[PATCH 8/8] drm/i915: Stop caching the "golden" renderstate
Chris Wilson
chris at chris-wilson.co.uk
Fri Nov 3 13:03:04 UTC 2017
As we now record the default HW state and so only emit the "golden"
renderstate once to prepare the HW, there is no advantage in keeping the
renderstate batch around as it will never be used again.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 1 -
drivers/gpu/drm/i915/i915_gem_render_state.c | 135 +++++++++------------------
drivers/gpu/drm/i915/i915_gem_render_state.h | 4 +-
drivers/gpu/drm/i915/intel_engine_cs.c | 9 +-
drivers/gpu/drm/i915/intel_lrc.c | 1 +
drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +-
drivers/gpu/drm/i915/intel_ringbuffer.h | 2 -
7 files changed, 51 insertions(+), 106 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 466ee055030b..71747131c444 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -67,7 +67,6 @@
#include "i915_gem_fence_reg.h"
#include "i915_gem_object.h"
#include "i915_gem_gtt.h"
-#include "i915_gem_render_state.h"
#include "i915_gem_request.h"
#include "i915_gem_timeline.h"
diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.c b/drivers/gpu/drm/i915/i915_gem_render_state.c
index 3703dc91eeda..69621d887975 100644
--- a/drivers/gpu/drm/i915/i915_gem_render_state.c
+++ b/drivers/gpu/drm/i915/i915_gem_render_state.c
@@ -26,10 +26,12 @@
*/
#include "i915_drv.h"
+#include "i915_gem_render_state.h"
#include "intel_renderstate.h"
struct intel_render_state {
const struct intel_renderstate_rodata *rodata;
+ struct drm_i915_gem_object *obj;
struct i915_vma *vma;
u32 batch_offset;
u32 batch_size;
@@ -74,17 +76,16 @@ static int render_state_setup(struct intel_render_state *so,
struct drm_i915_private *i915)
{
const struct intel_renderstate_rodata *rodata = so->rodata;
- struct drm_i915_gem_object *obj = so->vma->obj;
unsigned int i = 0, reloc_index = 0;
unsigned int needs_clflush;
u32 *d;
int ret;
- ret = i915_gem_obj_prepare_shmem_write(obj, &needs_clflush);
+ ret = i915_gem_obj_prepare_shmem_write(so->obj, &needs_clflush);
if (ret)
return ret;
- d = kmap_atomic(i915_gem_object_get_dirty_page(obj, 0));
+ d = kmap_atomic(i915_gem_object_get_dirty_page(so->obj, 0));
while (i < rodata->batch_items) {
u32 s = rodata->batch[i];
@@ -112,7 +113,7 @@ static int render_state_setup(struct intel_render_state *so,
goto err;
}
- so->batch_offset = so->vma->node.start;
+ so->batch_offset = i915_ggtt_offset(so->vma);
so->batch_size = rodata->batch_items * sizeof(u32);
while (i % CACHELINE_DWORDS)
@@ -160,9 +161,9 @@ static int render_state_setup(struct intel_render_state *so,
drm_clflush_virt_range(d, i * sizeof(u32));
kunmap_atomic(d);
- ret = i915_gem_object_set_to_gtt_domain(obj, false);
+ ret = i915_gem_object_set_to_gtt_domain(so->obj, false);
out:
- i915_gem_obj_finish_shmem_access(obj);
+ i915_gem_obj_finish_shmem_access(so->obj);
return ret;
err:
@@ -173,112 +174,64 @@ static int render_state_setup(struct intel_render_state *so,
#undef OUT_BATCH
-int i915_gem_render_state_init(struct intel_engine_cs *engine)
+int i915_gem_render_state_emit(struct drm_i915_gem_request *rq)
{
- struct intel_render_state *so;
- const struct intel_renderstate_rodata *rodata;
- struct drm_i915_gem_object *obj;
- int ret;
+ struct intel_engine_cs *engine = rq->engine;
+ struct intel_render_state so;
+ int err;
if (engine->id != RCS)
return 0;
- rodata = render_state_get_rodata(engine);
- if (!rodata)
+ so.rodata = render_state_get_rodata(engine);
+ if (!so.rodata)
return 0;
- if (rodata->batch_items * 4 > PAGE_SIZE)
+ if (so.rodata->batch_items * 4 > PAGE_SIZE)
return -EINVAL;
- so = kmalloc(sizeof(*so), GFP_KERNEL);
- if (!so)
- return -ENOMEM;
+ so.obj = i915_gem_object_create_internal(engine->i915, PAGE_SIZE);
+ if (IS_ERR(so.obj))
+ return PTR_ERR(so.obj);
- obj = i915_gem_object_create_internal(engine->i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- ret = PTR_ERR(obj);
- goto err_free;
- }
-
- so->vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL);
- if (IS_ERR(so->vma)) {
- ret = PTR_ERR(so->vma);
+ so.vma = i915_vma_instance(so.obj, &engine->i915->ggtt.base, NULL);
+ if (IS_ERR(so.vma)) {
+ err = PTR_ERR(so.vma);
goto err_obj;
}
- so->rodata = rodata;
- engine->render_state = so;
- return 0;
-
-err_obj:
- i915_gem_object_put(obj);
-err_free:
- kfree(so);
- return ret;
-}
-
-int i915_gem_render_state_emit(struct drm_i915_gem_request *req)
-{
- struct intel_render_state *so;
- int ret;
-
- lockdep_assert_held(&req->i915->drm.struct_mutex);
+ err = i915_vma_pin(so.vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
