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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>		17 years ago
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boot	…
configs	…
kernel	all archs: consolidate init and exit sections in vmlinux.lds.h	17 years ago
lib	…
mm	pid namespaces: define is_global_init() and is_container_init()	18 years ago
oprofile	Combine instrumentation menus in kernel/Kconfig.instrumentation	18 years ago
platforms	…
Kconfig	spinlock: lockbreak cleanup	17 years ago
Kconfig.debug	…
Makefile	kbuild: enable 'make AFLAGS=...' to add additional options to AS	18 years ago
defconfig	…