Stefano Stabellini [Wed, 6 Oct 2010 20:12:28 +0000 (16:12 -0400)]
x86: Introduce x86_msi_ops
Introduce an x86 specific indirect mechanism to setup MSIs.
The MSI setup functions become function pointers in an x86_msi_ops
struct, that defaults to the implementation in io_apic.c and msi.c.
[v2: Use HAVE_DEFAULT_* knobs]
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Wed, 6 Oct 2010 20:05:35 +0000 (16:05 -0400)]
msi: Introduce default_[teardown|setup]_msi_irqs with fallback.
Introduce an override for the arch_[teardown|setup]_msi_irqs
that can be utilized to fallback to the default arch_* code.
If a platform wants to utilize the code paths defined
in driver/pci/msi.c it has to define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
or HAVE_DEFAULT_MSI_SETUP_IRQS. Otherwise the old mechanism
of over-ridding the arch_* works fine.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: x86@kernel.org
Konrad Rzeszutek Wilk [Tue, 22 Dec 2009 19:49:45 +0000 (14:49 -0500)]
x86/PCI: Export pci_walk_bus function.
In preperation of modularizing Xen-pcifront the pci_walk_bus
needs to be exported so that the xen-pcifront module can walk
call the pci subsystem to walk the PCI devices and claim them.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> [http://marc.info/?l=linux-pci&m=126149958010298&w=2]
Jeremy Fitzhardinge [Thu, 18 Mar 2010 18:31:30 +0000 (14:31 -0400)]
x86/PCI: make sure _PAGE_IOMAP it set on pci mappings
When mapping pci space via /sys or /proc, make sure we're really
doing a hardware mapping by setting _PAGE_IOMAP.
[ Impact: bugfix; make PCI mappings map the right pages ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: "H. Peter Anvin" <hpa@zytor.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: x86@kernel.org
Alex Nixon [Thu, 18 Mar 2010 18:28:12 +0000 (14:28 -0400)]
x86/PCI: Clean up pci_cache_line_size
Separate out x86 cache_line_size initialisation code into its own
function (so it can be shared by Xen later in this patch series)
[ Impact: cleanup ]
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: "H. Peter Anvin" <hpa@zytor.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: x86@kernel.org
Konrad Rzeszutek Wilk [Mon, 4 Oct 2010 17:43:27 +0000 (13:43 -0400)]
xen: fix shared irq device passthrough
In driver/xen/events.c, whether bind_pirq is shareable or not is
determined by desc->action is NULL or not. But in __setup_irq,
startup(irq) is invoked before desc->action is assigned with
new action. So desc->action in startup_irq is always NULL, and
bind_pirq is always not shareable. This results in pt_irq_create_bind
failure when passthrough a device which shares irq to other devices.
This patch doesn't use probing_irq to determine if pirq is shareable
or not, instead set shareable flag in irq_info according to trigger
mode in xen_allocate_pirq. Set level triggered interrupts shareable.
Thus use this flag to set bind_pirq flag accordingly.
[v2: arch/x86/xen/pci.c no more, so file skipped]
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Thu, 5 Nov 2009 21:33:09 +0000 (16:33 -0500)]
xen: Provide a variant of xen_poll_irq with timeout.
The 'xen_poll_irq_timeout' provides a method to pass in
the poll timeout for IRQs if requested. We also export
those two poll functions as Xen PCI fronted uses them.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Konrad Rzeszutek Wilk [Mon, 18 Oct 2010 14:49:10 +0000 (10:49 -0400)]
xen: Find an unbound irq number in reverse order (high to low).
In earlier Xen Linux kernels, the IRQ mapping was a straight 1:1 and the
find_unbound_irq started looking around 256 for open IRQs and up. IRQs
from 0 to 255 were reserved for PCI devices. Previous to this patch,
the 'find_unbound_irq' started looking at get_nr_hw_irqs() number.
For privileged domain where the ACPI information is available that
returns the upper-bound of what the GSIs. For non-privileged PV domains,
where ACPI is no-existent the get_nr_hw_irqs() reports the IRQ_LEGACY (16).
With PCI passthrough enabled, and with PCI cards that have IRQs pinned
to a higher number than 16 we collide with previously allocated IRQs.
Specifically the PCI IRQs collide with the IPI's for Xen functions
(as they are allocated earlier).
For example:
00:00.11 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller (prog-if 10 [OHCI])
...
Interrupt: pin A routed to IRQ 18
[root@localhost ~]# cat /proc/interrupts | head
CPU0 CPU1 CPU2
16: 38186 0 0 xen-dyn-virq timer0
17: 149 0 0 xen-dyn-ipi spinlock0
18: 962 0 0 xen-dyn-ipi resched0
and when the USB controller is loaded, the kernel reports:
IRQ handler type mismatch for IRQ 18
current handler: resched0
One way to fix this is to reverse the logic when looking for un-used
IRQ numbers and start with the highest available number. With that,
we would get:
CPU0 CPU1 CPU2
... snip ..
292: 35 0 0 xen-dyn-ipi callfunc0
293: 3992 0 0 xen-dyn-ipi resched0
294: 224 0 0 xen-dyn-ipi spinlock0
295: 57183 0 0 xen-dyn-virq timer0
NMI: 0 0 0 Non-maskable interrupts
.. snip ..
And interrupts for PCI cards are now accessible.
This patch also includes the fix, found by Ian Campbell, titled
"xen: fix off-by-one error in find_unbound_irq."
[v2: Added an explanation in the code]
[v3: Rebased on top of tip/irq/core]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Jeremy Fitzhardinge [Thu, 13 Aug 2009 19:50:37 +0000 (12:50 -0700)]
xen: statically initialize cpu_evtchn_mask_p
Sometimes cpu_evtchn_mask_p can get used early, before it has been
allocated. Statically initialize it with an initdata version to catch
any early references.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Gerd Hoffmann [Mon, 4 Oct 2010 17:42:27 +0000 (13:42 -0400)]
xen: set pirq name to something useful.
Impact: cleanup
Make pirq show useful information in /proc/interrupts
[v2: Removed the parts for arch/x86/xen/pci.c ]
Signed-off-by: Gerd Hoffmann <kraxel@xeni.home.kraxel.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jeremy Fitzhardinge [Mon, 7 Jun 2010 20:28:49 +0000 (16:28 -0400)]
xen: dynamically allocate irq & event structures
Dynamically allocate the irq_info and evtchn_to_irq arrays, so that
1) the irq_info array scales to the actual number of possible irqs,
and 2) we don't needlessly increase the static size of the kernel
when we aren't running under Xen.
Derived on patch from Mike Travis <travis@sgi.com>.
[Impact: reduce memory usage ]
[v2: Conflict in drivers/xen/events.c: Replaced alloc_bootmen with kcalloc ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Mon, 18 Oct 2010 14:41:08 +0000 (10:41 -0400)]
xen: identity map gsi->irqs
Impact: preserve compat with native
Reserve the lower irq range for use for hardware interrupts so we
can identity-map them.
[v2: Rebased on top tip/irq/core]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jeremy Fitzhardinge [Fri, 13 Feb 2009 01:22:49 +0000 (17:22 -0800)]
x86/io_apic: add get_nr_irqs_gsi()
Impact: new interface to get max GSI
Add get_nr_irqs_gsi() to return nr_irqs_gsi. Xen will use this to
determine how many irqs it needs to reserve for hardware irqs.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Jeremy Fitzhardinge [Fri, 1 Oct 2010 16:20:09 +0000 (12:20 -0400)]
xen: implement pirq type event channels
A privileged PV Xen domain can get direct access to hardware. In
order for this to be useful, it must be able to get hardware
interrupts.
Being a PV Xen domain, all interrupts are delivered as event channels.
PIRQ event channels are bound to a pirq number and an interrupt
vector. When a IO APIC raises a hardware interrupt on that vector, it
is delivered as an event channel, which we can deliver to the
appropriate device driver(s).
This patch simply implements the infrastructure for dealing with pirq
event channels.
