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<p style="margin:0in;font-family:Calibri;font-size:11.0pt"> </p>
<p style="margin:0in;font-family:Calibri;font-size:11.0pt">Acked-by:
Sunil
Khatri <a class="moz-txt-link-rfc2396E" href="mailto:sunil.khatri@amd.com"><sunil.khatri@amd.com></a></p>
<div class="moz-cite-prefix">On 4/12/2025 12:18 AM, Alex Deucher
wrote:<br>
</div>
<blockquote type="cite" cite="mid:20250411184825.2890189-10-alexander.deucher@amd.com">
<pre wrap="" class="moz-quote-pre">Enforce isolation serializes access to the GFX IP. User
queues are isolated in the MES scheduler, but we still
need to serialize between kernel queues and user queues.
For enforce isolation, group KGD user queues with KFD user
queues.
Signed-off-by: Alex Deucher <a class="moz-txt-link-rfc2396E" href="mailto:alexander.deucher@amd.com"><alexander.deucher@amd.com></a>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 34 ++++++++++++----------
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 6 ++--
3 files changed, 22 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e7398e70d6795..fdb7a6d4c57d9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4362,7 +4362,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
amdgpu_sync_create(&adev->isolation[i].active);
amdgpu_sync_create(&adev->isolation[i].prev);
}
- mutex_init(&adev->gfx.kfd_sch_mutex);
+ mutex_init(&adev->gfx.userq_sch_mutex);
mutex_init(&adev->gfx.workload_profile_mutex);
mutex_init(&adev->vcn.workload_profile_mutex);
mutex_init(&adev->userq_mutex);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 7fc4e62536e10..7ccab1268e7ee 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1947,39 +1947,41 @@ void amdgpu_gfx_cleaner_shader_init(struct amdgpu_device *adev,
static void amdgpu_gfx_kfd_sch_ctrl(struct amdgpu_device *adev, u32 idx,
bool enable)
{
- mutex_lock(&adev->gfx.kfd_sch_mutex);
+ mutex_lock(&adev->gfx.userq_sch_mutex);
if (enable) {
/* If the count is already 0, it means there's an imbalance bug somewhere.
* Note that the bug may be in a different caller than the one which triggers the
* WARN_ON_ONCE.
*/
- if (WARN_ON_ONCE(adev->gfx.kfd_sch_req_count[idx] == 0)) {
+ if (WARN_ON_ONCE(adev->gfx.userq_sch_req_count[idx] == 0)) {
dev_err(adev->dev, "Attempted to enable KFD scheduler when reference count is already zero\n");
goto unlock;
}
- adev->gfx.kfd_sch_req_count[idx]--;
+ adev->gfx.userq_sch_req_count[idx]--;
- if (adev->gfx.kfd_sch_req_count[idx] == 0 &&
- adev->gfx.kfd_sch_inactive[idx]) {
+ if (adev->gfx.userq_sch_req_count[idx] == 0 &&
+ adev->gfx.userq_sch_inactive[idx]) {
schedule_delayed_work(&adev->gfx.enforce_isolation[idx].work,
msecs_to_jiffies(adev->gfx.enforce_isolation_time[idx]));
}
} else {
- if (adev->gfx.kfd_sch_req_count[idx] == 0) {
+ if (adev->gfx.userq_sch_req_count[idx] == 0) {
cancel_delayed_work_sync(&adev->gfx.enforce_isolation[idx].work);
- if (!adev->gfx.kfd_sch_inactive[idx]) {
- amdgpu_amdkfd_stop_sched(adev, idx);
- adev->gfx.kfd_sch_inactive[idx] = true;
+ if (!adev->gfx.userq_sch_inactive[idx]) {
+ amdgpu_userq_stop_sched(adev, idx);
+ if (adev->kfd.init_complete)
+ amdgpu_amdkfd_stop_sched(adev, idx);
+ adev->gfx.userq_sch_inactive[idx] = true;
}
}
- adev->gfx.kfd_sch_req_count[idx]++;
+ adev->gfx.userq_sch_req_count[idx]++;
}
unlock:
- mutex_unlock(&adev->gfx.kfd_sch_mutex);
+ mutex_unlock(&adev->gfx.userq_sch_mutex);
}
/**
@@ -2024,12 +2026,12 @@ void amdgpu_gfx_enforce_isolation_handler(struct work_struct *work)
msecs_to_jiffies(1));
} else {
/* Tell KFD to resume the runqueue */
- if (adev->kfd.init_complete) {
- WARN_ON_ONCE(!adev->gfx.kfd_sch_inactive[idx]);
- WARN_ON_ONCE(adev->gfx.kfd_sch_req_count[idx]);
+ WARN_ON_ONCE(!adev->gfx.userq_sch_inactive[idx]);
+ WARN_ON_ONCE(adev->gfx.userq_sch_req_count[idx]);
+ amdgpu_userq_start_sched(adev, idx);
+ if (adev->kfd.init_complete)
amdgpu_amdkfd_start_sched(adev, idx);
- adev->gfx.kfd_sch_inactive[idx] = false;
- }
+ adev->gfx.userq_sch_inactive[idx] = false;
}
mutex_unlock(&adev->enforce_isolation_mutex);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index caaddab31023f..70b64bb1847c9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -475,9 +475,9 @@ struct amdgpu_gfx {
bool enable_cleaner_shader;
struct amdgpu_isolation_work enforce_isolation[MAX_XCP];
/* Mutex for synchronizing KFD scheduler operations */
- struct mutex kfd_sch_mutex;
- u64 kfd_sch_req_count[MAX_XCP];
- bool kfd_sch_inactive[MAX_XCP];
+ struct mutex userq_sch_mutex;
+ u64 userq_sch_req_count[MAX_XCP];
+ bool userq_sch_inactive[MAX_XCP];
unsigned long enforce_isolation_jiffies[MAX_XCP];
unsigned long enforce_isolation_time[MAX_XCP];
</pre>
</blockquote>
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