| Commit message (Collapse) | Author | Age |
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits)
cpumask: remove cpumask allocation from idle_balance, fix
numa, cpumask: move numa_node_id default implementation to topology.h, fix
cpumask: remove cpumask allocation from idle_balance
x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus
x86: cpumask: update 32-bit APM not to mug current->cpus_allowed
x86: microcode: cleanup
x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c
cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash
numa, cpumask: move numa_node_id default implementation to topology.h
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
cpumask: remove x86 cpumask_t uses.
cpumask: use cpumask_var_t in uv_flush_tlb_others.
cpumask: remove cpumask_t assignment from vector_allocation_domain()
cpumask: make Xen use the new operators.
cpumask: clean up summit's send_IPI functions
cpumask: use new cpumask functions throughout x86
x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask
cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
x86: unify 32 and 64-bit node_to_cpumask_map
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
Conflicts:
arch/x86/include/asm/topology.h
drivers/oprofile/buffer_sync.c
(Both cases: changed in Linus' tree, removed in Ingo's).
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Conflicts:
arch/x86/kernel/cpu/common.c
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Impact: build fix for powerpc and sparc
Today's linux-next build (powerpc allyesconfig) failed like this:
> In file included from include/linux/mmzone.h:776,
> from include/linux/gfp.h:5,
> from include/linux/kmod.h:23,
> from include/linux/module.h:14,
> from init/version.c:11:
> arch/powerpc/include/asm/mmzone.h:32: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'numa_cpumask_lookup_table'
Caused by commit 082edb7bf443eb8eda15b482d16ad9dd8137ad24 ("numa,
cpumask: move numa_node_id default implementation to topology.h") from
the cpus4096 tree which removed the include of linux/topology.h from
linux/mmzone.h.
Same for sparc64 defconfig.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-b: Rusty Russell <rusty@rustcorp.com.au>
Cc: ppc-dev <linuxppc-dev@ozlabs.org>
LKML-Reference: <20090319220322.3baa4613.sfr@canb.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
trivial: Update my email address
trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
trivial: Fix misspelling of "Celsius".
trivial: remove unused variable 'path' in alloc_file()
trivial: fix a pdlfush -> pdflush typo in comment
trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
trivial: wusb: Storage class should be before const qualifier
trivial: drivers/char/bsr.c: Storage class should be before const qualifier
trivial: h8300: Storage class should be before const qualifier
trivial: fix where cgroup documentation is not correctly referred to
trivial: Give the right path in Documentation example
trivial: MTD: remove EOL from MODULE_DESCRIPTION
trivial: Fix typo in bio_split()'s documentation
trivial: PWM: fix of #endif comment
trivial: fix typos/grammar errors in Kconfig texts
trivial: Fix misspelling of firmware
trivial: cgroups: documentation typo and spelling corrections
trivial: Update contact info for Jochen Hein
trivial: fix typo "resgister" -> "register"
...
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Fix misspelling of firmware.
Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Pass the original flags to rwlock arch-code, so that it can re-enable
interrupts if implemented for that architecture.
Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs
which just do the same thing as non-flags variants.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <linux-arch@vger.kernel.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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First argument unused since 2.3.11.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes a build failure with generic debug pagealloc:
mm/debug-pagealloc.c: In function 'set_page_poison':
mm/debug-pagealloc.c:8: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'clear_page_poison':
mm/debug-pagealloc.c:13: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: In function 'page_poison':
mm/debug-pagealloc.c:18: error: 'struct page' has no member named 'debug_flags'
mm/debug-pagealloc.c: At top level:
mm/debug-pagealloc.c:120: error: redefinition of 'kernel_map_pages'
include/linux/mm.h:1278: error: previous definition of 'kernel_map_pages' was here
mm/debug-pagealloc.c: In function 'kernel_map_pages':
mm/debug-pagealloc.c:122: error: 'debug_pagealloc_enabled' undeclared (first use in this function)
by fixing
- debug_flags should be in struct page
- define DEBUG_PAGEALLOC config option for all architectures
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use debug_kmap_atomic in kmap_atomic, kmap_atomic_pfn, and
iomap_atomic_prot_pfn.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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CONFIG_DEBUG_PAGEALLOC is now supported by x86, powerpc, sparc64, and
s390. This patch implements it for the rest of the architectures by
filling the pages with poison byte patterns after free_pages() and
verifying the poison patterns before alloc_pages().
