- 09 2月, 2007 1 次提交
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由 Eric Dumazet 提交于
ehash table layout is currently this one : First half of this table is used by sockets not in TIME_WAIT state Second half of it is used by sockets in TIME_WAIT state. This is non optimal because of for a given hash or socket, the two chain heads are located in separate cache lines. Moreover the locks of the second half are never used. If instead of this halving, we use two list heads in inet_ehash_bucket instead of only one, we probably can avoid one cache miss, and reduce ram usage, particularly if sizeof(rwlock_t) is big (various CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_LOCK_ALLOC settings). So we still halves the table but we keep together related chains to speedup lookups and socket state change. In this patch I did not try to align struct inet_ehash_bucket, but a future patch could try to make this structure have a convenient size (a power of two or a multiple of L1_CACHE_SIZE). I guess rwlock will just vanish as soon as RCU is plugged into ehash :) , so maybe we dont need to scratch our heads to align the bucket... Note : In case struct inet_ehash_bucket is not a power of two, we could probably change alloc_large_system_hash() (in case it use __get_free_pages()) to free the unused space. It currently allocates a big zone, but the last quarter of it could be freed. Again, this should be a temporary 'problem'. Patch tested on ipv4 tcp only, but should be OK for IPV6 and DCCP. Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 12月, 2006 2 次提交
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由 Christoph Lameter 提交于
Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Christoph Lameter 提交于
SLAB_ATOMIC is an alias of GFP_ATOMIC Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 29 9月, 2006 2 次提交
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由 Al Viro 提交于
inet_lookup() annotated along with helper functions (__inet_lookup(), __inet_lookup_established(), inet_lookup_established(), inet_lookup_listener(), __inet_lookup_listener() and inet_ehashfn()) Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Al Viro 提交于
INET_MATCH() and friends depend on an interesting set of kludges: * there's a pair of adjacent fields in struct inet_sock - __be16 dport followed by __u16 num. We want to search by pair, so we combine the keys into a single 32bit value and compare with 32bit value read from &...->dport. * on 64bit targets we combine comparisons with pair of adjacent __be32 fields in the same way. Make sure that we don't mix those values with anything else and that pairs we form them from have correct types. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 9月, 2006 2 次提交
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由 Herbert Xu 提交于
Right now most inet_lookup_* functions take a host-order hnum instead of a network-order dport because that's how it is represented internally. This means that users of these functions have to be careful about using the right byte-order. To add more confusion, inet_lookup takes a network-order dport unlike all other functions. So this patch changes all visible inet_lookup functions to take a dport and move all dport->hnum conversion inside them. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Herbert Xu 提交于
By modern standards this function is way too big to be inlined. It's even bigger than __inet_lookup_listener :) Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 15 4月, 2006 1 次提交
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由 Adrian Bunk 提交于
This patch contains the following possible cleanups: - make the following needlessly global function static: - arp.c: arp_rcv() - remove the following unused EXPORT_SYMBOL's: - devinet.c: devinet_ioctl - fib_frontend.c: ip_rt_ioctl - inet_hashtables.c: inet_bind_bucket_create - inet_hashtables.c: inet_bind_hash - tcp_input.c: sysctl_tcp_abc - tcp_ipv4.c: sysctl_tcp_tw_reuse - tcp_output.c: sysctl_tcp_mtu_probing - tcp_output.c: sysctl_tcp_base_mss Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 24 3月, 2006 1 次提交
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 04 1月, 2006 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
Renaming it to inet_hash_connect, making it possible to ditch dccp_v4_hash_connect and share the same code with TCP instead. Signed-off-by: NArnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 8月, 2005 6 次提交
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由 Arnaldo Carvalho de Melo 提交于
This creates struct inet_connection_sock, moving members out of struct tcp_sock that are shareable with other INET connection oriented protocols, such as DCCP, that in my private tree already uses most of these members. The functions that operate on these members were renamed, using a inet_csk_ prefix while not being moved yet to a new file, so as to ease the review of these changes. Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
And also some TIME_WAIT functions. [acme@toy net-2.6.14]$ grep built-in /tmp/before.size /tmp/after.size /tmp/before.size: 282955 13122 9312 305389 4a8ed net/ipv4/built-in.o /tmp/after.size: 281566 13122 9312 304000 4a380 net/ipv4/built-in.o [acme@toy net-2.6.14]$ I kept them still inlined, will uninline at some point to see what would be the performance difference. Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
[acme@toy net-2.6.14]$ grep built-in /tmp/before /tmp/after /tmp/before: 282560 13122 9312 304994 4a762 net/ipv4/built-in.o /tmp/after: 282560 13122 9312 304994 4a762 net/ipv4/built-in.o Will be used in DCCP, not exporting it right now not to get in Adrian Bunk's exported-but-not-used-on-modules radar 8) Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
This required moving tcp_bucket_cachep to inet_hashinfo. Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Arnaldo Carvalho de Melo 提交于
Signed-off-by: NArnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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