- 01 1月, 2015 1 次提交
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由 Alexander Duyck 提交于
The trie usage stats were currently being shared by all threads that were calling fib_table_lookup. As a result when multiple threads were performing lookups simultaneously the trie would begin to cache bounce between those threads. In order to prevent this I have updated the usage stats to use a set of percpu variables. By doing this we should be able to avoid the cache bouncing and still make use of these stats. Signed-off-by: NAlexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 12 12月, 2014 1 次提交
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由 Alexander Duyck 提交于
This patch addresses an issue with the level compression of the fib_trie. Specifically in the case of adding a new leaf that triggers a new node to be added that takes the place of the old node. The result is a trie where the 1 child tnode is on one side and one leaf is on the other which gives you a very deep trie. Below is the script I used to generate a trie on dummy0 with a 10.X.X.X family of addresses. ip link add type dummy ipval=184549374 bit=2 for i in `seq 1 23` do ifconfig dummy0:$bit $ipval/8 ipval=`expr $ipval - $bit` bit=`expr $bit \* 2` done cat /proc/net/fib_triestat Running the script before the patch: Local: Aver depth: 10.82 Max depth: 23 Leaves: 29 Prefixes: 30 Internal nodes: 27 1: 26 2: 1 Pointers: 56 Null ptrs: 1 Total size: 5 kB After applying the patch and repeating: Local: Aver depth: 4.72 Max depth: 9 Leaves: 29 Prefixes: 30 Internal nodes: 12 1: 3 2: 2 3: 7 Pointers: 70 Null ptrs: 30 Total size: 4 kB What this fix does is start the rebalance at the newly created tnode instead of at the parent tnode. This way if there is a gap between the parent and the new node it doesn't prevent the new tnode from being coalesced with any pre-existing nodes that may have been pushed into one of the new nodes child branches. Signed-off-by: NAlexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 07 8月, 2014 1 次提交
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由 Ken Helias 提交于
All other add functions for lists have the new item as first argument and the position where it is added as second argument. This was changed for no good reason in this function and makes using it unnecessary confusing. The name was changed to hlist_add_behind() to cause unconverted code to generate a compile error instead of using the wrong parameter order. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NKen Helias <kenhelias@firemail.de> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> [intel driver bits] Cc: Hugh Dickins <hughd@google.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 05 6月, 2014 1 次提交
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由 Sasha Levin 提交于
This reverts commit 30f38d2f. fib_triestat is surrounded by a big lie: while it claims that it's a seq_file (fib_triestat_seq_open, fib_triestat_seq_show), it isn't: static const struct file_operations fib_triestat_fops = { .owner = THIS_MODULE, .open = fib_triestat_seq_open, .read = seq_read, .llseek = seq_lseek, .release = single_release_net, }; Yes, fib_triestat is just a regular file. A small detail (assuming CONFIG_NET_NS=y) is that while for seq_files you could do seq_file_net() to get the net ptr, doing so for a regular file would be wrong and would dereference an invalid pointer. The fib_triestat lie claimed a victim, and trying to show the file would be bad for the kernel. This patch just reverts the issue and fixes fib_triestat, which still needs a rewrite to either be a seq_file or stop claiming it is. Signed-off-by: NSasha Levin <sasha.levin@oracle.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 6月, 2014 1 次提交
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由 David Ahern 提交于
Make fib_triestat_seq_show consistent with other /proc/net files and use seq_file_net. Signed-off-by: NDavid Ahern <dsahern@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 11月, 2013 1 次提交
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由 Tetsuo Handa 提交于
All seq_printf() users are using "%n" for calculating padding size, convert them to use seq_setwidth() / seq_pad() pair. Signed-off-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: NKees Cook <keescook@chromium.org> Cc: Joe Perches <joe@perches.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 10月, 2013 1 次提交
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由 baker.zhang 提交于
This is a enhancement. for the first node in fib_trie, newpos is 0, bit is 1. Only for the leaf or node with unmatched key need calc pos. Signed-off-by: Nbaker.zhang <baker.kernel@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 03 10月, 2013 1 次提交
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由 baker.zhang 提交于
