On Mon, Apr 16, 2012 at 05:35:03PM +0200, Daniel Wagner wrote:
> From: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
>
> Do not make the cache line dirty when nothing has changed.
> sock_update_classid() does exactly the same thing.
>
> Signed-off-by: Daniel Wagner <daniel.wagner@xxxxxxxxxxxx>
> CC: Neil Horman <nhorman@xxxxxxxxxxxxx>
> CC: Tejun Heo <tj@xxxxxxxxxx>
> CC: Li Zefan <lizefan@xxxxxxxxxx>
> ---
> net/core/sock.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/net/core/sock.c b/net/core/sock.c
> index c7e60ea..75c4b72 100644
> --- a/net/core/sock.c
> +++ b/net/core/sock.c
> @@ -1190,10 +1190,14 @@ EXPORT_SYMBOL(sock_update_classid);
>
> void sock_update_netprioidx(struct sock *sk)
> {
> + u32 prioidx;
> +
> if (in_interrupt())
> return;
>
> - sk->sk_cgrp_prioidx = task_netprioidx(current);
> + prioidx = task_netprioidx(current);
> + if (prioidx != sk->sk_cgrp_prioidx)
> + sk->sk_cgrp_prioidx = prioidx;
> }
> EXPORT_SYMBOL_GPL(sock_update_netprioidx);
> #endif
> --
> 1.7.10.130.g36e6c
>
>
Acked-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe cgroups" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
