diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-23 09:21:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-23 09:21:15 +0200 |
| commit | 58ee01007c9e00531c1280b2d99b49d29a5e9844 (patch) | |
| tree | d1feb7102591a811b4458e2e209d476580ae3687 /kernel/bpf/devmap.c | |
| parent | 4850f26abfcac9ed28a4db5817b46dc0bfbbbae0 (diff) | |
| parent | 4b972a01a7da614b4796475f933094751a295a2f (diff) | |
Merge 5.2-rc6 into usb-next
We need the USB fixes in here too.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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(); } } |