diff mbox series

dma-buf: Use atomic64_inc_return() in dma_buf_getfile()

Message ID 20241007083921.47525-1-ubizjak@gmail.com
State Accepted
Commit 0654196d7ea20934f90a87d1b523ef3b77fb021b
Headers show
Series dma-buf: Use atomic64_inc_return() in dma_buf_getfile() | expand

Commit Message

Uros Bizjak Oct. 7, 2024, 8:37 a.m. UTC
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
---
 drivers/dma-buf/dma-buf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Ricardo Ribalda Oct. 16, 2024, 1:04 a.m. UTC | #1
Hi Uros

Thanks for the email! We have fixed it in the latest version

Regards!

On Mon, 7 Oct 2024 at 18:30, Uros Bizjak <ubizjak@gmail.com> wrote:
>
> On Mon, Oct 7, 2024 at 11:21 AM Patchwork Integration
> <patchwork@media-ci.org> wrote:
> >
> > Dear Uros Bizjak:
> >
> > The unreliable Media-CI system has found some issues with your series.
> > Check the report at: https://linux-media.pages.freedesktop.org/-/users/patchwork/-/jobs/64723788/artifacts/report.htm
> >
> > Please fix your series, and upload a new version. If you have a patchwork
> > account, do not forget to mark the current series as Superseded.
> >
> > If you believe that the CI is wrong, kindly reply-all to this email.
>
> I don't think CI is correct in my case, the failure log says that I
> should prefix my patch with "media:":
>
> WARNING: ./0001-dma-buf-Use-atomic64_inc_return-in-dma_buf_getfile.patch:
> Missing 'media:' prefix in Subject
>
> But the patch is not specific to media, it is specific to dma-buf.
>
> Best regards,
> Uros.
diff mbox series

Patch

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 8892bc701a66..a3649db76add 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -558,7 +558,7 @@  static struct file *dma_buf_getfile(size_t size, int flags)
 	 * Override ->i_ino with the unique and dmabuffs specific
 	 * value.
 	 */
-	inode->i_ino = atomic64_add_return(1, &dmabuf_inode);
+	inode->i_ino = atomic64_inc_return(&dmabuf_inode);
 	flags &= O_ACCMODE | O_NONBLOCK;
 	file = alloc_file_pseudo(inode, dma_buf_mnt, "dmabuf",
 				 flags, &dma_buf_fops);