[ Impact: integrate hardware interrupts into Xen's event scheme ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jeremy Fitzhardinge [Mon, 9 Feb 2009 20:05:46 +0000 (12:05 -0800)]
xen: define BIOVEC_PHYS_MERGEABLE()
Impact: allow Xen control of bio merging
When running in Xen domain with device access, we need to make sure
the block subsystem doesn't merge requests across pages which aren't
machine physically contiguous. To do this, we define our own
BIOVEC_PHYS_MERGEABLE. When CONFIG_XEN isn't enabled, or we're not
running in a Xen domain, this has identical behaviour to the normal
implementation. When running under Xen, we also make sure the
underlying machine pages are the same or adjacent.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Alex Nixon [Mon, 9 Feb 2009 20:05:46 +0000 (12:05 -0800)]
xen: Don't disable the I/O space
If a guest domain wants to access PCI devices through the frontend
driver (coming later in the patch series), it will need access to the
I/O space.
[ Impact: Allow for domU IO access, preparing for pci passthrough ]
Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thomas Gleixner [Sat, 16 Oct 2010 19:17:08 +0000 (21:17 +0200)]
arm: Use ARCH_IRQ_INIT_FLAGS
The core code now initializes the requested number of interrupts and
sets the flags in irq_desc.status which are requested by the
architecture via ARCH_IRQ_INIT_FLAGS.
Add ARCH_IRQ_INIT_FLAGS and remove the loop which sets those flags
after the irq descriptors are allocated.
[ This patch should have been in the original irq rework and got
dropped accidentaly ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
Anand Gadiyar [Thu, 14 Oct 2010 17:29:57 +0000 (22:59 +0530)]
genirq, ARM: Fix boot on ARM platforms
Commit
b683de2b3 in linux-next as of
20101014 (genirq: Query
arch for number of early descriptors) seems to have broken
bootup on several ARM boards - my beagleboard gives the
following dump with earlyprintk:
NR_IRQS:402
Unable to handle kernel NULL pointer dereference at virtual
address
00000028 pgd =
c0004000
[
00000028] *pgd=
00000000
Internal error: Oops: 5 [#1]
last sysfs file:
Modules linked in:
CPU: 0 Not tainted
(2.6.36-rc7-next-
20101014-linux-next-
20101012+ #40) PC is at
init_IRQ+0x14/0x48 LR is at start_kernel+0x150/0x2c0
[...]
We seem to be using desc->status without assigning desc to
anything. Fix this by adding back the code that was originally
there.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
LKML-Reference: <
1287077397-21781-1-git-send-email-gadiyar@ti.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 12 Oct 2010 19:58:27 +0000 (21:58 +0200)]
genirq: Fix CONFIG_GENIRQ_NO_DEPRECATED=y build
This option can be set to verify the full conversion to the new chip
functions. Fix the fallout of the patch rework, so the core code
compiles and works with it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 6 Oct 2010 14:28:51 +0000 (16:28 +0200)]
x86: Switch sparse_irq allocations to GFP_KERNEL
No callers from atomic context (except boot) anymore.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 5 Oct 2010 13:14:35 +0000 (15:14 +0200)]
genirq: Switch sparse_irq allocator to GFP_KERNEL
The allocator functions are now called outside of preempt disabled
regions. Switch to GFP_KERNEL.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 8 Oct 2010 10:47:53 +0000 (12:47 +0200)]
genirq: Make sparse_lock a mutex
No callers from atomic regions.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Thu, 30 Sep 2010 10:19:03 +0000 (12:19 +0200)]
x86: lguest: Use new irq allocator
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Thomas Gleixner [Wed, 29 Sep 2010 15:18:47 +0000 (17:18 +0200)]
genirq: Remove the now unused sparse irq leftovers
The move_irq_desc() function was only used due to the problem that the
allocator did not free the old descriptors. So the descriptors had to
be moved in create_irq_nr(). That's history.
The code would have never been able to move active interrupt
descriptors on affinity settings. That can be done in a completely
different way w/o all this horror.
