lkml.org 
[lkml]   [2015]   [Jul]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/2] net: Export __netdev_alloc_frag() to allow gfp_mask flags
From
Date
On Wed, 2015-07-29 at 11:10 -0400, WingMan Kwok wrote:
> This patch makes the function __netdev_alloc_frag() non-static and
> exports it so that drivers that need to specify additional flags,
> such as __GFP_DMA, can use it. The currently exported function,
> netdev_alloc_frag() doesn't allow passing in gfp_mask flags.
>
> Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
> Signed-off-by: Reece R. Pollack <x0183204@ti.com>
> ---
> include/linux/skbuff.h | 1 +
> net/core/skbuff.c | 3 ++-
> 2 files changed, 3 insertions(+), 1 deletion(-)

You can not do this.

__napi_alloc_frag() uses __alloc_page_frag() using a per cpu reserve.

This per cpu reserve would be shared by regular GFP_ATOMIC and your
__GFP_DMA allocations.





\
 
 \ /
  Last update: 2015-07-29 21:11    [W:0.065 / U:25.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site