linux-stable.git/arch/x86/kernel/devicetree.c, branch linux-4.3.y

Merge tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2015-07-02T17:30:48+00:00

Pull module_init replacement part one from Paul Gortmaker:
 "Replace module_init with equivalent device_initcall in non modules.

  This series of commits converts non-modular code that is using the
  module_init() call to hook itself into the system to instead use
  device_initcall().

  The conversion is a runtime no-op, since module_init actually becomes
  __initcall in the non-modular case, and that in turn gets mapped onto
  device_initcall.  A couple files show a larger negative diffstat,
  representing ones that had a module_exit function that we remove here
  vs previously relying on the linker to dispose of it.

  We make this conversion now, so that we can relocate module_init from
  init.h into module.h in the future.

  The files changed here are just limited to those that would otherwise
  have to add module.h to obviously non-modular code, in order to avoid
  a compile fail, as testing has shown"

* tag 'module_init-device_initcall-v4.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  MIPS: don't use module_init in non-modular cobalt/mtd.c file
  drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
  cris: don't use module_init for non-modular core eeprom.c code
  tty/metag_da: Avoid module_init/module_exit in non-modular code
  drivers/clk: don't use module_init in clk-nomadik.c which is non-modular
  xtensa: don't use module_init for non-modular core network.c code
  sh: don't use module_init in non-modular psw.c code
  mn10300: don't use module_init in non-modular flash.c code
  parisc64: don't use module_init for non-modular core perf code
  parisc: don't use module_init for non-modular core pdc_cons code
  cris: don't use module_init for non-modular core intmem.c code
  ia64: don't use module_init in non-modular sim/simscsi.c code
  ia64: don't use module_init for non-modular core kernel/mca.c code
  arm: don't use module_init in non-modular mach-vexpress/spc.c code
  powerpc: don't use module_init in non-modular 83xx suspend code
  powerpc: use device_initcall for registering rtc devices
  x86: don't use module_init in non-modular devicetree.c code
  x86: don't use module_init in non-modular intel_mid_vrtc.c

x86: don't use module_init in non-modular devicetree.c code

2015-06-16T18:12:29+00:00

The devicetree.o is built for "OF" -- which is bool, and hence
this code is either present or absent.  It will never be modular,
so using module_init as an alias for __initcall can be somewhat
misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

Reported-by: kbuild test robot 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Cc: x86@kernel.org
Signed-off-by: Paul Gortmaker

x86: Cleanup irq_domain ops

2015-04-24T13:36:55+00:00

We have 3 identical copies of the ioapic domain ops for acpi, mpparse,
and sfi. Have a global one in the io_apic code and be done with it.

To avoid include hell in io_apic.h, create a private irqdomain header
and include the generic irqdomain header from there.

Signed-off-by: Thomas Gleixner 
Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: David Cohen 
Cc: Sander Eikelenboom 
Cc: David Vrabel 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Greg Kroah-Hartman 
Cc: sfi-devel@simplefirmware.org
Cc: Bjorn Helgaas 
Cc: Benjamin Herrenschmidt 
Cc: Rafael J. Wysocki 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Borislav Petkov 
Cc: Dimitri Sivanich 
Cc: Len Brown 
Cc: Pavel Machek 
Cc: Grant Likely 
Cc: Rob Herring 
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1428978610-28986-32-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces

2015-04-24T13:36:51+00:00

Convert IOAPIC driver to support and use hierarchical irqdomain
interfaces.  It's a little big, but would break bisecting if we split
it into multiple patches.

Fold in a patch from Andy Shevchenko 
to make it bisectable.
http://lkml.org/lkml/2014/12/10/622

Signed-off-by: Jiang Liu 
Tested-by: Joerg Roedel 
Cc: Konrad Rzeszutek Wilk 
Cc: Sander Eikelenboom 
Cc: David Vrabel 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Greg Kroah-Hartman 
Cc: Andy Shevchenko 
Cc: sfi-devel@simplefirmware.org
Cc: Bjorn Helgaas 
Cc: Benjamin Herrenschmidt 
Cc: Rafael J. Wysocki 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Borislav Petkov 
Cc: Dimitri Sivanich 
Cc: Len Brown 
Cc: Pavel Machek 
Cc: Grant Likely 
Cc: Rob Herring 
Cc: David Rientjes 
Cc: David Cohen 
Link: http://lkml.kernel.org/r/1428905519-23704-38-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86/mm: Use early_memunmap() instead of early_iounmap()

2015-02-24T14:58:06+00:00

Memory mapped via early_memremap() should be unmapped with
early_memunmap() instead of early_iounmap().

