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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-02-09 02:00:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-09 02:00:39 +0300 |
| commit | 2fc1b5dd99f66d93ffc23fd8df82d384c1a354c8 (patch) | |
| tree | 7a0cdb9d0c683a7f7883f96a903eda997c90e2df /net/core/dst.c | |
| parent | d696c7bdaa55e2208e56c6f98e6bc1599f34286d (diff) | |
| download | linux-2fc1b5dd99f66d93ffc23fd8df82d384c1a354c8.tar.xz | |
dst: call cond_resched() in dst_gc_task()
Kernel bugzilla #15239
On some workloads, it is quite possible to get a huge dst list to
process in dst_gc_task(), and trigger soft lockup detection.
Fix is to call cond_resched(), as we run in process context.
Reported-by: Pawel Staszewski <pstaszewski@itcare.pl>
Tested-by: Pawel Staszewski <pstaszewski@itcare.pl>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dst.c')
| -rw-r--r-- | net/core/dst.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/dst.c b/net/core/dst.c index 57bc4d5b8d08..cb1b3488b739 100644 --- a/net/core/dst.c +++ b/net/core/dst.c @@ -17,6 +17,7 @@ #include <linux/string.h> #include <linux/types.h> #include <net/net_namespace.h> +#include <linux/sched.h> #include <net/dst.h> @@ -79,6 +80,7 @@ loop: while ((dst = next) != NULL) { next = dst->next; prefetch(&next->next); + cond_resched(); if (likely(atomic_read(&dst->__refcnt))) { last->next = dst; last = dst; |