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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2020-10-29 18:31:21 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2020-10-31 10:22:49 -0700 |
| commit | 81b01894d792db8d4746c9c1b39c6e2a94fa0a04 (patch) | |
| tree | d2948c4a6e75ba853f699dcb98a64e51517fb1ae | |
| parent | net: core: add dev_sw_netstats_tx_add (diff) | |
| download | linux-dev-81b01894d792db8d4746c9c1b39c6e2a94fa0a04.tar.xz linux-dev-81b01894d792db8d4746c9c1b39c6e2a94fa0a04.zip | |
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: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/linux/netdevice.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 568fab708ac6..a53ed2d1ed1d 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -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, |