diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-17 01:16:59 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-17 16:59:48 +0000 |
| commit | 85bedbf191e82aac0d7f05623bccfeccdcd91cea (patch) | |
| tree | 1c47a592c3479b96f443acec68997caaa8424399 /drivers/gpu/drm/i915/gt/intel_timeline_types.h | |
| parent | e14177f19739d74839eb496a27f5f5d958beaa5b (diff) | |
drm/i915/gt: Eliminate the trylock for reading a timeline's hwsp
As we stash a pointer to the HWSP cacheline on the request, when reading
it we only need confirm that the cacheline is still valid by checking
that the request and timeline are still intact.
v2: Protect hwsp_cachline with RCU
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217011659.3092130-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_timeline_types.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_timeline_types.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_timeline_types.h b/drivers/gpu/drm/i915/gt/intel_timeline_types.h index aaf15cbe1ce1..24d040f14e89 100644 --- a/drivers/gpu/drm/i915/gt/intel_timeline_types.h +++ b/drivers/gpu/drm/i915/gt/intel_timeline_types.h @@ -10,14 +10,15 @@ #include <linux/list.h> #include <linux/kref.h> #include <linux/mutex.h> +#include <linux/rcupdate.h> #include <linux/types.h> #include "i915_active_types.h" struct drm_i915_private; struct i915_vma; -struct intel_timeline_cacheline; struct i915_syncmap; +struct intel_timeline_hwsp; struct intel_timeline { u64 fence_context; @@ -87,4 +88,13 @@ struct intel_timeline { struct rcu_head rcu; }; +struct intel_timeline_cacheline { + struct i915_active active; + + struct intel_timeline_hwsp *hwsp; + void *vaddr; + + struct rcu_head rcu; +}; + #endif /* __I915_TIMELINE_TYPES_H__ */ |