This generic one cannot detect invalid page accesses immediately but
invalid read access may cause invalid dereference by poisoned memory and
invalid write access can be detected after a long delay.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Fix reset hangs on Niagara systems.
cpumask: use mm_cpumask() wrapper: sparc
cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: sparc
cpumask: remove the now-obsoleted pcibus_to_cpumask(): sparc
cpumask: remove cpu_coregroup_map: sparc
cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc
cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc64
cpumask: Use accessors code.: sparc64
cpumask: Use accessors code: sparc
cpumask: arch_send_call_function_ipi_mask: sparc
cpumask: Use smp_call_function_many(): sparc64
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ssh://master.kernel.org/home/ftp/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask-for-sparc
Conflicts:
arch/sparc/kernel/smp_64.c
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Makes code futureproof against the impending change to mm->cpu_vm_mask.
It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Impact: cleanup
(Thanks to Al Viro for reminding me of this, via Ingo)
CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so:
#define CPU_MASK_ALL (cpumask_t) { { ... } }
Taking the address of such a temporary is questionable at best,
unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added
CPU_MASK_ALL_PTR:
#define CPU_MASK_ALL_PTR (&CPU_MASK_ALL)
Which formalizes this practice. One day gcc could bite us over this
usage (though we seem to have gotten away with it so far).
So replace everywhere which used &CPU_MASK_ALL or CPU_MASK_ALL_PTR
with the modern "cpu_all_mask" (a real struct cpumask *), and remove
CPU_MASK_ALL_PTR altogether.
Also remove the confusing and deprecated large-NR_CPUS-only
"cpu_mask_all".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Mike Travis <travis@sgi.com>
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Impact: reduce stack usage for large NR_CPUS
cpumask_of_pcibus() is the new version.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Impact: cleanup
cpu_coregroup_mask is the New Hotness.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Impact: cleanup, futureproof
In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids. So use that instead of NR_CPUS in various
places.
This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
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sparc64
Impact: cleanup, futureproof
In fact, all cpumask ops will only be valid (in general) for bit
numbers < nr_cpu_ids. So use that instead of NR_CPUS in various
places.
This is always safe: no cpu number can be >= nr_cpu_ids, and
nr_cpu_ids is initialized to NR_CPUS at boot.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
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Impact: use new API
Use the accessors rather than frobbing bits directly. Most of this is
in arch code I haven't even compiled, but is straightforward.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
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Impact: use new API
Use the accessors rather than frobbing bits directly. Most of this is
in arch code I haven't even compiled, but it is mostly straightforward.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
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We're weaning the core code off handing cpumask's around on-stack.
This introduces arch_send_call_function_ipi_mask(), and by defining
it, the old arch_send_call_function_ipi is defined by the core code.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Impact: Use new API
Change smp_call_function_mask() callers to smp_call_function_many().
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
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Hypervisor versions older than version 1.6.1 cannot handle
leaving the profile counter overflow interrupt chirping
when the system does a soft reset.
So use a reboot notifier to shut off the NMI watchdog.
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask:
oprofile: Thou shalt not call __exit functions from __init functions
cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic
cpumask: remove cpumask_t from core
cpumask: convert rcutorture.c
cpumask: use new cpumask_ functions in core code.
cpumask: remove references to struct irqaction's mask field.
cpumask: use mm_cpumask() wrapper: kernel/fork.c
cpumask: use set_cpu_active in init/main.c
cpumask: remove node_to_first_cpu
cpumask: fix seq_bitmap_*() functions.
cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL
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Impact: cleanup
It's unused, since about 1995. So remove all initialization of it in
preparation for actually removing the field.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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Everyone defines it, and only one person uses it
(arch/mips/sgi-ip27/ip27-nmi.c). So just open code it there.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-mips@linux-mips.org
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Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.
We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.
But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.
->read_proc/->write_proc were just fixed to not require ->owner for
protection.
rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.
Removing ->owner will also make PDE smaller.
So, let's nuke it.
Kudos to Jeff Layton for reminding about this, let's say, oversight.
http://bugzilla.kernel.org/show_bug.cgi?id=12454
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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Conflicts:
arch/sparc/kernel/time_64.c
drivers/gpu/drm/drm_proc.c
Manual merge to resolve build warning due to phys_addr_t type change
on x86:
drivers/gpu/drm/drm_info.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Sparc was missed in commit 2b1c6bd77d4e6a727ffac8630cd154b2144b751a
("generic compat_sys_ustat"). We definitely need it, since our
__kernel_ino_t is "unsigned long".
Signed-off-by: David S. Miller <davem@davemloft.net>
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arch/sparc/kernel/time_64.c: In function ‘timer_interrupt’:
arch/sparc/kernel/time_64.c:732: error: ‘struct kernel_stat’ has no member named ‘irqs’
make[1]: *** [arch/sparc/kernel/time_64.o] Error 1
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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As explained by Benjamin Herrenschmidt:
> CPU 0 is running the context, task->mm == task->active_mm == your
> context. The CPU is in userspace happily churning things.
