[PATCH 22/58] drm/i915: Move scheduler queue
Chris Wilson
chris at chris-wilson.co.uk
Sun Jan 31 23:53:16 UTC 2021
Extract the scheduling queue from "execlists" into the per-engine
scheduling structs, for reuse by other backends.
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
.../gpu/drm/i915/gem/i915_gem_context_types.h | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_wait.c | 1 +
drivers/gpu/drm/i915/gt/intel_engine.h | 33 ++----
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 40 ++-----
.../gpu/drm/i915/gt/intel_engine_heartbeat.c | 2 +-
drivers/gpu/drm/i915/gt/intel_engine_pm.c | 5 +-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 19 ---
.../drm/i915/gt/intel_execlists_submission.c | 111 ++++++++----------
drivers/gpu/drm/i915/gt/intel_gt_irq.c | 2 +-
drivers/gpu/drm/i915/gt/intel_gt_requests.c | 2 +-
drivers/gpu/drm/i915/gt/selftest_engine_pm.c | 2 +-
drivers/gpu/drm/i915/gt/selftest_execlists.c | 49 ++++----
drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/selftest_lrc.c | 13 +-
drivers/gpu/drm/i915/gt/selftest_reset.c | 3 +-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 34 ++----
drivers/gpu/drm/i915/i915_drv.h | 1 -
drivers/gpu/drm/i915/i915_request.c | 2 +-
drivers/gpu/drm/i915/i915_request.h | 2 +-
drivers/gpu/drm/i915/i915_scheduler.c | 102 ++++++++++++----
drivers/gpu/drm/i915/i915_scheduler.h | 49 ++++++++
drivers/gpu/drm/i915/i915_scheduler_types.h | 23 ++++
drivers/gpu/drm/i915/selftests/i915_request.c | 10 +-
.../gpu/drm/i915/selftests/i915_scheduler.c | 37 +++---
drivers/gpu/drm/i915/selftests/igt_spinner.c | 2 +-
25 files changed, 302 insertions(+), 247 deletions(-)
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 085f6a3735e8..d5bc75508048 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h
@@ -19,7 +19,7 @@
#include "gt/intel_context_types.h"
-#include "i915_scheduler.h"
+#include "i915_scheduler_types.h"
#include "i915_sw_fence.h"
struct pid;
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_wait.c b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
index d79bf16083bd..4d1897c347b9 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_wait.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_wait.c
@@ -13,6 +13,7 @@
#include "dma_resv_utils.h"
#include "i915_gem_ioctls.h"
#include "i915_gem_object.h"
+#include "i915_scheduler.h"
static long
i915_gem_object_wait_fence(struct dma_fence *fence,
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index cc2df80eb449..52bba16c62e8 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -12,6 +12,7 @@
#include "i915_pmu.h"
#include "i915_reg.h"
#include "i915_request.h"
+#include "i915_scheduler.h"
#include "i915_selftest.h"
#include "intel_engine_types.h"
#include "intel_gt_types.h"
@@ -123,20 +124,6 @@ execlists_active(const struct intel_engine_execlists *execlists)
return active;
}
-static inline void
-execlists_active_lock_bh(struct intel_engine_execlists *execlists)
-{
- local_bh_disable(); /* prevent local softirq and lock recursion */
- tasklet_lock(&execlists->tasklet);
-}
-
-static inline void
-execlists_active_unlock_bh(struct intel_engine_execlists *execlists)
-{
- tasklet_unlock(&execlists->tasklet);
- local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
-}
-
static inline u32
intel_read_status_page(const struct intel_engine_cs *engine, int reg)
{
@@ -231,12 +218,6 @@ static inline void __intel_engine_reset(struct intel_engine_cs *engine,
bool intel_engines_are_idle(struct intel_gt *gt);
bool intel_engine_is_idle(struct intel_engine_cs *engine);
-void __intel_engine_flush_submission(struct intel_engine_cs *engine, bool sync);
-static inline void intel_engine_flush_submission(struct intel_engine_cs *engine)
-{
- __intel_engine_flush_submission(engine, true);
-}
-
void intel_engines_reset_default_submission(struct intel_gt *gt);
bool intel_engine_can_store_dword(struct intel_engine_cs *engine);
@@ -283,4 +264,16 @@ intel_engine_has_heartbeat(const struct intel_engine_cs *engine)
return READ_ONCE(engine->props.heartbeat_interval_ms);
}
+static inline void
+intel_engine_kick_scheduler(struct intel_engine_cs *engine)
+{
+ i915_sched_kick(intel_engine_get_scheduler(engine));
+}
+
+static inline void
+intel_engine_flush_scheduler(struct intel_engine_cs *engine)
+{
+ i915_sched_flush(intel_engine_get_scheduler(engine));
+}
+
#endif /* _INTEL_RINGBUFFER_H_ */
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index d7ff84d92936..b5b957283f2c 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -574,7 +574,6 @@ void intel_engine_init_execlists(struct intel_engine_cs *engine)
memset(execlists->inflight, 0, sizeof(execlists->inflight));
execlists->queue_priority_hint = INT_MIN;
- execlists->queue = RB_ROOT_CACHED;
}
static void cleanup_status_page(struct intel_engine_cs *engine)
@@ -911,8 +910,7 @@ int intel_engines_init(struct intel_gt *gt)
*/
void intel_engine_cleanup_common(struct intel_engine_cs *engine)
{
- GEM_BUG_ON(!list_empty(&engine->sched.requests));
- tasklet_kill(&engine->execlists.tasklet); /* flush the callback */
+ i915_sched_fini(intel_engine_get_scheduler(engine));
intel_breadcrumbs_free(engine->breadcrumbs);
@@ -1195,27 +1193,6 @@ static bool ring_is_idle(struct intel_engine_cs *engine)
return idle;
}
-void __intel_engine_flush_submission(struct intel_engine_cs *engine, bool sync)
-{
- struct tasklet_struct *t = &engine->execlists.tasklet;
-
- if (!t->callback)
- return;
-
- local_bh_disable();
- if (tasklet_trylock(t)) {
- /* Must wait for any GPU reset in progress. */
- if (__tasklet_is_enabled(t))
- t->callback(t);
- tasklet_unlock(t);
- }
- local_bh_enable();
-
- /* Synchronise and wait for the tasklet on another CPU */
- if (sync)
- tasklet_unlock_wait(t);
-}
-
/**
* intel_engine_is_idle() - Report if the engine has finished process all work
* @engine: the intel_engine_cs
@@ -1225,6 +1202,8 @@ void __intel_engine_flush_submission(struct intel_engine_cs *engine, bool sync)
*/
bool intel_engine_is_idle(struct intel_engine_cs *engine)
{
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
+
/* More white lies, if wedged, hw state is inconsistent */
if (intel_gt_is_wedged(engine->gt))
return true;
@@ -1234,10 +1213,10 @@ bool intel_engine_is_idle(struct intel_engine_cs *engine)
/* Waiting to drain ELSP? */
synchronize_hardirq(engine->i915->drm.pdev->irq);
- intel_engine_flush_submission(engine);
+ i915_sched_flush(se);
/* ELSP is empty, but there are ready requests? E.g. after reset */
- if (!RB_EMPTY_ROOT(&engine->execlists.queue.rb_root))
+ if (!i915_sched_is_idle(se))
return false;
/* Ring stopped? */
@@ -1449,6 +1428,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine,
if (intel_engine_uses_guc(engine)) {
/* nothing to print yet */
} else if (HAS_EXECLISTS(dev_priv)) {
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
struct i915_request * const *port, *rq;
const u32 *hws =
&engine->status_page.addr[I915_HWS_CSB_BUF0_INDEX];
@@ -1458,8 +1438,8 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine,
drm_printf(m, "\tExeclist tasklet queued? %s (%s), preempt? %s, timeslice? %s\n",
