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| author | John Crispin <john@phrozen.org> | 2016-12-25 20:11:34 +0100 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-08-05 08:46:36 +0200 |
| commit | 74d00a8c3849c1340efd713eb94b786e304c201f (patch) | |
| tree | de481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch | |
| parent | de350550ef648d9728351b986b0516fa29465c45 (diff) | |
| download | mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.zip mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.tar.gz mtk-20170518-74d00a8c3849c1340efd713eb94b786e304c201f.tar.bz2 | |
kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches
* merge debloat patches
* merge Kconfig patches
* merge swconfig patches
* merge hotplug patches
* drop 200-fix_localversion.patch - upstream
* drop 222-arm_zimage_none.patch - unused
* drop 252-mv_cesa_depends.patch - no longer required
* drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused
* drop 661-fq_codel_keep_dropped_stats.patch - outdated
* drop 702-phy_add_aneg_done_function.patch - upstream
* drop 840-rtc7301.patch - unused
* drop 841-rtc_pt7c4338.patch - upstream
* drop 921-use_preinit_as_init.patch - unused
* drop spio-gpio-old and gpio-mmc - unused
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch')
| -rw-r--r-- | target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch b/target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch new file mode 100644 index 0000000..160fbe1 --- /dev/null +++ b/target/linux/generic/pending-3.18/080-23-fib_trie-Use-empty_children-instead-of-counting-empt.patch @@ -0,0 +1,34 @@ +From: Alexander Duyck <alexander.h.duyck@redhat.com> +Date: Thu, 22 Jan 2015 15:51:33 -0800 +Subject: [PATCH] fib_trie: Use empty_children instead of counting empty nodes + in stats collection + +It doesn't make much sense to count the pointers ourselves when +empty_children already has a count for the number of NULL pointers stored +in the tnode. As such save ourselves the cycles and just use +empty_children. + +Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/net/ipv4/fib_trie.c ++++ b/net/ipv4/fib_trie.c +@@ -1954,16 +1954,10 @@ static void trie_collect_stats(struct tr + hlist_for_each_entry_rcu(li, &n->list, hlist) + ++s->prefixes; + } else { +- unsigned long i; +- + s->tnodes++; + if (n->bits < MAX_STAT_DEPTH) + s->nodesizes[n->bits]++; +- +- for (i = tnode_child_length(n); i--;) { +- if (!rcu_access_pointer(n->child[i])) +- s->nullpointers++; +- } ++ s->nullpointers += n->empty_children; + } + } + rcu_read_unlock(); |