Commit 81b01894 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Jakub Kicinski
Browse files

net: core: add devm_netdev_alloc_pcpu_stats 



We have netdev_alloc_pcpu_stats(), and we have devm_alloc_percpu().
Add a managed version of netdev_alloc_pcpu_stats, e.g. for allocating
the per-cpu stats in the probe() callback of a driver. It needs to be
a macro for dealing properly with the type argument.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent d3fd6548

include/linux/netdevice.h

+14 −0
Original line number Diff line number Diff line
@@ -2596,6 +2596,20 @@ static inline void dev_lstats_add(struct net_device *dev, unsigned int len) 
#define netdev_alloc_pcpu_stats(type)					\

	__netdev_alloc_pcpu_stats(type, GFP_KERNEL)



#define devm_netdev_alloc_pcpu_stats(dev, type)				\

({									\

	typeof(type) __percpu *pcpu_stats = devm_alloc_percpu(dev, type);\

	if (pcpu_stats) {						\

		int __cpu;						\

		for_each_possible_cpu(__cpu) {				\

			typeof(type) *stat;				\

			stat = per_cpu_ptr(pcpu_stats, __cpu);		\

			u64_stats_init(&stat->syncp);			\

		}							\

	}								\

	pcpu_stats;							\

})



enum netdev_lag_tx_type {

	NETDEV_LAG_TX_TYPE_UNKNOWN,

	NETDEV_LAG_TX_TYPE_RANDOM,