Remove all of it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 29 Sep 2010 16:46:55 +0000 (18:46 +0200)]
genirq: Sanitize dynamic irq handling
Use the cleanup functions of the dynamic allocator. No need to have
separate implementations.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 29 Sep 2010 16:44:23 +0000 (18:44 +0200)]
genirq: Remove arch_init_chip_data()
This function should have not been there in the first place.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 29 Sep 2010 15:37:10 +0000 (17:37 +0200)]
x86: xen: Sanitise sparse_irq handling
There seems to be more cleanups possible, but that's left to the xen
experts :)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Thomas Gleixner [Thu, 30 Sep 2010 09:26:43 +0000 (11:26 +0200)]
x86: Use sane enumeration
Instead of looping through all interrupts, use the bitmap lookup to
find the next.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Thu, 30 Sep 2010 09:43:08 +0000 (11:43 +0200)]
x86: uv: Clean up the direct access to irq_desc
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Oct 2010 19:08:56 +0000 (21:08 +0200)]
x86: Make io_apic.c local functions static
No users outside of io_apic.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 11 Oct 2010 10:21:18 +0000 (12:21 +0200)]
genirq: Remove irq_2_iommu
irq_2_iommu is now in the x86 code where it belongs. Remove all
leftovers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Mon, 11 Oct 2010 09:55:37 +0000 (11:55 +0200)]
x86: Speed up the irq_remapped check in hot pathes
irq_2_iommu is in struct irq_cfg, so we can do the irq_remapped check
based on irq_cfg instead of going through a lookup function. That's
especially interesting in the eoi_ioapic_irq() hotpath.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Sun, 10 Oct 2010 10:34:27 +0000 (12:34 +0200)]
intr_remap: Simplify the code further
Having irq_2_iommu in struct irq_cfg allows further simplifications.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Sun, 10 Oct 2010 10:29:27 +0000 (12:29 +0200)]
intr_remap: Use irq_2_iommu in struct irq_cfg
Switch the intr_remapping code to use the irq_2_iommu struct in
irg_cfg.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Sun, 10 Oct 2010 09:39:09 +0000 (11:39 +0200)]
x86: Embedd irq_2_iommu into irq_cfg
That interrupt remapping code is x86 specific and tied to the io_apic
code. No need for separate allocator functions in the interrupt
remapping code. This allows to simplify the code and irq_2_iommu is
small (13 bytes on 64bit) so it's not a real problem even if interrupt
remapping is runtime disabled. If it's compile time disabled the
impact is zero.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Mon, 4 Oct 2010 16:41:37 +0000 (18:41 +0200)]
pci: intr_remap: Remove unused functions
No users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Mon, 4 Oct 2010 14:51:27 +0000 (16:51 +0200)]
pci: intr_remap: Use irq_data
No need to dereference irq_desc.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Mon, 4 Oct 2010 14:20:16 +0000 (16:20 +0200)]
pci: intr-remap: Free irte memory if SPARSE_IRQ=y
With SPARSE_IRQ=y the irte descriptors are dynamically allocated, but not
freed in free_irte().
That was ok as long as the sparse irq core was not freeing irq descriptors on
destroy_irq(). Now we leak the irte descriptor. Free it in free_irte().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Fri, 8 Oct 2010 08:40:53 +0000 (10:40 +0200)]
x86: io_apic: Remove the now unused sparse_irq arch_* functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 18:34:53 +0000 (20:34 +0200)]
x86: ioapic: Cleanup sparse irq code
Switch over to the new allocator and remove all the magic which was
caused by the unability to destroy irq descriptors. Get rid of the
create_irq_nr() loop for sparse and non sparse irq.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Yinghai Lu [Sat, 9 Oct 2010 05:44:02 +0000 (22:44 -0700)]
x86: Don't setup ioapic irq for sci twice
The sparseirq rework triggered a warning in the iommu code, which was
caused by setting up ioapic for ACPI irq 9 twice. This function is
solely to handle interrupts which are on a secondary ioapic and
outside the legacy irq range.
Replace the sparse irq_to_desc check with a non ifdeffed version.
[ tglx: Moved it before the ioapic sparse conversion and simplified
the inverse logic ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <
4CB00122.
3030301@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 8 Oct 2010 08:44:21 +0000 (10:44 +0200)]
x86: io_apic: Prepare alloc/free_irq_cfg()
Rename the grossly misnamed get_one_free_irq_cfg() to alloc_irq_cfg().
