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drm/xe/pf: Adjust scheduling priority based on policy change

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Local values of scheduling priorities need to be adjusted when
changing the schedule_if_idle policy as those are related.

Disabling schedule_if_idle policy forces the low priority, and
enabling schedule_if_idle policy forces the normal priority.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lukasz Laguna <lukasz.laguna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241106151301.2079-6-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2024-11-06 16:13:01 +01:00
parent 9d6aabe126
commit f9b982fbb4
1 changed files with 23 additions and 4 deletions
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27
drivers/gpu/drm/xe/xe_gt_sriov_pf_policy.c
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@@ -135,14 +135,33 @@ static int pf_update_policy_u32(struct xe_gt *gt, u16 key, u32 *policy, u32 valu
return 0;
}
static int pf_provision_sched_if_idle(struct xe_gt *gt, bool enable)
static void pf_bulk_reset_sched_priority(struct xe_gt *gt, u32 priority)
{
unsigned int total_vfs = 1 + xe_gt_sriov_pf_get_totalvfs(gt);
unsigned int n;
xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));
return pf_update_policy_bool(gt, GUC_KLV_VGT_POLICY_SCHED_IF_IDLE_KEY,
&gt->sriov.pf.policy.guc.sched_if_idle,
enable);
for (n = 0; n < total_vfs; n++)
gt->sriov.pf.vfs[n].config.sched_priority = priority;
}
static int pf_provision_sched_if_idle(struct xe_gt *gt, bool enable)
{
int err;
xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));
err = pf_update_policy_bool(gt, GUC_KLV_VGT_POLICY_SCHED_IF_IDLE_KEY,
&gt->sriov.pf.policy.guc.sched_if_idle,
enable);
if (!err)
pf_bulk_reset_sched_priority(gt, enable ? GUC_SCHED_PRIORITY_NORMAL :
GUC_SCHED_PRIORITY_LOW);
return err;
}
static int pf_reprovision_sched_if_idle(struct xe_gt *gt)