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| author |   Eric Dumazet <edumazet@google.com> | 2015-11-18 06:31:01 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:42 -0500 |
| commit | 6180d9de61a5c461f9e3efef5417a844701dbbb2 (patch) | |
| tree | 721d4b7a92759fe2951844e6a6f8474cb5fccf97 /net/core | |
| parent | net: add netif_tx_napi_add() (diff) | |
| download | linux-dev-6180d9de61a5c461f9e3efef5417a844701dbbb2.tar.xz linux-dev-6180d9de61a5c461f9e3efef5417a844701dbbb2.zip | |
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: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index ff58a8bc5e3c..02dfbd91a8e4 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -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; |