Eric Dumazet 87fb4b7b53 net: more accurate skb truesize ... skb truesize currently accounts for sk_buff struct and part of skb head. kmalloc() roundings are also ignored. Considering that skb_shared_info is larger than sk_buff, its time to take it into account for better memory accounting. This patch introduces SKB_TRUESIZE(X) macro to centralize various assumptions into a single place. At skb alloc phase, we put skb_shared_info struct at the exact end of skb head, to allow a better use of memory (lowering number of reallocations), since kmalloc() gives us power-of-two memory blocks. Unless SLUB/SLUB debug is active, both skb->head and skb_shared_info are aligned to cache lines, as before. Note: This patch might trigger performance regressions because of misconfigured protocol stacks, hitting per socket or global memory limits that were previously not reached. But its a necessary step for a more accurate memory accounting. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Andi Kleen <ak@linux.intel.com> CC: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-10-13 16:05:07 -04:00
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associola.c	sctp: Bundle HEAERTBEAT into ASCONF_ACK	2011-08-24 19:41:13 -07:00
auth.c
bind_addr.c
chunk.c
command.c
debug.c
endpointola.c
input.c
inqueue.c
ipv6.c
Kconfig
Makefile
objcnt.c
output.c
outqueue.c
primitive.c
probe.c
proc.c
protocol.c	net: more accurate skb truesize	2011-10-13 16:05:07 -04:00
sm_make_chunk.c	sctp: Bundle HEAERTBEAT into ASCONF_ACK	2011-08-24 19:41:13 -07:00
sm_sideeffect.c	sctp: deal with multiple COOKIE_ECHO chunks	2011-09-16 17:17:22 -04:00
sm_statefuns.c	Merge branch 'master' of github.com:davem330/net	2011-09-22 03:23:13 -04:00
sm_statetable.c
socket.c
ssnmap.c
sysctl.c
transport.c
tsnmap.c
ulpevent.c
ulpqueue.c