Because 'node' is the i'st child of 'oldnode', thus, here 'i' equals tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits) we just get 1 more bit, and need not care the detail value of this bits. I apologize for the mistake. I generated the patch on a branch version, and did not notice the put_child has been changed. I have redone the test on HEAD version with my patch. two cases are used. case 1. inflate a node which has a leaf child node. case 2: inflate a node which has a an child node with skipped bits test env: ip link set eth0 up ip a add dev eth0 192.168.11.1/32 here, we just focus on route table(MAIN), so I use a "192.168.11.1/32" address to simplify the test case. call trace: + fib_insert_node + + trie_rebalance + + + resize + + + + inflate Test case 1: inflate a node which has a leaf child node. =========================================================== step 1. prepare a fib trie ------------------------------------------ ip r a 192.168.0.0/24 via 192.168.11.1 ip r a 192.168.1.0/24 via 192.168.11.1 we get a fib trie. root@baker:~# cat /proc/net/fib_trie Main: +-- 192.168.0.0/23 1 0 0 |-- 192.168.0.0 /24 universe UNICAST |-- 192.168.1.0 /24 universe UNICAST Local: ..... step 2. Add the third route ------------------------------------------ root@baker:~# ip r a 192.168.2.0/24 via 192.168.11.1 A fib_trie leaf will be inserted in fib_insert_node before trie_rebalance. For function 'inflate': 'inflate' is called with following trie. +-- 192.168.0.0/22 1 1 0 <=== tn node +-- 192.168.0.0/23 1 0 0 <== node a |-- 192.168.0.0 /24 universe UNICAST |-- 192.168.1.0 /24 universe UNICAST |-- 192.168.2.0 <== leaf(node b) When process node b, which is a leaf. here: i is 1, node key "192.168.2.0" oldnode is (pos:22, bits:1) unpatch source: tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits, 1) it equals: tkey_extract_bits("192.168,2,0", 22 + 1, 1) thus got 0, and call put_child(tn, 2*i, node); <== 2*i=2. patched source: tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits + 1), tkey_extract_bits("192.168,2,0", 22, 1 + 1) <== get 2. Test case 2: inflate a node which has a an child node with skipped bits ========================================================================== step 1. prepare a fib trie. ip link set eth0 up ip a add dev eth0 192.168.11.1/32 ip r a 192.168.128.0/24 via 192.168.11.1 ip r a 192.168.0.0/24 via 192.168.11.1 ip r a 192.168.16.0/24 via 192.168.11.1 ip r a 192.168.32.0/24 via 192.168.11.1 ip r a 192.168.48.0/24 via 192.168.11.1 ip r a 192.168.144.0/24 via 192.168.11.1 ip r a 192.168.160.0/24 via 192.168.11.1 ip r a 192.168.176.0/24 via 192.168.11.1 check: root@baker:~# cat /proc/net/fib_trie Main: +-- 192.168.0.0/16 1 0 0 +-- 192.168.0.0/18 2 0 0 |-- 192.168.0.0 /24 universe UNICAST |-- 192.168.16.0 /24 universe UNICAST |-- 192.168.32.0 /24 universe UNICAST |-- 192.168.48.0 /24 universe UNICAST +-- 192.168.128.0/18 2 0 0 |-- 192.168.128.0 /24 universe UNICAST |-- 192.168.144.0 /24 universe UNICAST |-- 192.168.160.0 /24 universe UNICAST |-- 192.168.176.0 /24 universe UNICAST Local: ... step 2. add a route to trigger inflate. ip r a 192.168.96.0/24 via 192.168.11.1 This command will call serveral times inflate. In the first time, the fib_trie is: ________________________ +-- 192.168.128.0/(16, 1) <== tn node +-- 192.168.0.0/(17, 1) <== node a +-- 192.168.0.0/(18, 2) |-- 192.168.0.0 |-- 192.168.16.0 |-- 192.168.32.0 |-- 192.168.48.0 |-- 192.168.96.0 +-- 192.168.128.0/(18, 2) <== node b. |-- 192.168.128.0 |-- 192.168.144.0 |-- 192.168.160.0 |-- 192.168.176.0 NOTE: node b is a interal node with skipped bits. here, i:1, node->key "192.168.128.0", oldnode:(pos:16, bits:1) so tkey_extract_bits(node->key, oldtnode->pos + oldtnode->bits, 1) it equals: tkey_extract_bits("192.168,128,0", 16 + 1, 1) <=== 0 tkey_extract_bits(node->key, oldtnode->pos, oldtnode->bits, 1) it equals: tkey_extract_bits("192.168,128,0", 16, 1+1) <=== 2 2*i + 0 == 2, so the result is same. Signed-off-by: Nbaker.zhang <baker.kernel@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 06 8月, 2013 1 次提交
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由 Eric Dumazet 提交于
AddressSanitizer [1] dynamic checker pointed a potential out of bound access in leaf_walk_rcu() We could allocate one more slot in tnode_new() to leave the prefetch() in-place but it looks not worth the pain. Bug added in commit 82cfbb00 ("[IPV4] fib_trie: iterator recode") [1] : https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernelReported-by: NAndrey Konovalov <andreyknvl@google.com> Signed-off-by: NEric Dumazet <edumazet@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 25 7月, 2013 1 次提交
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由 Jerry Snitselaar 提交于
With the <= max condition in the for loop, it will be always go 1 element further than needed. If the condition for the while loop is never met, then max is MAX_STAT_DEPTH, and for loop will walk off the end of nodesizes[]. Signed-off-by: NJerry Snitselaar <jerry.snitselaar@oracle.com> Acked-by: NHannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 06 5月, 2013 1 次提交
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由 Al Viro 提交于
Now that vfree() can be called from interrupt contexts, there's no need to play games with schedule_work() to escape calling vfree() from RCU callbacks. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 28 2月, 2013 1 次提交
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由 Sasha Levin 提交于
I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: NPeter Senna Tschudin <peter.senna@gmail.com> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NSasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 19 2月, 2013 2 次提交
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由 Gao feng 提交于