yesno(test_bit(TASKLET_STATE_SCHED,
- &engine->execlists.tasklet.state)),
- enableddisabled(!atomic_read(&engine->execlists.tasklet.count)),
+ &se->tasklet.state)),
+ enableddisabled(!atomic_read(&se->tasklet.count)),
repr_timer(&engine->execlists.preempt),
repr_timer(&engine->execlists.timer));
@@ -1483,7 +1463,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine,
idx, hws[idx * 2], hws[idx * 2 + 1]);
}
- execlists_active_lock_bh(execlists);
+ i915_sched_lock_bh(se);
rcu_read_lock();
for (port = execlists->active; (rq = *port); port++) {
char hdr[160];
@@ -1514,7 +1494,7 @@ static void intel_engine_print_registers(struct intel_engine_cs *engine,
i915_request_show(m, rq, hdr, 0);
}
rcu_read_unlock();
- execlists_active_unlock_bh(execlists);
+ i915_sched_unlock_bh(se);
} else if (INTEL_GEN(dev_priv) > 6) {
drm_printf(m, "\tPP_DIR_BASE: 0x%08x\n",
ENGINE_READ(engine, RING_PP_DIR_BASE));
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
index 48a91c0dbad6..fce86bd4b47f 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
@@ -88,7 +88,7 @@ static void heartbeat(struct work_struct *wrk)
unsigned long serial;
/* Just in case everything has gone horribly wrong, give it a kick */
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
rq = engine->heartbeat.systole;
if (rq && i915_request_completed(rq)) {
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
index 6372d7826bc9..27d9d17b35cb 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
@@ -4,6 +4,7 @@
*/
#include "i915_drv.h"
+#include "i915_scheduler.h"
#include "intel_breadcrumbs.h"
#include "intel_context.h"
@@ -52,7 +53,7 @@ static int __engine_unpark(struct intel_wakeref *wf)
/* Flush all pending HW writes before we touch the context */
while (unlikely(intel_context_inflight(ce)))
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
/* First poison the image to verify we never fully trust it */
dbg_poison_ce(ce);
@@ -276,7 +277,7 @@ static int __engine_park(struct intel_wakeref *wf)
if (engine->park)
engine->park(engine);
- engine->execlists.no_priolist = false;
+ i915_sched_park(intel_engine_get_scheduler(engine));
/* While gt calls i915_vma_parked(), we have to break the lock cycle */
intel_gt_pm_put_async(engine->gt);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index 0936b0699cbb..97fe5e395a85 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -138,11 +138,6 @@ struct st_preempt_hang {
* driver and the hardware state for execlist mode of submission.
*/
struct intel_engine_execlists {
- /**
- * @tasklet: softirq tasklet for bottom handler
- */
- struct tasklet_struct tasklet;
-
/**
* @timer: kick the current context if its timeslice expires
*/
@@ -153,11 +148,6 @@ struct intel_engine_execlists {
*/
struct timer_list preempt;
- /**
- * @default_priolist: priority list for I915_PRIORITY_NORMAL
- */
- struct i915_priolist default_priolist;
-
/**
* @ccid: identifier for contexts submitted to this engine
*/
@@ -192,11 +182,6 @@ struct intel_engine_execlists {
*/
u32 reset_ccid;
- /**
- * @no_priolist: priority lists disabled
- */
- bool no_priolist;
-
/**
* @submit_reg: gen-specific execlist submission register
* set to the ExecList Submission Port (elsp) register pre-Gen11 and to
@@ -252,10 +237,6 @@ struct intel_engine_execlists {
*/
int queue_priority_hint;
- /**
- * @queue: queue of requests, in priority lists
- */
- struct rb_root_cached queue;
struct rb_root_cached virtual;
/**
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index dd1429a476d5..9388144097b6 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -272,11 +272,11 @@ static int effective_prio(const struct i915_request *rq)
return prio;
}
-static int queue_prio(const struct intel_engine_execlists *execlists)
+static int queue_prio(const struct i915_sched *se)
{
struct rb_node *rb;
- rb = rb_first_cached(&execlists->queue);
+ rb = rb_first_cached(&se->queue);
if (!rb)
return INT_MIN;
@@ -340,7 +340,7 @@ static bool need_preempt(const struct intel_engine_cs *engine,
* context, it's priority would not exceed ELSP[0] aka last_prio.
*/
return max(virtual_prio(&engine->execlists),
- queue_prio(&engine->execlists)) > last_prio;
+ queue_prio(se)) > last_prio;
}
__maybe_unused static bool
@@ -514,7 +514,7 @@ static void kick_siblings(struct i915_request *rq, struct intel_context *ce)
resubmit_virtual_request(rq, ve);
if (READ_ONCE(ve->request))
- tasklet_hi_schedule(&ve->base.execlists.tasklet);
+ intel_engine_kick_scheduler(&ve->base);
}
static void __execlists_schedule_out(struct i915_request * const rq,
@@ -680,12 +680,6 @@ trace_ports(const struct intel_engine_execlists *execlists,
dump_port(p1, sizeof(p1), ", ", ports[1]));
}
-static bool
-reset_in_progress(const struct intel_engine_execlists *execlists)
-{
- return unlikely(!__tasklet_is_enabled(&execlists->tasklet));
-}
-
static __maybe_unused noinline bool
assert_pending_valid(const struct intel_engine_execlists *execlists,
const char *msg)
@@ -700,7 +694,7 @@ assert_pending_valid(const struct intel_engine_execlists *execlists,
trace_ports(execlists, msg, execlists->pending);
/* We may be messing around with the lists during reset, lalala */
- if (reset_in_progress(execlists))
+ if (i915_sched_is_disabled(intel_engine_get_scheduler(engine)))
return true;
if (!execlists->pending[0]) {
@@ -1033,13 +1027,13 @@ static bool needs_timeslice(const struct intel_engine_cs *engine,
return false;
/* If ELSP[1] is occupied, always check to see if worth slicing */
- if (!list_is_last_rcu(&rq->sched.link, &se->requests)) {
+ if (!i915_sched_is_last_request(se, rq)) {
ENGINE_TRACE(engine, "timeslice required for second inflight context\n");
return true;
}
/* Otherwise, ELSP[0] is by itself, but may be waiting in the queue */
- if (!RB_EMPTY_ROOT(&engine->execlists.queue.rb_root)) {
+ if (!i915_sched_is_idle(se)) {
ENGINE_TRACE(engine, "timeslice required for queue\n");
return true;
}
@@ -1087,7 +1081,7 @@ static void start_timeslice(struct intel_engine_cs *engine)
* its timeslice, so recheck.
*/
if (!timer_pending(&el->timer))
- tasklet_hi_schedule(&el->tasklet);
+ intel_engine_kick_scheduler(engine);
return;
}
@@ -1285,7 +1279,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
GEM_BUG_ON(rq->engine != &ve->base);
GEM_BUG_ON(rq->context != &ve->context);
- if (unlikely(rq_prio(rq) < queue_prio(execlists))) {
+ if (unlikely(rq_prio(rq) < queue_prio(se))) {
spin_unlock(&ve->base.sched.lock);
break;
}
@@ -1351,7 +1345,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
break;
}
- while ((rb = rb_first_cached(&execlists->queue))) {
+ while ((rb = rb_first_cached(&se->queue))) {
struct i915_priolist *p = to_priolist(rb);
struct i915_request *rq, *rn;
@@ -1430,7 +1424,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
}
}
- rb_erase_cached(&p->node, &execlists->queue);
+ rb_erase_cached(&p->node, &se->queue);
i915_priolist_free(p);
}
done:
@@ -1452,7 +1446,7 @@ static void execlists_dequeue(struct intel_engine_cs *engine)
* request triggering preemption on the next dequeue (or subsequent
* interrupt for secondary ports).
