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Commit bb57c3ed authored by Davide Libenzi's avatar Davide Libenzi Committed by Linus Torvalds
Browse files

epoll: remove debugging code 



Remove debugging code from epoll.  There's no need for it to be included
into mainline code.

Signed-off-by: default avatarDavide Libenzi <davidel@xmailserver.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 296e236e

fs/eventpoll.c

+11 −67
Original line number Diff line number Diff line
@@ -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").

	 */

	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,

	error = anon_inode_getfd("[eventpoll]", &eventpoll_fops, ep,

				 flags & O_CLOEXEC);

	if (fd < 0)

	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;

}