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[05/10] drm: use idr_init_base() to initialize mode_config.object_idr

Message ID 20220701185303.284082-6-dakr@redhat.com (mailing list archive)
State New, archived
Headers show
Series drm: use idr_init_base() over idr_init() if applicable | expand

Commit Message

Danilo Krummrich July 1, 2022, 6:52 p.m. UTC 
From: Danilo Krummrich <dakr@redhat.com>

idr_init_base(), implemented by commit 6ce711f27500 ("idr: Make 1-based
IDRs more efficient"), let us set an arbitrary base other than
idr_init(), which uses base 0.

Since, for this IDR, no ID < 1 is ever requested/allocated, using
idr_init_base(&idr, 1) avoids unnecessary tree walks.

Signed-off-by: Danilo Krummrich <dakr@redhat.com>
---
 drivers/gpu/drm/drm_mode_config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index 37b4b9f0e468..e2a295a4ee0b 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -411,7 +411,7 @@  int drmm_mode_config_init(struct drm_device *dev)
 	INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
 	INIT_LIST_HEAD(&dev->mode_config.plane_list);
 	INIT_LIST_HEAD(&dev->mode_config.privobj_list);
-	idr_init(&dev->mode_config.object_idr);
+	idr_init_base(&dev->mode_config.object_idr, 1);
 	idr_init(&dev->mode_config.tile_idr);
 	ida_init(&dev->mode_config.connector_ida);
 	spin_lock_init(&dev->mode_config.connector_list_lock);