lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[NET]: use __read_mostly on kmem_cache_t , DEFINE_SNMP_STAT pointers

Browse Source 
This patch puts mostly read only data in the right section
(read_mostly), to help sharing of these data between CPUS without
memory ping pongs.

On one of my production machine, tcp_statistics was sitting in a
heavily modified cache line, so *every* SNMP update had to force a
reload.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2005-08-26 12:05:31 -07:00
committed by David S. Miller
parent 29cb9f9c55
commit ba89966c19
29 changed files with 39 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/ipv4/ipmr.c
View File

@ -103,7 +103,7 @@ static DEFINE_SPINLOCK(mfc_unres_lock);
In this case data path is free of exclusive locks at all.
*/
static kmem_cache_t *mrt_cachep;
static kmem_cache_t *mrt_cachep __read_mostly;
static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local);
static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert);