[PATCH 3/4] drm/i915: Pack params to engine->schedule() into a struct
Chris Wilson
chris at chris-wilson.co.uk
Tue Apr 17 23:54:48 UTC 2018
Today we only want to pass along the priority to engine->schedule(), but
in the future we want to have much more control over the various aspects
of the GPU during a context's execution, for example controlling the
frequency allowed. As we need an ever growing number of parameters for
scheduling, move those into a struct for convenience.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gvt/scheduler.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 3 ++-
drivers/gpu/drm/i915/i915_gem.c | 18 +++++++++--------
drivers/gpu/drm/i915/i915_gem_context.c | 8 ++++----
drivers/gpu/drm/i915/i915_gem_context.h | 13 +-----------
drivers/gpu/drm/i915/i915_gpu_error.c | 8 ++++----
drivers/gpu/drm/i915/i915_gpu_error.h | 5 +++--
drivers/gpu/drm/i915/i915_request.c | 4 ++--
drivers/gpu/drm/i915/i915_request.h | 1 +
drivers/gpu/drm/i915/i915_scheduler.h | 17 +++++++++++++++-
drivers/gpu/drm/i915/intel_display.c | 4 +++-
drivers/gpu/drm/i915/intel_engine_cs.c | 18 ++++++++++++++---
drivers/gpu/drm/i915/intel_guc_submission.c | 2 +-
drivers/gpu/drm/i915/intel_lrc.c | 20 ++++++++++---------
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 +++-
.../gpu/drm/i915/selftests/intel_hangcheck.c | 4 ++--
drivers/gpu/drm/i915/selftests/intel_lrc.c | 8 +++++---
17 files changed, 84 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 638abe84857c..f3d21849b0cb 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -1135,7 +1135,7 @@ int intel_vgpu_setup_submission(struct intel_vgpu *vgpu)
return PTR_ERR(s->shadow_ctx);
if (HAS_LOGICAL_RING_PREEMPTION(vgpu->gvt->dev_priv))
- s->shadow_ctx->priority = INT_MAX;
+ s->shadow_ctx->sched.priority = INT_MAX;
bitmap_zero(s->shadow_ctx_desc_updated, I915_NUM_ENGINES);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8e8667d9b084..028691108125 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -75,6 +75,7 @@
#include "i915_gem_timeline.h"
#include "i915_gpu_error.h"
#include "i915_request.h"
+#include "i915_scheduler.h"
#include "i915_vma.h"
#include "intel_gvt.h"
@@ -3158,7 +3159,7 @@ int i915_gem_object_wait(struct drm_i915_gem_object *obj,
struct intel_rps_client *rps);
int i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
unsigned int flags,
- int priority);
+ const struct i915_sched_attr *attr);
#define I915_PRIORITY_DISPLAY I915_PRIORITY_MAX
int __must_check
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4c9d2a6f7d28..795ca83aed7a 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -564,7 +564,8 @@ i915_gem_object_wait_reservation(struct reservation_object *resv,
return timeout;
}
-static void __fence_set_priority(struct dma_fence *fence, int prio)
+static void __fence_set_priority(struct dma_fence *fence,
+ const struct i915_sched_attr *attr)
{
struct i915_request *rq;
struct intel_engine_cs *engine;
@@ -577,11 +578,12 @@ static void __fence_set_priority(struct dma_fence *fence, int prio)
rcu_read_lock();
if (engine->schedule)
- engine->schedule(rq, prio);
+ engine->schedule(rq, attr);
rcu_read_unlock();
}
-static void fence_set_priority(struct dma_fence *fence, int prio)
+static void fence_set_priority(struct dma_fence *fence,
+ const struct i915_sched_attr *attr)
{
/* Recurse once into a fence-array */
if (dma_fence_is_array(fence)) {
@@ -589,16 +591,16 @@ static void fence_set_priority(struct dma_fence *fence, int prio)
int i;
