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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2011-04-11 22:39:40 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-04-12 13:58:33 -0700 |
| commit | 66944e1c5797562cebe2d1857d46dff60bf9a69e (patch) | |
| tree | 8e7ff0099a1298daa15286788c2bfc7f395e3d74 /net/ipv4/udp_impl.h | |
| parent | bridge: reset IPCB in br_parse_ip_options (diff) | |
| download | linux-dev-66944e1c5797562cebe2d1857d46dff60bf9a69e.tar.xz linux-dev-66944e1c5797562cebe2d1857d46dff60bf9a69e.zip | |
inetpeer: reduce stack usage
On 64bit arches, we use 752 bytes of stack when cleanup_once() is called
from inet_getpeer().
Lets share the avl stack to save ~376 bytes.
Before patch :
# objdump -d net/ipv4/inetpeer.o | scripts/checkstack.pl
0x000006c3 unlink_from_pool [inetpeer.o]: 376
0x00000721 unlink_from_pool [inetpeer.o]: 376
0x00000cb1 inet_getpeer [inetpeer.o]: 376
0x00000e6d inet_getpeer [inetpeer.o]: 376
0x0004 inet_initpeers [inetpeer.o]: 112
# size net/ipv4/inetpeer.o
text data bss dec hex filename
5320 432 21 5773 168d net/ipv4/inetpeer.o
After patch :
objdump -d net/ipv4/inetpeer.o | scripts/checkstack.pl
0x00000c11 inet_getpeer [inetpeer.o]: 376
0x00000dcd inet_getpeer [inetpeer.o]: 376
0x00000ab9 peer_check_expire [inetpeer.o]: 328
0x00000b7f peer_check_expire [inetpeer.o]: 328
0x0004 inet_initpeers [inetpeer.o]: 112
# size net/ipv4/inetpeer.o
text data bss dec hex filename
5163 432 21 5616 15f0 net/ipv4/inetpeer.o
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Scot Doyle <lkml@scotdoyle.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Reviewed-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp_impl.h')
0 files changed, 0 insertions, 0 deletions