+ if (err)
+ goto err_vma;
- so = req->engine->render_state;
- if (!so)
- return 0;
-
- /* Recreate the page after shrinking */
- if (!i915_gem_object_has_pages(so->vma->obj))
- so->batch_offset = -1;
-
- ret = i915_vma_pin(so->vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
- if (ret)
- return ret;
-
- if (so->vma->node.start != so->batch_offset) {
- ret = render_state_setup(so, req->i915);
- if (ret)
- goto err_unpin;
- }
+ err = render_state_setup(&so, rq->i915);
+ if (err)
+ goto err_unpin;
- ret = req->engine->emit_flush(req, EMIT_INVALIDATE);
- if (ret)
+ err = engine->emit_flush(rq, EMIT_INVALIDATE);
+ if (err)
goto err_unpin;
- ret = req->engine->emit_bb_start(req,
- so->batch_offset, so->batch_size,
- I915_DISPATCH_SECURE);
- if (ret)
+ err = engine->emit_bb_start(rq,
+ so.batch_offset, so.batch_size,
+ I915_DISPATCH_SECURE);
+ if (err)
goto err_unpin;
- if (so->aux_size > 8) {
- ret = req->engine->emit_bb_start(req,
- so->aux_offset, so->aux_size,
- I915_DISPATCH_SECURE);
- if (ret)
+ if (so.aux_size > 8) {
+ err = engine->emit_bb_start(rq,
+ so.aux_offset, so.aux_size,
+ I915_DISPATCH_SECURE);
+ if (err)
goto err_unpin;
}
- i915_vma_move_to_active(so->vma, req, 0);
+ i915_vma_move_to_active(so.vma, rq, 0);
err_unpin:
- i915_vma_unpin(so->vma);
- return ret;
-}
-
-void i915_gem_render_state_fini(struct intel_engine_cs *engine)
-{
- struct intel_render_state *so;
- struct drm_i915_gem_object *obj;
-
- so = fetch_and_zero(&engine->render_state);
- if (!so)
- return;
-
- obj = so->vma->obj;
-
- i915_vma_close(so->vma);
- __i915_gem_object_release_unless_active(obj);
-
- kfree(so);
+ i915_vma_unpin(so.vma);
+err_vma:
+ i915_vma_close(so.vma);
+err_obj:
+ __i915_gem_object_release_unless_active(so.obj);
+ return err;
}
diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.h b/drivers/gpu/drm/i915/i915_gem_render_state.h
index 87481845799d..86369520482e 100644
--- a/drivers/gpu/drm/i915/i915_gem_render_state.h
+++ b/drivers/gpu/drm/i915/i915_gem_render_state.h
@@ -26,8 +26,6 @@
struct drm_i915_gem_request;
-int i915_gem_render_state_init(struct intel_engine_cs *engine);
-int i915_gem_render_state_emit(struct drm_i915_gem_request *req);
-void i915_gem_render_state_fini(struct intel_engine_cs *engine);
+int i915_gem_render_state_emit(struct drm_i915_gem_request *rq);
#endif /* _I915_GEM_RENDER_STATE_H_ */
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index ded0deb88027..63211d81c739 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -633,21 +633,15 @@ int intel_engine_init_common(struct intel_engine_cs *engine)
if (ret)
goto err_unpin_preempt;
- ret = i915_gem_render_state_init(engine);
- if (ret)
- goto err_breadcrumbs;
-
if (HWS_NEEDS_PHYSICAL(engine->i915))
ret = init_phys_status_page(engine);
else
ret = init_status_page(engine);
if (ret)
- goto err_rs_fini;
+ goto err_breadcrumbs;
return 0;
-err_rs_fini:
- i915_gem_render_state_fini(engine);
err_breadcrumbs:
intel_engine_fini_breadcrumbs(engine);
err_unpin_preempt:
@@ -674,7 +668,6 @@ void intel_engine_cleanup_common(struct intel_engine_cs *engine)
else
cleanup_status_page(engine);
- i915_gem_render_state_fini(engine);
intel_engine_fini_breadcrumbs(engine);
intel_engine_cleanup_cmd_parser(engine);
i915_gem_batch_pool_fini(&engine->batch_pool);
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index f96225a6a369..9a2cf6938f55 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -136,6 +136,7 @@
#include <drm/drmP.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
+#include "i915_gem_render_state.h"
#include "intel_mocs.h"
#define RING_EXECLIST_QFULL (1 << 0x2)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 464dc58af27b..3321b801e77d 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -28,9 +28,12 @@
*/
#include <linux/log2.h>
+
#include <drm/drmP.h>
-#include "i915_drv.h"
#include <drm/i915_drm.h>
+
+#include "i915_drv.h"
+#include "i915_gem_render_state.h"
#include "i915_trace.h"
#include "intel_drv.h"
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 1d752b9a3065..0ada71ab09ff 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -165,7 +165,6 @@ struct i915_ctx_workarounds {
};
struct drm_i915_gem_request;
-struct intel_render_state;
/*
* Engine IDs definitions.
@@ -304,7 +303,6 @@ struct intel_engine_cs {
struct intel_timeline *timeline;
struct drm_i915_gem_object *default_state;
- struct intel_render_state *render_state;
atomic_t irq_count;
unsigned long irq_posted;
--
2.15.0
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