* [PATCH] amdgpu/psp: Adjust usleep_range in fence wait
@ 2026-02-10 7:52 Ce Sun
2026-02-10 8:05 ` Sun, Ce(Overlord)
0 siblings, 1 reply; 4+ messages in thread
From: Ce Sun @ 2026-02-10 7:52 UTC (permalink / raw)
To: amd-gfx; +Cc: Lijo.Lazar, Ce Sun
Tune the sleep interval in the PSP fence wait loop from 10-100us to 30-100us.
This adjustment results in an overall wait window of 600ms (30us * 20000 iterations)
to 2 seconds (100us * 20000 iterations), which guarantees that we can retrieve
the correct fence value
Signed-off-by: Ce Sun <cesun102@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index b0540b009e84..b08a57a07331 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -735,7 +735,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
ras_intr = amdgpu_ras_intr_triggered();
if (ras_intr)
break;
- usleep_range(10, 100);
+ usleep_range(30, 100);
amdgpu_device_invalidate_hdp(psp->adev, NULL);
}
--
2.34.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] amdgpu/psp: Adjust usleep_range in fence wait
2026-02-10 7:52 [PATCH] amdgpu/psp: Adjust usleep_range in fence wait Ce Sun
@ 2026-02-10 8:05 ` Sun, Ce(Overlord)
0 siblings, 0 replies; 4+ messages in thread
From: Sun, Ce(Overlord) @ 2026-02-10 8:05 UTC (permalink / raw)
To: amd-gfx@lists.freedesktop.org; +Cc: Lazar, Lijo
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[AMD Official Use Only - AMD Internal Distribution Only]
Ignore this, I will send the next one.
________________________________
From: Sun, Ce(Overlord) <Ce.Sun@amd.com>
Sent: Tuesday, February 10, 2026 3:52 PM
To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
Cc: Lazar, Lijo <Lijo.Lazar@amd.com>; Sun, Ce(Overlord) <Ce.Sun@amd.com>
Subject: [PATCH] amdgpu/psp: Adjust usleep_range in fence wait
Tune the sleep interval in the PSP fence wait loop from 10-100us to 30-100us.
This adjustment results in an overall wait window of 600ms (30us * 20000 iterations)
to 2 seconds (100us * 20000 iterations), which guarantees that we can retrieve
the correct fence value
Signed-off-by: Ce Sun <cesun102@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index b0540b009e84..b08a57a07331 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -735,7 +735,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
ras_intr = amdgpu_ras_intr_triggered();
if (ras_intr)
break;
- usleep_range(10, 100);
+ usleep_range(30, 100);
amdgpu_device_invalidate_hdp(psp->adev, NULL);
}
--
2.34.1
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] amdgpu/psp: Adjust usleep_range in fence wait
@ 2026-02-10 8:08 Ce Sun
2026-02-10 9:24 ` Lazar, Lijo
0 siblings, 1 reply; 4+ messages in thread
From: Ce Sun @ 2026-02-10 8:08 UTC (permalink / raw)
To: amd-gfx; +Cc: Lijo.Lazar, Ce Sun
Tune the sleep interval in the PSP fence wait loop from 10-100us to 60-100us.
This adjustment results in an overall wait window of 1.2s (60us * 20000 iterations)
to 2 seconds (100us * 20000 iterations), which guarantees that we can retrieve
the correct fence value
Signed-off-by: Ce Sun <cesun102@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index b0540b009e84..5eeea965032a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -735,7 +735,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
ras_intr = amdgpu_ras_intr_triggered();
if (ras_intr)
break;
- usleep_range(10, 100);
+ usleep_range(60, 100);
amdgpu_device_invalidate_hdp(psp->adev, NULL);
}
--
2.34.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] amdgpu/psp: Adjust usleep_range in fence wait
2026-02-10 8:08 Ce Sun
@ 2026-02-10 9:24 ` Lazar, Lijo
0 siblings, 0 replies; 4+ messages in thread
From: Lazar, Lijo @ 2026-02-10 9:24 UTC (permalink / raw)
To: Ce Sun, amd-gfx
On 10-Feb-26 1:38 PM, Ce Sun wrote:
> Tune the sleep interval in the PSP fence wait loop from 10-100us to 60-100us.
> This adjustment results in an overall wait window of 1.2s (60us * 20000 iterations)
> to 2 seconds (100us * 20000 iterations), which guarantees that we can retrieve
> the correct fence value
>
> Signed-off-by: Ce Sun <cesun102@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Thanks,
Lijo
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index b0540b009e84..5eeea965032a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -735,7 +735,7 @@ psp_cmd_submit_buf(struct psp_context *psp,
> ras_intr = amdgpu_ras_intr_triggered();
> if (ras_intr)
> break;
> - usleep_range(10, 100);
> + usleep_range(60, 100);
> amdgpu_device_invalidate_hdp(psp->adev, NULL);
> }
>
^ permalink raw reply [flat|nested] 4+ messages in thread
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