From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH 31/57] drm/i915/gt: Declare when we enabled timeslicing
Date: Thu, 4 Feb 2021 15:26:26 +0000 [thread overview]
Message-ID: <e1b2bcfb-e2ef-5eac-269b-201330c60cbe@linux.intel.com> (raw)
In-Reply-To: <20210201085715.27435-31-chris@chris-wilson.co.uk>
On 01/02/2021 08:56, Chris Wilson wrote:
> Let userspace know if they can trust timeslicing by including it as part
> of the I915_PARAM_HAS_SCHEDULER::I915_SCHEDULER_CAP_TIMESLICING
>
> v2: Only declare timeslicing if we can safely preempt userspace.
>
> Fixes: 8ee36e048c98 ("drm/i915/execlists: Minimalistic timeslicing")
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_engine_user.c | 26 +++++++++++++++------
> include/uapi/drm/i915_drm.h | 1 +
> 2 files changed, 20 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_user.c b/drivers/gpu/drm/i915/gt/intel_engine_user.c
> index 64eccdf32a22..50911fbe6368 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_user.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_user.c
> @@ -90,13 +90,17 @@ static void sort_engines(struct drm_i915_private *i915,
> static void set_scheduler_caps(struct drm_i915_private *i915)
> {
> static const struct {
> - u8 engine;
> - u8 sched;
> - } map[] = {
> + u8 flag;
> + u8 cap;
> + } engine_map[] = {
> #define MAP(x, y) { ilog2(I915_ENGINE_##x), ilog2(I915_SCHEDULER_CAP_##y) }
> MAP(HAS_PREEMPTION, PREEMPTION),
> MAP(HAS_SEMAPHORES, SEMAPHORES),
> MAP(SUPPORTS_STATS, ENGINE_BUSY_STATS),
> +#undef MAP
> + }, sched_map[] = {
> +#define MAP(x, y) { ilog2(I915_SCHED_##x), ilog2(I915_SCHEDULER_CAP_##y) }
> + MAP(HAS_TIMESLICES_BIT, TIMESLICING),
> #undef MAP
> };
> struct intel_engine_cs *engine;
> @@ -105,6 +109,7 @@ static void set_scheduler_caps(struct drm_i915_private *i915)
> enabled = 0;
> disabled = 0;
> for_each_uabi_engine(engine, i915) { /* all engines must agree! */
> + struct i915_sched *se = intel_engine_get_scheduler(engine);
> int i;
>
> if (intel_engine_has_scheduler(engine))
> @@ -114,11 +119,18 @@ static void set_scheduler_caps(struct drm_i915_private *i915)
> disabled |= (I915_SCHEDULER_CAP_ENABLED |
> I915_SCHEDULER_CAP_PRIORITY);
>
> - for (i = 0; i < ARRAY_SIZE(map); i++) {
> - if (engine->flags & BIT(map[i].engine))
> - enabled |= BIT(map[i].sched);
> + for (i = 0; i < ARRAY_SIZE(engine_map); i++) {
> + if (engine->flags & BIT(engine_map[i].flag))
> + enabled |= BIT(engine_map[i].cap);
> else
> - disabled |= BIT(map[i].sched);
> + disabled |= BIT(engine_map[i].cap);
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(sched_map); i++) {
> + if (se->flags & BIT(sched_map[i].flag))
> + enabled |= BIT(sched_map[i].cap);
> + else
> + disabled |= BIT(sched_map[i].cap);
> }
> }
>
> diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
> index 1987e2ea79a3..cda0f391d965 100644
> --- a/include/uapi/drm/i915_drm.h
> +++ b/include/uapi/drm/i915_drm.h
> @@ -524,6 +524,7 @@ typedef struct drm_i915_irq_wait {
> #define I915_SCHEDULER_CAP_PREEMPTION (1ul << 2)
> #define I915_SCHEDULER_CAP_SEMAPHORES (1ul << 3)
> #define I915_SCHEDULER_CAP_ENGINE_BUSY_STATS (1ul << 4)
> +#define I915_SCHEDULER_CAP_TIMESLICING (1ul << 5)
>
> #define I915_PARAM_HUC_STATUS 42
>
>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Regards,
Tvrtko
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next prev parent reply other threads:[~2021-02-04 15:26 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 8:56 [Intel-gfx] [PATCH 01/57] drm/i915/gt: Restrict the GT clock override to just Icelake Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 02/57] drm/i915/selftests: Exercise relative mmio paths to non-privileged registers Chris Wilson
2021-02-01 14:34 ` Mika Kuoppala
2021-02-01 8:56 ` [Intel-gfx] [PATCH 03/57] drm/i915/selftests: Exercise cross-process context isolation Chris Wilson
2021-02-01 16:37 ` Mika Kuoppala