proc_net_remove is only used to remove proc entries that under /proc/net,it's not a general function for removing proc entries of netns. if we want to remove some proc entries which under /proc/net/stat/, we still need to call remove_proc_entry. this patch use remove_proc_entry to replace proc_net_remove. we can remove proc_net_remove after this patch. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gao feng 提交于
Right now, some modules such as bonding use proc_create to create proc entries under /proc/net/, and other modules such as ipv4 use proc_net_fops_create. It looks a little chaos.this patch changes all of proc_net_fops_create to proc_create. we can remove proc_net_fops_create after this patch. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 9月, 2012 1 次提交
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由 Nicolas Dichtel 提交于
Since route cache deletion (89aef892), delay is no more used. Remove it. Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 9月, 2012 1 次提交
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由 Eric W. Biederman 提交于
It is a frequent mistake to confuse the netlink port identifier with a process identifier. Try to reduce this confusion by renaming fields that hold port identifiers portid instead of pid. I have carefully avoided changing the structures exported to userspace to avoid changing the userspace API. I have successfully built an allyesconfig kernel with this change. Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com> Acked-by: NStephen Hemminger <shemminger@vyatta.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 9月, 2012 1 次提交
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由 Nicolas Dichtel 提交于
Since route cache deletion (89aef892), delay is no more used. Remove it. Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: NEric Dumazet <edumazet@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 8月, 2012 1 次提交
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由 Igor Maravic 提交于
We've already found leaf, don't search for it again. Same is for fib leaf info. Signed-off-by: NIgor Maravic <igorm@etf.rs> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 09 8月, 2012 1 次提交
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由 Eric Dumazet 提交于
After IP route cache removal, I believe rcu_bh() has very little use and we should remove this RCU variant, since it adds some cycles in fast path. Anyway, the call_rcu_bh() use in fib_true is obviously wrong, since some users only assert rcu_read_lock(). Signed-off-by: NEric Dumazet <edumazet@google.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 8月, 2012 1 次提交
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由 Eric Dumazet 提交于
__fls(x) is a bit faster than fls(x), granted we know x is non null. As Ben Hutchings pointed out, fls(x) = __fls(x) + 1 Signed-off-by: NEric Dumazet <edumazet@google.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 7月, 2012 2 次提交
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由 Lin Ming 提交于
The first parameter struct trie *t is not used anymore. Remove it. Signed-off-by: NLin Ming <mlin@ss.pku.edu.cn> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Lin Ming 提交于
It should print size of struct rt_trie_node * allocated instead of size of struct rt_trie_node. Signed-off-by: NLin Ming <mlin@ss.pku.edu.cn> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 13 7月, 2012 1 次提交
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由 David S. Miller 提交于
No longer used. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 6月, 2012 1 次提交
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 04 6月, 2012 1 次提交
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由 Joe Perches 提交于
Adding casts of objects to the same type is unnecessary and confusing for a human reader. For example, this cast: int y; int *p = (int *)&y; I used the coccinelle script below to find and remove these unnecessary casts. I manually removed the conversions this script produces of casts with __force and __user. @@ type T; T *p; @@ - (T *)p + p Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 5月, 2012 1 次提交
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由 David S. Miller 提交于
Due to RCU lookups and RCU based release, fib_info objects can be found during lookup which have fi->fib_dead set. We must ignore these entries, otherwise we risk dereferencing the parts of the entry which are being torn down. Reported-by: NYevgen Pronenko <yevgen.pronenko@sonymobile.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 29 3月, 2012 1 次提交
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由 David Howells 提交于
Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: NDavid Howells <dhowells@redhat.com>
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- 12 3月, 2012 1 次提交
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由 Joe Perches 提交于
Use a more current kernel messaging style. Convert a printk block to print_hex_dump. Coalesce formats, align arguments. Use %s, __func__ instead of embedding function names. Some messages that were prefixed with <foo>_close are now prefixed with <foo>_fini. Some ah4 and esp messages are now not prefixed with "ip ". The intent of this patch is to later add something like #define pr_fmt(fmt) "IPv4: " fmt. to standardize the output messages. Text size is trivially reduced. (x86-32 allyesconfig) $ size net/ipv4/built-in.o* text data bss dec hex filename 887888 31558 249696 1169142 11d6f6 net/ipv4/built-in.o.new 887934 31558 249800 1169292 11d78c net/ipv4/built-in.o.old Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 13 1月, 2012 1 次提交
