[v2] media: Optimize the code using vmalloc_array

[PATCH v2 0/3] media: Optimize the code using vmalloc_array

tanze posted 3 patches 3 months, 2 weeks ago

Diff against v1
Download series mbox

drivers/media/dvb-core/dmxdev.c               | 4 ++--
drivers/media/dvb-core/dvb_demux.c            | 9 +++++----
drivers/media/pci/pt1/pt1.c                   | 2 +-
drivers/media/test-drivers/vivid/vivid-core.c | 2 +-
4 files changed, 9 insertions(+), 8 deletions(-)

Expand all Fold all

[PATCH v2 0/3] media: Optimize the code using vmalloc_array

Posted by tanze 3 months, 2 weeks ago

Change array_size() to vmalloc_array(), Due to vmalloc_array() is optimized better,
uses fewer instructions, and handles overflow more concisely

v1->v2: Update patch #02 #03 due to typos CI robot detected some issues

v1:https://lore.kernel.org/all/20251021143122.268730-1-tanze@kylinos.cn/

tanze (3):
  media: dvb-core: Optimize the code using vmalloc_array
  media: vivid: Optimize the code using vmalloc_array
  media: pt1: Optimize the code using vmalloc_array

 drivers/media/dvb-core/dmxdev.c               | 4 ++--
 drivers/media/dvb-core/dvb_demux.c            | 9 +++++----
 drivers/media/pci/pt1/pt1.c                   | 2 +-
 drivers/media/test-drivers/vivid/vivid-core.c | 2 +-
 4 files changed, 9 insertions(+), 8 deletions(-)

-- 
2.25.1

Re: [PATCH v2 0/3] media: Optimize the code using vmalloc_array

Posted by Hans Verkuil 3 months, 1 week ago

On 22/10/2025 05:20, tanze wrote:
> Change array_size() to vmalloc_array(), Due to vmalloc_array() is optimized better,
> uses fewer instructions, and handles overflow more concisely
> 
> v1->v2: Update patch #02 #03 due to typos CI robot detected some issues
> 
> v1:https://lore.kernel.org/all/20251021143122.268730-1-tanze@kylinos.cn/
> 
> tanze (3):
>   media: dvb-core: Optimize the code using vmalloc_array
>   media: vivid: Optimize the code using vmalloc_array
>   media: pt1: Optimize the code using vmalloc_array

FYI: all three patches are duplicates of:

https://lore.kernel.org/linux-media/20250812035310.497233-1-rongqianfeng@vivo.com/

which has already been merged.

So I'm skipping these patches.

Regards,

	Hans

> 
>  drivers/media/dvb-core/dmxdev.c               | 4 ++--
>  drivers/media/dvb-core/dvb_demux.c            | 9 +++++----
>  drivers/media/pci/pt1/pt1.c                   | 2 +-
>  drivers/media/test-drivers/vivid/vivid-core.c | 2 +-
>  4 files changed, 9 insertions(+), 8 deletions(-)
>