forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

drm: create mode_config idr lock

Browse source 
Create a separate mode_config IDR lock for simplicity.  The core DRM
config structures (connector, mode, etc. lists) are still protected by
the mode_config mutex, but the CRTC IDR (used for the various identifier
IDs) is now protected by the mode_config idr_mutex.  Simplifies the
locking a bit and removes a warning.

All objects are protected by the config mutex, we may in the future,
split the object further to have reference counts.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jesse Barnes 2009-01-19 17:21:45 +10:00 • committed by Dave Airlie
parent c1ff85d977
commit ad2563c2e4
2 changed files with 11 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/drm/drm_crtc.h
View file

@ -528,7 +528,8 @@ struct drm_mode_group {
*
*/
struct drm_mode_config {
struct mutex mutex; /* protects configuration and IDR */
struct mutex mutex; /* protects configuration (mode lists etc.) */
struct mutex idr_mutex; /* for IDR management */
struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
/* this is limited to one for now */
int num_fb;