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Zhang, Yanmin 4f167fb491 [PATCH] spurious interrupt fix 
On my IA64 machine, after kernel 2.6.12-rc3 boots, an edge-triggered
interrupt (IRQ 46) keeps triggered over and over again.  There is no IRQ 46
interrupt action handler.  It has lots of impact on performance.

Kernel 2.6.10 and its prior versions have no the problem.  Basically,
kernel 2.6.10 will mask the spurious edge interrupt if the interrupt is
triggered for the second time and its status includes
IRQ_DISABLE|IRQ_PENDING.

Originally, IA64 kernel has its own specific _irq_desc definitions in file
arch/ia64/kernel/irq.c.  The definition initiates _irq_desc[irq].status to
IRQ_DISABLE.  Since kernel 2.6.11, it was moved to architecture independent
codes, i.e.  kernel/irq/handle.c, but kernel/irq/handle.c initiates
_irq_desc[irq].status to 0 instead of IRQ_DISABLE.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-05-17 07:59:18 -07:00
..
irq [PATCH] spurious interrupt fix 2005-05-17 07:59:18 -07:00
power [PATCH] DocBook: changes and extensions to the kernel documentation 2005-05-01 08:59:25 -07:00
Makefile [PATCH] ppc64: remove hidden -fno-omit-frame-pointer for schedule.c 2005-05-05 16:36:32 -07:00
acct.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
audit.c Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-05 13:59:37 +01:00
auditsc.c [AUDIT] LOGIN message credentials 2005-04-29 17:30:07 +01:00
capability.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
compat.c [PATCH] Fix get_compat_sigevent() 2005-04-16 15:24:01 -07:00
configs.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpuset.c [PATCH] cpuset: remove function attribute const 2005-04-16 15:25:59 -07:00
dma.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exec_domain.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exit.c [patch] MCA recovery module undefined symbol fix 2005-05-03 13:58:17 -07:00
extable.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fork.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
futex.c [PATCH] convert that currently tests _NSIG directly to use valid_signal() 2005-05-01 08:59:14 -07:00
intermodule.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
itimer.c [PATCH] setitimer timer expires too early 2005-05-05 16:36:41 -07:00
kallsyms.c [PATCH] ppc32: platform-specific functions missing from kallsyms. 2005-05-05 16:36:31 -07:00
kfifo.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kmod.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.c [PATCH] kprobes: Allow multiple kprobes at the same address 2005-05-05 16:36:39 -07:00
ksysfs.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kthread.c [PATCH] use smp_mb/wmb/rmb where possible 2005-05-01 08:58:47 -07:00
module.c [PATCH] Change synchronize_kernel to _rcu and _sched 2005-05-01 08:59:04 -07:00
panic.c [SPARC]: Stop-A printk cleanup 2005-04-24 20:38:02 -07:00
params.c [PATCH] kernel/param.c: don't use .max when .num is NULL in param_array_set() 2005-04-16 15:25:42 -07:00
pid.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix-cpu-timers.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
posix-timers.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
printk.c [PATCH] clean up kernel messages 2005-05-01 08:59:02 -07:00
profile.c [PATCH] Change synchronize_kernel to _rcu and _sched 2005-05-01 08:59:04 -07:00
ptrace.c [PATCH] convert that currently tests _NSIG directly to use valid_signal() 2005-05-01 08:59:14 -07:00
rcupdate.c [PATCH] Deprecate synchronize_kernel, GPL replacement 2005-05-01 08:59:04 -07:00
resource.c [PATCH] pci enumeration on ixp2000: overflow in kernel/resource.c 2005-04-16 15:25:58 -07:00
sched.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
seccomp.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.c [PATCH] convert that currently tests _NSIG directly to use valid_signal() 2005-05-01 08:59:14 -07:00
softirq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
stop_machine.c [PATCH] use smp_mb/wmb/rmb where possible 2005-05-01 08:58:47 -07:00
sys.c [PATCH] correctly name the Shell sort 2005-05-05 16:36:50 -07:00
sys_ni.c [PATCH] consolidate sys_shmat 2005-05-01 08:59:12 -07:00
sysctl.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
time.c [PATCH] time interpolator: Fix settimeofday inaccuracy 2005-04-28 08:13:58 -07:00
timer.c [PATCH] use smp_mb/wmb/rmb where possible 2005-05-01 08:58:47 -07:00
uid16.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
user.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
wait.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
workqueue.c [PATCH] re-export cancel_rearming_delayed_workqueue 2005-04-16 15:23:59 -07:00