[PATCH 8/9] drm/i915: Move submission tasklet to i915_sched_engine
Matthew Brost
matthew.brost at intel.com
Thu Jun 3 21:27:21 UTC 2021
The submission tasklet operates on i915_sched_engine, thus it is the
correct place for it.
Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine.h | 14 ---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 12 +--
drivers/gpu/drm/i915/gt/intel_engine_types.h | 5 --
.../drm/i915/gt/intel_execlists_submission.c | 86 ++++++++++---------
drivers/gpu/drm/i915/gt/mock_engine.c | 1 +
drivers/gpu/drm/i915/gt/selftest_execlists.c | 16 ++--
drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 2 +-
drivers/gpu/drm/i915/gt/selftest_lrc.c | 6 +-
drivers/gpu/drm/i915/gt/selftest_reset.c | 2 +-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 25 +++---
drivers/gpu/drm/i915/i915_scheduler.c | 1 +
drivers/gpu/drm/i915/i915_scheduler.h | 14 +++
drivers/gpu/drm/i915/i915_scheduler_types.h | 8 ++
13 files changed, 99 insertions(+), 93 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h b/drivers/gpu/drm/i915/gt/intel_engine.h
index a8b2174b4395..988d9688ae4d 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -123,20 +123,6 @@ 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! */
-}
-
struct i915_request *
execlists_unwind_incomplete_requests(struct intel_engine_execlists *execlists);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index b480fcb1aad1..837d2132e31b 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -711,6 +711,7 @@ static int engine_setup_common(struct intel_engine_cs *engine)
err = -ENOMEM;
goto err_sched_engine;
}
+ engine->sched_engine->engine = engine;
err = intel_engine_init_cmd_parser(engine);
if (err)
@@ -935,7 +936,6 @@ 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_engine->requests));
- tasklet_kill(&engine->execlists.tasklet); /* flush the callback */
i915_sched_engine_put(engine->sched_engine);
intel_breadcrumbs_free(engine->breadcrumbs);
@@ -1221,7 +1221,7 @@ static bool ring_is_idle(struct intel_engine_cs *engine)
void __intel_engine_flush_submission(struct intel_engine_cs *engine, bool sync)
{
- struct tasklet_struct *t = &engine->execlists.tasklet;
+ struct tasklet_struct *t = &engine->sched_engine->tasklet;
if (!t->callback)
return;
@@ -1482,8 +1482,8 @@ 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)),
+ &engine->sched_engine->tasklet.state)),
+ enableddisabled(!atomic_read(&engine->sched_engine->tasklet.count)),
repr_timer(&engine->execlists.preempt),
repr_timer(&engine->execlists.timer));
@@ -1507,7 +1507,7 @@ 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_engine_active_lock_bh(engine->sched_engine);
rcu_read_lock();
for (port = execlists->active; (rq = *port); port++) {
char hdr[160];
@@ -1538,7 +1538,7 @@ 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_engine_active_unlock_bh(engine->sched_engine);
} 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_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index f1b14aff5118..6f2fd6f13ac4 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
*/
diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 7240c153be35..7a93aec3f6a9 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -570,7 +570,7 @@ 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);
+ tasklet_hi_schedule(&ve->base.sched_engine->tasklet);
}
static void __execlists_schedule_out(struct i915_request * const rq,
@@ -739,9 +739,9 @@ trace_ports(const struct intel_engine_execlists *execlists,
}
static bool
-reset_in_progress(const struct intel_engine_execlists *execlists)
+reset_in_progress(const struct intel_engine_cs *engine)
{
- return unlikely(!__tasklet_is_enabled(&execlists->tasklet));
+ return unlikely(!__tasklet_is_enabled(&engine->sched_engine->tasklet));
}
static __maybe_unused noinline bool
@@ -757,7 +757,7 @@ 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 (reset_in_progress(engine))
return true;
if (!execlists->pending[0]) {
@@ -1190,7 +1190,7 @@ static void start_timeslice(struct intel_engine_cs *engine)
* its timeslice, so recheck.
*/
if (!timer_pending(&el->timer))
- tasklet_hi_schedule(&el->tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
return;
}
@@ -1772,8 +1772,8 @@ process_csb(struct intel_engine_cs *engine, struct i915_request **inactive)
* 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));
+ GEM_BUG_ON(!tasklet_is_locked(&engine->sched_engine->tasklet) &&
+ !reset_in_progress(engine));
/*
* Note that csb_write, csb_status may be either in HWSP or mmio.
