linux/include/drm
Arnd Bergmann ed8b670409 drm: convert drm_ioctl to unlocked_ioctl
drm_ioctl is called with the Big Kernel Lock held,
which shows up very high in statistics on vfs_ioctl.

Moving the lock into the drm_ioctl function itself
makes sure we blame the right subsystem and it gets
us one step closer to eliminating the locked version
of fops->ioctl.

Since drm_ioctl does not require the lock itself,
we only need to hold it while calling the specific
handler. The 32 bit conversion handlers do not
interact with any other code, so they don't need
the BKL here either and can just call drm_ioctl.

As a bonus, this cleans up all the other users
of drm_ioctl which now no longer have to find
the inode or call lock_kernel.

[airlied: squashed the non-driver bits
of the second patch in here, this provides
the flag for drivers to use to select unlocked
ioctls - but doesn't modify any drivers].

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.sourceforge.net
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-18 11:22:31 +10:00
..
i2c drm/nouveau: Add DRM driver for NVIDIA GPUs 2009-12-11 21:29:34 +10:00
ttm drm/ttm: Add more driver type enums 2009-12-15 08:38:18 +10:00
Kbuild Merge remote branch 'korg/drm-vmware-staging' into drm-core-next 2009-12-18 09:53:50 +10:00
drm.h Merge remote branch 'anholt/drm-intel-next' into drm-linus 2009-12-08 14:03:47 +10:00
drmP.h drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
drm_cache.h drm/ttm: consolidate cache flushing code in one place. 2009-08-27 09:53:47 +10:00
drm_core.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_crtc.h Merge remote branch 'anholt/drm-intel-next' into drm-linus 2009-12-08 14:03:47 +10:00
drm_crtc_helper.h drm/fb: add setcmap and fix 8-bit support. 2009-10-05 10:00:59 +10:00
drm_dp_helper.h drm/radeon/kms: add support for DP modesetting 2009-12-08 10:22:44 +10:00
drm_edid.h drm/edid: Decode 3-byte CVT codes from EDID 1.4 2009-12-04 08:53:47 +10:00
drm_encoder_slave.h drm/kms: no need to return void value (encoder) 2009-08-19 16:06:49 +10:00
drm_fb_helper.h drm/fb: add more correct 8/16/24/32 bpp fb support. 2009-10-06 13:54:01 +10:00
drm_hashtab.h drm: include kernel list header file in hashtab header 2009-06-12 15:56:34 +10:00
drm_memory.h includecheck fix: include/drm, drm_memory.h 2009-09-20 16:02:58 +05:30
drm_mm.h drm: Add memory manager debug function 2009-12-10 15:28:06 +10:00
drm_mode.h drm: Add dirty ioctl and property 2009-12-04 09:25:47 +10:00
drm_os_linux.h drm/i915: add i915_lp_ring_sync helper 2009-11-05 14:47:07 -08:00
drm_pciids.h Merge branch 'drm-next' of ../drm-next into drm-linus 2009-10-08 14:03:05 +10:00
drm_sarea.h drm: move to kref per-master structures. 2008-12-29 17:47:22 +10:00
drm_sman.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
drm_sysfs.h drm: Enable drm drivers to add drm sysfs devices. 2009-08-19 16:08:51 +10:00
i810_drm.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
i830_drm.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
i915_drm.h Merge remote branch 'anholt/drm-intel-next' into drm-linus 2009-12-08 14:03:47 +10:00
mga_drm.h drm: Add compatibility #ifdefs for *BSD 2009-12-04 08:59:28 +10:00
nouveau_drm.h drm/nouveau: Add DRM driver for NVIDIA GPUs 2009-12-11 21:29:34 +10:00
r128_drm.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
radeon_drm.h drm: Add compatibility #ifdefs for *BSD 2009-12-04 08:59:28 +10:00
savage_drm.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
sis_drm.h drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
via_drm.h drm: Add compatibility #ifdefs for *BSD 2009-12-04 08:59:28 +10:00
vmwgfx_drm.h drm/vmwgfx: Add DRM driver for VMware Virtual GPU 2009-12-15 08:38:43 +10:00