diff options
| author | Rob Herring <robh@kernel.org> | 2019-08-22 21:12:14 -0500 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-08-23 11:54:49 -0500 |
| commit | ce49324261956f4bdec633280f30bf0697dafaef (patch) | |
| tree | 5f685067158af28e39ddf3c91fd834a4f7a1ad73 /drivers/gpu/drm/panfrost/panfrost_issues.h | |
| parent | dfbc7a46b940b5d5ef8c3db3b7c3b51e6ec8fec4 (diff) | |
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_issues.h')
0 files changed, 0 insertions, 0 deletions