From: Nirmoy <nirmodas@amd.com>
To: Nirmoy Das <nirmoy.das@amd.com>, amd-gfx@lists.freedesktop.org
Cc: alexander.deucher@amd.com, pmenzel+amd-gfx@molgen.mpg.de,
Tianci.Yin@amd.com, Leo.Liu@amd.com, christian.koenig@amd.com
Subject: Re: [PATCH 1/1] drm/amdgpu: disable gpu-sched load balance for uvd_enc
Date: Wed, 2 Sep 2020 12:12:21 +0200 [thread overview]
Message-ID: <ed2e1411-7883-b01b-b36e-2431e833af2e@amd.com> (raw)
In-Reply-To: <20200902100837.43353-1-nirmoy.das@amd.com>
Please ignore this.
On 9/2/20 12:08 PM, Nirmoy Das wrote:
> On hardware with multiple uvd instances, dependent uvd_enc jobs
> may get scheduled to different uvd instances. Because uvd_enc
> jobs retain hw context, dependent jobs should always run on the
> same uvd instance. This patch disables GPU scheduler's load balancer
> for a context that binds jobs from same the context to a uvd
> instance.
from same the context --> from the same context
>
> Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> index 7cd398d25498..c80d8339f58c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> @@ -114,8 +114,10 @@ static int amdgpu_ctx_init_entity(struct amdgpu_ctx *ctx, u32 hw_ip,
> scheds = adev->gpu_sched[hw_ip][hw_prio].sched;
> num_scheds = adev->gpu_sched[hw_ip][hw_prio].num_scheds;
>
> + /* disable load balance if the hw engine retains context among dependent jobs */
> if (hw_ip == AMDGPU_HW_IP_VCN_ENC ||
> hw_ip == AMDGPU_HW_IP_VCN_DEC ||
> + hw_ip == AMDGPU_HW_IP_UVD_ENC ||
> hw_ip == AMDGPU_HW_IP_UVD) {
> sched = drm_sched_pick_best(scheds, num_scheds);
> scheds = &sched;
> --
> 2.28.0
>
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next prev parent reply other threads:[~2020-09-02 10:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 10:08 [PATCH 1/1] drm/amdgpu: disable gpu-sched load balance for uvd_enc Nirmoy Das
2020-09-02 10:12 ` Nirmoy [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-09-02 10:15 Nirmoy Das
2020-09-02 11:07 ` Christian König
2020-09-03 8:38 ` Nirmoy
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