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authorEric Dumazet <dada1@cosmosbay.com>2007-12-21 06:07:41 -0500
committerDavid S. Miller <davem@davemloft.net>2008-01-28 17:59:59 -0500
commit8df09ea3b8ccfe0c94844102d33fa46f57c08d9e (patch)
treea7e91a1e2c9eea21b1e1a6a67bd855899627aafe /include
parentce55dd3610f7ac29bf8d159c2e2ace9aaf2c3038 (diff)
[SOCK] Avoid integer divides where not necessary in include/net/sock.h
Because sk_wmem_queued, sk_sndbuf are signed, a divide per two may force compiler to use an integer divide. We can instead use a right shift. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/sock.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 416bc994adad..e178b49eefbb 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -445,7 +445,7 @@ static inline int sk_acceptq_is_full(struct sock *sk)
445 */ 445 */
446static inline int sk_stream_min_wspace(struct sock *sk) 446static inline int sk_stream_min_wspace(struct sock *sk)
447{ 447{
448 return sk->sk_wmem_queued / 2; 448 return sk->sk_wmem_queued >> 1;
449} 449}
450 450
451static inline int sk_stream_wspace(struct sock *sk) 451static inline int sk_stream_wspace(struct sock *sk)
@@ -1187,7 +1187,7 @@ static inline void sk_wake_async(struct sock *sk, int how, int band)
1187static inline void sk_stream_moderate_sndbuf(struct sock *sk) 1187static inline void sk_stream_moderate_sndbuf(struct sock *sk)
1188{ 1188{
1189 if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) { 1189 if (!(sk->sk_userlocks & SOCK_SNDBUF_LOCK)) {
1190 sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued / 2); 1190 sk->sk_sndbuf = min(sk->sk_sndbuf, sk->sk_wmem_queued >> 1);
1191 sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF); 1191 sk->sk_sndbuf = max(sk->sk_sndbuf, SOCK_MIN_SNDBUF);
1192 } 1192 }
1193} 1193}
@@ -1211,7 +1211,7 @@ static inline struct page *sk_stream_alloc_page(struct sock *sk)
1211 */ 1211 */
1212static inline int sock_writeable(const struct sock *sk) 1212static inline int sock_writeable(const struct sock *sk)
1213{ 1213{
1214 return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2); 1214 return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf >> 1);
1215} 1215}
1216 1216
1217static inline gfp_t gfp_any(void) 1217static inline gfp_t gfp_any(void)