diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-12 11:53:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-12 20:47:24 +0000 |
| commit | 22ca8a452e5791c9721e1ba61e95651fc00a9e4d (patch) | |
| tree | 953585168e57acde72c5e3496d13db44f19cd53e /drivers/gpu/drm/i915/gt/intel_gt.c | |
| parent | c46c320c02d041cb793f22550d4fc5a03d209205 (diff) | |
drm/i915/gt: Wait for RCUs frees before asserting idle on unload
During driver unload, we have many asserts that we have released our
bookkeeping structs and are idle. In some cases, these struct are
protected by RCU and we do not release them until after an RCU grace
period.
Reported-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: 130a95e9098e ("drm/i915/gem: Consolidate ctx->engines[] release")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200312115307.16460-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 3dea8881e915..d09f7596cb98 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -667,6 +667,9 @@ void intel_gt_driver_release(struct intel_gt *gt) void intel_gt_driver_late_release(struct intel_gt *gt) { + /* We need to wait for inflight RCU frees to release their grip */ + rcu_barrier(); + intel_uc_driver_late_release(>->uc); intel_gt_fini_requests(gt); intel_gt_fini_reset(gt); |