Commit 6180d9de authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

net: move napi_hash[] into read mostly section

We do not often add/delete a napi context.
Moving napi_hash[] into read mostly section avoids potential false sharing.
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d64b5e85
......@@ -16,6 +16,10 @@
struct hlist_head name[1 << (bits)] = \
{ [0 ... ((1 << (bits)) - 1)] = HLIST_HEAD_INIT }
#define DEFINE_READ_MOSTLY_HASHTABLE(name, bits) \
struct hlist_head name[1 << (bits)] __read_mostly = \
{ [0 ... ((1 << (bits)) - 1)] = HLIST_HEAD_INIT }
#define DECLARE_HASHTABLE(name, bits) \
struct hlist_head name[1 << (bits)]
......
......@@ -184,7 +184,7 @@ EXPORT_SYMBOL(dev_base_lock);
static DEFINE_SPINLOCK(napi_hash_lock);
static unsigned int napi_gen_id = NR_CPUS;
static DEFINE_HASHTABLE(napi_hash, 8);
static DEFINE_READ_MOSTLY_HASHTABLE(napi_hash, 8);
static seqcount_t devnet_rename_seq;
......
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