>
> CPU 1 used to run it, not anymore, it's now running fancyfsd which
> is a kernel thread, but current->active_mm still points to that
> same context.
>
> Because there's only one "real" user, mm_users is 1 (but mm_count is
> elevated, it's just that the presence on CPU 1 as active_mm has no
> effect on mm_count().
>
> At this point, fancyfsd decides to invalidate a mapping currently mapped
> by that context, for example because a networked file has changed
> remotely or something like that, using unmap_mapping_ranges().
>
> So CPU 1 goes into the zapping code, which eventually ends up calling
> flush_tlb_pending(). Your test will succeed, as current->active_mm is
> indeed the target mm for the flush, and mm_users is indeed 1. So you
> will -not- send an IPI to the other CPU, and CPU 0 will continue happily
> accessing the pages that should have been unmapped.
To fix this problem, check ->mm instead of ->active_mm, and this
means:
> So if you test current->mm, you effectively account for mm_users == 1,
> so the only way the mm can be active on another processor is as a lazy
> mm for a kernel thread. So your test should work properly as long
> as you don't have a HW that will do speculative TLB reloads into the
> TLB on that other CPU (and even if you do, you flush-on-switch-in should
> get rid of any crap here).
And therefore we should be OK.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
arch/parisc/kernel/irq.c
arch/x86/include/asm/fixmap_64.h
arch/x86/include/asm/setup.h
kernel/irq/handle.c
Semantic merge:
arch/x86/include/asm/fixmap.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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'x86/setup-lzma', 'x86/signal' and 'x86/urgent' into x86/core
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Conflicts:
arch/x86/kernel/acpi/boot.c
arch/x86/mm/fault.c
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Conflicts:
arch/x86/kernel/setup_percpu.c
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Conflicts:
arch/x86/mm/fault.c
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Impact: fix build errors
Since the SPARSE IRQS changes redefined how the kstat irqs are
organized, arch's must use the new accessor function:
kstat_incr_irqs_this_cpu(irq, DESC);
If CONFIG_SPARSE_IRQS is set, then DESC is a pointer to the
irq_desc which has a pointer to the kstat_irqs. If not, then
the .irqs field of struct kernel_stat is used instead.
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup, update to new cpumask API
Irq_desc.affinity and irq_desc.pending_mask are now cpumask_var_t's
so access to them should be using the new cpumask API.
Signed-off-by: Mike Travis <travis@sgi.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (32 commits)
x86: disable __do_IRQ support
sparseirq, powerpc/cell: fix unused variable warning in interrupt.c
genirq: deprecate obsolete typedefs and defines
genirq: deprecate __do_IRQ
genirq: add doc to struct irqaction
genirq: use kzalloc instead of explicit zero initialization
genirq: make irqreturn_t an enum
genirq: remove redundant if condition
genirq: remove unused hw_irq_controller typedef
irq: export remove_irq() and setup_irq() symbols
irq: match remove_irq() args with setup_irq()
irq: add remove_irq() for freeing of setup_irq() irqs
genirq: assert that irq handlers are indeed running in hardirq context
irq: name 'p' variables a bit better
irq: further clean up the free_irq() code flow
irq: refactor and clean up the free_irq() code flow
irq: clean up manage.c
irq: use GFP_KERNEL for action allocation in request_irq()
kernel/irq: fix sparse warning: make symbol static
irq: optimize init_kstat_irqs/init_copy_kstat_irqs
...
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Changeset d7e51e66899f95dabc89b4d4c6674a6e50fa37fc ("sparseirq: make
some func to be used with genirq") broke the build on sparc64:
arch/sparc/kernel/irq_64.c: In function ‘show_interrupts’:
arch/sparc/kernel/irq_64.c:188: error: ‘struct kernel_stat’ has no member named ‘irqs’
make[1]: *** [arch/sparc/kernel/irq_64.o] Error 1
Fix by using the kstat_irqs_cpu() interface.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Changeset d7e51e66899f95dabc89b4d4c6674a6e50fa37fc ("sparseirq: make
some func to be used with genirq") broke the build on sparc64:
arch/sparc/kernel/time_64.c: In function ‘timer_interrupt’:
arch/sparc/kernel/time_64.c:732: error: implicit declaration of function ‘kstat_incr_irqs_this_cpu’
make[1]: *** [arch/sparc/kernel/time_64.o] Error 1
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Flush TLB before releasing pages.
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tlb_flush_mmu() needs to flush pending TLB entries before
processing the mmu_gather ->pages list.
Noticed by Benjamin Herrenschmidt.
Signed-off-by: David S. Miller <davem@davemloft.net>
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