Signed-off-by: Juergen Gross 
Cc: matt.fleming@intel.com
Link: http://lkml.kernel.org/r/1424769211-11378-2-git-send-email-jgross@suse.com
Signed-off-by: Ingo Molnar

x86, irq, devicetree: Release IOAPIC pin when PCI device is disabled

2014-06-21T21:05:44+00:00

Release IOAPIC pin associated with PCI device when the PCI device
is disabled.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Paul Gortmaker 
Cc: Greg Kroah-Hartman 
Cc: Benjamin Herrenschmidt 
Cc: Grant Likely 
Cc: Rafael J. Wysocki 
Cc: Bjorn Helgaas 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Rob Herring 
Cc: Michal Simek 
Cc: Tony Lindgren 
Link: http://lkml.kernel.org/r/1402302011-23642-42-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86, irq, devicetree: Use common irqdomain map interface to program IOAPIC pins

2014-06-21T21:05:43+00:00

Refine devicetree to use common irqdomain map interface to program
IOAPIC pins, so we can unify the callsite to progam IOAPIC pins.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Paul Gortmaker 
Cc: Greg Kroah-Hartman 
Cc: Benjamin Herrenschmidt 
Cc: Grant Likely 
Cc: Rafael J. Wysocki 
Cc: Bjorn Helgaas 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Rob Herring 
Cc: Michal Simek 
Cc: Tony Lindgren 
Link: http://lkml.kernel.org/r/1402302011-23642-34-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86, devicetree, irq: Use common mechanism to support irqdomain

2014-06-21T21:05:43+00:00

Now the ioapic driver provides a common interface to create irqdomain,
so replace the private implementation.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Paul Gortmaker 
Cc: Greg Kroah-Hartman 
Cc: Benjamin Herrenschmidt 
Cc: Grant Likely 
Cc: Rafael J. Wysocki 
Cc: Bjorn Helgaas 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Rob Herring 
Cc: Michal Simek 
Cc: Tony Lindgren 
Link: http://lkml.kernel.org/r/1402302011-23642-29-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86, irq: Enhance mp_register_ioapic() to support irqdomain

2014-06-21T21:05:42+00:00

Enhance function mp_register_ioapic() to support irqdomain.
When registering IOAPIC, caller may provide callbacks and parameters
for creating irqdomain. The IOAPIC core will create irqdomain later
if caller has passed in corresponding parameters.

Signed-off-by: Jiang Liu 
Cc: Konrad Rzeszutek Wilk 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Paul Gortmaker 
Cc: Greg Kroah-Hartman 
Cc: sfi-devel@simplefirmware.org
Cc: Benjamin Herrenschmidt 
Cc: Grant Likely 
Cc: Rafael J. Wysocki 
Cc: Bjorn Helgaas 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Len Brown 
Cc: Pavel Machek 
Cc: Rob Herring 
Cc: Michal Simek 
Cc: Tony Lindgren 
Link: http://lkml.kernel.org/r/1402302011-23642-25-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner

x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of NR_IRQS_LEGACY

2014-06-21T21:05:42+00:00

Some platforms, such as Intel MID and mshypv, do not support legacy
interrupt controllers. So count legacy IRQs by legacy_pic->nr_legacy_irqs
instead of hard-coded NR_IRQS_LEGACY.

Signed-off-by: Jiang Liu 
Cc: Tony Luck 
Cc: Joerg Roedel 
Cc: Paul Gortmaker 
Cc: Greg Kroah-Hartman 
Cc: xen-devel@lists.xenproject.org
Cc: Benjamin Herrenschmidt 
Cc: Grant Likely 
Cc: Rafael J. Wysocki 
Cc: Bjorn Helgaas 
Cc: Randy Dunlap 
Cc: Yinghai Lu 
Cc: Len Brown 
Cc: Pavel Machek 
Cc: Konrad Rzeszutek Wilk 
Cc: Rob Herring 
Cc: Michal Simek 
Cc: Tony Lindgren 
Acked-by: David Vrabel 
Link: http://lkml.kernel.org/r/1402302011-23642-20-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner