Nick Piggin 95c354fe9f spinlock: lockbreak cleanup ... The break_lock data structure and code for spinlocks is quite nasty. Not only does it double the size of a spinlock but it changes locking to a potentially less optimal trylock. Put all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a __raw_spin_is_contended that uses the lock data itself to determine whether there are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is not set. Rename need_lockbreak to spin_needbreak, make it use spin_is_contended to decouple it from the spinlock implementation, and make it typesafe (rwlocks do not have any need_lockbreak sites -- why do they even get bloated up with that break_lock then?). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2008-01-30 13:31:20 +01:00
..
boot
configs	m32r: Add defconfig file for the usrv platform.	2007-09-03 11:30:18 +09:00
kernel	all archs: consolidate init and exit sections in vmlinux.lds.h	2008-01-28 23:21:17 +01:00
lib	Various typo fixes.	2007-02-17 19:07:33 +01:00
mm	pid namespaces: define is_global_init() and is_container_init()	2007-10-19 11:53:37 -07:00
oprofile	Combine instrumentation menus in kernel/Kconfig.instrumentation	2007-10-19 11:53:54 -07:00
platforms	m32r: Move dot.gdbinit files	2007-09-03 11:30:18 +09:00
defconfig	m32r: Update defconfig files for 2.6.23-rc1	2007-09-03 11:30:18 +09:00
Kconfig	spinlock: lockbreak cleanup	2008-01-30 13:31:20 +01:00
Kconfig.debug
Makefile	kbuild: enable 'make AFLAGS=...' to add additional options to AS	2007-10-15 21:59:31 +02:00