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authorDaniel Vetter <daniel.vetter@ffwll.ch>2018-03-27 10:23:54 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2018-03-28 17:07:36 +0200
commitae358dacd217370cc362f1674712c4e9246ace8d (patch)
tree049bc8fbf62f7ef091087ee0e5d9d017ebbfc116 /lib/xz
parentfcb1e57f79c0ecf4c85fecd2294a469367cbddd0 (diff)
drm/udl: Get rid of dev->struct_mutex usage
It's only used to protect our page list, and only when we know we have a full reference. This means none of these code paths can ever race with the final unref, and hence we do not need dev->struct_mutex serialization and can simply switch to our own locking. For more context the only magic the locked gem_free_object provides is that it prevents concurrent final unref (and destruction) of gem objects while anyone is holding dev->struct_mutex. This was used by i915 (and other drivers) to implement eviction handling with less headaches. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Dave Airlie <airlied@redhat.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180327082356.24516-3-daniel.vetter@ffwll.ch
Diffstat (limited to 'lib/xz')
0 files changed, 0 insertions, 0 deletions