diff options
Diffstat (limited to 'fs/eventpoll.c')
| -rw-r--r-- | fs/eventpoll.c | 78 |
1 files changed, 11 insertions, 67 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index e24d137..205a1e1 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -71,24 +71,6 @@ * a better scalability. */ -#define DEBUG_EPOLL 0 - -#if DEBUG_EPOLL > 0 -#define DPRINTK(x) printk x -#define DNPRINTK(n, x) do { if ((n) <= DEBUG_EPOLL) printk x; } while (0) -#else /* #if DEBUG_EPOLL > 0 */ -#define DPRINTK(x) (void) 0 -#define DNPRINTK(n, x) (void) 0 -#endif /* #if DEBUG_EPOLL > 0 */ - -#define DEBUG_EPI 0 - -#if DEBUG_EPI != 0 -#define EPI_SLAB_DEBUG (SLAB_DEBUG_FREE | SLAB_RED_ZONE /* | SLAB_POISON */) -#else /* #if DEBUG_EPI != 0 */ -#define EPI_SLAB_DEBUG 0 -#endif /* #if DEBUG_EPI != 0 */ - /* Epoll private bits inside the event mask */ #define EP_PRIVATE_BITS (EPOLLONESHOT | EPOLLET) @@ -567,9 +549,6 @@ static int ep_remove(struct eventpoll *ep, struct epitem *epi) atomic_dec(&ep->user->epoll_watches); - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_remove(%p, %p)\n", - current, ep, file)); - return 0; } @@ -625,7 +604,6 @@ static int ep_eventpoll_release(struct inode *inode, struct file *file) if (ep) ep_free(ep); - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: close() ep=%p\n", current, ep)); return 0; } @@ -750,8 +728,6 @@ static int ep_alloc(struct eventpoll **pep) *pep = ep; - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_alloc() ep=%p\n", - current, ep)); return 0; free_uid: @@ -785,9 +761,6 @@ static struct epitem *ep_find(struct eventpoll *ep, struct file *file, int fd) } } - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_find(%p) -> %p\n", - current, file, epir)); - return epir; } @@ -803,9 +776,6 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k struct epitem *epi = ep_item_from_wait(wait); struct eventpoll *ep = epi->ep; - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: poll_callback(%p) epi=%p ep=%p\n", - current, epi->ffd.file, epi, ep)); - spin_lock_irqsave(&ep->lock, flags); /* @@ -978,9 +948,6 @@ static int ep_insert(struct eventpoll *ep, struct epoll_event *event, if (pwake) ep_poll_safewake(&ep->poll_wait); - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_insert(%p, %p, %d)\n", - current, ep, tfile, fd)); - return 0; error_unregister: @@ -1197,41 +1164,30 @@ retry: */ SYSCALL_DEFINE1(epoll_create1, int, flags) { - int error, fd = -1; - struct eventpoll *ep; + int error; + struct eventpoll *ep = NULL; /* Check the EPOLL_* constant for consistency. */ BUILD_BUG_ON(EPOLL_CLOEXEC != O_CLOEXEC); if (flags & ~EPOLL_CLOEXEC) return -EINVAL; - - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d)\n", - current, flags)); - /* - * Create the internal data structure ( "struct eventpoll" ). + * Create the internal data structure ("struct eventpoll"). */ error = ep_alloc(&ep); - if (error < 0) { - fd = error; - goto error_return; - } - + if (error < 0) + return error; /* * Creates all the items needed to setup an eventpoll file. That is, * a file structure and a free file descriptor. */ - fd = anon_inode_getfd("[eventpoll]", &eventpoll_fops, ep, - flags & O_CLOEXEC); - if (fd < 0) + error = anon_inode_getfd("[eventpoll]", &eventpoll_fops, ep, + flags & O_CLOEXEC); + if (error < 0) ep_free(ep); -error_return: - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n", - current, flags, fd)); - - return fd; + return error; } SYSCALL_DEFINE1(epoll_create, int, size) @@ -1256,9 +1212,6 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, struct epitem *epi; struct epoll_event epds; - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p)\n", - current, epfd, op, fd, event)); - error = -EFAULT; if (ep_op_has_event(op) && copy_from_user(&epds, event, sizeof(struct epoll_event))) @@ -1335,8 +1288,6 @@ error_tgt_fput: error_fput: fput(file); error_return: - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p) = %d\n", - current, epfd, op, fd, event, error)); return error; } @@ -1352,9 +1303,6 @@ SYSCALL_DEFINE4(epoll_wait, int, epfd, struct epoll_event __user *, events, struct file *file; struct eventpoll *ep; - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d)\n", - current, epfd, events, maxevents, timeout)); - /* The maximum number of event must be greater than zero */ if (maxevents <= 0 || maxevents > EP_MAX_EVENTS) return -EINVAL; @@ -1391,8 +1339,6 @@ SYSCALL_DEFINE4(epoll_wait, int, epfd, struct epoll_event __user *, events, error_fput: fput(file); error_return: - DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d) = %d\n", - current, epfd, events, maxevents, timeout, error)); return error; } @@ -1464,13 +1410,11 @@ static int __init eventpoll_init(void) /* Allocates slab cache used to allocate "struct epitem" items */ epi_cache = kmem_cache_create("eventpoll_epi", sizeof(struct epitem), - 0, SLAB_HWCACHE_ALIGN|EPI_SLAB_DEBUG|SLAB_PANIC, - NULL); + 0, SLAB_HWCACHE_ALIGN | SLAB_PANIC, NULL); /* Allocates slab cache used to allocate "struct eppoll_entry" */ pwq_cache = kmem_cache_create("eventpoll_pwq", - sizeof(struct eppoll_entry), 0, - EPI_SLAB_DEBUG|SLAB_PANIC, NULL); + sizeof(struct eppoll_entry), 0, SLAB_PANIC, NULL); return 0; } |