tom.leiming@gmail.com 688ecfe602 bpf: hash: use per-bucket spinlock ... Both htab_map_update_elem() and htab_map_delete_elem() can be called from eBPF program, and they may be in kernel hot path, so it isn't efficient to use a per-hashtable lock in this two helpers. The per-hashtable spinlock is used for protecting bucket's hlist, and per-bucket lock is just enough. This patch converts the per-hashtable lock into per-bucket spinlock, so that contention can be decreased a lot. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-12-29 15:13:44 -05:00
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bpf	bpf: hash: use per-bucket spinlock	2015-12-29 15:13:44 -05:00
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