Merge "skbuff: support disabling of skb fragment cache" (ef1f048b) · Commits · e / devices / android_kernel_xiaomi_markw

net/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,16 @@ config COMPAT_NETLINK_MESSAGES
		Newly written code should NEVER need this option but do
		compat-independent messages instead!

		config DISABLE_NET_SKB_FRAG_CACHE
		bool "Disable skb fragment cache"
		help
		Enabling this option ensures that when allocating skbs the network
		skb fragment cache is not used.
		Disabling use of the fragment cache can be useful on some low end
		targets because it reduces memory pressure.

		If you are unsure how to answer this question, answer N.

		menu "Networking options"

		source "net/packet/Kconfig"

+17 −0

Original line number	Diff line number	Diff line
		@@ -443,6 +443,7 @@ EXPORT_SYMBOL(netdev_alloc_frag);
		*
		* %NULL is returned if there is no free memory.
		*/
		#ifndef CONFIG_DISABLE_NET_SKB_FRAG_CACHE
		struct sk_buff __netdev_alloc_skb(struct net_device dev,
		unsigned int length, gfp_t gfp_mask)
		{
		@@ -473,6 +474,22 @@ struct sk_buff __netdev_alloc_skb(struct net_device dev,
		}
		return skb;
		}
		#else
		struct sk_buff __netdev_alloc_skb(struct net_device dev,
		unsigned int length, gfp_t gfp_mask)
		{
		struct sk_buff *skb = NULL;

		skb = __alloc_skb(length + NET_SKB_PAD, gfp_mask,
		SKB_ALLOC_RX, NUMA_NO_NODE);
		if (likely(skb)) {
		skb_reserve(skb, NET_SKB_PAD);
		skb->dev = dev;
		}
		return skb;
		}
		#endif

		EXPORT_SYMBOL(__netdev_alloc_skb);

		void skb_add_rx_frag(struct sk_buff skb, int i, struct page page, int off,