@@ -2131,7 +2131,7 @@ static void execlists_unhold(struct intel_engine_cs *engine,
if (rq_prio(rq) > engine->sched_engine->queue_priority_hint) {
engine->sched_engine->queue_priority_hint = rq_prio(rq);
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
}
spin_unlock_irq(&engine->sched_engine->lock);
@@ -2322,13 +2322,13 @@ static void execlists_reset(struct intel_engine_cs *engine, const char *msg)
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(&engine->sched_engine->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(&engine->sched_engine->tasklet);
clear_and_wake_up_bit(bit, lock);
}
@@ -2351,8 +2351,9 @@ 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);
+ struct i915_sched_engine *sched_engine =
+ from_tasklet(sched_engine, t, tasklet);
+ struct intel_engine_cs * const engine = sched_engine->engine;
struct i915_request *post[2 * EXECLIST_MAX_PORTS];
struct i915_request **inactive;
@@ -2427,13 +2428,16 @@ static void execlists_irq_handler(struct intel_engine_cs *engine, u16 iir)
intel_engine_signal_breadcrumbs(engine);
if (tasklet)
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
}
static void __execlists_kick(struct intel_engine_execlists *execlists)
{
+ struct intel_engine_cs *engine =
+ container_of(execlists, typeof(*engine), execlists);
+
/* Kick the tasklet for some interrupt coalescing and reset handling */
- tasklet_hi_schedule(&execlists->tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
}
#define execlists_kick(t, member) \
@@ -2808,10 +2812,8 @@ 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));
+ atomic_read(&engine->sched_engine->tasklet.count));
/*
* Prevent request submission to the hardware until we have
@@ -2822,8 +2824,8 @@ 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));
+ __tasklet_disable_sync_once(&engine->sched_engine->tasklet);
+ GEM_BUG_ON(!reset_in_progress(engine));
/*
* We stop engines, otherwise we might get failed reset and a
@@ -2973,8 +2975,9 @@ 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);
+ struct i915_sched_engine *sched_engine =
+ from_tasklet(sched_engine, t, tasklet);
+ struct intel_engine_cs * const engine = sched_engine->engine;
/* The driver is wedged; don't process any more events. */
WRITE_ONCE(engine->sched_engine->queue_priority_hint, INT_MIN);
@@ -3061,8 +3064,8 @@ static void execlists_reset_cancel(struct intel_engine_cs *engine)
sched_engine->queue_priority_hint = INT_MIN;
sched_engine->queue = RB_ROOT_CACHED;
- GEM_BUG_ON(__tasklet_is_enabled(&execlists->tasklet));
- execlists->tasklet.callback = nop_submission_tasklet;
+ GEM_BUG_ON(__tasklet_is_enabled(&engine->sched_engine->tasklet));
+ engine->sched_engine->tasklet.callback = nop_submission_tasklet;
spin_unlock_irqrestore(&engine->sched_engine->lock, flags);
rcu_read_unlock();
@@ -3082,14 +3085,14 @@ 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));
+ GEM_BUG_ON(!reset_in_progress(engine));
/* And kick in case we missed a new request submission. */
- if (__tasklet_enable(&execlists->tasklet))
+ if (__tasklet_enable(&engine->sched_engine->tasklet))
__execlists_kick(execlists);
ENGINE_TRACE(engine, "depth->%d\n",
- atomic_read(&execlists->tasklet.count));
+ atomic_read(&engine->sched_engine->tasklet.count));
}
static void gen8_logical_ring_enable_irq(struct intel_engine_cs *engine)
@@ -3153,8 +3156,6 @@ static void kick_execlists(const struct i915_request *rq, int prio)
inflight->fence.context, inflight->fence.seqno,
inflight->sched.attr.priority);
- sched_engine->queue_priority_hint = prio;
-
/*
* Allow preemption of low -> normal -> high, but we do
* not allow low priority tasks to preempt other low priority
@@ -3163,7 +3164,7 @@ static void kick_execlists(const struct i915_request *rq, int prio)
* so kiss.