2021-02-01 8:56 ` [Intel-gfx] [PATCH 04/57] drm/i915: Protect against request freeing during cancellation on wedging Chris Wilson
2021-02-02 9:55 ` Mika Kuoppala
2021-02-01 8:56 ` [Intel-gfx] [PATCH 05/57] drm/i915: Take rcu_read_lock for querying fence's driver/timeline names Chris Wilson
2021-02-02 18:33 ` Mika Kuoppala
2021-02-01 8:56 ` [Intel-gfx] [PATCH 06/57] drm/i915/gt: Always flush the submission queue on checking for idle Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 07/57] drm/i915/gt: Move engine setup out of set_default_submission Chris Wilson
2021-02-02 11:57 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 08/57] drm/i915/gt: Move submission_method into intel_gt Chris Wilson
2021-02-02 12:03 ` Tvrtko Ursulin
2021-02-02 12:18 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 09/57] drm/i915: Replace engine->schedule() with a known request operation Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 10/57] drm/i915: Restructure priority inheritance Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 11/57] drm/i915/selftests: Measure set-priority duration Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 12/57] drm/i915/selftests: Exercise priority inheritance around an engine loop Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 13/57] drm/i915/selftests: Force a rewind if at first we don't succeed Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 14/57] drm/i915: Improve DFS for priority inheritance Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 15/57] drm/i915: Extract request submission from execlists Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 16/57] drm/i915: Extract request rewinding " Chris Wilson
2021-02-02 13:08 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 17/57] drm/i915: Extract request suspension from the execlists Chris Wilson
2021-02-02 13:15 ` Tvrtko Ursulin
2021-02-02 13:26 ` Chris Wilson
2021-02-02 13:32 ` Tvrtko Ursulin
2021-02-02 13:27 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 18/57] drm/i915: Extract the ability to defer and rerun a request later Chris Wilson
2021-02-02 13:18 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 19/57] drm/i915: Fix the iterative dfs for defering requests Chris Wilson
2021-02-02 14:10 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 20/57] drm/i915: Wrap access to intel_engine.active Chris Wilson
2021-02-04 11:07 ` Tvrtko Ursulin
2021-02-04 11:18 ` Chris Wilson
2021-02-04 11:56 ` Chris Wilson
2021-02-04 12:08 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 21/57] drm/i915: Move common active lists from engine to i915_scheduler Chris Wilson
2021-02-04 11:12 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 22/57] drm/i915: Move scheduler queue Chris Wilson
2021-02-04 11:19 ` Tvrtko Ursulin
2021-02-04 11:32 ` Chris Wilson
2021-02-04 11:40 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 23/57] drm/i915: Move tasklet from execlists to sched Chris Wilson
2021-02-04 14:06 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 24/57] drm/i915/gt: Only kick the scheduler on timeslice/preemption change Chris Wilson
2021-02-04 14:09 ` Tvrtko Ursulin
2021-02-04 14:43 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 25/57] drm/i915: Move submit_request to i915_sched_engine Chris Wilson
2021-02-04 14:13 ` Tvrtko Ursulin
2021-02-04 14:45 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 26/57] drm/i915: Move finding the current active request to the scheduler Chris Wilson
2021-02-04 14:30 ` Tvrtko Ursulin
2021-02-04 14:59 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 27/57] drm/i915: Show execlists queues when dumping state Chris Wilson
2021-02-04 15:04 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 28/57] drm/i915: Wrap i915_request_use_semaphores() Chris Wilson
2021-02-04 15:05 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 29/57] drm/i915: Move scheduler flags Chris Wilson
2021-02-04 15:14 ` Tvrtko Ursulin