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由 Eric Dumazet 提交于
commit a9b3cd7f (rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER) did a lot of incorrect changes, since it did a complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x, y). We miss needed barriers, even on x86, when y is not NULL. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 05 12月, 2011 1 次提交
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由 Florian Westphal 提交于
The reverse path filter module will use fib_lookup. If CONFIG_IP_MULTIPLE_TABLES is not set, fib_lookup is only a static inline helper that calls fib_table_lookup, so export that too. Signed-off-by: NFlorian Westphal <fw@strlen.de> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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- 01 11月, 2011 1 次提交
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由 Paul Gortmaker 提交于
These files are non modular, but need to export symbols using the macros now living in export.h -- call out the include so that things won't break when we remove the implicit presence of module.h from everywhere. Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 02 8月, 2011 1 次提交
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由 Stephen Hemminger 提交于
When assigning a NULL value to an RCU protected pointer, no barrier is needed. The rcu_assign_pointer, used to handle that but will soon change to not handle the special case. Convert all rcu_assign_pointer of NULL value. //smpl @@ expression P; @@ - rcu_assign_pointer(P, NULL) + RCU_INIT_POINTER(P, NULL) // </smpl> Signed-off-by: NStephen Hemminger <shemminger@vyatta.com> Acked-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 19 7月, 2011 1 次提交
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由 Eric Dumazet 提交于
Compiler is not smart enough to avoid double BSWAP instructions in ntohl(inet_make_mask(plen)). Lets cache this value in struct leaf_info, (fill a hole on 64bit arches) With route cache disabled, this saves ~2% of cpu in udpflood bench on x86_64 machine. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 23 5月, 2011 2 次提交
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由 Paul Gortmaker 提交于
After discovering that wide use of prefetch on modern CPUs could be a net loss instead of a win, net drivers which were relying on the implicit inclusion of prefetch.h via the list headers showed up in the resulting cleanup fallout. Give them an explicit include via the following $0.02 script. ========================================= #!/bin/bash MANUAL="" for i in `git grep -l 'prefetch(.*)' .` ; do grep -q '<linux/prefetch.h>' $i if [ $? = 0 ] ; then continue fi ( echo '?^#include <linux/?a' echo '#include <linux/prefetch.h>' echo . echo w echo q ) | ed -s $i > /dev/null 2>&1 if [ $? != 0 ]; then echo $i needs manual fixup MANUAL="$i $MANUAL" fi done echo ------------------- 8\<---------------------- echo vi $MANUAL ========================================= Signed-off-by: NPaul <paul.gortmaker@windriver.com> [ Fixed up some incorrect #include placements, and added some non-network drivers and the fib_trie.c case - Linus ] Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David S. Miller 提交于
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 5月, 2011 1 次提交
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由 Lai Jiangshan 提交于
The rcu callback __leaf_info_free_rcu() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(__leaf_info_free_rcu). Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
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- 02 5月, 2011 1 次提交
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由 Alexey Dobriyan 提交于
fib_trie_table() is called during netns creation and Chromium uses clone(CLONE_NEWNET) to sandbox renderer process. Don't print anything. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 15 4月, 2011 1 次提交
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由 David S. Miller 提交于
fib_select_default() is a complete NOP, and completely pointless to invoke, when we have no more than 1 default route installed. And this is far and away the common case. So remember how many prefixlen==0 routes we have in the routing table, and elide the call when we have no more than one of those. This cuts output route creation time by 157 cycles on Niagara2+. In order to add the new int to fib_table, we have to correct the type of ->tb_data[] to unsigned long, otherwise the private area will be unaligned on 64-bit systems. Signed-off-by: NDavid S. Miller <davem@davemloft.net> Reviewed-by: NEric Dumazet <eric.dumazet@gmail.com>
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- 31 3月, 2011 2 次提交
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由 Lucas De Marchi 提交于
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>
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由 Eric Dumazet 提交于
Add __rcu annotations and lockdep checks. Add const qualifiers node_parent() and node_parent_rcu() can use rcu_dereference_index_check() Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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