From: "Christian König" <christian.koenig@amd.com>
To: Jammy Zhou <Jammy.Zhou@amd.com>,
dri-devel@lists.freedesktop.org, maarten.lankhorst@canonical.com
Cc: alexander.deucher@amd.com
Subject: Re: [PATCH 2/2] dma-buf/fence: don't wait when specified timeout is zero
Date: Wed, 21 Jan 2015 12:09:25 +0100 [thread overview]
Message-ID: <54BF88E5.1070508@amd.com> (raw)
In-Reply-To: <1421836549-4539-2-git-send-email-Jammy.Zhou@amd.com>
Am 21.01.2015 um 11:35 schrieb Jammy Zhou:
> When specified timeout is zero for fence_wait_timeout, just check if the fence
> is signaled or not without wait.
>
> Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
> ---
> drivers/dma-buf/fence.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c
> index e554111..50ef8bd 100644
> --- a/drivers/dma-buf/fence.c
> +++ b/drivers/dma-buf/fence.c
> @@ -159,6 +159,9 @@ fence_wait_timeout(struct fence *fence, bool intr, signed long timeout)
> if (WARN_ON(timeout < 0))
> return -EINVAL;
>
> + if (timeout == 0)
> + return fence_is_signaled(fence);
> +
> trace_fence_wait_start(fence);
> ret = fence->ops->wait(fence, intr, timeout);
> trace_fence_wait_end(fence);
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prev parent reply other threads:[~2015-01-21 11:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-21 10:35 [PATCH 1/2] reservation: wait only with non-zero timeout specified (v3) Jammy Zhou
2015-01-21 10:31 ` Maarten Lankhorst
2015-01-21 16:16 ` Alex Deucher
2015-01-21 17:30 ` Maarten Lankhorst
2015-01-21 17:34 ` Alex Deucher
2015-01-22 10:00 ` Sumit Semwal
2015-01-21 10:35 ` [PATCH 2/2] dma-buf/fence: don't wait when specified timeout is zero Jammy Zhou
2015-01-21 10:31 ` Maarten Lankhorst
2015-01-21 11:09 ` Christian König [this message]
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