*/
- execlists->queue_priority_hint = queue_prio(execlists);
+ execlists->queue_priority_hint = queue_prio(se);
spin_unlock(&se->lock);
/*
@@ -1663,14 +1657,6 @@ process_csb(struct intel_engine_cs *engine, struct i915_request **inactive)
struct i915_request **prev;
u8 head, tail;
- /*
- * As we modify our execlists state tracking we require exclusive
- * access. Either we are inside the tasklet, or the tasklet is disabled
- * and we assume that is only inside the reset paths and so serialised.
- */
- GEM_BUG_ON(!tasklet_is_locked(&execlists->tasklet) &&
- !reset_in_progress(execlists));
-
/*
* Note that csb_write, csb_status may be either in HWSP or mmio.
* When reading from the csb_write mmio register, we have to be
@@ -2066,6 +2052,7 @@ static void execlists_capture(struct intel_engine_cs *engine)
static noinline void execlists_reset(struct intel_engine_cs *engine)
{
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
const unsigned int bit = I915_RESET_ENGINE + engine->id;
unsigned long *lock = &engine->gt->reset.flags;
unsigned long eir = fetch_and_zero(&engine->execlists.error_interrupt);
@@ -2089,13 +2076,13 @@ static noinline void execlists_reset(struct intel_engine_cs *engine)
ENGINE_TRACE(engine, "reset for %s\n", msg);
/* Mark this tasklet as disabled to avoid waiting for it to complete */
- tasklet_disable_nosync(&engine->execlists.tasklet);
+ tasklet_disable_nosync(&se->tasklet);
ring_set_paused(engine, 1); /* Freeze the current request in place */
execlists_capture(engine);
intel_engine_reset(engine, msg);
- tasklet_enable(&engine->execlists.tasklet);
+ tasklet_enable(&se->tasklet);
clear_and_wake_up_bit(bit, lock);
}
@@ -2119,10 +2106,16 @@ static bool preempt_timeout(const struct intel_engine_cs *const engine)
static void execlists_submission_tasklet(struct tasklet_struct *t)
{
struct intel_engine_cs * const engine =
- from_tasklet(engine, t, execlists.tasklet);
+ from_tasklet(engine, t, sched.tasklet);
struct i915_request *post[2 * EXECLIST_MAX_PORTS];
struct i915_request **inactive;
+ /*
+ * As we modify our execlists state tracking we require exclusive
+ * access. Either we are inside the tasklet, or the tasklet is disabled
+ * and we assume that is only inside the reset paths and so serialised.
+ */
+
rcu_read_lock();
inactive = process_csb(engine, post);
GEM_BUG_ON(inactive - post > ARRAY_SIZE(post));
@@ -2146,8 +2139,10 @@ static void execlists_submission_tasklet(struct tasklet_struct *t)
static void __execlists_kick(struct intel_engine_execlists *execlists)
{
- /* Kick the tasklet for some interrupt coalescing and reset handling */
- tasklet_hi_schedule(&execlists->tasklet);
+ struct intel_engine_cs *engine =
+ container_of(execlists, typeof(*engine), execlists);
+
+ intel_engine_kick_scheduler(engine);
}
#define execlists_kick(t, member) \
@@ -2470,10 +2465,7 @@ static int execlists_resume(struct intel_engine_cs *engine)
static void execlists_reset_prepare(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
-
- ENGINE_TRACE(engine, "depth<-%d\n",
- atomic_read(&execlists->tasklet.count));
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
/*
* Prevent request submission to the hardware until we have
@@ -2484,8 +2476,7 @@ static void execlists_reset_prepare(struct intel_engine_cs *engine)
* Turning off the execlists->tasklet until the reset is over
* prevents the race.
*/
- __tasklet_disable_sync_once(&execlists->tasklet);
- GEM_BUG_ON(!reset_in_progress(execlists));
+ i915_sched_disable(se);
/*
* We stop engines, otherwise we might get failed reset and a
@@ -2637,7 +2628,7 @@ static void execlists_reset_rewind(struct intel_engine_cs *engine, bool stalled)
static void nop_submission_tasklet(struct tasklet_struct *t)
{
struct intel_engine_cs * const engine =
- from_tasklet(engine, t, execlists.tasklet);
+ from_tasklet(engine, t, sched.tasklet);
/* The driver is wedged; don't process any more events. */
WRITE_ONCE(engine->execlists.queue_priority_hint, INT_MIN);
@@ -2678,7 +2669,7 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine)
intel_engine_signal_breadcrumbs(engine);
/* Flush the queued requests to the timeline list (for retiring). */
- while ((rb = rb_first_cached(&execlists->queue))) {
+ while ((rb = rb_first_cached(&se->queue))) {
struct i915_priolist *p = to_priolist(rb);
priolist_for_each_request_consume(rq, rn, p) {
@@ -2688,9 +2679,10 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine)
}
}
- rb_erase_cached(&p->node, &execlists->queue);
+ rb_erase_cached(&p->node, &se->queue);
i915_priolist_free(p);
}
+ GEM_BUG_ON(!i915_sched_is_idle(se));
/* On-hold requests will be flushed to timeline upon their release */
list_for_each_entry(rq, &se->hold, sched.link)
@@ -2722,10 +2714,10 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine)
/* Remaining _unready_ requests will be nop'ed when submitted */
execlists->queue_priority_hint = INT_MIN;
- execlists->queue = RB_ROOT_CACHED;
+ se->queue = RB_ROOT_CACHED;
- GEM_BUG_ON(__tasklet_is_enabled(&execlists->tasklet));
- execlists->tasklet.callback = nop_submission_tasklet;
+ GEM_BUG_ON(__tasklet_is_enabled(&se->tasklet));
+ se->tasklet.callback = nop_submission_tasklet;
spin_unlock_irqrestore(&se->lock, flags);
rcu_read_unlock();
@@ -2733,7 +2725,7 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine)
static void execlists_reset_finish(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
/*
* After a GPU reset, we may have requests to replay. Do so now while
@@ -2745,14 +2737,8 @@ static void execlists_reset_finish(struct intel_engine_cs *engine)
* reset as the next level of recovery, and as a final resort we
* will declare the device wedged.
*/
- GEM_BUG_ON(!reset_in_progress(execlists));
- /* And kick in case we missed a new request submission. */
- if (__tasklet_enable(&execlists->tasklet))
- __execlists_kick(execlists);
-
- ENGINE_TRACE(engine, "depth->%d\n",
- atomic_read(&execlists->tasklet.count));
+ i915_sched_enable(se);
}
static void gen8_logical_ring_enable_irq(struct intel_engine_cs *engine)
@@ -2785,7 +2771,7 @@ static bool can_preempt(struct intel_engine_cs *engine)
static void execlists_set_default_submission(struct intel_engine_cs *engine)
{
engine->submit_request = i915_request_enqueue;
- engine->execlists.tasklet.callback = execlists_submission_tasklet;
+ engine->sched.tasklet.callback = execlists_submission_tasklet;
}
static void execlists_shutdown(struct intel_engine_cs *engine)
@@ -2793,7 +2779,6 @@ static void execlists_shutdown(struct intel_engine_cs *engine)
/* Synchronise with residual timers and any softirq they raise */
del_timer_sync(&engine->execlists.timer);
del_timer_sync(&engine->execlists.preempt);
- tasklet_kill(&engine->execlists.tasklet);
}
static void execlists_release(struct intel_engine_cs *engine)
@@ -2909,7 +2894,7 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine)
struct intel_uncore *uncore = engine->uncore;
u32 base = engine->mmio_base;
- tasklet_setup(&engine->execlists.tasklet, execlists_submission_tasklet);
+ tasklet_setup(&engine->sched.tasklet, execlists_submission_tasklet);
timer_setup(&engine->execlists.timer, execlists_timeslice, 0);
timer_setup(&engine->execlists.preempt, execlists_preempt, 0);
@@ -2957,7 +2942,7 @@ int intel_execlists_submission_setup(struct intel_engine_cs *engine)
static struct list_head *virtual_queue(struct virtual_engine *ve)
{
- return &ve->base.execlists.default_priolist.requests;
+ return &ve->base.sched.default_priolist.requests;
}
static void rcu_virtual_context_destroy(struct work_struct *wrk)
@@ -2992,7 +2977,7 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk)
* rbtrees as in the case it is running in parallel, it may reinsert
* the rb_node into a sibling.
*/
- tasklet_kill(&ve->base.execlists.tasklet);
+ i915_sched_fini(se);
/* Decouple ourselves from the siblings, no more access allowed. */
for (n = 0; n < ve->num_siblings; n++) {
@@ -3010,7 +2995,7 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk)
spin_unlock_irq(&sibling->sched.lock);
}
- GEM_BUG_ON(__tasklet_is_scheduled(&ve->base.execlists.tasklet));
+ GEM_BUG_ON(__tasklet_is_scheduled(&se->tasklet));
GEM_BUG_ON(!list_empty(virtual_queue(ve)));
lrc_fini(&ve->context);
@@ -3155,7 +3140,7 @@ static intel_engine_mask_t virtual_submission_mask(struct virtual_engine *ve)
static void virtual_submission_tasklet(struct tasklet_struct *t)
{
struct virtual_engine * const ve =
- from_tasklet(ve, t, base.execlists.tasklet);
+ from_tasklet(ve, t, base.sched.tasklet);
const int prio = READ_ONCE(ve->base.execlists.queue_priority_hint);
intel_engine_mask_t mask;
unsigned int n;
@@ -3226,7 +3211,7 @@ static void virtual_submission_tasklet(struct tasklet_struct *t)
GEM_BUG_ON(RB_EMPTY_NODE(&node->rb));
node->prio = prio;
if (first && prio > sibling->execlists.queue_priority_hint)
- tasklet_hi_schedule(&sibling->execlists.tasklet);
+ i915_sched_kick(se);
unlock_engine:
spin_unlock_irq(&se->lock);
@@ -3268,7 +3253,7 @@ static void virtual_submit_request(struct i915_request *rq)
GEM_BUG_ON(!list_empty(virtual_queue(ve)));
list_move_tail(&rq->sched.link, virtual_queue(ve));
- tasklet_hi_schedule(&ve->base.execlists.tasklet);
+ intel_engine_kick_scheduler(&ve->base);
unlock:
spin_unlock_irqrestore(&se->lock, flags);
@@ -3365,7 +3350,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
INIT_LIST_HEAD(virtual_queue(ve));
ve->base.execlists.queue_priority_hint = INT_MIN;
- tasklet_setup(&ve->base.execlists.tasklet, virtual_submission_tasklet);
+ tasklet_setup(&ve->base.sched.tasklet, virtual_submission_tasklet);
intel_context_init(&ve->context, &ve->base);
@@ -3393,7 +3378,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
* layering if we handle cloning of the requests and
* submitting a copy into each backend.
*/
- if (sibling->execlists.tasklet.callback !=
+ if (sibling->sched.tasklet.callback !=
execlists_submission_tasklet) {
err = -ENODEV;
goto err_put;
@@ -3558,7 +3543,7 @@ void intel_execlists_show_requests(struct intel_engine_cs *engine,
last = NULL;
count = 0;
- for (rb = rb_first_cached(&execlists->queue); rb; rb = rb_next(rb)) {
+ for (rb = rb_first_cached(&se->queue); rb; rb = rb_next(rb)) {
struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
priolist_for_each_request(rq, p) {
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
index 9fc6c912a4e5..6ce5bd28a23d 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_irq.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
@@ -59,7 +59,7 @@ cs_irq_handler(struct intel_engine_cs *engine, u32 iir)
}
if (tasklet)
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ intel_engine_kick_scheduler(engine);
}
static u32
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_requests.c b/drivers/gpu/drm/i915/gt/intel_gt_requests.c
index 14c7b18090f3..36ec97f79174 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_requests.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_requests.c
@@ -43,7 +43,7 @@ static bool flush_submission(struct intel_gt *gt, long timeout)
return false;
for_each_engine(engine, gt, id) {
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
/* Flush the background retirement and idle barriers */
flush_work(&engine->retire_work);
diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_pm.c b/drivers/gpu/drm/i915/gt/selftest_engine_pm.c
index 41dc1a542cd6..3ce8cb3329f3 100644
--- a/drivers/gpu/drm/i915/gt/selftest_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/selftest_engine_pm.c
@@ -103,7 +103,7 @@ static int __measure_timestamps(struct intel_context *ce,
intel_ring_advance(rq, cs);
i915_request_get(rq);
i915_request_add(rq);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
/* Wait for the request to start executing, that then waits for us */
while (READ_ONCE(sema[2]) == 0)
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 0395f9053a43..cfc0f4b9fbc5 100644
--- a/drivers/gpu/drm/i915/gt/selftest_execlists.c
+++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c
@@ -43,7 +43,7 @@ static int wait_for_submit(struct intel_engine_cs *engine,
unsigned long timeout)
{
/* Ignore our own attempts to suppress excess tasklets */
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ intel_engine_kick_scheduler(engine);
timeout += jiffies;
do {
@@ -53,7 +53,7 @@ static int wait_for_submit(struct intel_engine_cs *engine,
return 0;
/* Wait until the HW has acknowleged the submission (or err) */
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
if (!READ_ONCE(engine->execlists.pending[0]) && is_active(rq))
return 0;
@@ -72,7 +72,7 @@ static int wait_for_reset(struct intel_engine_cs *engine,
do {
cond_resched();
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
if (READ_ONCE(engine->execlists.pending[0]))
continue;
@@ -288,7 +288,7 @@ static int live_unlite_restore(struct intel_gt *gt, int prio)
i915_request_put(rq[0]);
err_ce:
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
igt_spinner_end(&spin);
for (n = 0; n < ARRAY_SIZE(ce); n++) {
if (IS_ERR_OR_NULL(ce[n]))
@@ -409,10 +409,10 @@ static int live_unlite_ring(void *arg)
}
i915_request_add(tmp);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
n++;
}
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
pr_debug("%s: Filled ring with %d nop tails {size:%x, tail:%x, emit:%x, rq.tail:%x}\n",
engine->name, n,
ce[0]->ring->size,
@@ -449,7 +449,7 @@ static int live_unlite_ring(void *arg)
ce[1]->ring->tail, ce[1]->ring->emit);
err_ce:
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
igt_spinner_end(&spin);
for (n = 0; n < ARRAY_SIZE(ce); n++) {
if (IS_ERR_OR_NULL(ce[n]))
@@ -568,6 +568,7 @@ static int live_hold_reset(void *arg)
return -ENOMEM;
for_each_engine(engine, gt, id) {
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
struct intel_context *ce;
struct i915_request *rq;
@@ -602,9 +603,9 @@ static int live_hold_reset(void *arg)
err = -EBUSY;
goto out;
}
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&se->tasklet);
- engine->execlists.tasklet.callback(&engine->execlists.tasklet);
+ se->tasklet.callback(&se->tasklet);
GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
i915_request_get(rq);
@@ -614,7 +615,7 @@ static int live_hold_reset(void *arg)
__intel_engine_reset_bh(engine, NULL);
GEM_BUG_ON(rq->fence.error != -EIO);
- tasklet_enable(&engine->execlists.tasklet);
+ tasklet_enable(&se->tasklet);
clear_and_wake_up_bit(I915_RESET_ENGINE + id,
>->reset.flags);
local_bh_enable();
@@ -762,7 +763,7 @@ static int live_error_interrupt(void *arg)
}
/* Kick the tasklet to process the error */
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
if (client[i]->fence.error != p->error[i]) {
pr_err("%s: %s request (%s) with wrong error code: %d\n",
engine->name,
@@ -1180,8 +1181,8 @@ static int live_timeslice_rewind(void *arg)
time_before(jiffies, timeout)) { /* semaphore yield! */
/* Wait for the timeslice to kick in */
del_timer(&engine->execlists.timer);
- tasklet_hi_schedule(&engine->execlists.tasklet);
