]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] uml: remove winch sem
authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Fri, 8 Jul 2005 00:56:52 +0000 (17:56 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Fri, 8 Jul 2005 01:23:44 +0000 (18:23 -0700)
commit605a69ac81249cca531cdc6b3e695f15dda63102
treef42d781478ddf14288d3952263363efde1bc45a2
parent3f580470baa3afc423e38fdc6e19667446b5aac0
[PATCH] uml: remove winch sem

Replace a semaphore (winch_handler_sem) used in atomic code with a
spinlock, and reduces as needed the amount of protected code to the bare
minimum (for instance no kmalloc calls are needed).

This fixes the last problems with spinlocking (in UP mode with DEBUG
options); the semaphore, taken inside spinlocks, caused a "spin_lock was
already locked" warning, without this patch.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/um/drivers/line.c