*/
if (prio >= max(I915_PRIORITY_NORMAL, rq_prio(inflight)))
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&sched_engine->tasklet);
unlock:
rcu_read_unlock();
@@ -3174,7 +3175,7 @@ static void execlists_set_default_submission(struct intel_engine_cs *engine)
engine->submit_request = execlists_submit_request;
engine->sched_engine->schedule = i915_schedule;
engine->sched_engine->kick_backend = kick_execlists;
- engine->execlists.tasklet.callback = execlists_submission_tasklet;
+ engine->sched_engine->tasklet.callback = execlists_submission_tasklet;
}
static void execlists_shutdown(struct intel_engine_cs *engine)
@@ -3182,7 +3183,7 @@ 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);
+ tasklet_kill(&engine->sched_engine->tasklet);
}
static void execlists_release(struct intel_engine_cs *engine)
@@ -3298,7 +3299,7 @@ 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_engine->tasklet, execlists_submission_tasklet);
timer_setup(&engine->execlists.timer, execlists_timeslice, 0);
timer_setup(&engine->execlists.preempt, execlists_preempt, 0);
@@ -3380,7 +3381,7 @@ 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);
+ tasklet_kill(&ve->base.sched_engine->tasklet);
/* Decouple ourselves from the siblings, no more access allowed. */
for (n = 0; n < ve->num_siblings; n++) {
@@ -3392,13 +3393,13 @@ static void rcu_virtual_context_destroy(struct work_struct *wrk)
spin_lock_irq(&sibling->sched_engine->lock);
- /* Detachment is lazily performed in the execlists tasklet */
+ /* Detachment is lazily performed in the sched_engine->tasklet */
if (!RB_EMPTY_NODE(node))
rb_erase_cached(node, &sibling->execlists.virtual);
spin_unlock_irq(&sibling->sched_engine->lock);
}
- GEM_BUG_ON(__tasklet_is_scheduled(&ve->base.execlists.tasklet));
+ GEM_BUG_ON(__tasklet_is_scheduled(&ve->base.sched_engine->tasklet));
GEM_BUG_ON(!list_empty(virtual_queue(ve)));
lrc_fini(&ve->context);
@@ -3545,9 +3546,11 @@ static intel_engine_mask_t virtual_submission_mask(struct virtual_engine *ve)
static void virtual_submission_tasklet(struct tasklet_struct *t)
{
+ struct i915_sched_engine *sched_engine =
+ from_tasklet(sched_engine, t, tasklet);
struct virtual_engine * const ve =
- from_tasklet(ve, t, base.execlists.tasklet);
- const int prio = READ_ONCE(ve->base.sched_engine->queue_priority_hint);
+ (struct virtual_engine *)sched_engine->engine;
+ const int prio = READ_ONCE(sched_engine->queue_priority_hint);
intel_engine_mask_t mask;
unsigned int n;
@@ -3616,7 +3619,7 @@ static void virtual_submission_tasklet(struct tasklet_struct *t)
GEM_BUG_ON(RB_EMPTY_NODE(&node->rb));
node->prio = prio;
if (first && prio > sibling->sched_engine->queue_priority_hint)
- tasklet_hi_schedule(&sibling->execlists.tasklet);
+ tasklet_hi_schedule(&sibling->sched_engine->tasklet);
unlock_engine:
spin_unlock_irq(&sibling->sched_engine->lock);
@@ -3657,7 +3660,7 @@ 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);
+ tasklet_hi_schedule(&ve->base.sched_engine->tasklet);
unlock:
spin_unlock_irqrestore(&ve->base.sched_engine->lock, flags);
@@ -3751,6 +3754,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
err = -ENOMEM;
goto err_put;
}
+ ve->base.sched_engine->engine = &ve->base;
ve->base.cops = &virtual_context_ops;
ve->base.request_alloc = execlists_request_alloc;
@@ -3761,7 +3765,7 @@ intel_execlists_create_virtual(struct intel_engine_cs **siblings,
ve->base.bond_execute = virtual_bond_execute;
INIT_LIST_HEAD(virtual_queue(ve));
- tasklet_setup(&ve->base.execlists.tasklet, virtual_submission_tasklet);
+ tasklet_setup(&ve->base.sched_engine->tasklet, virtual_submission_tasklet);
intel_context_init(&ve->context, &ve->base);
@@ -3789,7 +3793,7 @@ 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_engine->tasklet.callback !=
execlists_submission_tasklet) {
err = -ENODEV;
goto err_put;
diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c
index a49fd3039f13..bd005c1b6fd5 100644