- intel_engine_flush_submission(engine);
+ intel_engine_kick_scheduler(engine);
+ intel_engine_flush_scheduler(engine);
/*
* Unfortunately this assumes that during the
@@ -1369,7 +1370,7 @@ static int live_timeslice_queue(void *arg)
/* Wait until we ack the release_queue and start timeslicing */
do {
cond_resched();
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
} while (READ_ONCE(engine->execlists.pending[0]));
/* Timeslice every jiffy, so within 2 we should signal */
@@ -2339,9 +2340,9 @@ static int __cancel_fail(struct live_preempt_cancel *arg)
/* force preempt reset [failure] */
while (!engine->execlists.pending[0])
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
del_timer_sync(&engine->execlists.preempt);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
cancel_reset_timeout(engine);
@@ -2845,10 +2846,10 @@ static int __live_preempt_ring(struct intel_engine_cs *engine,
}
i915_request_add(tmp);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
n++;
}
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
pr_debug("%s: Filled %d with %d nop tails {size:%x, tail:%x, emit:%x, rq.tail:%x}\n",
engine->name, queue_sz, n,
ce[0]->ring->size,
@@ -2882,7 +2883,7 @@ static int __live_preempt_ring(struct intel_engine_cs *engine,
ce[1]->ring->tail, ce[1]->ring->emit);
err_ce:
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
igt_spinner_end(spin);
for (n = 0; n < ARRAY_SIZE(ce); n++) {
if (IS_ERR_OR_NULL(ce[n]))
@@ -3417,7 +3418,7 @@ static int live_preempt_timeout(void *arg)
i915_request_get(rq);
i915_request_add(rq);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
engine->props.preempt_timeout_ms = saved_timeout;
if (i915_request_wait(rq, 0, HZ / 10) < 0) {
@@ -4457,7 +4458,7 @@ static int bond_virtual_engine(struct intel_gt *gt,
}
}
onstack_fence_fini(&fence);
- intel_engine_flush_submission(master);
+ intel_engine_flush_scheduler(master);
igt_spinner_end(&spin);
if (i915_request_wait(rq[0], 0, HZ / 10) < 0) {
@@ -4596,9 +4597,9 @@ static int reset_virtual_engine(struct intel_gt *gt,
err = -EBUSY;
goto out_heartbeat;
}
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&se->tasklet);
- engine->execlists.tasklet.callback(&engine->execlists.tasklet);
+ se->tasklet.callback(&se->tasklet);
GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
/* Fake a preemption event; failed of course */
@@ -4615,7 +4616,7 @@ static int reset_virtual_engine(struct intel_gt *gt,
GEM_BUG_ON(rq->fence.error != -EIO);
/* Release our grasp on the engine, letting CS flow again */
- tasklet_enable(&engine->execlists.tasklet);
+ tasklet_enable(&se->tasklet);
clear_and_wake_up_bit(I915_RESET_ENGINE + engine->id, >->reset.flags);
local_bh_enable();
diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 8cad102922e7..cdb0ceff3be1 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -1701,7 +1701,8 @@ static int __igt_atomic_reset_engine(struct intel_engine_cs *engine,
const struct igt_atomic_section *p,
const char *mode)
{
- struct tasklet_struct * const t = &engine->execlists.tasklet;
+ struct tasklet_struct * const t =
+ &intel_engine_get_scheduler(engine)->tasklet;
int err;
GEM_TRACE("i915_reset_engine(%s:%s) under %s\n",
diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index e97adf1b7729..279091e41b41 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -49,7 +49,7 @@ static int wait_for_submit(struct intel_engine_cs *engine,
unsigned long timeout)
{
/* Ignore our own attempts to suppress excess tasklets */
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ intel_engine_kick_scheduler(engine);
timeout += jiffies;
do {
@@ -59,7 +59,7 @@ static int wait_for_submit(struct intel_engine_cs *engine,
return 0;
/* Wait until the HW has acknowleged the submission (or err) */
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
if (!READ_ONCE(engine->execlists.pending[0]) && is_active(rq))
return 0;
@@ -417,7 +417,7 @@ static int __live_lrc_state(struct intel_engine_cs *engine,
if (err)
goto err_rq;
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
expected[RING_TAIL_IDX] = ce->ring->tail;
if (i915_request_wait(rq, 0, HZ / 5) < 0) {
@@ -1852,17 +1852,18 @@ static int live_lrc_indirect_ctx_bb(void *arg)
static void garbage_reset(struct intel_engine_cs *engine,
struct i915_request *rq)
{
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
const unsigned int bit = I915_RESET_ENGINE + engine->id;
unsigned long *lock = &engine->gt->reset.flags;
local_bh_disable();
if (!test_and_set_bit(bit, lock)) {
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&se->tasklet);
if (!rq->fence.error)
__intel_engine_reset_bh(engine, NULL);
- tasklet_enable(&engine->execlists.tasklet);
+ tasklet_enable(&se->tasklet);
clear_and_wake_up_bit(bit, lock);
}
local_bh_enable();
@@ -1923,7 +1924,7 @@ static int __lrc_garbage(struct intel_engine_cs *engine, struct rnd_state *prng)
intel_context_set_banned(ce);
garbage_reset(engine, hang);
- intel_engine_flush_submission(engine);
+ intel_engine_flush_scheduler(engine);
if (!hang->fence.error) {
i915_request_put(hang);
pr_err("%s: corrupted context was not reset\n",
diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c
index 8784257ec808..08594309a96d 100644
--- a/drivers/gpu/drm/i915/gt/selftest_reset.c
+++ b/drivers/gpu/drm/i915/gt/selftest_reset.c
@@ -321,7 +321,8 @@ static int igt_atomic_engine_reset(void *arg)
goto out_unlock;
for_each_engine(engine, gt, id) {
- struct tasklet_struct *t = &engine->execlists.tasklet;
+ struct tasklet_struct *t =
+ &intel_engine_get_scheduler(engine)->tasklet;
if (t->func)
tasklet_disable(t);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 45f6d38341ef..15e4ec5ae73a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -204,7 +204,7 @@ static void __guc_dequeue(struct intel_engine_cs *engine)
* event.
*/
port = first;
- while ((rb = rb_first_cached(&execlists->queue))) {
+ while ((rb = rb_first_cached(&se->queue))) {
struct i915_priolist *p = to_priolist(rb);
struct i915_request *rq, *rn;
@@ -224,7 +224,7 @@ static void __guc_dequeue(struct intel_engine_cs *engine)
last = rq;
}
- rb_erase_cached(&p->node, &execlists->queue);
+ rb_erase_cached(&p->node, &se->queue);
i915_priolist_free(p);
}
done:
@@ -240,9 +240,9 @@ static void __guc_dequeue(struct intel_engine_cs *engine)
static void guc_submission_tasklet(struct tasklet_struct *t)
{
+ struct i915_sched *se = from_tasklet(se, t, tasklet);
struct intel_engine_cs * const engine =
- from_tasklet(engine, t, execlists.tasklet);
- struct i915_sched *se = intel_engine_get_scheduler(engine);
+ container_of(se, typeof(*engine), sched);
struct intel_engine_execlists * const execlists = &engine->execlists;
struct i915_request **port, *rq;
unsigned long flags;
@@ -268,10 +268,6 @@ static void guc_submission_tasklet(struct tasklet_struct *t)
static void guc_reset_prepare(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
-
- ENGINE_TRACE(engine, "\n");
-
/*
* Prevent request submission to the hardware until we have
* completed the reset in i915_gem_reset_finish(). If a request
@@ -281,7 +277,7 @@ static void guc_reset_prepare(struct intel_engine_cs *engine)
* Turning off the execlists->tasklet until the reset is over
* prevents the race.
