mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-14 06:35:12 +00:00
Code Issues Releases Wiki Activity

net: skbuff: move alloc_cpu into a potential hole

Browse source 
alloc_cpu is currently between 4 byte fields, so it's almost
guaranteed to create a 2B hole. It has a knock on effect of
creating a 4B hole after @end (and @end and @tail being in
different cachelines).

None of this matters hugely, but for kernel configs which
don't enable all the features there may well be a 2B hole
after the bitfield. Move alloc_cpu there.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2023-04-17 08:53:48 -07:00 committed by David S. Miller
parent c24831a13b
commit 4398f3f6d1
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
include/linux/skbuff.h
View file

@ -991,6 +991,8 @@ struct sk_buff {
__u16 tc_index; /* traffic control index */
#endif
u16 alloc_cpu;
union {
__wsum csum;
struct {
@ -1014,7 +1016,6 @@ struct sk_buff {
unsigned int sender_cpu;
};
#endif
u16 alloc_cpu;
#ifdef CONFIG_NETWORK_SECMARK
__u32 secmark;
#endif