for (i = 0; i < array->num_fences; i++)
- __fence_set_priority(array->fences[i], prio);
+ __fence_set_priority(array->fences[i], attr);
} else {
- __fence_set_priority(fence, prio);
+ __fence_set_priority(fence, attr);
}
}
int
i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
unsigned int flags,
- int prio)
+ const struct i915_sched_attr *attr)
{
struct dma_fence *excl;
@@ -613,7 +615,7 @@ i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
return ret;
for (i = 0; i < count; i++) {
- fence_set_priority(shared[i], prio);
+ fence_set_priority(shared[i], attr);
dma_fence_put(shared[i]);
}
@@ -623,7 +625,7 @@ i915_gem_object_wait_priority(struct drm_i915_gem_object *obj,
}
if (excl) {
- fence_set_priority(excl, prio);
+ fence_set_priority(excl, attr);
dma_fence_put(excl);
}
return 0;
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 9b3834a846e8..74435affe23f 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -281,7 +281,7 @@ __create_hw_context(struct drm_i915_private *dev_priv,
kref_init(&ctx->ref);
list_add_tail(&ctx->link, &dev_priv->contexts.list);
ctx->i915 = dev_priv;
- ctx->priority = I915_PRIORITY_NORMAL;
+ ctx->sched.priority = I915_PRIORITY_NORMAL;
INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
INIT_LIST_HEAD(&ctx->handles_list);
@@ -431,7 +431,7 @@ i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio)
return ctx;
i915_gem_context_clear_bannable(ctx);
- ctx->priority = prio;
+ ctx->sched.priority = prio;
ctx->ring_size = PAGE_SIZE;
GEM_BUG_ON(!i915_gem_context_is_kernel(ctx));
@@ -753,7 +753,7 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
args->value = i915_gem_context_is_bannable(ctx);
break;
case I915_CONTEXT_PARAM_PRIORITY:
- args->value = ctx->priority;
+ args->value = ctx->sched.priority;
break;
default:
ret = -EINVAL;
@@ -826,7 +826,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
!capable(CAP_SYS_NICE))
ret = -EPERM;
else
- ctx->priority = priority;
+ ctx->sched.priority = priority;
}
break;
diff --git a/drivers/gpu/drm/i915/i915_gem_context.h b/drivers/gpu/drm/i915/i915_gem_context.h
index 7854262ddfd9..b12a8a8c5af9 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.h
+++ b/drivers/gpu/drm/i915/i915_gem_context.h
@@ -137,18 +137,7 @@ struct i915_gem_context {
*/
u32 user_handle;
- /**
- * @priority: execution and service priority
- *
- * All clients are equal, but some are more equal than others!
- *
- * Requests from a context with a greater (more positive) value of
- * @priority will be executed before those with a lower @priority
- * value, forming a simple QoS.
- *
- * The &drm_i915_private.kernel_context is assigned the lowest priority.
- */
- int priority;
+ struct i915_sched_attr sched;
/** ggtt_offset_bias: placement restriction for context objects */
u32 ggtt_offset_bias;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 6b5b9b3ded02..671ffa37614e 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -411,7 +411,7 @@ static void error_print_request(struct drm_i915_error_state_buf *m,
err_printf(m, "%s pid %d, ban score %d, seqno %8x:%08x, prio %d, emitted %dms ago, head %08x, tail %08x\n",
prefix, erq->pid, erq->ban_score,
- erq->context, erq->seqno, erq->priority,
+ erq->context, erq->seqno, erq->sched_attr.priority,
jiffies_to_msecs(jiffies - erq->jiffies),
erq->head, erq->tail);
}
@@ -422,7 +422,7 @@ static void error_print_context(struct drm_i915_error_state_buf *m,
{
err_printf(m, "%s%s[%d] user_handle %d hw_id %d, prio %d, ban score %d%s guilty %d active %d\n",
