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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-11-03 16:23:05 +0000 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2019-11-18 11:25:16 -0800 |
| commit | c0fa92ec8902492a599e6eabff9e3ef43d1afee6 (patch) | |
| tree | 0deedfd1f4bba1099195309b11024e5451071997 /drivers/gpu/drm/i915/intel_wakeref.h | |
| parent | 2d691aeca4aecbb8d0414a777a46981a8e142b05 (diff) | |
| download | linux-c0fa92ec8902492a599e6eabff9e3ef43d1afee6.tar.bz2 | |
drm/i915: Protect request peeking with RCU
Since the execlists_active() is no longer protected by the
engine->active.lock, we need to protect the request pointer with RCU to
prevent it being freed as we evaluate whether or not we need to preempt.
Fixes: df403069029d ("drm/i915/execlists: Lift process_csb() out of the irq-off spinlock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191104090158.2959-2-chris@chris-wilson.co.uk
(cherry picked from commit 7d148635253328dda7cfe55d57e3c828e9564427)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit 8eb4704b124cbd44f189709959137d77063ecfa1)
(cherry picked from commit 7e27238e149ce4f00d9cd801fe3aa0ea55e986a2)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_wakeref.h')
0 files changed, 0 insertions, 0 deletions