lkml.org 
[lkml]   [2020]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 14/14] PCI/P2PDMA: drop double zeroing
On Sun, Sep 20, 2020 at 01:26:26PM +0200, Julia Lawall wrote:
> sg_init_table zeroes its first argument, so the allocation of that argument
> doesn't have to.
>
> the semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@
> expression x;
> @@
>
> x =
> - kzalloc
> + kmalloc
> (...)
> ...
> sg_init_table(x,...)
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

Applied to pci/misc for v5.10, thanks!

> ---
> drivers/pci/p2pdma.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff -u -p a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
> --- a/drivers/pci/p2pdma.c
> +++ b/drivers/pci/p2pdma.c
> @@ -762,7 +762,7 @@ struct scatterlist *pci_p2pmem_alloc_sgl
> struct scatterlist *sg;
> void *addr;
>
> - sg = kzalloc(sizeof(*sg), GFP_KERNEL);
> + sg = kmalloc(sizeof(*sg), GFP_KERNEL);
> if (!sg)
> return NULL;
>
>

\
 
 \ /
  Last update: 2020-09-29 01:41    [W:0.155 / U:8.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site