On 30/07/2019 14:30, Chris Wilson wrote:
Push the ring creation flags from the outer GEM context to the inner
intel_cotnext to avoid an unsightly back-reference from inside the
typo
backend.
No mention of the pointer overload trick.
Signed-off-by: Chris Wilson
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 21 +++--
.../gpu/drm/i915/gem/i915_gem_context_types.h | 3 ---
drivers/gpu/drm/i915/gt/intel_context.c | 1 +
drivers/gpu/drm/i915/gt/intel_context.h | 5
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 ++
drivers/gpu/drm/i915/gt/intel_lrc.c | 5 ++--
drivers/gpu/drm/i915/gt/intel_ringbuffer.c| 2 +-
drivers/gpu/drm/i915/gt/mock_engine.c | 9 ++--
drivers/gpu/drm/i915/i915_debugfs.c | 23 ---
9 files changed, 47 insertions(+), 24 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c
b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 1b3dc7258ef2..2e8cedce059f 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -434,8 +434,6 @@ __create_context(struct drm_i915_private *i915)
i915_gem_context_set_bannable(ctx);
i915_gem_context_set_recoverable(ctx);
- ctx->ring_size = 4 * PAGE_SIZE;
-
for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++)
ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES;
@@ -565,8 +563,15 @@ i915_gem_context_create_gvt(struct drm_device *dev)
i915_gem_context_set_closed(ctx); /* not user accessible */
i915_gem_context_clear_bannable(ctx);
i915_gem_context_set_force_single_submission(ctx);
- if (!USES_GUC_SUBMISSION(to_i915(dev)))
- ctx->ring_size = 512 * PAGE_SIZE; /* Max ring buffer size */
+ if (!USES_GUC_SUBMISSION(to_i915(dev))) {
+ const unsigned long ring_size = 512 * SZ_4K; /* max */
+ struct i915_gem_engines_iter it;
+ struct intel_context *ce;
+
+ for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it)
+ ce->ring = __intel_context_ring_size(ring_size);
+ i915_gem_context_unlock_engines(ctx);
+ }
GEM_BUG_ON(i915_gem_context_is_kernel(ctx));
out:
@@ -605,7 +610,6 @@ i915_gem_context_create_kernel(struct drm_i915_private
*i915, int prio)
i915_gem_context_clear_bannable(ctx);
ctx->sched.priority = I915_USER_PRIORITY(prio);
- ctx->ring_size = PAGE_SIZE;
GEM_BUG_ON(!i915_gem_context_is_kernel(ctx));
@@ -1589,6 +1593,7 @@ set_engines(struct i915_gem_context *ctx,
for (n = 0; n < num_engines; n++) {
struct i915_engine_class_instance ci;
struct intel_engine_cs *engine;
+ struct intel_context *ce;
if (copy_from_user(, >engines[n], sizeof(ci))) {
__free_engines(set.engines, n);
@@ -1611,11 +1616,13 @@ set_engines(struct i915_gem_context *ctx,
return -ENOENT;
}
- set.engines->engines[n] = intel_context_create(ctx, engine);
- if (!set.engines->engines[n]) {
+ ce = intel_context_create(ctx, engine);
+ if (!ce) {
__free_engines(set.engines, n);
return -ENOMEM;
}
+
+ set.engines->engines[n] = ce;
}
set.engines->num_engines = num_engines;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
index a02d98494078..260d59cc3de8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -169,9 +169,6 @@ struct i915_gem_context {
struct i915_sched_attr sched;
- /** ring_size: size for allocating the per-engine ring buffer */
- u32 ring_size;
-
/** guilty_count: How many times this context has caused a GPU hang. */
atomic_t guilty_count;
/**
diff --git a/drivers/gpu/drm/i915/gt/intel_context.c
b/drivers/gpu/drm/i915/gt/intel_context.c
index 34c8e37a73b8..db9236570ff5 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -214,6 +214,7 @@ intel_context_init(struct intel_context *ce,
ce->engine = engine;
ce->ops = engine->cops;
ce->sseu = engine->sseu;
+ ce->ring = __intel_context_ring_size(SZ_16K);
INIT_LIST_HEAD(>signal_link);
INIT_LIST_HEAD(>signals);
diff --git a/drivers/gpu/drm/i915/gt/intel_context.h
b/drivers/gpu/drm/i915/gt/intel_context.h
index 07f9924de48f..13f28dd316bc 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.h
+++ b/drivers/gpu/drm/i915/gt/intel_context.h
@@ -136,4 +136,9 @@ int intel_context_prepare_remote_request(struct
intel_context *ce,
struct i915_request *intel_context_create_request(struct intel_context