2021-02-04 16:05 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 30/57] drm/i915: Move timeslicing flag to scheduler Chris Wilson
2021-02-04 15:18 ` Tvrtko Ursulin
2021-02-04 16:11 ` Chris Wilson
2021-02-05 9:48 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 31/57] drm/i915/gt: Declare when we enabled timeslicing Chris Wilson
2021-02-04 15:26 ` Tvrtko Ursulin [this message]
2021-02-01 8:56 ` [Intel-gfx] [PATCH 32/57] drm/i915: Move needs-breadcrumb flags to scheduler Chris Wilson
2021-02-04 15:28 ` Tvrtko Ursulin
2021-02-04 16:12 ` Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 33/57] drm/i915: Move busywaiting control to the scheduler Chris Wilson
2021-02-04 15:32 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 34/57] drm/i915: Move preempt-reset flag " Chris Wilson
2021-02-04 15:34 ` Tvrtko Ursulin
2021-02-01 8:56 ` [Intel-gfx] [PATCH 35/57] drm/i915: Replace priolist rbtree with a skiplist Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 36/57] drm/i915: Wrap cmpxchg64 with try_cmpxchg64() helper Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 37/57] drm/i915: Fair low-latency scheduling Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 38/57] drm/i915/gt: Specify a deadline for the heartbeat Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 39/57] drm/i915: Extend the priority boosting for the display with a deadline Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 40/57] drm/i915/gt: Support virtual engine queues Chris Wilson
2021-02-01 8:56 ` [Intel-gfx] [PATCH 41/57] drm/i915: Move saturated workload detection back to the context Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 42/57] drm/i915: Bump default timeslicing quantum to 5ms Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 43/57] drm/i915/gt: Delay taking irqoff for execlists submission Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 44/57] drm/i915/gt: Wrap intel_timeline.has_initial_breadcrumb Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 45/57] drm/i915/gt: Track timeline GGTT offset separately from subpage offset Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 46/57] drm/i915/gt: Add timeline "mode" Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 47/57] drm/i915/gt: Use indices for writing into relative timelines Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 48/57] drm/i915/selftests: Exercise relative timeline modes Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 49/57] drm/i915/gt: Use ppHWSP for unshared non-semaphore related timelines Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 50/57] Restore "drm/i915: drop engine_pin/unpin_breadcrumbs_irq" Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 51/57] drm/i915/gt: Couple tasklet scheduling for all CS interrupts Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 52/57] drm/i915/gt: Support creation of 'internal' rings Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 53/57] drm/i915/gt: Use client timeline address for seqno writes Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 54/57] drm/i915/gt: Infrastructure for ring scheduling Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 55/57] drm/i915/gt: Implement ring scheduler for gen4-7 Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 56/57] drm/i915/gt: Enable ring scheduling for gen5-7 Chris Wilson
2021-02-01 8:57 ` [Intel-gfx] [PATCH 57/57] drm/i915: Support secure dispatch on gen6/gen7 Chris Wilson
2021-02-01 14:13 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [01/57] drm/i915/gt: Restrict the GT clock override to just Icelake Patchwork
2021-02-01 14:15 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-02-01 14:15 ` [Intel-gfx] [PATCH 01/57] " Mika Kuoppala
2021-02-01 14:41 ` [Intel-gfx] ✓ Fi.CI.BAT: success for series starting with [01/57] " Patchwork
2021-02-01 19:33 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
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