This patch introduces an option for configuring ring buffer size during
context creation. If no ring buffer size is specified, the default size
(4 * PAGE_SIZE) will be used.
Signed-off-by: Zhi Wang <zhi.a.wang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_lrc.c | 8 ++++++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 48f4d6e..4ac88b2 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -883,6 +883,7 @@ struct intel_context {
uint32_t *lrc_reg_state;
bool initialised;
bool skip_init_context;
+ u32 ring_buffer_size;
} engine[I915_NUM_ENGINES];
struct list_head link;
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 08eeaf3..3f04784 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -2502,7 +2502,7 @@ static int execlists_context_deferred_alloc(struct intel_context *ctx,
struct intel_engine_cs *engine)
{
struct drm_i915_gem_object *ctx_obj;
- uint32_t context_size;
+ uint32_t context_size, ring_buffer_size;
struct intel_ringbuffer *ringbuf;
int ret;
@@ -2520,7 +2520,11 @@ static int execlists_context_deferred_alloc(struct intel_context *ctx,
return PTR_ERR(ctx_obj);
}
- ringbuf = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE);
+ ring_buffer_size = ctx->engine[engine->id].ring_buffer_size;
+ if (!ring_buffer_size)
+ ring_buffer_size = 4 * PAGE_SIZE;
+
+ ringbuf = intel_engine_create_ringbuffer(engine, ring_buffer_size);
if (IS_ERR(ringbuf)) {
ret = PTR_ERR(ringbuf);
goto error_deref_obj;
--
1.9.1
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