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| author | Rob Herring <robh@kernel.org> | 2019-08-22 21:12:14 -0500 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-08-28 10:02:39 -0500 |
| commit | 55b9a0549e4303ca43481f9ba2cdfa305277d97d (patch) | |
| tree | b8520f2a5fd14c1508588c1501ce0cb591d9fc38 /drivers/gpu/drm/panfrost/panfrost_job.c | |
| parent | edbd7f318cd66cec4588a28ba6985b014456dbca (diff) | |
| download | linux-55b9a0549e4303ca43481f9ba2cdfa305277d97d.tar.gz | |
drm/panfrost: Use mutex_trylock in panfrost_gem_purge
Lockdep reports a circular locking dependency with pages_lock taken in
the shrinker callback. The deadlock can't actually happen with current
users at least as a BO will never be purgeable when pages_lock is held.
To be safe, let's use mutex_trylock() instead and bail if a BO is locked
already.
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190823021216.5862-7-robh@kernel.org
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_job.c')
0 files changed, 0 insertions, 0 deletions