linux/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 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
__ashrdi3.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
__lshrdi3.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
__muldi3.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
__negdi2.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
__ucmpdi2.S [PATCH] frv: implement and export various things required by modules 2006-01-08 20:13:36 -08:00
atomic-ops.S FRV: Implement atomic64_t 2009-07-01 19:38:09 -07:00
atomic64-ops.S FRV: Implement atomic64_t 2009-07-01 19:38:09 -07:00
cache.S trivial: fix typos "man[ae]g?ment" -> "management" 2009-09-21 15:14:56 +02:00
checksum.c [NET]: FRV checksum annotations. 2006-12-02 21:23:03 -08:00
insl_ns.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
insl_sw.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
memcpy.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
memset.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
outsl_ns.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
outsl_sw.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00