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drm/i915: struct_mutex is not required for allocating the framebuffer

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We do not need the BKL struct_mutex in order to allocate a GEM object,
nor to create the framebuffer, so resist the temptation to take the BKL
willy nilly. As this changes the locking contract around internal API
calls, the patch is a little larger than a plain removal of a pair of
mutex_lock/unlock.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170215105919.7347-2-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Chris Wilson
2017-02-15 10:59:18 +00:00
parent 70001cd256
commit 24dbf51a55
3 changed files with 59 additions and 78 deletions
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7
drivers/gpu/drm/i915/intel_drv.h
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@@ -1233,7 +1233,7 @@ void intel_ddi_clock_get(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config);
void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
unsigned int intel_fb_align_height(struct drm_device *dev,
unsigned int intel_fb_align_height(struct drm_i915_private *dev_priv,
unsigned int height,
uint32_t pixel_format,
uint64_t fb_format_modifier);
@@ -1341,9 +1341,8 @@ struct i915_vma *
intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int rotation);
void intel_unpin_fb_vma(struct i915_vma *vma);
struct drm_framebuffer *
__intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj);
intel_framebuffer_create(struct drm_i915_gem_object *obj,
struct drm_mode_fb_cmd2 *mode_cmd);
void intel_finish_page_flip_cs(struct drm_i915_private *dev_priv, int pipe);
void intel_finish_page_flip_mmio(struct drm_i915_private *dev_priv, int pipe);
void intel_check_page_flip(struct drm_i915_private *dev_priv, int pipe);