header, ctx->comm, ctx->pid, ctx->handle, ctx->hw_id,
- ctx->priority, ctx->ban_score, bannable(ctx),
+ ctx->sched_attr.priority, ctx->ban_score, bannable(ctx),
ctx->guilty, ctx->active);
}
@@ -1278,7 +1278,7 @@ static void record_request(struct i915_request *request,
struct drm_i915_error_request *erq)
{
erq->context = request->ctx->hw_id;
- erq->priority = request->sched.priority;
+ erq->sched_attr = request->sched.attr;
erq->ban_score = atomic_read(&request->ctx->ban_score);
erq->seqno = request->global_seqno;
erq->jiffies = request->emitted_jiffies;
@@ -1372,7 +1372,7 @@ static void record_context(struct drm_i915_error_context *e,
e->handle = ctx->user_handle;
e->hw_id = ctx->hw_id;
- e->priority = ctx->priority;
+ e->sched_attr = ctx->sched;
e->ban_score = atomic_read(&ctx->ban_score);
e->bannable = i915_gem_context_is_bannable(ctx);
e->guilty = atomic_read(&ctx->guilty_count);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.h b/drivers/gpu/drm/i915/i915_gpu_error.h
index c05b6034d718..5d6fdcbc092c 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.h
+++ b/drivers/gpu/drm/i915/i915_gpu_error.h
@@ -20,6 +20,7 @@
#include "i915_gem.h"
#include "i915_gem_gtt.h"
#include "i915_params.h"
+#include "i915_scheduler.h"
struct drm_i915_private;
struct intel_overlay_error_state;
@@ -122,11 +123,11 @@ struct i915_gpu_state {
pid_t pid;
u32 handle;
u32 hw_id;
- int priority;
int ban_score;
int active;
int guilty;
bool bannable;
+ struct i915_sched_attr sched_attr;
} context;
struct drm_i915_error_object {
@@ -147,11 +148,11 @@ struct i915_gpu_state {
long jiffies;
pid_t pid;
u32 context;
- int priority;
int ban_score;
u32 seqno;
u32 head;
u32 tail;
+ struct i915_sched_attr sched_attr;
} *requests, execlist[EXECLIST_MAX_PORTS];
unsigned int num_ports;
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 0939c120b82c..c3a908436510 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -191,7 +191,7 @@ i915_sched_init(struct i915_sched *pt)
INIT_LIST_HEAD(&pt->signalers_list);
INIT_LIST_HEAD(&pt->waiters_list);
INIT_LIST_HEAD(&pt->link);
- pt->priority = I915_PRIORITY_INVALID;
+ pt->attr.priority = I915_PRIORITY_INVALID;
}
static int reset_all_global_seqno(struct drm_i915_private *i915, u32 seqno)
@@ -1062,7 +1062,7 @@ void __i915_request_add(struct i915_request *request, bool flush_caches)
*/
rcu_read_lock();
if (engine->schedule)
- engine->schedule(request, request->ctx->priority);
+ engine->schedule(request, &request->ctx->sched);
rcu_read_unlock();
local_bh_disable();
diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h
index 5d6619a245ba..701ee8c7325c 100644
--- a/drivers/gpu/drm/i915/i915_request.h
+++ b/drivers/gpu/drm/i915/i915_request.h
@@ -30,6 +30,7 @@
#include "i915_gem.h"
#include "i915_scheduler.h"
#include "i915_sw_fence.h"
+#include "i915_scheduler.h"
#include <uapi/drm/i915_drm.h>
diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h
index b34fca3ba17f..4cae1edeb40d 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.h
+++ b/drivers/gpu/drm/i915/i915_scheduler.h
@@ -19,6 +19,21 @@ enum {
I915_PRIORITY_INVALID = INT_MIN
};
+struct i915_sched_attr {
+ /**
+ * @priority: execution and service priority
+ *
+ * All clients are equal, but some are more equal than others!
+ *
+ * Requests from a context with a greater (more positive) value of
+ * @priority will be executed before those with a lower @priority
+ * value, forming a simple QoS.
+ *
+ * The &drm_i915_private.kernel_context is assigned the lowest priority.
