diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2018-08-22 07:58:19 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-22 20:52:49 +0300 |
| commit | 514056d506e44084369f5ce1c8186e4253901a05 (patch) | |
| tree | 2f134dca04c9518000c4494acb1e08c8a6fd836c /fs/eventpoll.c | |
| parent | 133712a2ec8493596565e9de3d25659d6e66a47e (diff) | |
| download | linux-514056d506e44084369f5ce1c8186e4253901a05.tar.xz | |
fs/eventpoll.c: simply CONFIG_NET_RX_BUSY_POLL ifdefery
... 'tis easier on the eye.
[akpm@linux-foundation.org: use inlines rather than macros]
Link: http://lkml.kernel.org/r/20180725185620.11020-1-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/eventpoll.c')
| -rw-r--r-- | fs/eventpoll.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 58b96d8a898a..b5e43e11f1e3 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -391,7 +391,6 @@ static bool ep_busy_loop_end(void *p, unsigned long start_time) return ep_events_available(ep) || busy_loop_timeout(start_time); } -#endif /* CONFIG_NET_RX_BUSY_POLL */ /* * Busy poll if globally on and supporting sockets found && no events, @@ -401,20 +400,16 @@ static bool ep_busy_loop_end(void *p, unsigned long start_time) */ static void ep_busy_loop(struct eventpoll *ep, int nonblock) { -#ifdef CONFIG_NET_RX_BUSY_POLL unsigned int napi_id = READ_ONCE(ep->napi_id); if ((napi_id >= MIN_NAPI_ID) && net_busy_loop_on()) napi_busy_loop(napi_id, nonblock ? NULL : ep_busy_loop_end, ep); -#endif } static inline void ep_reset_busy_poll_napi_id(struct eventpoll *ep) { -#ifdef CONFIG_NET_RX_BUSY_POLL if (ep->napi_id) ep->napi_id = 0; -#endif } /* @@ -422,7 +417,6 @@ static inline void ep_reset_busy_poll_napi_id(struct eventpoll *ep) */ static inline void ep_set_busy_poll_napi_id(struct epitem *epi) { -#ifdef CONFIG_NET_RX_BUSY_POLL struct eventpoll *ep; unsigned int napi_id; struct socket *sock; @@ -452,9 +446,24 @@ static inline void ep_set_busy_poll_napi_id(struct epitem *epi) /* record NAPI ID for use in next busy poll */ ep->napi_id = napi_id; -#endif } +#else + +static inline void ep_busy_loop(struct eventpoll *ep, int nonblock) +{ +} + +static inline void ep_reset_busy_poll_napi_id(struct eventpoll *ep) +{ +} + +static inline void ep_set_busy_poll_napi_id(struct epitem *epi) +{ +} + +#endif /* CONFIG_NET_RX_BUSY_POLL */ + /** * ep_call_nested - Perform a bound (possibly) nested call, by checking * that the recursion limit is not exceeded, and that |