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>
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@ -159,7 +159,7 @@ static void dev_map_free(struct bpf_map *map)
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unsigned long *bitmap = per_cpu_ptr(dtab->flush_needed, cpu);
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while (!bitmap_empty(bitmap, dtab->map.max_entries))
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cpu_relax();
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cond_resched();
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}
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for (i = 0; i < dtab->map.max_entries; i++) {
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