--- a/drivers/gpu/drm/i915/gt/mock_engine.c
+++ b/drivers/gpu/drm/i915/gt/mock_engine.c
@@ -349,6 +349,7 @@ int mock_engine_init(struct intel_engine_cs *engine)
engine->sched_engine = i915_sched_engine_create(ENGINE_MOCK);
if (!engine->sched_engine)
return -ENOMEM;
+ engine->sched_engine->engine = engine;
intel_engine_init_execlists(engine);
intel_engine_init__pm(engine);
diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm/i915/gt/selftest_execlists.c
index 5cc7648d1e5a..2554a2f343b4 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);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
timeout += jiffies;
do {
@@ -606,9 +606,9 @@ static int live_hold_reset(void *arg)
err = -EBUSY;
goto out;
}
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&engine->sched_engine->tasklet);
- engine->execlists.tasklet.callback(&engine->execlists.tasklet);
+ engine->sched_engine->tasklet.callback(&engine->sched_engine->tasklet);
GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
i915_request_get(rq);
@@ -618,7 +618,7 @@ 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(&engine->sched_engine->tasklet);
clear_and_wake_up_bit(I915_RESET_ENGINE + id,
>->reset.flags);
local_bh_enable();
@@ -1183,7 +1183,7 @@ static int live_timeslice_rewind(void *arg)
while (i915_request_is_active(rq[A2])) { /* semaphore yield! */
/* Wait for the timeslice to kick in */
del_timer(&engine->execlists.timer);
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
intel_engine_flush_submission(engine);
}
/* -> ELSP[] = { { A:rq1 }, { B:rq1 } } */
@@ -4593,9 +4593,9 @@ static int reset_virtual_engine(struct intel_gt *gt,
err = -EBUSY;
goto out_heartbeat;
}
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&engine->sched_engine->tasklet);
- engine->execlists.tasklet.callback(&engine->execlists.tasklet);
+ engine->sched_engine->tasklet.callback(&engine->sched_engine->tasklet);
GEM_BUG_ON(execlists_active(&engine->execlists) != rq);
/* Fake a preemption event; failed of course */
@@ -4612,7 +4612,7 @@ 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(&engine->sched_engine->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 e57dc900ae8d..cbcb800e2ca0 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -1702,7 +1702,7 @@ 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 = &engine->sched_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 d8f6623524e8..6a3a0d89dcd2 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);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
timeout += jiffies;
do {
@@ -1613,12 +1613,12 @@ static void garbage_reset(struct intel_engine_cs *engine,
local_bh_disable();
if (!test_and_set_bit(bit, lock)) {
- tasklet_disable(&engine->execlists.tasklet);
+ tasklet_disable(&engine->sched_engine->tasklet);
if (!rq->fence.error)
__intel_engine_reset_bh(engine, NULL);
- tasklet_enable(&engine->execlists.tasklet);
+ tasklet_enable(&engine->sched_engine->tasklet);
clear_and_wake_up_bit(bit, lock);
}
local_bh_enable();
diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c
index 8784257ec808..7a50c9f4071b 100644
--- a/drivers/gpu/drm/i915/gt/selftest_reset.c
+++ b/drivers/gpu/drm/i915/gt/selftest_reset.c
@@ -321,7 +321,7 @@ 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 = &engine->sched_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 7ed21670ef14..95c6f6af4047 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -241,8 +241,9 @@ static void __guc_dequeue(struct intel_engine_cs *engine)
static void guc_submission_tasklet(struct tasklet_struct *t)
{
- struct intel_engine_cs * const engine =
- from_tasklet(engine, t, execlists.tasklet);
+ struct i915_sched_engine *sched_engine =
+ from_tasklet(sched_engine, t, tasklet);
+ struct intel_engine_cs * const engine = sched_engine->engine;
struct intel_engine_execlists * const execlists = &engine->execlists;
struct i915_request **port, *rq;
unsigned long flags;
