tipc: Reduce footprint by un-inlining buf_acquire routine (3032cca4) · Commits · 戴 / test

net/tipc/core.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -101,6 +101,30 @@ int tipc_get_mode(void)
		return tipc_mode;
		}

		/**
		* buf_acquire - creates a TIPC message buffer
		* @size: message size (including TIPC header)
		*
		* Returns a new buffer with data pointers set to the specified size.
		*
		* NOTE: Headroom is reserved to allow prepending of a data link header.
		* There may also be unrequested tailroom present at the buffer's end.
		*/

		struct sk_buff *buf_acquire(u32 size)
		{
		struct sk_buff *skb;
		unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;

		skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
		if (skb) {
		skb_reserve(skb, BUF_HEADROOM);
		skb_put(skb, size);
		skb->next = NULL;
		}
		return skb;
		}

		/**
		* tipc_core_stop_net - shut down TIPC networking sub-systems
		*/

+1 −23

Original line number	Diff line number	Diff line
		@@ -328,29 +328,7 @@ static inline struct tipc_msg buf_msg(struct sk_buff skb)
		return (struct tipc_msg *)skb->data;
		}

		/**
		* buf_acquire - creates a TIPC message buffer
		* @size: message size (including TIPC header)
		*
		* Returns a new buffer with data pointers set to the specified size.
		*
		* NOTE: Headroom is reserved to allow prepending of a data link header.
		* There may also be unrequested tailroom present at the buffer's end.
		*/

		static inline struct sk_buff *buf_acquire(u32 size)
		{
		struct sk_buff *skb;
		unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;

		skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
		if (skb) {
		skb_reserve(skb, BUF_HEADROOM);
		skb_put(skb, size);
		skb->next = NULL;
		}
		return skb;
		}
		extern struct sk_buff *buf_acquire(u32 size);

		/**
		* buf_discard - frees a TIPC message buffer