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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-22 07:09:12 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-22 08:53:40 +0100 |
| commit | e2ccc50a3a6c90cace6a9aef40072e558dd13863 (patch) | |
| tree | a66f4aa9b6f2825955aca14a3cf6cef705a056ac /drivers/gpu/drm/i915/gvt | |
| parent | 8e458fe2ee05cf3fb1fb6bf9857e71e15c4d7441 (diff) | |
| download | linux-e2ccc50a3a6c90cace6a9aef40072e558dd13863.tar.gz linux-e2ccc50a3a6c90cace6a9aef40072e558dd13863.tar.bz2 linux-e2ccc50a3a6c90cace6a9aef40072e558dd13863.zip | |
drm/i915: Track ggtt fence reservations under its own mutex
We can reduce the locking for fence registers from the dev->struct_mutex
to a local mutex. We could introduce a mutex for the sole purpose of
tracking the fence acquisition, except there is a little bit of overlap
with the fault tracking, so use the i915_ggtt.mutex as it covers both.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190822060914.2671-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gvt')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/aperture_gm.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gvt/aperture_gm.c b/drivers/gpu/drm/i915/gvt/aperture_gm.c index c3d19d88da40..5ff2437b2998 100644 --- a/drivers/gpu/drm/i915/gvt/aperture_gm.c +++ b/drivers/gpu/drm/i915/gvt/aperture_gm.c @@ -172,14 +172,14 @@ static void free_vgpu_fence(struct intel_vgpu *vgpu) intel_runtime_pm_get(&dev_priv->runtime_pm); - mutex_lock(&dev_priv->drm.struct_mutex); + mutex_lock(&dev_priv->ggtt.vm.mutex); _clear_vgpu_fence(vgpu); for (i = 0; i < vgpu_fence_sz(vgpu); i++) { reg = vgpu->fence.regs[i]; i915_unreserve_fence(reg); vgpu->fence.regs[i] = NULL; } - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); intel_runtime_pm_put_unchecked(&dev_priv->runtime_pm); } @@ -195,7 +195,7 @@ static int alloc_vgpu_fence(struct intel_vgpu *vgpu) intel_runtime_pm_get(rpm); /* Request fences from host */ - mutex_lock(&dev_priv->drm.struct_mutex); + mutex_lock(&dev_priv->ggtt.vm.mutex); for (i = 0; i < vgpu_fence_sz(vgpu); i++) { reg = i915_reserve_fence(dev_priv); @@ -207,7 +207,7 @@ static int alloc_vgpu_fence(struct intel_vgpu *vgpu) _clear_vgpu_fence(vgpu); - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); intel_runtime_pm_put_unchecked(rpm); return 0; out_free_fence: @@ -220,7 +220,7 @@ out_free_fence: i915_unreserve_fence(reg); vgpu->fence.regs[i] = NULL; } - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); intel_runtime_pm_put_unchecked(rpm); return -ENOSPC; } |