Add a (not yet used) irq number argument to free_irq_cfg()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 6 Oct 2010 20:14:21 +0000 (22:14 +0200)]
x86: Implement new allocator functions
Implement new allocator functions which make use of the core changes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 6 Oct 2010 20:07:03 +0000 (22:07 +0200)]
x86: ioapic: Cleanup get_one_free_irq_cfg()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 21:31:50 +0000 (23:31 +0200)]
x86: ioapic: Cleanup some more
Cleanup after the irq_chip conversion a bit.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 8 Oct 2010 20:31:46 +0000 (22:31 +0200)]
x86: Convert ht set_affinity to new chip function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Fri, 8 Oct 2010 20:21:26 +0000 (22:21 +0200)]
x86: Cleanup hpet affinity setting
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 8 Oct 2010 20:19:29 +0000 (22:19 +0200)]
x86: Convert dmar affinity setting to new chip function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: David Woodhouse <dwmw2@infradead.org>
Thomas Gleixner [Fri, 8 Oct 2010 20:15:49 +0000 (22:15 +0200)]
x86: Convert remapped msi to new chip.irq_set_affinity function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Fri, 8 Oct 2010 19:50:22 +0000 (21:50 +0200)]
x86: Convert remapped ioapic affinity setting to new irq chip function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Thomas Gleixner [Fri, 8 Oct 2010 19:49:03 +0000 (21:49 +0200)]
x86: Convert msi affinity setting to new chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Fri, 8 Oct 2010 19:40:23 +0000 (21:40 +0200)]
x86: Prepare the affinity common functions for taking struct irq_data *
While at it rename it to sensible function names and fix the return
value from unsigned to int for __ioapic_set_affinity (set_desc_affinity).
Returning -1 in a function returning unsigned int is somewhat strange.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 15:28:38 +0000 (17:28 +0200)]
x86: ioapic: Clean up the direct access to irq_desc
Most of it is useless pseudo optimization.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 15:22:09 +0000 (17:22 +0200)]
ht: Convert to new irq_chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Tue, 28 Sep 2010 15:15:11 +0000 (17:15 +0200)]
dmar: Convert to new irq chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Thomas Gleixner [Tue, 28 Sep 2010 14:18:39 +0000 (16:18 +0200)]
x86: ioapic/hpet: Convert to new chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 14:03:54 +0000 (16:03 +0200)]
x86: ioapic: Convert mask to new irq_chip function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 14:00:34 +0000 (16:00 +0200)]
x86: io_apic: Convert startup to new irq_chip function
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 13:18:35 +0000 (15:18 +0200)]
x86: Cleanup io_apic
Sanitize functions. Remove irq_desc pointer magic.
Preparatory patch for further cleanups.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 24 Sep 2010 10:26:18 +0000 (12:26 +0200)]
x86: Cleanup access to irq_data
Fixup the open coded access to
irq_desc->[handler_data|chip_data|msi-desc]
Use the macros and inline functions for it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 13:01:33 +0000 (15:01 +0200)]
x86: i8259: Convert to new irq_chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 12:59:58 +0000 (14:59 +0200)]
x86: Cleanup visws interrupt handling
Remove the open coded access to irq_desc and convert to the new irq
chip functions. Change the mask function of piix4_virtual_irq_type so
we can use the generic irq handling function for the virtual interrupt
instead of open coding it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 12:57:24 +0000 (14:57 +0200)]
x86: lguest: Convert to new irq chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Thomas Gleixner [Tue, 28 Sep 2010 09:11:10 +0000 (11:11 +0200)]
x86: Sanitize apb timer interrupt handling
Disable the interrupt in CPU_DEAD where it belongs. Remove the
open coded irq_desc manipulation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Thomas Gleixner [Fri, 8 Oct 2010 18:24:58 +0000 (20:24 +0200)]
x86: Convert irq_chip access to new functions
Before moving the irq chips to the new functions, fixup direct callers.