*/
- __tasklet_disable_sync_once(&execlists->tasklet);
+ i915_sched_enable(intel_engine_get_scheduler(engine));
}
static void guc_reset_state(struct intel_context *ce,
@@ -362,7 +358,7 @@ static void guc_reset_cancel(struct intel_engine_cs *engine)
}
/* Flush the queued requests to the timeline list (for retiring). */
- while ((rb = rb_first_cached(&execlists->queue))) {
+ while ((rb = rb_first_cached(&se->queue))) {
struct i915_priolist *p = to_priolist(rb);
priolist_for_each_request_consume(rq, rn, p) {
@@ -372,28 +368,22 @@ static void guc_reset_cancel(struct intel_engine_cs *engine)
i915_request_mark_complete(rq);
}
- rb_erase_cached(&p->node, &execlists->queue);
+ rb_erase_cached(&p->node, &se->queue);
i915_priolist_free(p);
}
+ GEM_BUG_ON(!i915_sched_is_idle(se));
/* Remaining _unready_ requests will be nop'ed when submitted */
execlists->queue_priority_hint = INT_MIN;
- execlists->queue = RB_ROOT_CACHED;
+ se->queue = RB_ROOT_CACHED;
spin_unlock_irqrestore(&se->lock, flags);
}
static void guc_reset_finish(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
-
- if (__tasklet_enable(&execlists->tasklet))
- /* And kick in case we missed a new request submission. */
- tasklet_hi_schedule(&execlists->tasklet);
-
- ENGINE_TRACE(engine, "depth->%d\n",
- atomic_read(&execlists->tasklet.count));
+ i915_sched_enable(intel_engine_get_scheduler(engine));
}
/*
@@ -589,8 +579,6 @@ static void guc_release(struct intel_engine_cs *engine)
{
engine->sanitize = NULL; /* no longer in control, nothing to sanitize */
- tasklet_kill(&engine->execlists.tasklet);
-
intel_engine_cleanup_common(engine);
lrc_fini_wa_ctx(engine);
}
@@ -667,7 +655,7 @@ int intel_guc_submission_setup(struct intel_engine_cs *engine)
*/
GEM_BUG_ON(INTEL_GEN(i915) < 11);
- tasklet_setup(&engine->execlists.tasklet, guc_submission_tasklet);
+ tasklet_setup(&engine->sched.tasklet, guc_submission_tasklet);
guc_default_vfuncs(engine);
guc_default_irqs(engine);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f684147290cb..0e4d7998be53 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -99,7 +99,6 @@
#include "i915_gpu_error.h"
#include "i915_perf_types.h"
#include "i915_request.h"
-#include "i915_scheduler.h"
#include "gt/intel_timeline.h"
#include "i915_vma.h"
#include "i915_irq.h"
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index d736c1aae6e5..1b52dcaa023d 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -1847,7 +1847,7 @@ long i915_request_wait(struct i915_request *rq,
* for unhappy HW.
*/
if (i915_request_is_ready(rq))
- __intel_engine_flush_submission(rq->engine, false);
+ __i915_sched_flush(i915_request_get_scheduler(rq), false);
for (;;) {
set_current_state(state);
diff --git a/drivers/gpu/drm/i915/i915_request.h b/drivers/gpu/drm/i915/i915_request.h
index 3a5d6bdcd8dd..c41582b96b46 100644
--- a/drivers/gpu/drm/i915/i915_request.h
+++ b/drivers/gpu/drm/i915/i915_request.h
@@ -35,7 +35,7 @@
#include "gt/intel_timeline_types.h"
#include "i915_gem.h"
-#include "i915_scheduler.h"
+#include "i915_scheduler_types.h"
#include "i915_selftest.h"
#include "i915_sw_fence.h"
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
index 3c1c03e7932b..ad87c41255ec 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -107,6 +107,7 @@ void i915_sched_init(struct i915_sched *se,
INIT_LIST_HEAD(&se->requests);
INIT_LIST_HEAD(&se->hold);
+ se->queue = RB_ROOT_CACHED;
i915_sched_init_ipi(&se->ipi);
@@ -123,6 +124,20 @@ void i915_sched_init(struct i915_sched *se,
#endif
}
+void i915_sched_park(struct i915_sched *se)
+{
+ GEM_BUG_ON(!i915_sched_is_idle(se));
+ se->no_priolist = false;
+}
+
+void i915_sched_fini(struct i915_sched *se)
+{
+ GEM_BUG_ON(!list_empty(&se->requests));
+
+ tasklet_kill(&se->tasklet); /* flush the callback */
+ i915_sched_park(se);
+}
+
static void __ipi_add(struct i915_request *rq)
{
#define STUB ((struct i915_request *)1)
@@ -191,7 +206,7 @@ static inline struct i915_priolist *to_priolist(struct rb_node *rb)
return rb_entry(rb, struct i915_priolist, node);
}
-static void assert_priolists(struct intel_engine_execlists * const execlists)
+static void assert_priolists(struct i915_sched * const se)
{
struct rb_node *rb;
long last_prio;
@@ -199,11 +214,11 @@ static void assert_priolists(struct intel_engine_execlists * const execlists)
if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
return;
- GEM_BUG_ON(rb_first_cached(&execlists->queue) !=
- rb_first(&execlists->queue.rb_root));
+ GEM_BUG_ON(rb_first_cached(&se->queue) !=
+ rb_first(&se->queue.rb_root));
last_prio = INT_MAX;
- for (rb = rb_first_cached(&execlists->queue); rb; rb = rb_next(rb)) {
+ for (rb = rb_first_cached(&se->queue); rb; rb = rb_next(rb)) {
const struct i915_priolist *p = to_priolist(rb);
GEM_BUG_ON(p->priority > last_prio);
@@ -212,24 +227,22 @@ static void assert_priolists(struct intel_engine_execlists * const execlists)
}
static struct list_head *
-lookup_priolist(struct intel_engine_cs *engine, int prio)
+lookup_priolist(struct i915_sched *se, int prio)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
- struct i915_sched *se = intel_engine_get_scheduler(engine);
struct i915_priolist *p;
struct rb_node **parent, *rb;
bool first = true;
lockdep_assert_held(&se->lock);
- assert_priolists(execlists);
+ assert_priolists(se);
- if (unlikely(execlists->no_priolist))
+ if (unlikely(se->no_priolist))
prio = I915_PRIORITY_NORMAL;
find_priolist:
/* most positive priority is scheduled first, equal priorities fifo */
rb = NULL;
- parent = &execlists->queue.rb_root.rb_node;
+ parent = &se->queue.rb_root.rb_node;
while (*parent) {
rb = *parent;
p = to_priolist(rb);
@@ -244,7 +257,7 @@ lookup_priolist(struct intel_engine_cs *engine, int prio)
}
if (prio == I915_PRIORITY_NORMAL) {
- p = &execlists->default_priolist;
+ p = &se->default_priolist;
} else {
p = kmem_cache_alloc(global.slab_priorities, GFP_ATOMIC);
/* Convert an allocation failure to a priority bump */
@@ -259,7 +272,7 @@ lookup_priolist(struct intel_engine_cs *engine, int prio)
* requests, so if userspace lied about their
* dependencies that reordering may be visible.
