diff options
| author | Sridhar Samudrala <sridhar.samudrala@intel.com> | 2017-03-24 18:08:24 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-25 04:49:31 +0100 |
| commit | 7db6b048da3b9f84fe1d22fb29ff7e7c2ec6c0e5 (patch) | |
| tree | 4280f554866625190cd24db1768927764ba2bc77 /include/net/busy_poll.h | |
| parent | net: Track start of busy loop instead of when it should end (diff) | |
| download | linux-7db6b048da3b9f84fe1d22fb29ff7e7c2ec6c0e5.tar.xz linux-7db6b048da3b9f84fe1d22fb29ff7e7c2ec6c0e5.zip | |
net: Commonize busy polling code to focus on napi_id instead of socket
Move the core functionality in sk_busy_loop() to napi_busy_loop() and
make it independent of sk.
This enables re-using this function in epoll busy loop implementation.
Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/busy_poll.h')
| -rw-r--r-- | include/net/busy_poll.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h index 72c82f2ea536..8ffd434676b7 100644 --- a/include/net/busy_poll.h +++ b/include/net/busy_poll.h @@ -51,7 +51,11 @@ static inline bool sk_can_busy_loop(const struct sock *sk) return sk->sk_ll_usec && !signal_pending(current); } -void sk_busy_loop(struct sock *sk, int nonblock); +bool sk_busy_loop_end(void *p, unsigned long start_time); + +void napi_busy_loop(unsigned int napi_id, + bool (*loop_end)(void *, unsigned long), + void *loop_end_arg); #else /* CONFIG_NET_RX_BUSY_POLL */ static inline unsigned long net_busy_loop_on(void) @@ -64,10 +68,6 @@ static inline bool sk_can_busy_loop(struct sock *sk) return false; } -static inline void sk_busy_loop(struct sock *sk, int nonblock) -{ -} - #endif /* CONFIG_NET_RX_BUSY_POLL */ static inline unsigned long busy_loop_current_time(void) @@ -111,6 +111,16 @@ static inline bool sk_busy_loop_timeout(struct sock *sk, return true; } +static inline void sk_busy_loop(struct sock *sk, int nonblock) +{ +#ifdef CONFIG_NET_RX_BUSY_POLL + unsigned int napi_id = READ_ONCE(sk->sk_napi_id); + + if (napi_id >= MIN_NAPI_ID) + napi_busy_loop(napi_id, nonblock ? NULL : sk_busy_loop_end, sk); +#endif +} + /* used in the NIC receive handler to mark the skb */ static inline void skb_mark_napi_id(struct sk_buff *skb, struct napi_struct *napi) |