The cpu offline irq fixup code needs to become generic and archs need
to honour the "force" flag as an indicator, but that's for later.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 22:15:31 +0000 (00:15 +0200)]
x86: Remove useless reinitialization of irq descriptors
The descriptors are already initialized in exactly this way.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 17:09:51 +0000 (19:09 +0200)]
pci: Cleanup the irq_desc mess in msi
Handing down irq_desc to msi just so that msi can access
irq_desc.irq_data.msi_desc is a pretty stupid idea. The calling code
can hand down a pointer to msi_desc so msi code does not need to know
about the irq descriptor at all.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Thomas Gleixner [Tue, 28 Sep 2010 14:46:51 +0000 (16:46 +0200)]
pci: Convert msi to new irq_chip functions
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Thomas Gleixner [Tue, 12 Oct 2010 14:41:22 +0000 (16:41 +0200)]
Merge branch 'x86/urgent' of into irq/sparseirq
Reason: Pull in the latest io_apic bugfixes
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Tue, 12 Oct 2010 14:40:34 +0000 (16:40 +0200)]
Merge branch 'x86/cleanups' into irq/sparseirq
Reason: Avoid conflicts with removal of boot_cpu_id
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Tue, 12 Oct 2010 14:39:44 +0000 (16:39 +0200)]
Merge branch 'x86/x2apic' into irq/sparseirq
Reason: Avoid conflicts with the x2apic modifications
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Mon, 27 Sep 2010 18:55:03 +0000 (20:55 +0200)]
genirq: Query arch for number of early descriptors
sparse irq sets up NR_IRQS_LEGACY irq descriptors and archs then go
ahead and allocate more.
Use the unused return value of arch_probe_nr_irqs() to let the
architecture return the number of early allocations. Fix up all users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 18:02:56 +0000 (20:02 +0200)]
genirq: Use sane sparse allocator
Make irq_to_desc_alloc_node() a wrapper around the new allocator.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Thu, 30 Sep 2010 18:33:11 +0000 (20:33 +0200)]
genirq-update-kerneldoc.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 12 Oct 2010 10:31:46 +0000 (12:31 +0200)]
genirq: Implement irq reservation
Mark a range of interrupts as allocated. In the SPARSE_IRQ=n case we
need this to update the bitmap for the legacy irqs so the enumerator
via irq_get_next_irq() works.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Thu, 30 Sep 2010 08:45:07 +0000 (10:45 +0200)]
genirq: Implement sane enumeration
Use the allocator bitmap to lookup active interrupts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Thu, 30 Sep 2010 00:46:07 +0000 (02:46 +0200)]
genirq: Prepare proc for real sparse irq support
/proc/irq never removes any entries, but when irq descriptors can be
freed for real this is necessary. Otherwise we'd reference a freed
descriptor in /proc/irq/N
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 15:48:26 +0000 (17:48 +0200)]
genirq: Implement a sane sparse_irq allocator
The current sparse_irq allocator has several short comings due to
failures in the design or the lack of it:
- Requires iteration over the number of active irqs to find a free slot
(Some architectures have grown their own workarounds for this)
- Removal of entries is not possible
- Racy between create_irq_nr and destroy_irq (plugged by horrible
callbacks)
- Migration of active irq descriptors is not possible
- No bulk allocation of irq ranges
- Sprinkeled irq_desc references all over the place outside of kernel/irq/
(The previous chip functions series is addressing this issue)
Implement a sane allocator which fixes the above short comings (though
migration of active descriptors needs a full tree wide cleanup of the
direct and mostly unlocked access to irq_desc).
The new allocator still uses a radix_tree, but uses a bitmap for
keeping track of allocated irq numbers. That allows:
- Fast lookup of a free slot
- Allows the removal of descriptors
- Prevents the create/destroy race
- Bulk allocation of consecutive irq ranges
- Basic design is ready for migration of life descriptors after
further cleanups
The bitmap is also used in the SPARSE_IRQ=n case for lookup and
raceless (de)allocation of irq numbers. So it removes the requirement
for looping through the descriptor array to find slots.
Right now it uses sparse_irq_lock to protect the bitmap and the radix
tree, but after cleaning up all users we should be able convert that
to a mutex and to switch the radix_tree and decriptor allocations to
GFP_KERNEL.
[ Folded in a bugfix from Yinghai Lu ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 19:01:37 +0000 (21:01 +0200)]
genirq: Provide default irq init flags
Arch code sets it's own irq_desc.status flags right after boot and for
dynamically allocated interrupts. That might involve iterating over a
huge array.