*/
- execlists->no_priolist = true;
+ se->no_priolist = true;
goto find_priolist;
}
}
@@ -268,7 +281,7 @@ lookup_priolist(struct intel_engine_cs *engine, int prio)
INIT_LIST_HEAD(&p->requests);
rb_link_node(&p->node, rb, parent);
- rb_insert_color_cached(&p->node, &execlists->queue, first);
+ rb_insert_color_cached(&p->node, &se->queue, first);
return &p->requests;
}
@@ -343,7 +356,7 @@ static void kick_submission(struct intel_engine_cs *engine,
engine->execlists.queue_priority_hint = prio;
if (need_preempt(prio, rq_prio(inflight)))
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ intel_engine_kick_scheduler(engine);
}
static void ipi_priority(struct i915_request *rq, int prio)
@@ -361,13 +374,14 @@ static void ipi_priority(struct i915_request *rq, int prio)
static void __i915_request_set_priority(struct i915_request *rq, int prio)
{
struct intel_engine_cs *engine = rq->engine;
+ struct i915_sched *se = intel_engine_get_scheduler(engine);
struct list_head *pos = &rq->sched.signalers_list;
struct list_head *plist;
SCHED_TRACE(&engine->sched, "PI for " RQ_FMT ", prio:%d\n",
RQ_ARG(rq), prio);
- plist = lookup_priolist(engine, prio);
+ plist = lookup_priolist(se, prio);
/*
* Recursively bump all dependent priorities to match the new request.
@@ -570,18 +584,18 @@ void __i915_sched_defer_request(struct intel_engine_cs *engine,
clear_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
} while ((rq = stack_pop(rq, &pos)));
- pos = lookup_priolist(engine, prio);
+ pos = lookup_priolist(se, prio);
list_for_each_entry_safe(rq, rn, &dfs, sched.link) {
set_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
list_add_tail(&rq->sched.link, pos);
}
}
-static void queue_request(struct intel_engine_cs *engine,
+static void queue_request(struct i915_sched *se,
struct i915_request *rq)
{
GEM_BUG_ON(!list_empty(&rq->sched.link));
- list_add_tail(&rq->sched.link, lookup_priolist(engine, rq_prio(rq)));
+ list_add_tail(&rq->sched.link, lookup_priolist(se, rq_prio(rq)));
set_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
}
@@ -648,9 +662,9 @@ void i915_request_enqueue(struct i915_request *rq)
list_add_tail(&rq->sched.link, &se->hold);
i915_request_set_hold(rq);
} else {
- queue_request(engine, rq);
+ queue_request(se, rq);
- GEM_BUG_ON(RB_EMPTY_ROOT(&engine->execlists.queue.rb_root));
+ GEM_BUG_ON(i915_sched_is_idle(se));
kick = submit_queue(engine, rq);
}
@@ -658,7 +672,7 @@ void i915_request_enqueue(struct i915_request *rq)
GEM_BUG_ON(list_empty(&rq->sched.link));
spin_unlock_irqrestore(&se->lock, flags);
if (kick)
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ i915_sched_kick(se);
}
struct i915_request *
@@ -682,9 +696,9 @@ __i915_sched_rewind_requests(struct intel_engine_cs *engine)
GEM_BUG_ON(rq_prio(rq) == I915_PRIORITY_INVALID);
if (rq_prio(rq) != prio) {
prio = rq_prio(rq);
- pl = lookup_priolist(engine, prio);
+ pl = lookup_priolist(se, prio);
}
- GEM_BUG_ON(RB_EMPTY_ROOT(&engine->execlists.queue.rb_root));
+ GEM_BUG_ON(i915_sched_is_idle(se));
list_move(&rq->sched.link, pl);
set_bit(I915_FENCE_FLAG_PQUEUE, &rq->fence.flags);
@@ -796,7 +810,7 @@ void __i915_sched_resume_request(struct intel_engine_cs *engine,
if (rq_prio(rq) > engine->execlists.queue_priority_hint) {
engine->execlists.queue_priority_hint = rq_prio(rq);
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ i915_sched_kick(se);
}
if (!i915_request_on_hold(rq))
@@ -819,7 +833,7 @@ void __i915_sched_resume_request(struct intel_engine_cs *engine,
i915_request_clear_hold(rq);
list_del_init(&rq->sched.link);
- queue_request(engine, rq);
+ queue_request(se, rq);
/* Also release any children on this engine that are ready */
for_each_waiter(p, rq) {
@@ -992,6 +1006,44 @@ void i915_sched_node_retire(struct i915_sched_node *node)
}
}
+void i915_sched_disable(struct i915_sched *se)
+{
+ __tasklet_disable_sync_once(&se->tasklet);
+ GEM_BUG_ON(!i915_sched_is_disabled(se));
+ SCHED_TRACE(se, "disable:%d\n", atomic_read(&se->tasklet.count));
+}
+
+void i915_sched_enable(struct i915_sched *se)
+{
+ SCHED_TRACE(se, "enable:%d\n", atomic_read(&se->tasklet.count));
+ GEM_BUG_ON(!i915_sched_is_disabled(se));
+
+ /* And kick in case we missed a new request submission. */
+ if (__tasklet_enable(&se->tasklet))
+ i915_sched_kick(se);
+}
+
+void __i915_sched_flush(struct i915_sched *se, bool sync)
+{
+ struct tasklet_struct *t = &se->tasklet;
+
+ if (!t->callback)
+ return;
+
+ local_bh_disable();
+ if (tasklet_trylock(t)) {
+ /* Must wait for any GPU reset in progress. */
+ if (__tasklet_is_enabled(t))
+ t->callback(t);
+ tasklet_unlock(t);
+ }
+ local_bh_enable();
+
+ /* Synchronise and wait for the tasklet on another CPU */
+ if (sync)
+ tasklet_unlock_wait(t);
+}
+
void i915_request_show_with_schedule(struct drm_printer *m,
const struct i915_request *rq,
const char *prefix,
diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h
index ebd93ae303b4..e2e8b90adb66 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.h
+++ b/drivers/gpu/drm/i915/i915_scheduler.h
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include "i915_scheduler_types.h"
+#include "i915_request.h"
struct drm_printer;
struct intel_engine_cs;
@@ -48,6 +49,8 @@ void i915_sched_init(struct i915_sched *se,
const char *name,
unsigned long mask,
unsigned int subclass);
+void i915_sched_park(struct i915_sched *se);
+void i915_sched_fini(struct i915_sched *se);
void i915_request_set_priority(struct i915_request *request, int prio);
@@ -75,6 +78,52 @@ static inline void i915_priolist_free(struct i915_priolist *p)
__i915_priolist_free(p);
}
+static inline bool i915_sched_is_idle(const struct i915_sched *se)
+{
+ return RB_EMPTY_ROOT(&se->queue.rb_root);
+}
+
+static inline bool
+i915_sched_is_last_request(const struct i915_sched *se,
+ const struct i915_request *rq)
+{
+ return list_is_last_rcu(&rq->sched.link, &se->requests);
+}
+
+static inline void
+i915_sched_lock_bh(struct i915_sched *se)
+{
+ local_bh_disable(); /* prevent local softirq and lock recursion */
+ tasklet_lock(&se->tasklet);
+}
+
+static inline void
+i915_sched_unlock_bh(struct i915_sched *se)
+{
+ tasklet_unlock(&se->tasklet);
+ local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
+}
+
+static inline void i915_sched_kick(struct i915_sched *se)
+{
+ /* Kick the tasklet for some interrupt coalescing and reset handling */
+ tasklet_hi_schedule(&se->tasklet);
+}
+
+static inline bool i915_sched_is_disabled(const struct i915_sched *se)
+{
+ return unlikely(!__tasklet_is_enabled(&se->tasklet));
+}
+
+void i915_sched_disable(struct i915_sched *se);
+void i915_sched_enable(struct i915_sched *se);
+
+void __i915_sched_flush(struct i915_sched *se, bool sync);
+static inline void i915_sched_flush(struct i915_sched *se)
+{
+ __i915_sched_flush(se, true);
+}
+
void i915_request_show_with_schedule(struct drm_printer *m,
const struct i915_request *rq,
const char *prefix,
diff --git a/drivers/gpu/drm/i915/i915_scheduler_types.h b/drivers/gpu/drm/i915/i915_scheduler_types.h
index b7ee122d4f28..9b09749358ad 100644
--- a/drivers/gpu/drm/i915/i915_scheduler_types.h
+++ b/drivers/gpu/drm/i915/i915_scheduler_types.h
@@ -7,6 +7,7 @@
#ifndef _I915_SCHEDULER_TYPES_H_
#define _I915_SCHEDULER_TYPES_H_
+#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/workqueue.h>
@@ -29,6 +30,18 @@ struct i915_sched {
struct list_head requests; /* active request, on HW */
struct list_head hold; /* ready requests, but on hold */
+ /**
+ * @queue: queue of requests, in priority lists
+ */
+ struct rb_root_cached queue;
+
+ /**
+ * @tasklet: softirq tasklet for bottom half
+ *
+ * The tasklet is responsible for transferring the priority queue
+ * to HW, and for handling responses from HW.
