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| author | Eric Anholt <eric@anholt.net> | 2009-03-20 02:56:14 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-03-29 10:31:37 +0200 |
| commit | 955a23eb3cfc773e71b05bb7a0a0938a9e1b2568 (patch) | |
| tree | 7a9124ddf103ef1f6337484bb5e5ae51c9c288a6 /include/drm | |
| parent | drm/radeon: add regs required for occlusion queries support (diff) | |
| download | linux-955a23eb3cfc773e71b05bb7a0a0938a9e1b2568.tar.xz linux-955a23eb3cfc773e71b05bb7a0a0938a9e1b2568.zip | |
drm: Use a little stash on the stack to avoid kmalloc in most DRM ioctls.
The kmalloc was taking up about 1.5% of the CPU on an ioctl-heavy workload
(x11perf -aa10text on 965). Initial results look like they have a
corresponding improvement in performance for aa10text, but more numbers might
not hurt.
Thanks to ajax for pointing out this performance regression I'd introduced
back in 2007.
[airlied: well I introduced it sneakily inside Eric's patch]
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm')
0 files changed, 0 insertions, 0 deletions