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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-04 14:40:02 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-10-04 15:39:17 +0100 |
| commit | 7e8057626640cfedbae000c5032be32269713687 (patch) | |
| tree | e95ecef1231f0eb7fddb5115b53ce2e525607907 /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | drm/i915: Move idle barrier cleanup into engine-pm (diff) | |
| download | linux-dev-7e8057626640cfedbae000c5032be32269713687.tar.xz linux-dev-7e8057626640cfedbae000c5032be32269713687.zip | |
drm/i915: Drop struct_mutex from around i915_retire_requests()
We don't need to hold struct_mutex now for retiring requests, so drop it
from i915_retire_requests() and i915_gem_wait_for_idle(), finally
removing I915_WAIT_LOCKED for good.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-8-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 42 |
1 files changed, 12 insertions, 30 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index fec9fb7cc384..385289895107 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -3621,6 +3621,7 @@ static int i915_drop_caches_set(void *data, u64 val) { struct drm_i915_private *i915 = data; + int ret; DRM_DEBUG("Dropping caches: 0x%08llx [0x%08llx]\n", val, val & DROP_ALL); @@ -3630,40 +3631,21 @@ i915_drop_caches_set(void *data, u64 val) I915_IDLE_ENGINES_TIMEOUT)) intel_gt_set_wedged(&i915->gt); - /* No need to check and wait for gpu resets, only libdrm auto-restarts - * on ioctls on -EAGAIN. */ - if (val & (DROP_ACTIVE | DROP_IDLE | DROP_RETIRE | DROP_RESET_SEQNO)) { - int ret; + if (val & DROP_RETIRE) + i915_retire_requests(i915); - ret = mutex_lock_interruptible(&i915->drm.struct_mutex); + if (val & (DROP_IDLE | DROP_ACTIVE)) { + ret = i915_gem_wait_for_idle(i915, + I915_WAIT_INTERRUPTIBLE, + MAX_SCHEDULE_TIMEOUT); if (ret) return ret; + } - /* - * To finish the flush of the idle_worker, we must complete - * the switch-to-kernel-context, which requires a double - * pass through wait_for_idle: first queues the switch, - * second waits for the switch. - */ - if (ret == 0 && val & (DROP_IDLE | DROP_ACTIVE)) - ret = i915_gem_wait_for_idle(i915, - I915_WAIT_INTERRUPTIBLE | - I915_WAIT_LOCKED, - MAX_SCHEDULE_TIMEOUT); - - if (ret == 0 && val & DROP_IDLE) - ret = i915_gem_wait_for_idle(i915, - I915_WAIT_INTERRUPTIBLE | - I915_WAIT_LOCKED, - MAX_SCHEDULE_TIMEOUT); - - if (val & DROP_RETIRE) - i915_retire_requests(i915); - - mutex_unlock(&i915->drm.struct_mutex); - - if (ret == 0 && val & DROP_IDLE) - ret = intel_gt_pm_wait_for_idle(&i915->gt); + if (val & DROP_IDLE) { + ret = intel_gt_pm_wait_for_idle(&i915->gt); + if (ret) + return ret; } if (val & DROP_RESET_ACTIVE && intel_gt_terminally_wedged(&i915->gt)) |