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| author | John Fastabend <john.fastabend@gmail.com> | 2017-09-08 14:01:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-08 21:11:00 -0700 |
| commit | 374fb014fc5b15e420faa00af036868a635eadd3 (patch) | |
| tree | 0925d65fb3e7e0eec9f6d08f22086a861d294dac /kernel | |
| parent | 5a67da2a71c64daeb456f6f3e87b5c7cecdc5ffa (diff) | |
| download | lwn-374fb014fc5b15e420faa00af036868a635eadd3.tar.gz lwn-374fb014fc5b15e420faa00af036868a635eadd3.zip | |
bpf: devmap, use cond_resched instead of cpu_relax
Be a bit more friendly about waiting for flush bits to complete.
Replace the cpu_relax() with a cond_resched().
Suggested-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/devmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c index ecf9f99ecc57..959c9a07f318 100644 --- a/kernel/bpf/devmap.c +++ b/kernel/bpf/devmap.c @@ -159,7 +159,7 @@ static void dev_map_free(struct bpf_map *map) unsigned long *bitmap = per_cpu_ptr(dtab->flush_needed, cpu); while (!bitmap_empty(bitmap, dtab->map.max_entries)) - cpu_relax(); + cond_resched(); } for (i = 0; i < dtab->map.max_entries; i++) { |