_id_alloc(struct qxl_device *qdev, uint32_t handle; int idr_ret; again: - idr_preload(GFP_ATOMIC); + idr_preload(GFP_KERNEL); spin_lock(&qdev->surf_id_idr_lock); idr_ret = idr_alloc(&qdev->surf_id_idr, NULL, 1, 0, GFP_NOWAIT); spin_unlock(&qdev->surf_id_idr_lock);
--
2.9.4