diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-02-08 15:00:39 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-02-23 07:37:55 -0800 |
| commit | b49b8e39e9c06a4d07c215de211279a91c42abc7 (patch) | |
| tree | 5f6a2ad93d1fb7d1162e25e9b8bff9b93d541b2c /net/core | |
| parent | 1393ad25685ec7f91137160dc482e7bb00cb27d2 (diff) | |
dst: call cond_resched() in dst_gc_task()
commit 2fc1b5dd99f66d93ffc23fd8df82d384c1a354c8 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/core')
| -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; |