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linux-sg2042/arch/alpha/kernel
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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
..
.gitignore alpha: .gitignore vmlinux.lds 2009-01-15 16:39:40 -08:00
Makefile alpha: implement HW performance events on the EV67 and later CPUs 2010-08-09 20:45:04 -07:00
alpha_ksyms.c Generic semaphore implementation 2008-04-17 10:42:34 -04:00
asm-offsets.c CRED: Separate task security context from task_struct 2008-11-14 10:39:16 +11:00
binfmt_loader.c alpha: binfmt_aout fix 2009-05-02 15:36:10 -07:00
console.c ALPHA: support graphics on non-zero PCI domains 2007-06-01 08:18:29 -07:00
core_apecs.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_cia.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_irongate.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
core_lca.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_marvel.c arch/alpha/kernel: Add kmalloc NULL tests 2009-11-30 15:38:19 -05:00
core_mcpcia.c alpha: fixes for specific machine types 2007-04-17 16:36:27 -07:00
core_polaris.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
core_t2.c alpha: Fix fallout from locking changes 2009-12-14 23:55:32 +01:00
core_titan.c arch/alpha/kernel: Add kmalloc NULL tests 2009-11-30 15:38:19 -05:00
core_tsunami.c alpha: remove remaining __FUNCTION__ occurrences 2008-04-28 08:58:27 -07:00
core_wildfire.c [PATCH] alpha pt_regs cleanups: machine_check() 2006-10-08 12:32:36 -07:00
entry.S alpha: switch osf_sigprocmask() to use of sigprocmask() 2010-09-27 12:19:53 -07:00
err_common.c PCI: Cleanup the includes of <linux/pci.h> 2007-05-02 19:02:35 -07:00
err_ev6.c alpha: Use static const char * const where possible 2010-09-18 23:06:17 -04:00
err_ev7.c alpha: titan and marvel build fixes 2009-05-02 15:36:10 -07:00
err_impl.h alpha: titan and marvel build fixes 2009-05-02 15:36:10 -07:00
err_marvel.c alpha: Use static const char * const where possible 2010-09-18 23:06:17 -04:00
err_titan.c alpha: Use static const char * const where possible 2010-09-18 23:06:17 -04:00
es1888.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gct.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head.S alpha: convert to use __HEAD and HEAD_TEXT macros. 2009-04-26 09:20:38 -07:00
init_task.c alpha: use .data.init_task instead of .data.init_thread. 2009-09-24 17:16:22 -07:00
io.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c alpha: add performance monitor interrupt counter 2010-08-09 20:45:03 -07:00
irq_alpha.c alpha: implement HW performance events on the EV67 and later CPUs 2010-08-09 20:45:04 -07:00
irq_i8259.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
irq_impl.h alpha: remove obsolete hw_interrupt_type 2009-06-16 19:47:46 -07:00
irq_pyxis.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
irq_srm.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
machvec_impl.h alpha: fix RTC on marvel 2009-01-15 16:39:40 -08:00
module.c alpha: handle kcalloc failure 2008-04-28 08:58:27 -07:00
osf_sys.c alpha: kill big kernel lock 2010-09-18 23:06:18 -04:00
pc873xx.c alpha: Detect Super IO chip, no IDE on Avanti, enable EPP19 2010-06-15 14:19:08 -04:00
pc873xx.h alpha: Detect Super IO chip, no IDE on Avanti, enable EPP19 2010-06-15 14:19:08 -04:00
pci-noop.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pci-sysfs.c alpha: remove unnecessary cast from void* in assignment. 2010-09-18 23:06:17 -04:00
pci.c resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
pci_impl.h alpha: AGP update (fixes compile failure) 2009-09-24 07:21:06 -07:00
pci_iommu.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
perf_event.c alpha: Fix HW performance counters to be stopped properly 2010-09-15 10:43:59 +02:00
process.c alpha: fix usp value in multithreaded coredumps 2010-09-25 14:38:13 -07:00
proto.h Fix call to replaced SuperIO functions 2010-08-31 22:45:31 -04:00
ptrace.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
setup.c alpha: bad macro expansion, parameter is member 2009-06-16 19:47:46 -07:00
signal.c Fix up more fallout form alpha signal cleanups 2010-09-30 08:37:38 -07:00
smc37c93x.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
smc37c669.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
smp.c cpumask: arch_send_call_function_ipi_mask: alpha 2009-09-24 09:34:43 +09:30
srm_env.c alpha: remove unnecessary cast from void* in assignment. 2010-09-18 23:06:17 -04:00
srmcons.c alpha: fix trivial section mismatch warnings 2007-07-16 09:05:37 -07:00
sys_alcor.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_cabriolet.c Fix call to replaced SuperIO functions 2010-08-31 22:45:31 -04:00
sys_dp264.c alpha: remove trailing spaces in messages 2010-03-18 22:34:08 -04:00
sys_eb64p.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_eiger.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_jensen.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_marvel.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_miata.c PCI: alpha: use generic pci_swizzle_interrupt_pin() 2009-01-07 11:12:53 -08:00
sys_mikasa.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_nautilus.c alpha: nautilus - fix hang on boot 2009-01-15 16:39:40 -08:00
sys_noritake.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_rawhide.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_ruffian.c arch/alpha/kernel/sys_ruffian.c: Use DIV_ROUND_CLOSEST 2009-11-30 15:37:25 -05:00
sys_rx164.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_sable.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
sys_sio.c alpha: Detect Super IO chip, no IDE on Avanti, enable EPP19 2010-06-15 14:19:08 -04:00
sys_sx164.c alpha: more fixes for specific machine types 2007-04-17 16:36:27 -07:00
sys_takara.c Fix call to replaced SuperIO functions 2010-08-31 22:45:31 -04:00
sys_titan.c alpha: remove trailing spaces in messages 2010-03-18 22:34:08 -04:00
sys_wildfire.c alpha: Fixup last users of irq_chip->typename 2009-11-30 22:51:31 -05:00
systbls.S alpha: switch osf_sigprocmask() to use of sigprocmask() 2010-09-27 12:19:53 -07:00
time.c irq_work: Add generic hardirq context callbacks 2010-10-18 19:58:50 +02:00
traps.c alpha: kill big kernel lock 2010-09-18 23:06:18 -04:00
vmlinux.lds.S alpha: Fix duplicate <asm/thread_info.h> include 2009-09-27 14:46:05 -07:00