On 13.03.2018 15:24, Oleg Babin wrote: > A network driver can allocate socket buffers in a softirq context but > if the allocation fails then a warning will be produced to the dmesg. > A lot of such warnings could slow down the whole system as a printing > to dmesg can be very time-consuming (especially in a situation of low > memory). Also network drivers usually have appropriate stats counter > (like 'alloc_rx_buff_failed') which can be obtained using ethtool. > > Suppress this warnings using __GFP_NOWARN flag. > > https://jira.sw.ru/browse/PSBM-82315 > Signed-off-by: Oleg Babin <oba...@virtuozzo.com>
Reviewed-by: Kirill Tkhai <ktk...@virtuozzo.com> > --- > include/linux/skbuff.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h > index fd8e26d..eef76c3 100644 > --- a/include/linux/skbuff.h > +++ b/include/linux/skbuff.h > @@ -2440,7 +2440,7 @@ struct sk_buff *__napi_alloc_skb(struct napi_struct > *napi, > static inline struct sk_buff *napi_alloc_skb(struct napi_struct *napi, > unsigned int length) > { > - return __napi_alloc_skb(napi, length, GFP_ATOMIC); > + return __napi_alloc_skb(napi, length, GFP_ATOMIC | __GFP_NOWARN); > } > void napi_consume_skb(struct sk_buff *skb, int budget); > > _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel