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drm/i915: Make ring buffer size of a LRC context configurable

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This patch introduces an option for configuring the ring buffer size
of a LRC context after the context creation.

v9:
- Fix an identation issue. (Chris)

v8:
- Rename the data member in i915_gem_context. (Chris)

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-6-git-send-email-zhi.a.wang@intel.com
This commit is contained in:
Zhi Wang 2016-06-16 08:07:01 -04:00 committed by Chris Wilson
parent 0ad35fed61
commit bcd794c227
3 changed files with 3 additions and 1 deletions
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1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -880,6 +880,7 @@ struct i915_gem_context {
int pin_count;
bool initialised;
} engine[I915_NUM_ENGINES];
u32 ring_size;
struct list_head link;

1
drivers/gpu/drm/i915/i915_gem_context.c
View File

@ -295,6 +295,7 @@ __create_hw_context(struct drm_device *dev,
ctx->remap_slice = ALL_L3_SLICES(dev_priv);
ctx->hang_stats.ban_period_seconds = DRM_I915_CTX_BAN_PERIOD;
ctx->ring_size = 4 * PAGE_SIZE;
return ctx;

2
drivers/gpu/drm/i915/intel_lrc.c
View File

@ -2527,7 +2527,7 @@ static int execlists_context_deferred_alloc(struct i915_gem_context *ctx,
return PTR_ERR(ctx_obj);
}
ringbuf = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE);
ringbuf = intel_engine_create_ringbuffer(engine, ctx->ring_size);
if (IS_ERR(ringbuf)) {
ret = PTR_ERR(ringbuf);
goto error_deref_obj;