linux-kernel - Re: [PATCH] drm/amdkfd: remove memset before memcpy

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Message-ID: <CAFCwf11po8eqAMwx6yT9gZpDEUcmf9=jSqMw-74PxVXzS64RYQ@mail.gmail.com>
Date:   Sat, 2 Sep 2017 15:39:59 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     Himanshu Jha <himanshujha199640@...il.com>
Cc:     David Airlie <airlied@...ux.ie>,
        Alex Deucher <alexander.deucher@....com>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/amdkfd: remove memset before memcpy

On Tue, Aug 29, 2017 at 10:03 PM, Himanshu Jha
<himanshujha199640@...il.com> wrote:
> calling memcpy immediately after memset with the same region of memory
> makes memset redundant.
>
> Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> index 1cae95e..03bec76 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> @@ -143,7 +143,6 @@ int pqm_create_queue(struct process_queue_manager *pqm,
>         int num_queues = 0;
>         struct queue *cur;
>
> -       memset(&q_properties, 0, sizeof(struct queue_properties));
>         memcpy(&q_properties, properties, sizeof(struct queue_properties));
>         q = NULL;
>         kq = NULL;
> --
> 2.7.4
>

Thanks!
Applied to amdkfd -next tree

Oded