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| author | andre <andre@FreeBSD.org> | 2013-04-09 21:02:20 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2013-04-09 21:02:20 +0000 |
| commit | 306fddaf7801d7fae1206025486e9d9a97f52ad4 (patch) | |
| tree | e754fcc273d884acf419c8faf5d21332f374104e /sys/net/if_llatbl.c | |
| parent | f70f4c314a94a4324c5dc34b2660fd66a18f35b4 (diff) | |
| download | FreeBSD-src-306fddaf7801d7fae1206025486e9d9a97f52ad4.zip FreeBSD-src-306fddaf7801d7fae1206025486e9d9a97f52ad4.tar.gz | |
Change certain heavily used network related mutexes and rwlocks to
reside on their own cache line to prevent false sharing with other
nearby structures, especially for those in the .bss segment.
NB: Those mutexes and rwlocks with variables next to them that get
changed on every invocation do not benefit from their own cache line.
Actually it may be net negative because two cache misses would be
incurred in those cases.
Diffstat (limited to 'sys/net/if_llatbl.c')
| -rw-r--r-- | sys/net/if_llatbl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/net/if_llatbl.c b/sys/net/if_llatbl.c index 84ea6c6..f19f6cf 100644 --- a/sys/net/if_llatbl.c +++ b/sys/net/if_llatbl.c @@ -67,7 +67,7 @@ static VNET_DEFINE(SLIST_HEAD(, lltable), lltables); static void vnet_lltable_init(void); -struct rwlock lltable_rwlock; +struct rwlock_padalign lltable_rwlock; RW_SYSINIT(lltable_rwlock, &lltable_rwlock, "lltable_rwlock"); /* |
