diff options
author | Jeff Dike <jdike@addtoit.com> | 2006-07-10 04:45:10 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-10 13:24:23 -0700 |
commit | bfaafd7184f044c63cd937cb0ffb4334b4ec7635 (patch) | |
tree | 3c5d70d6fc2e5d8d3975daedb34e208eadab105a /arch/um/kernel | |
parent | 8ae43ff8aa60f81f5d82a4911d704ce8902d11fb (diff) | |
download | blackbird-op-linux-bfaafd7184f044c63cd937cb0ffb4334b4ec7635.tar.gz blackbird-op-linux-bfaafd7184f044c63cd937cb0ffb4334b4ec7635.zip |
[PATCH] uml: remove spinlock wrapper functions
The irq_spinlock is not needed from user code any more, so the irq_lock and
irq_unlock wrappers can go away. This also changes the name of the lock to
irq_lock.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/kernel')
-rw-r--r-- | arch/um/kernel/irq.c | 45 |
1 files changed, 16 insertions, 29 deletions
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index 519cdb0a7708..27bc58ad38fd 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -123,6 +123,8 @@ static void maybe_sigio_broken(int fd, int type) } } +static DEFINE_SPINLOCK(irq_lock); + int activate_fd(int irq, int fd, int type, void *dev_id) { struct pollfd *tmp_pfd; @@ -166,7 +168,7 @@ int activate_fd(int irq, int fd, int type, void *dev_id) * this is called only from process context, and can be locked with * a semaphore. */ - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); for (irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next) { if ((irq_fd->fd == fd) && (irq_fd->type == type)) { printk("Registering fd %d twice\n", fd); @@ -199,7 +201,7 @@ int activate_fd(int irq, int fd, int type, void *dev_id) * so we will not be able to put new pollfd struct to pollfds * then we free the buffer tmp_fds and try again. */ - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); kfree(tmp_pfd); tmp_pfd = NULL; @@ -207,14 +209,14 @@ int activate_fd(int irq, int fd, int type, void *dev_id) if (tmp_pfd == NULL) goto out_kfree; - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); } /*-------------*/ *last_irq_ptr = new_fd; last_irq_ptr = &new_fd->next; - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); /* This calls activate_fd, so it has to be outside the critical * section. @@ -224,7 +226,7 @@ int activate_fd(int irq, int fd, int type, void *dev_id) return(0); out_unlock: - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); out_kfree: kfree(new_fd); out: @@ -235,9 +237,9 @@ static void free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg) { unsigned long flags; - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); os_free_irq_by_cb(test, arg, active_fds, &last_irq_ptr); - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); } struct irq_and_dev { @@ -304,14 +306,14 @@ void reactivate_fd(int fd, int irqnum) unsigned long flags; int i; - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); irq = find_irq_by_fd(fd, irqnum, &i); if (irq == NULL) { - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); return; } os_set_pollfd(i, irq->fd); - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); /* This calls activate_fd, so it has to be outside the critical * section. @@ -325,13 +327,13 @@ void deactivate_fd(int fd, int irqnum) unsigned long flags; int i; - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); irq = find_irq_by_fd(fd, irqnum, &i); if (irq == NULL) goto out; os_set_pollfd(i, -1); out: - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); } int deactivate_all_fds(void) @@ -357,7 +359,7 @@ void forward_interrupts(int pid) unsigned long flags; int err; - flags = irq_lock(); + spin_lock_irqsave(&irq_lock, flags); for (irq = active_fds; irq != NULL; irq = irq->next) { err = os_set_owner(irq->fd, pid); if (err < 0) { @@ -370,7 +372,7 @@ void forward_interrupts(int pid) irq->pid = pid; } - irq_unlock(flags); + spin_unlock_irqrestore(&irq_lock, flags); } #endif @@ -405,21 +407,6 @@ int um_request_irq(unsigned int irq, int fd, int type, EXPORT_SYMBOL(um_request_irq); EXPORT_SYMBOL(reactivate_fd); -static DEFINE_SPINLOCK(irq_spinlock); - -unsigned long irq_lock(void) -{ - unsigned long flags; - - spin_lock_irqsave(&irq_spinlock, flags); - return flags; -} - -void irq_unlock(unsigned long flags) -{ - spin_unlock_irqrestore(&irq_spinlock, flags); -} - /* hw_interrupt_type must define (startup || enable) && * (shutdown || disable) && end */ static void dummy(unsigned int irq) |