lkml.org 
[lkml]   [2022]   [Jul]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 03/10] drm: use idr_init_base() to initialize master->magic_map
Date
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_auth.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
index 6e433d465f41..63395bebaa6b 100644
--- a/drivers/gpu/drm/drm_auth.c
+++ b/drivers/gpu/drm/drm_auth.c
@@ -140,7 +140,7 @@ struct drm_master *drm_master_create(struct drm_device *dev)

kref_init(&master->refcount);
drm_master_legacy_init(master);
- idr_init(&master->magic_map);
+ idr_init_base(&master->magic_map, 1);
master->dev = dev;

/* initialize the tree of output resource lessees */
--
2.36.1
\
 
 \ /
  Last update: 2022-07-01 20:55    [W:0.226 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site