617e87c05c
When GuC submission is enabled, the GuC controls engine resets. Rather than explicitly triggering a reset, the driver must submit a hanging context to GuC and wait for the reset to occur. Conversely, one of the tests specifically sends hanging batches to the engines but wants them to sit around until a manual reset of the full GT (including GuC itself). That means disabling GuC based engine resets to prevent those from killing the hanging batch too soon. So, add support to the scheduling policy helper for disabling resets as well as making them quicker! In GuC submission mode, the 'is engine idle' test basically turns into 'is engine PM wakelock held'. Independently, there is a heartbeat disable helper function that the tests use. For unexplained reasons, this acquires the engine wakelock before disabling the heartbeat and only releases it when re-enabling the heartbeat. As one of the tests tries to do a wait for idle in the middle of a heartbeat disabled section, it is therefore guaranteed to always fail. Added a 'no_pm' variant of the heartbeat helper that allows the engine to be asleep while also having heartbeats disabled. Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210727002348.97202-31-matthew.brost@intel.com
34 lines
813 B
C
34 lines
813 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef _INTEL_SELFTEST_SCHEDULER_HELPERS_H_
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#define _INTEL_SELFTEST_SCHEDULER_HELPERS_H_
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#include <linux/types.h>
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struct i915_request;
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struct intel_engine_cs;
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struct intel_selftest_saved_policy {
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u32 flags;
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u32 reset;
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u64 timeslice;
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u64 preempt_timeout;
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};
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enum selftest_scheduler_modify {
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SELFTEST_SCHEDULER_MODIFY_NO_HANGCHECK = 0,
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SELFTEST_SCHEDULER_MODIFY_FAST_RESET,
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};
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int intel_selftest_modify_policy(struct intel_engine_cs *engine,
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struct intel_selftest_saved_policy *saved,
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enum selftest_scheduler_modify modify_type);
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int intel_selftest_restore_policy(struct intel_engine_cs *engine,
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struct intel_selftest_saved_policy *saved);
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int intel_selftest_wait_for_rq(struct i915_request *rq);
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#endif
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