+ */
+ int priority;
+};
+
/*
* "People assume that time is a strict progression of cause to effect, but
* actually, from a nonlinear, non-subjective viewpoint, it's more like a big
@@ -37,7 +52,7 @@ struct i915_sched {
struct list_head signalers_list; /* those before us, we depend upon */
struct list_head waiters_list; /* those after us, they depend upon us */
struct list_head link;
- int priority;
+ struct i915_sched_attr attr;
};
struct i915_dependency {
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 020900e08d42..7c34b8c854be 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12839,7 +12839,9 @@ intel_prepare_plane_fb(struct drm_plane *plane,
ret = intel_plane_pin_fb(to_intel_plane_state(new_state));
- i915_gem_object_wait_priority(obj, 0, I915_PRIORITY_DISPLAY);
+ i915_gem_object_wait_priority(obj, 0, &(struct i915_sched_attr){
+ .priority = I915_PRIORITY_DISPLAY,
+ });
mutex_unlock(&dev_priv->drm.struct_mutex);
i915_gem_object_unpin_pages(obj);
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index b542b1a4dddc..be608f7111f5 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1113,17 +1113,29 @@ unsigned int intel_engines_has_context_isolation(struct drm_i915_private *i915)
return which;
}
+static void print_sched_attr(struct drm_printer *m,
+ const struct drm_i915_private *i915,
+ const struct i915_sched_attr *attr)
+{
+ if (attr->priority == I915_PRIORITY_INVALID)
+ return;
+
+ drm_printf(m, "prio=%d", attr->priority);
+}
+
static void print_request(struct drm_printer *m,
struct i915_request *rq,
const char *prefix)
{
const char *name = rq->fence.ops->get_timeline_name(&rq->fence);
- drm_printf(m, "%s%x%s [%llx:%x] prio=%d @ %dms: %s\n", prefix,
+ drm_printf(m, "%s%x%s [%llx:%x] ",
+ prefix,
rq->global_seqno,
i915_request_completed(rq) ? "!" : "",
- rq->fence.context, rq->fence.seqno,
- rq->sched.priority,
+ rq->fence.context, rq->fence.seqno);
+ print_sched_attr(m, rq->i915, &rq->sched.attr);
+ drm_printf(m, " @ %dms: %s\n",
jiffies_to_msecs(jiffies - rq->emitted_jiffies),
name);
}
diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c
index 0755f5cae950..02da05875aa7 100644
--- a/drivers/gpu/drm/i915/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/intel_guc_submission.c
@@ -659,7 +659,7 @@ static void port_assign(struct execlist_port *port, struct i915_request *rq)
static inline int rq_prio(const struct i915_request *rq)
{
- return rq->sched.priority;
+ return rq->sched.attr.priority;
}
static inline int port_prio(const struct execlist_port *port)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 01f356cb3e25..6be8ccd18b72 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -177,7 +177,7 @@ static inline struct i915_priolist *to_priolist(struct rb_node *rb)
static inline int rq_prio(const struct i915_request *rq)
{
- return rq->sched.priority;
+ return rq->sched.attr.priority;
}
static inline bool need_preempt(const struct intel_engine_cs *engine,
@@ -1172,11 +1172,13 @@ sched_lock_engine(struct i915_sched *sched, struct intel_engine_cs *locked)
return engine;
}
-static void execlists_schedule(struct i915_request *request, int prio)
+static void execlists_schedule(struct i915_request *request,
+ const struct i915_sched_attr *attr)
{
struct intel_engine_cs *engine;
struct i915_dependency *dep, *p;
struct i915_dependency stack;
+ const int prio = attr->priority;
LIST_HEAD(dfs);
GEM_BUG_ON(prio == I915_PRIORITY_INVALID);
@@ -1184,7 +1186,7 @@ static void execlists_schedule(struct i915_request *request, int prio)
if (i915_request_completed(request))
return;
- if (prio <= READ_ONCE(request->sched.priority))
+ if (prio <= READ_ONCE(request->sched.attr.priority))
return;
/* Need BKL in order to use the temporary link inside i915_dependency */
@@ -1226,8 +1228,8 @@ static void execlists_schedule(struct i915_request *request, int prio)
if (i915_sched_signaled(p->signaler))
continue;
- GEM_BUG_ON(p->signaler->priority < sched->priority);
- if (prio > READ_ONCE(p->signaler->priority))
+ GEM_BUG_ON(p->signaler->attr.priority < sched->attr.priority);
+ if (prio > READ_ONCE(p->signaler->attr.priority))
list_move_tail(&p->dfs_link, &dfs);
}
}
@@ -1238,9 +1240,9 @@ static void execlists_schedule(struct i915_request *request, int prio)
* execlists_submit_request()), we can set our own priority and skip
* acquiring the engine locks.
