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| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-01-04 07:46:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-29 02:00:36 +0300 |
| commit | 65f7651788e18fadb2fbb7276af935d7871e1803 (patch) | |
| tree | dcad32d4344d6d11d80061773d9d1dbc9ae92223 /include/net/sock.h | |
| parent | 571e7682026fd0e25833d103a3eeb74be29bf199 (diff) | |
| download | linux-65f7651788e18fadb2fbb7276af935d7871e1803.tar.xz | |
[NET]: prot_inuse cleanups and optimizations
1) Cleanups (all functions are prefixed by sock_prot_inuse)
sock_prot_inc_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_dec_use(prot) -> sock_prot_inuse_add(prot,-1)
sock_prot_inuse() -> sock_prot_inuse_get()
New functions :
sock_prot_inuse_init() and sock_prot_inuse_free() to abstract pcounter use.
2) if CONFIG_PROC_FS=n, we can zap 'inuse' member from "struct proto",
since nobody wants to read the inuse value.
This saves 1372 bytes on i386/SMP and some cpu cycles.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 3d938f6c6725..786fae858e77 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -548,7 +548,9 @@ struct proto { int (*get_port)(struct sock *sk, unsigned short snum); /* Keeping track of sockets in use */ +#ifdef CONFIG_PROC_FS struct pcounter inuse; +#endif /* Memory pressure */ void (*enter_memory_pressure)(void); @@ -584,9 +586,6 @@ struct proto { #endif }; -#define DEFINE_PROTO_INUSE(NAME) DEFINE_PCOUNTER(NAME) -#define REF_PROTO_INUSE(NAME) PCOUNTER_MEMBER_INITIALIZER(NAME, .inuse) - extern int proto_register(struct proto *prot, int alloc_slab); extern void proto_unregister(struct proto *prot); @@ -615,21 +614,42 @@ static inline void sk_refcnt_debug_release(const struct sock *sk) #define sk_refcnt_debug_release(sk) do { } while (0) #endif /* SOCK_REFCNT_DEBUG */ + +#ifdef CONFIG_PROC_FS +# define DEFINE_PROTO_INUSE(NAME) DEFINE_PCOUNTER(NAME) +# define REF_PROTO_INUSE(NAME) PCOUNTER_MEMBER_INITIALIZER(NAME, .inuse) /* Called with local bh disabled */ -static __inline__ void sock_prot_inc_use(struct proto *prot) +static inline void sock_prot_inuse_add(struct proto *prot, int inc) { - pcounter_add(&prot->inuse, 1); + pcounter_add(&prot->inuse, inc); } - -static __inline__ void sock_prot_dec_use(struct proto *prot) +static inline int sock_prot_inuse_init(struct proto *proto) { - pcounter_add(&prot->inuse, -1); + return pcounter_alloc(&proto->inuse); } - -static __inline__ int sock_prot_inuse(struct proto *proto) +static inline int sock_prot_inuse_get(struct proto *proto) { return pcounter_getval(&proto->inuse); } +static inline void sock_prot_inuse_free(struct proto *proto) +{ + pcounter_free(&proto->inuse); +} +#else +# define DEFINE_PROTO_INUSE(NAME) +# define REF_PROTO_INUSE(NAME) +static void inline sock_prot_inuse_add(struct proto *prot, int inc) +{ +} +static int inline sock_prot_inuse_init(struct proto *proto) +{ + return 0; +} +static void inline sock_prot_inuse_free(struct proto *proto) +{ +} +#endif + /* With per-bucket locks this operation is not-atomic, so that * this version is not worse. |