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Groups > linux.kernel > #1722701 > unrolled thread

[PATCH] drm/amdkfd: remove memset before memcpy

Started byHimanshu Jha <himanshujha199640@gmail.com>
First post2017-08-29 21:10 +0200
Last post2017-09-02 14:50 +0200
Articles 2 — 2 participants

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  [PATCH] drm/amdkfd: remove memset before memcpy Himanshu Jha <himanshujha199640@gmail.com> - 2017-08-29 21:10 +0200
    Re: [PATCH] drm/amdkfd: remove memset before memcpy Oded Gabbay <oded.gabbay@gmail.com> - 2017-09-02 14:50 +0200

#1722701 — [PATCH] drm/amdkfd: remove memset before memcpy

FromHimanshu Jha <himanshujha199640@gmail.com>
Date2017-08-29 21:10 +0200
Subject[PATCH] drm/amdkfd: remove memset before memcpy
Message-ID<ujU3D-6AB-7@gated-at.bofh.it>
calling memcpy immediately after memset with the same region of memory
makes memset redundant.

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.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

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#1725496

FromOded Gabbay <oded.gabbay@gmail.com>
Date2017-09-02 14:50 +0200
Message-ID<ulg26-317-7@gated-at.bofh.it>
In reply to#1722701
On Tue, Aug 29, 2017 at 10:03 PM, Himanshu Jha
<himanshujha199640@gmail.com> wrote:
> calling memcpy immediately after memset with the same region of memory
> makes memset redundant.
>
> Signed-off-by: Himanshu Jha <himanshujha199640@gmail.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

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