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author | Pavel Emelyanov <xemul@openvz.org> | 2008-02-08 04:18:54 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:25 -0800 |
commit | b2d75cddc83a349ef5633f609b9734b6b957f90f (patch) | |
tree | 95e493a25eedec2722d5fb3c2ef0aabc64645b21 /ipc | |
parent | a46c9994242978ab001299cc9c906b9a3eedadcc (diff) | |
download | linux-exynos-b2d75cddc83a349ef5633f609b9734b6b957f90f.tar.gz linux-exynos-b2d75cddc83a349ef5633f609b9734b6b957f90f.tar.bz2 linux-exynos-b2d75cddc83a349ef5633f609b9734b6b957f90f.zip |
ipc: uninline some code from util.h
ipc_lock_check_down(), ipc_lock_check() and ipcget() seem too large to be
inline. Besides, they give no optimization being inline as they perform
calls inside in any case.
Moving them into ipc/util.c saves 500 bytes of vmlinux and shortens IPC
internal API.
$ ./scripts/bloat-o-meter vmlinux-orig vmlinux
add/remove: 3/2 grow/shrink: 0/10 up/down: 490/-989 (-499)
function old new delta
ipcget - 392 +392
ipc_lock_check_down - 49 +49
ipc_lock_check - 49 +49
sys_semget 119 105 -14
sys_shmget 108 86 -22
sys_msgget 100 78 -22
do_msgsnd 665 631 -34
do_msgrcv 680 644 -36
do_shmat 771 733 -38
sys_msgctl 1302 1229 -73
ipcget_new 80 - -80
sys_semtimedop 1534 1452 -82
sys_semctl 2034 1922 -112
sys_shmctl 1919 1765 -154
ipcget_public 322 - -322
The ipcget() growth is the result of gcc inlining of currently static
ipcget_new/_public.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
-rw-r--r-- | ipc/util.c | 55 | ||||
-rw-r--r-- | ipc/util.h | 60 |
2 files changed, 57 insertions, 58 deletions
diff --git a/ipc/util.c b/ipc/util.c index 5432b8e34c9b..910db7748199 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -248,7 +248,7 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size) * This routine is called by sys_msgget, sys_semget() and sys_shmget() * when the key is IPC_PRIVATE. */ -int ipcget_new(struct ipc_namespace *ns, struct ipc_ids *ids, +static int ipcget_new(struct ipc_namespace *ns, struct ipc_ids *ids, struct ipc_ops *ops, struct ipc_params *params) { int err; @@ -312,7 +312,7 @@ static int ipc_check_perms(struct kern_ipc_perm *ipcp, struct ipc_ops *ops, * * On success, the ipc id is returned. */ -int ipcget_public(struct ipc_namespace *ns, struct ipc_ids *ids, +static int ipcget_public(struct ipc_namespace *ns, struct ipc_ids *ids, struct ipc_ops *ops, struct ipc_params *params) { struct kern_ipc_perm *ipcp; @@ -710,6 +710,57 @@ struct kern_ipc_perm *ipc_lock_down(struct ipc_ids *ids, int id) return out; } +struct kern_ipc_perm *ipc_lock_check_down(struct ipc_ids *ids, int id) +{ + struct kern_ipc_perm *out; + + out = ipc_lock_down(ids, id); + if (IS_ERR(out)) + return out; + + if (ipc_checkid(out, id)) { + ipc_unlock(out); + return ERR_PTR(-EIDRM); + } + + return out; +} + +struct kern_ipc_perm *ipc_lock_check(struct ipc_ids *ids, int id) +{ + struct kern_ipc_perm *out; + + out = ipc_lock(ids, id); + if (IS_ERR(out)) + return out; + + if (ipc_checkid(out, id)) { + ipc_unlock(out); + return ERR_PTR(-EIDRM); + } + + return out; +} + +/** + * ipcget - Common sys_*get() code + * @ns : namsepace + * @ids : IPC identifier set + * @ops : operations to be called on ipc object creation, permission checks + * and further checks + * @params : the parameters needed by the previous operations. + * + * Common routine called by sys_msgget(), sys_semget() and sys_shmget(). + */ +int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, + struct ipc_ops *ops, struct ipc_params *params) +{ + if (params->key == IPC_PRIVATE) + return ipcget_new(ns, ids, ops, params); + else + return ipcget_public(ns, ids, ops, params); +} + #ifdef __ARCH_WANT_IPC_PARSE_VERSION diff --git a/ipc/util.h b/ipc/util.h index fc6b7294f764..ca245fae2f98 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -131,10 +131,6 @@ int ipc_parse_version (int *cmd); extern void free_msg(struct msg_msg *msg); extern struct msg_msg *load_msg(const void __user *src, int len); extern int store_msg(void __user *dest, struct msg_msg *msg, int len); -extern int ipcget_new(struct ipc_namespace *, struct ipc_ids *, - struct ipc_ops *, struct ipc_params *); -extern int ipcget_public(struct ipc_namespace *, struct ipc_ids *, - struct ipc_ops *, struct ipc_params *); static inline int ipc_buildid(int id, int seq) { @@ -163,57 +159,9 @@ static inline void ipc_unlock(struct kern_ipc_perm *perm) rcu_read_unlock(); } -static inline struct kern_ipc_perm *ipc_lock_check_down(struct ipc_ids *ids, - int id) -{ - struct kern_ipc_perm *out; - - out = ipc_lock_down(ids, id); - if (IS_ERR(out)) - return out; - - if (ipc_checkid(out, id)) { - ipc_unlock(out); - return ERR_PTR(-EIDRM); - } - - return out; -} - -static inline struct kern_ipc_perm *ipc_lock_check(struct ipc_ids *ids, - int id) -{ - struct kern_ipc_perm *out; - - out = ipc_lock(ids, id); - if (IS_ERR(out)) - return out; - - if (ipc_checkid(out, id)) { - ipc_unlock(out); - return ERR_PTR(-EIDRM); - } - - return out; -} - -/** - * ipcget - Common sys_*get() code - * @ns : namsepace - * @ids : IPC identifier set - * @ops : operations to be called on ipc object creation, permission checks - * and further checks - * @params : the parameters needed by the previous operations. - * - * Common routine called by sys_msgget(), sys_semget() and sys_shmget(). - */ -static inline int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, - struct ipc_ops *ops, struct ipc_params *params) -{ - if (params->key == IPC_PRIVATE) - return ipcget_new(ns, ids, ops, params); - else - return ipcget_public(ns, ids, ops, params); -} +struct kern_ipc_perm *ipc_lock_check_down(struct ipc_ids *ids, int id); +struct kern_ipc_perm *ipc_lock_check(struct ipc_ids *ids, int id); +int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, + struct ipc_ops *ops, struct ipc_params *params); #endif |