+ */
+ struct tasklet_struct tasklet;
/* Inter-engine scheduling delegate */
struct i915_sched_ipi {
@@ -36,6 +49,16 @@ struct i915_sched {
struct work_struct work;
} ipi;
+ /**
+ * @default_priolist: priority list for I915_PRIORITY_NORMAL
+ */
+ struct i915_priolist default_priolist;
+
+ /**
+ * @no_priolist: priority lists disabled
+ */
+ bool no_priolist;
+
/* Pretty device names for debug messages */
struct {
struct device *dev;
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
index d2a678a2497e..39c619bccb74 100644
--- a/drivers/gpu/drm/i915/selftests/i915_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -1517,7 +1517,7 @@ static int switch_to_kernel_sync(struct intel_context *ce, int err)
i915_request_put(rq);
while (!err && !intel_engine_is_idle(ce->engine))
- intel_engine_flush_submission(ce->engine);
+ intel_engine_flush_scheduler(ce->engine);
return err;
}
@@ -1902,7 +1902,7 @@ static int measure_inter_request(struct intel_context *ce)
return -ENOMEM;
}
- intel_engine_flush_submission(ce->engine);
+ intel_engine_flush_scheduler(ce->engine);
for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
struct i915_request *rq;
u32 *cs;
@@ -1934,7 +1934,7 @@ static int measure_inter_request(struct intel_context *ce)
i915_request_add(rq);
}
i915_sw_fence_commit(submit);
- intel_engine_flush_submission(ce->engine);
+ intel_engine_flush_scheduler(ce->engine);
heap_fence_put(submit);
semaphore_set(sema, 1);
@@ -2030,7 +2030,7 @@ static int measure_context_switch(struct intel_context *ce)
}
}
i915_request_put(fence);
- intel_engine_flush_submission(ce->engine);
+ intel_engine_flush_scheduler(ce->engine);
semaphore_set(sema, 1);
err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
@@ -2221,7 +2221,7 @@ static int measure_completion(struct intel_context *ce)
dma_fence_add_callback(&rq->fence, &cb.base, signal_cb);
i915_request_add(rq);
- intel_engine_flush_submission(ce->engine);
+ intel_engine_flush_scheduler(ce->engine);
if (wait_for(READ_ONCE(sema[i]) == -1, 50)) {
err = -EIO;
goto err;
diff --git a/drivers/gpu/drm/i915/selftests/i915_scheduler.c b/drivers/gpu/drm/i915/selftests/i915_scheduler.c
index b1a0a711e01f..dbbefd0da2f2 100644
--- a/drivers/gpu/drm/i915/selftests/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/selftests/i915_scheduler.c
@@ -77,8 +77,7 @@ static int all_engines(struct drm_i915_private *i915,
return 0;
}
-static bool check_context_order(struct i915_sched *se,
- struct intel_engine_cs *engine)
+static bool check_context_order(struct i915_sched *se)
{
u64 last_seqno, last_context;
unsigned long count;
@@ -93,7 +92,7 @@ static bool check_context_order(struct i915_sched *se,
last_context = 0;
last_seqno = 0;
last_prio = 0;
- for (rb = rb_first_cached(&engine->execlists.queue); rb; rb = rb_next(rb)) {
+ for (rb = rb_first_cached(&se->queue); rb; rb = rb_next(rb)) {
struct i915_priolist *p = rb_entry(rb, typeof(*p), node);
struct i915_request *rq;
@@ -172,12 +171,12 @@ static int __single_chain(struct intel_engine_cs *engine, unsigned long length,
i915_request_add(rq);
count++;
}
- intel_engine_flush_submission(engine);
+ i915_sched_flush(se);
- execlists_active_lock_bh(&engine->execlists);
- if (fn(rq, count, count - 1) && !check_context_order(se, engine))
+ i915_sched_lock_bh(se);
+ if (fn(rq, count, count - 1) && !check_context_order(se))
err = -EINVAL;
- execlists_active_unlock_bh(&engine->execlists);
+ i915_sched_unlock_bh(se);
igt_spinner_end(&spin);
err_context:
@@ -257,12 +256,12 @@ static int __wide_chain(struct intel_engine_cs *engine, unsigned long width,
}
i915_request_add(rq[i]);
}
- intel_engine_flush_submission(engine);
+ i915_sched_flush(se);
- execlists_active_lock_bh(&engine->execlists);
- if (fn(rq[i - 1], i, count) && !check_context_order(se, engine))
+ i915_sched_lock_bh(se);
+ if (fn(rq[i - 1], i, count) && !check_context_order(se))
err = -EINVAL;
- execlists_active_unlock_bh(&engine->execlists);
+ i915_sched_unlock_bh(se);
igt_spinner_end(&spin);
err_free:
@@ -346,12 +345,12 @@ static int __inv_chain(struct intel_engine_cs *engine, unsigned long width,
}
i915_request_add(rq[i]);
}
- intel_engine_flush_submission(engine);
+ i915_sched_flush(se);
- execlists_active_lock_bh(&engine->execlists);
- if (fn(rq[i - 1], i, count) && !check_context_order(se, engine))
+ i915_sched_lock_bh(se);
+ if (fn(rq[i - 1], i, count) && !check_context_order(se))
err = -EINVAL;
- execlists_active_unlock_bh(&engine->execlists);
+ i915_sched_unlock_bh(se);
igt_spinner_end(&spin);
err_free:
@@ -452,12 +451,12 @@ static int __sparse_chain(struct intel_engine_cs *engine, unsigned long width,
if (err)
break;
}
- intel_engine_flush_submission(engine);
+ i915_sched_flush(se);
- execlists_active_lock_bh(&engine->execlists);
- if (fn(rq[i - 1], i, count) && !check_context_order(se, engine))
+ i915_sched_lock_bh(se);
+ if (fn(rq[i - 1], i, count) && !check_context_order(se))
err = -EINVAL;
- execlists_active_unlock_bh(&engine->execlists);
+ i915_sched_unlock_bh(se);
igt_spinner_end(&spin);
err_free:
diff --git a/drivers/gpu/drm/i915/selftests/igt_spinner.c b/drivers/gpu/drm/i915/selftests/igt_spinner.c
index 83f6e5f31fb3..0e6c1ea0082a 100644
--- a/drivers/gpu/drm/i915/selftests/igt_spinner.c
+++ b/drivers/gpu/drm/i915/selftests/igt_spinner.c
@@ -221,7 +221,7 @@ void igt_spinner_fini(struct igt_spinner *spin)
bool igt_wait_for_spinner(struct igt_spinner *spin, struct i915_request *rq)
{
if (i915_request_is_ready(rq))
- intel_engine_flush_submission(rq->engine);
+ __i915_sched_flush(i915_request_get_scheduler(rq), false);
return !(wait_for_us(i915_seqno_passed(hws_seqno(spin, rq),
rq->fence.seqno),
--
2.20.1
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