@@ -272,14 +273,12 @@ static void cs_irq_handler(struct intel_engine_cs *engine, u16 iir)
{
if (iir & GT_RENDER_USER_INTERRUPT) {
intel_engine_signal_breadcrumbs(engine);
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
}
}
static void guc_reset_prepare(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
-
ENGINE_TRACE(engine, "\n");
/*
@@ -291,7 +290,7 @@ 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);
+ __tasklet_disable_sync_once(&engine->sched_engine->tasklet);
}
static void guc_reset_state(struct intel_context *ce,
@@ -395,14 +394,12 @@ static void guc_reset_cancel(struct intel_engine_cs *engine)
static void guc_reset_finish(struct intel_engine_cs *engine)
{
- struct intel_engine_execlists * const execlists = &engine->execlists;
-
- if (__tasklet_enable(&execlists->tasklet))
+ if (__tasklet_enable(&engine->sched_engine->tasklet))
/* And kick in case we missed a new request submission. */
- tasklet_hi_schedule(&execlists->tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
ENGINE_TRACE(engine, "depth->%d\n",
- atomic_read(&execlists->tasklet.count));
+ atomic_read(&engine->sched_engine->tasklet.count));
}
/*
@@ -546,7 +543,7 @@ static void guc_submit_request(struct i915_request *rq)
GEM_BUG_ON(i915_sched_engine_is_empty(engine->sched_engine));
GEM_BUG_ON(list_empty(&rq->sched.link));
- tasklet_hi_schedule(&engine->execlists.tasklet);
+ tasklet_hi_schedule(&engine->sched_engine->tasklet);
spin_unlock_irqrestore(&engine->sched_engine->lock, flags);
}
@@ -626,7 +623,7 @@ static void guc_release(struct intel_engine_cs *engine)
{
engine->sanitize = NULL; /* no longer in control, nothing to sanitize */
- tasklet_kill(&engine->execlists.tasklet);
+ tasklet_kill(&engine->sched_engine->tasklet);
intel_engine_cleanup_common(engine);
lrc_fini_wa_ctx(engine);
@@ -705,7 +702,7 @@ 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_engine->tasklet, guc_submission_tasklet);
guc_default_vfuncs(engine);
guc_default_irqs(engine);
diff --git a/drivers/gpu/drm/i915/i915_scheduler.c b/drivers/gpu/drm/i915/i915_scheduler.c
index 3d36e4447b5d..6f082579ee9e 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.c
+++ b/drivers/gpu/drm/i915/i915_scheduler.c
@@ -436,6 +436,7 @@ void i915_sched_engine_free(struct kref *kref)
struct i915_sched_engine *sched_engine =
container_of(kref, typeof(*sched_engine), ref);
+ tasklet_kill(&sched_engine->tasklet); /* flush the callback */
kfree(sched_engine);
}
diff --git a/drivers/gpu/drm/i915/i915_scheduler.h b/drivers/gpu/drm/i915/i915_scheduler.h
index 0014745bda30..650ab8e0db9f 100644
--- a/drivers/gpu/drm/i915/i915_scheduler.h
+++ b/drivers/gpu/drm/i915/i915_scheduler.h
@@ -79,6 +79,20 @@ i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine)
sched_engine->no_priolist = false;
}
+static inline void
+i915_sched_engine_active_lock_bh(struct i915_sched_engine *sched_engine)
+{
+ local_bh_disable(); /* prevent local softirq and lock recursion */
+ tasklet_lock(&sched_engine->tasklet);
+}
+
+static inline void
+i915_sched_engine_active_unlock_bh(struct i915_sched_engine *sched_engine)
+{
+ tasklet_unlock(&sched_engine->tasklet);
+ local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
+}
+
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 8b3af536e6cf..9d79514450de 100644
--- a/drivers/gpu/drm/i915/i915_scheduler_types.h
+++ b/drivers/gpu/drm/i915/i915_scheduler_types.h
@@ -103,6 +103,11 @@ struct i915_sched_engine {
struct list_head requests;
struct list_head hold; /* ready requests, but on hold */
+ /**
+ * @tasklet: softirq tasklet for bottom handler
+ */
+ struct tasklet_struct tasklet;
+
/**
* @default_priolist: priority list for I915_PRIORITY_NORMAL
*/
@@ -132,6 +137,9 @@ struct i915_sched_engine {
*/
bool no_priolist;
+ /* Back pointer to engine */
+ struct intel_engine_cs *engine;
+
/* Kick backend */
void (*kick_backend)(const struct i915_request *rq,
int prio);
--
2.28.0
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