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| author | Chris Wilson | 2017-06-20 13:05:46 +0200 |
|---|---|---|
| committer | Chris Wilson | 2017-06-20 18:13:47 +0200 |
| commit | 5f09a9c8ab6b16eefbcf81635330d68481af1edc (patch) | |
| tree | e374d562ed64abf863cb5d9986f784edc8bde41a /drivers/gpu/drm/i915/i915_gem_context.h | |
| parent | drm/i915: Group all the global context information together (diff) | |
| download | kernel-qcow2-linux-5f09a9c8ab6b16eefbcf81635330d68481af1edc.tar.gz kernel-qcow2-linux-5f09a9c8ab6b16eefbcf81635330d68481af1edc.tar.xz kernel-qcow2-linux-5f09a9c8ab6b16eefbcf81635330d68481af1edc.zip | |
drm/i915: Allow contexts to be unreferenced locklessly
If we move the actual cleanup of the context to a worker, we can allow
the final free to be called from any context and avoid undue latency in
the caller.
v2: Negotiate handling the delayed contexts free by flushing the
workqueue before calling i915_gem_context_fini() and performing the final
free of the kernel context directly
v3: Flush deferred frees before new context allocations
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170620110547.15947-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_context.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.h b/drivers/gpu/drm/i915/i915_gem_context.h index 808f878db812..61146f4aa168 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.h +++ b/drivers/gpu/drm/i915/i915_gem_context.h @@ -86,6 +86,7 @@ struct i915_gem_context { /** link: place with &drm_i915_private.context_list */ struct list_head link; + struct llist_node free_link; /** * @ref: reference count @@ -284,7 +285,7 @@ void i915_gem_context_close(struct drm_file *file); int i915_switch_context(struct drm_i915_gem_request *req); int i915_gem_switch_to_kernel_context(struct drm_i915_private *dev_priv); -void i915_gem_context_free(struct kref *ctx_ref); +void i915_gem_context_release(struct kref *ctx_ref); struct i915_gem_context * i915_gem_context_create_gvt(struct drm_device *dev); @@ -299,4 +300,16 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data, struct drm_file *file); +static inline struct i915_gem_context * +i915_gem_context_get(struct i915_gem_context *ctx) +{ + kref_get(&ctx->ref); + return ctx; +} + +static inline void i915_gem_context_put(struct i915_gem_context *ctx) +{ + kref_put(&ctx->ref, i915_gem_context_release); +} + #endif /* !__I915_GEM_CONTEXT_H__ */ |