*/
- if (request->sched.priority == I915_PRIORITY_INVALID) {
+ if (request->sched.attr.priority == I915_PRIORITY_INVALID) {
GEM_BUG_ON(!list_empty(&request->sched.link));
- request->sched.priority = prio;
+ request->sched.attr = *attr;
if (stack.dfs_link.next == stack.dfs_link.prev)
return;
__list_del_entry(&stack.dfs_link);
@@ -1257,10 +1259,10 @@ static void execlists_schedule(struct i915_request *request, int prio)
engine = sched_lock_engine(sched, engine);
- if (prio <= sched->priority)
+ if (prio <= sched->attr.priority)
continue;
- sched->priority = prio;
+ sched->attr.priority = prio;
if (!list_empty(&sched->link)) {
__list_del_entry(&sched->link);
queue_request(engine, sched, prio);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 717041640135..c5e27905b0e1 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -14,6 +14,7 @@
#include "intel_gpu_commands.h"
struct drm_printer;
+struct i915_sched_attr;
#define I915_CMD_HASH_ORDER 9
@@ -460,7 +461,8 @@ struct intel_engine_cs {
*
* Called under the struct_mutex.
*/
- void (*schedule)(struct i915_request *request, int priority);
+ void (*schedule)(struct i915_request *request,
+ const struct i915_sched_attr *attr);
/*
* Cancel all requests on the hardware, or queued for execution.
diff --git a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
index 24f913f26a7b..f7ee54e109ae 100644
--- a/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/selftests/intel_hangcheck.c
@@ -628,7 +628,7 @@ static int active_engine(void *data)
}
if (arg->flags & TEST_PRIORITY)
- ctx[idx]->priority =
+ ctx[idx]->sched.priority =
i915_prandom_u32_max_state(512, &prng);
rq[idx] = i915_request_get(new);
@@ -683,7 +683,7 @@ static int __igt_reset_engines(struct drm_i915_private *i915,
return err;
if (flags & TEST_PRIORITY)
- h.ctx->priority = 1024;
+ h.ctx->sched.priority = 1024;
}
for_each_engine(engine, i915, id) {
diff --git a/drivers/gpu/drm/i915/selftests/intel_lrc.c b/drivers/gpu/drm/i915/selftests/intel_lrc.c
index 0481e2e01146..ee7e22d18ff8 100644
--- a/drivers/gpu/drm/i915/selftests/intel_lrc.c
+++ b/drivers/gpu/drm/i915/selftests/intel_lrc.c
@@ -335,12 +335,12 @@ static int live_preempt(void *arg)
ctx_hi = kernel_context(i915);
if (!ctx_hi)
goto err_spin_lo;
- ctx_hi->priority = I915_CONTEXT_MAX_USER_PRIORITY;
+ ctx_hi->sched.priority = I915_CONTEXT_MAX_USER_PRIORITY;
ctx_lo = kernel_context(i915);
if (!ctx_lo)
goto err_ctx_hi;
- ctx_lo->priority = I915_CONTEXT_MIN_USER_PRIORITY;
+ ctx_lo->sched.priority = I915_CONTEXT_MIN_USER_PRIORITY;
for_each_engine(engine, i915, id) {
struct i915_request *rq;
@@ -407,6 +407,7 @@ static int live_late_preempt(void *arg)
struct i915_gem_context *ctx_hi, *ctx_lo;
struct spinner spin_hi, spin_lo;
struct intel_engine_cs *engine;
+ struct i915_sched_attr attr = {};
enum intel_engine_id id;
int err = -ENOMEM;
@@ -458,7 +459,8 @@ static int live_late_preempt(void *arg)
goto err_wedged;
}
- engine->schedule(rq, I915_PRIORITY_MAX);
+ attr.priority = I915_PRIORITY_MAX;
+ engine->schedule(rq, &attr);
if (!wait_for_spinner(&spin_hi, rq)) {
pr_err("High priority context failed to preempt the low priority context\n");
--
2.17.0
More information about the Intel-gfx-trybot
mailing list