acrn-kernel/arch/frv/lib
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
..
Makefile irq_work: Add generic hardirq context callbacks 2010-10-18 19:58:50 +02:00
__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
memcpy.S
memset.S
outsl_ns.S
outsl_sw.S