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drm/xe/guc_submit: Introduce pause/unpause() helpers for PF

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Introduce pause/unpause() helpers which stop/start further runs of
submission tasks on given GuC and can be called from PF context. This
is in preparation of usecases where we simply need to stop/start the
scheduler without losing GuC state and don't require dealing with VF
migration.

v7: Reword commit message (Matthew Brost)

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20251030122357.128825-3-raag.jadav@intel.com
This commit is contained in:
Raag Jadav
2025-10-30 17:53:55 +05:30
committed by Ashutosh Dixit
parent 99234edab8
commit 726ceb5716
2 changed files with 32 additions and 0 deletions
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30
drivers/gpu/drm/xe/xe_guc_submit.c
View File

@@ -2168,6 +2168,21 @@ static void guc_exec_queue_pause(struct xe_guc *guc, struct xe_exec_queue *q)
}
}
/**
* xe_guc_submit_pause - Stop further runs of submission tasks on given GuC.
* @guc: the &xe_guc struct instance whose scheduler is to be disabled
*/
void xe_guc_submit_pause(struct xe_guc *guc)
{
struct xe_exec_queue *q;
unsigned long index;
mutex_lock(&guc->submission_state.lock);
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q)
xe_sched_submission_stop(&q->guc->sched);
mutex_unlock(&guc->submission_state.lock);
}
/**
* xe_guc_submit_pause_vf - Stop further runs of submission tasks for VF.
* @guc: the &xe_guc struct instance whose scheduler is to be disabled
@@ -2343,6 +2358,21 @@ static void guc_exec_queue_unpause(struct xe_guc *guc, struct xe_exec_queue *q)
xe_sched_submission_resume_tdr(sched);
}
/**
* xe_guc_submit_unpause - Allow further runs of submission tasks on given GuC.
* @guc: the &xe_guc struct instance whose scheduler is to be enabled
*/
void xe_guc_submit_unpause(struct xe_guc *guc)
{
struct xe_exec_queue *q;
unsigned long index;
mutex_lock(&guc->submission_state.lock);
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q)
xe_sched_submission_start(&q->guc->sched);
mutex_unlock(&guc->submission_state.lock);
}
/**
* xe_guc_submit_unpause_vf - Allow further runs of submission tasks for VF.
* @guc: the &xe_guc struct instance whose scheduler is to be enabled

2
drivers/gpu/drm/xe/xe_guc_submit.h
View File

@@ -20,8 +20,10 @@ int xe_guc_submit_reset_prepare(struct xe_guc *guc);
void xe_guc_submit_reset_wait(struct xe_guc *guc);
void xe_guc_submit_stop(struct xe_guc *guc);
int xe_guc_submit_start(struct xe_guc *guc);
void xe_guc_submit_pause(struct xe_guc *guc);
void xe_guc_submit_pause_abort(struct xe_guc *guc);
void xe_guc_submit_pause_vf(struct xe_guc *guc);
void xe_guc_submit_unpause(struct xe_guc *guc);
void xe_guc_submit_unpause_vf(struct xe_guc *guc);
void xe_guc_submit_unpause_prepare_vf(struct xe_guc *guc);
void xe_guc_submit_wedge(struct xe_guc *guc);