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Message-Id: <20201103203352.399073636@linuxfoundation.org>
Date: Tue, 3 Nov 2020 21:32:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Luben Tuikov <luben.tuikov@....com>,
Christian König <christian.koenig@....com>,
Alex Deucher <alexander.deucher@....com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.9 078/391] drm/scheduler: Scheduler priority fixes (v2)
From: Luben Tuikov <luben.tuikov@....com>
[ Upstream commit e2d732fdb7a9e421720a644580cd6a9400f97f60 ]
Remove DRM_SCHED_PRIORITY_LOW, as it was used
in only one place.
Rename and separate by a line
DRM_SCHED_PRIORITY_MAX to DRM_SCHED_PRIORITY_COUNT
as it represents a (total) count of said
priorities and it is used as such in loops
throughout the code. (0-based indexing is the
the count number.)
Remove redundant word HIGH in priority names,
and rename *KERNEL* to *HIGH*, as it really
means that, high.
v2: Add back KERNEL and remove SW and HW,
in lieu of a single HIGH between NORMAL and KERNEL.
Signed-off-by: Luben Tuikov <luben.tuikov@....com>
Reviewed-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | 6 +++---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
drivers/gpu/drm/scheduler/sched_main.c | 4 ++--
include/drm/gpu_scheduler.h | 12 +++++++-----
8 files changed, 18 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index 8842c55d4490b..fc695126b6e75 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -46,7 +46,7 @@ const unsigned int amdgpu_ctx_num_entities[AMDGPU_HW_IP_NUM] = {
static int amdgpu_ctx_priority_permit(struct drm_file *filp,
enum drm_sched_priority priority)
{
- if (priority < 0 || priority >= DRM_SCHED_PRIORITY_MAX)
+ if (priority < 0 || priority >= DRM_SCHED_PRIORITY_COUNT)
return -EINVAL;
/* NORMAL and below are accessible by everyone */
@@ -65,7 +65,7 @@ static int amdgpu_ctx_priority_permit(struct drm_file *filp,
static enum gfx_pipe_priority amdgpu_ctx_sched_prio_to_compute_prio(enum drm_sched_priority prio)
{
switch (prio) {
- case DRM_SCHED_PRIORITY_HIGH_HW:
+ case DRM_SCHED_PRIORITY_HIGH:
case DRM_SCHED_PRIORITY_KERNEL:
return AMDGPU_GFX_PIPE_PRIO_HIGH;
default:
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 937029ad5271a..dcfe8a3b03ffb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -251,7 +251,7 @@ void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
int i;
/* Signal all jobs not yet scheduled */
- for (i = DRM_SCHED_PRIORITY_MAX - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
+ for (i = DRM_SCHED_PRIORITY_COUNT - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
struct drm_sched_rq *rq = &sched->sched_rq[i];
if (!rq)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 13ea8ebc421c6..6d4fc79bf84aa 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -267,7 +267,7 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
&ring->sched;
}
- for (i = 0; i < DRM_SCHED_PRIORITY_MAX; ++i)
+ for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_COUNT; ++i)
atomic_set(&ring->num_jobs[i], 0);
return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index da871d84b7424..7112137689db0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -243,7 +243,7 @@ struct amdgpu_ring {
bool has_compute_vm_bug;
bool no_scheduler;
- atomic_t num_jobs[DRM_SCHED_PRIORITY_MAX];
+ atomic_t num_jobs[DRM_SCHED_PRIORITY_COUNT];
struct mutex priority_mutex;
/* protected by priority_mutex */
int priority;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
index c799691dfa848..17661ede94885 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
@@ -36,14 +36,14 @@ enum drm_sched_priority amdgpu_to_sched_priority(int amdgpu_priority)
{
switch (amdgpu_priority) {
case AMDGPU_CTX_PRIORITY_VERY_HIGH:
- return DRM_SCHED_PRIORITY_HIGH_HW;
+ return DRM_SCHED_PRIORITY_HIGH;
case AMDGPU_CTX_PRIORITY_HIGH:
- return DRM_SCHED_PRIORITY_HIGH_SW;
+ return DRM_SCHED_PRIORITY_HIGH;
case AMDGPU_CTX_PRIORITY_NORMAL:
return DRM_SCHED_PRIORITY_NORMAL;
case AMDGPU_CTX_PRIORITY_LOW:
case AMDGPU_CTX_PRIORITY_VERY_LOW:
- return DRM_SCHED_PRIORITY_LOW;
+ return DRM_SCHED_PRIORITY_MIN;
case AMDGPU_CTX_PRIORITY_UNSET:
return DRM_SCHED_PRIORITY_UNSET;
default:
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 978bae7313980..b7fd0cdffce0e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2101,7 +2101,7 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable)
ring = adev->mman.buffer_funcs_ring;
sched = &ring->sched;
r = drm_sched_entity_init(&adev->mman.entity,
- DRM_SCHED_PRIORITY_KERNEL, &sched,
+ DRM_SCHED_PRIORITY_KERNEL, &sched,
1, NULL);
if (r) {
DRM_ERROR("Failed setting up TTM BO move entity (%d)\n",
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 96f763d888af5..9a0d77a680180 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -625,7 +625,7 @@ drm_sched_select_entity(struct drm_gpu_scheduler *sched)
return NULL;
/* Kernel run queue has higher priority than normal run queue*/
- for (i = DRM_SCHED_PRIORITY_MAX - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
+ for (i = DRM_SCHED_PRIORITY_COUNT - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
entity = drm_sched_rq_select_entity(&sched->sched_rq[i]);
if (entity)
break;
@@ -852,7 +852,7 @@ int drm_sched_init(struct drm_gpu_scheduler *sched,
sched->name = name;
sched->timeout = timeout;
sched->hang_limit = hang_limit;
- for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_MAX; i++)
+ for (i = DRM_SCHED_PRIORITY_MIN; i < DRM_SCHED_PRIORITY_COUNT; i++)
drm_sched_rq_init(sched, &sched->sched_rq[i]);
init_waitqueue_head(&sched->wake_up_worker);
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index b9780ae9dd26c..72dc3a95fbaad 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -33,14 +33,16 @@
struct drm_gpu_scheduler;
struct drm_sched_rq;
+/* These are often used as an (initial) index
+ * to an array, and as such should start at 0.
+ */
enum drm_sched_priority {
DRM_SCHED_PRIORITY_MIN,
- DRM_SCHED_PRIORITY_LOW = DRM_SCHED_PRIORITY_MIN,
DRM_SCHED_PRIORITY_NORMAL,
- DRM_SCHED_PRIORITY_HIGH_SW,
- DRM_SCHED_PRIORITY_HIGH_HW,
+ DRM_SCHED_PRIORITY_HIGH,
DRM_SCHED_PRIORITY_KERNEL,
- DRM_SCHED_PRIORITY_MAX,
+
+ DRM_SCHED_PRIORITY_COUNT,
DRM_SCHED_PRIORITY_INVALID = -1,
DRM_SCHED_PRIORITY_UNSET = -2
};
@@ -274,7 +276,7 @@ struct drm_gpu_scheduler {
uint32_t hw_submission_limit;
long timeout;
const char *name;
- struct drm_sched_rq sched_rq[DRM_SCHED_PRIORITY_MAX];
+ struct drm_sched_rq sched_rq[DRM_SCHED_PRIORITY_COUNT];
wait_queue_head_t wake_up_worker;
wait_queue_head_t job_scheduled;
atomic_t hw_rq_count;
--
2.27.0
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