Allow ARCH_IRQ_INIT_FLAGS to set separate flags aside of IRQ_DISABLED
which is the default.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 15:45:49 +0000 (17:45 +0200)]
genirq: Remove export of kstat_irqs_cpu
The statistics accessor is only used by proc/stats and
show_interrupts(). Both are compiled in.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 29 Sep 2010 20:16:36 +0000 (22:16 +0200)]
isdn: hisax: Replace the bogus access to irq stats
Abusing irq stats in a driver for counting interrupts is a horrible
idea and not safe with shared interrupts. Replace it by a local
interrupt counter.
Noticed by the attempt to remove the irq stats export.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 22 Sep 2010 13:58:45 +0000 (15:58 +0200)]
genirq: Remove early_init_irq_lock_class()
early_init_irq_lock_class() is called way before anything touches the
irq descriptors. In case of SPARSE_IRQ=y this is a NOP operation
because the radix tree is empty at this point. For the SPARSE_IRQ=n
case it's sufficient to set the lock class in early_init_irq().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Wed, 22 Sep 2010 15:09:43 +0000 (17:09 +0200)]
genirq: Distangle kernel/irq/handle.c
kernel/irq/handle.c has become a dumpground for random code in random
order. Split out the irq descriptor management and the dummy irq_chip
implementation into separate files. Cleanup the include maze while at
it.
No code change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 15:34:01 +0000 (17:34 +0200)]
genirq: Sanitize irq_data accessors
Get the data structure from the core and provide inline wrappers to
access the irq_data members.
Provide accessor inlines for irq_data as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Tue, 28 Sep 2010 08:40:18 +0000 (10:40 +0200)]
genirq: Provide status modifier
Provide a irq_desc.status modifier function to cleanup the direct
access to irq_desc in arch and driver code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 4 Oct 2010 11:47:12 +0000 (13:47 +0200)]
genirq: Remove unsused inline
move_irq() has no users. Remove it and simplify the ifdef forrest while at it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 1 Oct 2010 14:03:45 +0000 (16:03 +0200)]
genirq: Distangle irq.h
Move irq_desc and internal functions out of irq.h
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Fri, 8 Oct 2010 13:33:01 +0000 (15:33 +0200)]
mfd: twl4030: Fix dummy irq chip usage
The twl irqchip uses the dummy irq chip ack functions, which is NULL
now. Switch it over to use irq_ack.
Reported-and-tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Fri, 1 Oct 2010 13:17:14 +0000 (15:17 +0200)]
genirq: Provide config option to disable deprecated code
This option covers now the old chip functions and the irq_desc data
fields which are moving to struct irq_data. More stuff will follow.
Pretty handy for testing a conversion, whether something broke or not.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:53 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->retrigger()
Wrap the old chip function retrigger() until the migration is complete
and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121843.
025801092@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:50 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->set_wake()
Wrap the old chip function set_wake() until the migration is complete
and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
927527393@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:47 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->set_type()
Wrap the old chip function set_type() until the migration is complete
and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
832261548@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:41 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->set_affinity()
Wrap the old chip function set_affinity() until the migration is
complete and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
732894108@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:38 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->startup()
Wrap the old chip function startup() until the migration is complete and
the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
635152961@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:45:02 +0000 (12:45 +0000)]
genirq: Provide compat handling for chip->disable()/shutdown()
Wrap the old chip functions disable() and shutdown() until the
migration is complete and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
532070631@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:44:56 +0000 (12:44 +0000)]
genirq: Provide compat handling for chip->enable()
Wrap the old chip function enable() until the migration is complete and
the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
437159182@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:44:53 +0000 (12:44 +0000)]
genirq: Provide compat handling for chip->eoi()
Wrap the old chip function eoi() until the migration is complete and
the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
339657617@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:44:50 +0000 (12:44 +0000)]
genirq: Provide compat handling for chip->mask_ack()
Wrap the old chip function mask_ack() until the migration is complete
and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
240806983@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:44:47 +0000 (12:44 +0000)]
genirq: Provide compat handling for chip->ack()
Wrap the old chip function ack() until the migration is complete and
the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
142624725@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Thomas Gleixner [Mon, 27 Sep 2010 12:44:44 +0000 (12:44 +0000)]
genirq: Provide compat handling for chip->unmask()
Wrap the old chip function unmask() until the migration is complete
and the old chip functions are removed.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <
20100927121842.
043608928@linutronix.de>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
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