diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 10:50:21 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 10:50:21 +0200 |
| commit | 341924049558e5f7c1a148a2c461a417933d35d9 (patch) | |
| tree | 1340b4f2131737ef4be63f18ee74cd73ad12cd3e /kernel/bpf/devmap.c | |
| parent | 516337048fa40496ae5ca9863c367ec991a44d9a (diff) | |
| parent | 4a8f81b8c053aad250ee247b219904ada72df9a4 (diff) | |
Merge branch 'timers/vdso' into timers/core
so the hyper-v clocksource update can be applied.
Diffstat (limited to 'kernel/bpf/devmap.c')
| -rw-r--r-- | kernel/bpf/devmap.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index 15dbc15c5b0c..cd8297b3bdb9 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -178,6 +178,7 @@ static void dev_map_free(struct bpf_map *map) if (!dev) continue; + free_percpu(dev->bulkq); dev_put(dev->dev); kfree(dev); } @@ -273,6 +274,7 @@ void __dev_map_flush(struct bpf_map *map) unsigned long *bitmap = this_cpu_ptr(dtab->flush_needed); u32 bit; + rcu_read_lock(); for_each_set_bit(bit, bitmap, map->max_entries) { struct bpf_dtab_netdev *dev = READ_ONCE(dtab->netdev_map[bit]); struct xdp_bulk_queue *bq; @@ -283,11 +285,12 @@ void __dev_map_flush(struct bpf_map *map) if (unlikely(!dev)) continue; - __clear_bit(bit, bitmap); - bq = this_cpu_ptr(dev->bulkq); bq_xmit_all(dev, bq, XDP_XMIT_FLUSH, true); + + __clear_bit(bit, bitmap); } + rcu_read_unlock(); } /* rcu_read_lock (from syscall and BPF contexts) ensures that if a delete and/or @@ -380,6 +383,7 @@ static void dev_map_flush_old(struct bpf_dtab_netdev *dev) int cpu; + rcu_read_lock(); for_each_online_cpu(cpu) { bitmap = per_cpu_ptr(dev->dtab->flush_needed, cpu); __clear_bit(dev->bit, bitmap); @@ -387,6 +391,7 @@ static void dev_map_flush_old(struct bpf_dtab_netdev *dev) bq = per_cpu_ptr(dev->bulkq, cpu); bq_xmit_all(dev, bq, XDP_XMIT_FLUSH, false); } + rcu_read_unlock(); } } |