• Peter Zijlstra's avatar
    locking/mutex, drm: Introduce mutex_trylock_recursive() · 0f5225b0
    Peter Zijlstra authored
    By popular DRM demand, introduce mutex_trylock_recursive() to fix up the
    two GEM users.
    
    Without this it is very easy for these drivers to get stuck in
    low-memory situations and trigger OOM. Work is in progress to remove the
    need for this in at least i915.
    Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
    Cc: David Airlie <airlied@linux.ie>
    Cc: Davidlohr Bueso <dave@stgolabs.net>
    Cc: Ding Tianhong <dingtianhong@huawei.com>
    Cc: Imre Deak <imre.deak@intel.com>
    Cc: Jason Low <jason.low2@hpe.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Paul E. McKenney <paulmck@us.ibm.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rob Clark <robdclark@gmail.com>
    Cc: Terry Rudd <terry.rudd@hpe.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Tim Chen <tim.c.chen@linux.intel.com>
    Cc: Will Deacon <Will.Deacon@arm.com>
    Cc: dri-devel@lists.freedesktop.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    0f5225b0
i915_gem_shrinker.c 13.9 KB