From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Rex Zhu <Rex.Zhu-5C7GfCeVMHo@public.gmane.org>,
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: [PATCH 1/9] drm/amdgpu: Limit vm max ctx number to 4096
Date: Thu, 6 Dec 2018 13:25:12 +0100 [thread overview]
Message-ID: <e85cb084-20fe-17cc-c9d2-af839c4d500e@gmail.com> (raw)
In-Reply-To: <1544098414-21588-1-git-send-email-Rex.Zhu-5C7GfCeVMHo@public.gmane.org>
Am 06.12.18 um 13:13 schrieb Rex Zhu:
> driver need to reserve resource for each ctx for
> some hw features. so add this limitation.
>
> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 2 +-
> 2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 33f5f2c..3ef5c3e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -161,6 +161,7 @@ struct amdgpu_mgpu_info
> extern int amdgpu_cik_support;
> #endif
>
> +#define AMDGPU_VM_MAX_NUM_CTX 4096
> #define AMDGPU_SG_THRESHOLD (256*1024*1024)
> #define AMDGPU_DEFAULT_GTT_SIZE_MB 3072ULL /* 3GB by default */
> #define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> index f9b5423..8edf54b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
> @@ -247,7 +247,7 @@ static int amdgpu_ctx_alloc(struct amdgpu_device *adev,
> return -ENOMEM;
>
> mutex_lock(&mgr->lock);
> - r = idr_alloc(&mgr->ctx_handles, ctx, 1, 0, GFP_KERNEL);
> + r = idr_alloc(&mgr->ctx_handles, ctx, 1, AMDGPU_VM_MAX_NUM_CTX, GFP_KERNEL);
> if (r < 0) {
> mutex_unlock(&mgr->lock);
> kfree(ctx);
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next prev parent reply other threads:[~2018-12-06 12:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-06 12:13 [PATCH 1/9] drm/amdgpu: Limit vm max ctx number to 4096 Rex Zhu
[not found] ` <1544098414-21588-1-git-send-email-Rex.Zhu-5C7GfCeVMHo@public.gmane.org>
2018-12-06 12:25 ` Christian König [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-12-06 11:32 Rex Zhu
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