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| author | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
|---|---|---|
| committer | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
| commit | 3758b8bd81966b63dc93093a323e9bdd734545fd (patch) | |
| tree | 229bda2abe1a31d59da4b48e71aeefde934fe1d0 /kernel/bpf/devmap.c | |
| parent | d15d0b7a9f89cf5a905ad6802eb23100c8063939 (diff) | |
| parent | dd209b062b86dd951cf1da93f20aa497fe99d52d (diff) | |
Merge tag 'v4.19.59-rt24' into toradex_4.19.y-rttoradex_4.19.y-rt
Linux 4.19.59-rt24
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 2faad033715f..fc500ca464d0 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -186,6 +186,7 @@ static void dev_map_free(struct bpf_map *map) if (!dev) continue; + free_percpu(dev->bulkq); dev_put(dev->dev); kfree(dev); } @@ -281,6 +282,7 @@ 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; @@ -291,11 +293,12 @@ 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 @@ -388,6 +391,7 @@ 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); @@ -395,6 +399,7 @@ 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(); } } |