linux.git/kernel/irq, branch v2.6.21.7

[PATCH] irq-devres: fix failure path of devm_request_irq()

2007-04-07T17:05:21+00:00

devres should be deallocated with devres_free() not kfree().  This bug
corrupts slab on IRQ request failure.  Fix it.

Signed-off-by: Tejun Heo 
Cc: Andrew Morton 
Cc: Greg KH 
Signed-off-by: Linus Torvalds

[PATCH] genirq: Mask irqs when migrating them.

2007-02-26T18:34:08+00:00

move_native_irqs tries to do the right thing when migrating irqs
by disabling them.  However disabling them is a software logical
thing, not a hardware thing.  This has always been a little flaky
and after Ingo's latest round of changes it is guaranteed to not
mask the apic.

So this patch fixes move_native_irq to directly call the mask and
unmask chip methods to guarantee that we mask the irq when we
are migrating it.  We must do this as it is required by
all code that call into the path.

Since we don't know the masked status when IRQ_DISABLED is
set so we will not be able to restore it.   The patch makes the code
just give up and trying again the next time this routing is called.

Signed-off-by: Eric W. Biederman 
Acked-by: Suresh Siddha 
Signed-off-by: Linus Torvalds

[PATCH] small irq management simplification

2007-02-16T16:14:00+00:00

Use mask_ack_irq() where possible.

Signed-off-by: Jan Beulich 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] IRQ kernel-doc fixes

2007-02-16T16:14:00+00:00

Fix kernel-doc warnings in IRQ management.

Signed-off-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] genirq: do not mask interrupts by default

2007-02-16T16:14:00+00:00

Never mask interrupts immediately upon request.  Disabling interrupts in
high-performance codepaths is rare, and on the other hand this change could
recover lost edges (or even other types of lost interrupts) by conservatively
only masking interrupts after they happen.  (NOTE: with this change the
highlevel irq-disable code still soft-disables this IRQ line - and if such an
interrupt happens then the IRQ flow handler keeps the IRQ masked.)

Mark i8529A controllers as 'never loses an edge'.

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

[PATCH] Add a function to handle interrupt affinity setting

2007-02-16T16:13:56+00:00

Provide funtions to:
 - check, whether an interrupt can set the affinity
 - pin the interrupt to a given cpu

Necessary for the ability to setup clocksources more flexible (e.g.  use the
different HPET channels per CPU)

[akpm@osdl.org: alpha build fix]
Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Cc: john stultz 
Cc: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Add irq flag to disable balancing for an interrupt

2007-02-16T16:13:56+00:00

Add a flag so we can prevent the irq balancing of an interrupt.  Move the
bits, so we have room for more :)

Necessary for the ability to setup clocksources more flexible (e.g.  use the
different HPET channels per CPU)

Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Cc: john stultz 
Cc: Roman Zippel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Scheduled removal of SA_xxx interrupt flags fixups

2007-02-14T16:09:54+00:00

The obsolete SA_xxx interrupt flags have been used despite the scheduled
removal.  Fixup the remaining users.

Signed-off-by: Thomas Gleixner 
Acked-by: Ingo Molnar 
Cc: "Luck, Tony" 
Cc: Roman Zippel 
Cc: Geert Uytterhoeven 
Cc: Jeff Garzik 
Cc: Wim Van Sebroeck 
Cc: Roland Dreier 
Cc: Alessandro Zummo 
Cc: James Bottomley 
Cc: Greg KH 
Cc: Dave Airlie 
Cc: James Simmons 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] kernel: shut up the IRQ mismatch messages

2007-02-12T17:48:28+00:00

The problem is various drivers legally validly and sensibly try to claim
IRQs but the kernel insists on vomiting forth a giant irrelevant debugging
spew when the types clash.

Edit kernel/irq/manage.c go down to mismatch: in setup_irq() and ifdef out
the if clause that checks for mismatches.  It'll then just do the right
thing and work sanely.

For the current -mm kernel this will do the trick (and moves it into shared
irq debugging as in debug mode the info spew is useful).  I've had a
variant of this in my private tree for some time as I got fed up on the
mess on boxes where old legacy IRQs get reused.

Signed-off-by: Alan Cox 
Cc: Arjan van de Ven 
Cc: Ingo Molnar 
Cc: David Woodhouse 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Debug shared irqs

2007-02-12T17:48:28+00:00

Drivers registering IRQ handlers with SA_SHIRQ really ought to be able to
handle an interrupt happening before request_irq() returns.  They also
ought to be able to handle an interrupt happening during the start of their
call to free_irq().  Let's test that hypothesis....

[bunk@stusta.de: Kconfig fixes]
Signed-off-by: David Woodhouse 
Cc: Arjan van de Ven 
Signed-off-by: Jesper Juhl 
Signed-off-by: Ingo Molnar 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds