linux-toradex.git/include/linux/interrupt.h, branch v2.6.26-rc5

proper __do_softirq() prototype

2008-04-29T15:06:02+00:00

Add a proper prototype for __do_softirq() in include/linux/interrupt.h

Signed-off-by: Adrian Bunk 
Acked-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[S390] genirq/clockevents: move irq affinity prototypes/inlines to interrupt.h

2008-04-17T05:47:05+00:00

> Generic code is not supposed to include irq.h. Replace this include
> by linux/hardirq.h instead and add/replace an include of linux/irq.h
> in asm header files where necessary.
> This change should only matter for architectures that make use of
> GENERIC_CLOCKEVENTS.
> Architectures in question are mips, x86, arm, sh, powerpc, uml and sparc64.
>
> I did some cross compile tests for mips, x86_64, arm, powerpc and sparc64.
> This patch fixes also build breakages caused by the include replacement in
> tick-common.h.

I generally dislike adding optional linux/* includes in asm/* includes -
I'm nervous about this causing include loops.

However, there's a separate point to be discussed here.

That is, what interfaces are expected of every architecture in the kernel.
If generic code wants to be able to set the affinity of interrupts, then
that needs to become part of the interfaces listed in linux/interrupt.h
rather than linux/irq.h.

So what I suggest is this approach instead (against Linus' tree of a
couple of days ago) - we move irq_set_affinity() and irq_can_set_affinity()
to linux/interrupt.h, change the linux/irq.h includes to linux/interrupt.h
and include asm/irq_regs.h where needed (asm/irq_regs.h is supposed to be
rarely used include since not much touches the stacked parent context
registers.)

Build tested on ARM PXA family kernels and ARM's Realview platform
kernels which both use genirq.

[ tglx@linutronix.de: add GENERIC_HARDIRQ dependencies ]

Signed-off-by: Russell King 
Signed-off-by: Thomas Gleixner 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

include/linux: Remove all users of FASTCALL() macro

2008-02-14T00:21:18+00:00

FASTCALL() is always expanded to empty, remove it.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Harvey Harrison 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

proper show_interrupts() prototype

2008-02-06T18:41:02+00:00

Add a proper prototype for show_interrupts() in include/linux/interrupt.h

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Preempt-RCU: Use softirq instead of tasklets for

2008-01-25T20:08:23+00:00

This patch makes RCU use softirq instead of tasklets.

It also adds a memory barrier after raising the softirq
inorder to ensure that the cpu sees the most recently updated
value of rcu->cur while processing callbacks.
The discussion of the related theoretical race pointed out
by James Huang can be found here --> http://lkml.org/lkml/2007/11/20/603

Signed-off-by: Gautham R Shenoy 
Signed-off-by: Steven Rostedt 
Signed-off-by: Dipankar Sarma 
Reviewed-by: Steven Rostedt 
Signed-off-by: Ingo Molnar

Completely remove deprecated IRQ flags (SA_*)

2007-10-17T15:43:00+00:00

Only very little files use the deprecated SA_* IRQ flags in latest pull.  This
patch series removes such macros from the tree and transfrom old code to the
new IRQF_* flags.

I've grepped the whole tree to make sure that no more files than the patched
ones use such deprecated macros.  I hope this series won't introduce build
errors.

Signed-off-by: Ahmed S. Darwish 
Cc: Ralf Baechle 
Cc: James Bottomley 
Cc: Matthew Wilcox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

provide stubs for enable_irq_wake() and disable_irq_wake()

2007-10-16T16:42:50+00:00

Provide {enable,disable}_irq_wakeup dummies for undefined
cross-compilers for platforms without CONFIG_GENERIC_IRQ.

Needed by wake-up-from-a-serial-port.patch

Signed-off-by: Guennadi Liakhovetski 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rip some includes from linux/interrupt.h

2007-07-29T02:42:22+00:00

Signed-off-by: Al Viro 
Acked-by: Jeff Garzik 
Signed-off-by: Linus Torvalds

take declarations of enable_irq() et.al. to linux/interrupt.h

2007-07-22T18:44:00+00:00

Now that the last inlined instances are gone, all that is left to do
is turning disable_irq_nosync on arm26 and m68k from defines to aliases
and we are all set - we can make these externs in linux/interrupt.h
uncoditional and kill remaining instances in asm/irq.h

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

Add hard_irq_disable()

2007-05-11T15:29:34+00:00

Some architectures, like powerpc, implement lazy disabling of interrupts.
That means that on those, local_irq_disable() doesn't actually disable
interrupts on the CPU, but only sets some per CPU flag which cause them to be
disabled only if an interrupt actually occurs.

However, in some cases, such as stop_machine, we really want interrupts to be
fully disabled.  For example, I have code using stop machine to do ECC error
injection, used to verify operations of the ECC hardware, that sort of thing.
It really needs to make sure that nothing is actually writing to memory while
the injection happens.  Similar examples can be found in other low level bits
and pieces.

This patch implements a generic hard_irq_disable() function which is meant to
be called -after- local_irq_disable() and ensures that interrupts are fully
disabled on that CPU.  The default implementation is a nop, though powerpc
does already provide an appropriate one.

Signed-off-by: Benjamin Herrenschmidt 
Cc: Rusty Russell 
Cc: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds