Peter Zijlstra e360adbe29 irq_work: Add generic hardirq context callbacks ... Provide a mechanism that allows running code in IRQ context. It is most useful for NMI code that needs to interact with the rest of the system -- like wakeup a task to drain buffers. Perf currently has such a mechanism, so extract that and provide it as a generic feature, independent of perf so that others may also benefit. The IRQ context callback is generated through self-IPIs where possible, or on architectures like powerpc the decrementer (the built-in timer facility) is set to generate an interrupt immediately. Architectures that don't have anything like this get to do with a callback from the timer tick. These architectures can call irq_work_run() at the tail of any IRQ handlers that might enqueue such work (like the perf IRQ handler) to avoid undue latencies in processing the work. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [ various fixes ] Signed-off-by: Huang Ying <ying.huang@intel.com> LKML-Reference: <1287036094.7768.291.camel@yhuang-dev> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2010-10-18 19:58:50 +02:00
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__ashldi3.S
__ashrdi3.S
__lshrdi3.S
__muldi3.S
__negdi2.S
__ucmpdi2.S
atomic-ops.S
atomic64-ops.S
cache.S	trivial: fix typos "man[ae]g?ment" -> "management"	2009-09-21 15:14:56 +02:00
checksum.c
insl_ns.S
insl_sw.S
Makefile	irq_work: Add generic hardirq context callbacks	2010-10-18 19:58:50 +02:00
memcpy.S
memset.S
outsl_ns.S
outsl_sw.S