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  1. 29 1月, 2009 2 次提交
    • I
      x86, genapic: rename int_delivery_mode, et. al. · f8987a10
      由 Ingo Molnar 提交于 
      int_delivery_mode is supposed to mean 'interrupt delivery mode', but
it's quite a misnomer as 'int' we usually think of as an integer type ...

The standard naming for such attributes is 'irq' - so rename the following
fields and macros:

 int_delivery_mode => irq_delivery_mode
 INT_DELIVERY_MODE => IRQ_DELIVERY_MODE
 int_dest_mode     => irq_dest_mode
 INT_DEST_MODE     => IRQ_DEST_MODE
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      f8987a10
    • I
      x86: rename 'genapic' to 'apic' · c8d46cf0
      由 Ingo Molnar 提交于 
      Rename genapic-> to apic-> references because in a future chagne we'll
open-code all the indirect calls (instead of obscuring them via macros),
so we want this reference to be as short as possible.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      c8d46cf0
  3. 21 1月, 2009 1 次提交
  5. 19 1月, 2009 1 次提交
    • M
      x86: Remove never-called arch_setup_msi_irq() · 422e79a8
      由 Michael Ellerman 提交于 
      Since commit 75c46fa6, "x64, x2apic/intr-remap: MSI and MSI-X
support for interrupt remapping infrastructure", x86 has had an
implementation of arch_setup_msi_irqs().

That implementation does not call arch_setup_msi_irq(), instead it calls
setup_irq(). No other x86 code calls arch_setup_msi_irq().

That leaves only arch_setup_msi_irqs() in drivers/pci/msi.c, but that
routine is overridden by the x86 version of arch_setup_msi_irqs().

So arch_setup_msi_irq() is dead code, remove it.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
      422e79a8
  7. 15 1月, 2009 1 次提交
  9. 14 1月, 2009 2 次提交
  11. 13 1月, 2009 1 次提交
  13. 12 1月, 2009 2 次提交
    • M
      irq: change references from NR_IRQS to nr_irqs · 9594949b
      由 Mike Travis 提交于 
      Impact: preparation, cleanup, add KERN_INFO printk

Modify references from NR_IRQS to nr_irqs as the later will become
variable-sized based on nr_cpu_ids when CONFIG_SPARSE_IRQS=y.
Signed-off-by: NMike Travis <travis@sgi.com>
      9594949b
    • M
      cpumask: update irq_desc to use cpumask_var_t · 7f7ace0c
      由 Mike Travis 提交于 
      Impact: reduce memory usage, use new cpumask API.

Replace the affinity and pending_masks with cpumask_var_t's.  This adds
to the significant size reduction done with the SPARSE_IRQS changes.

The added functions (init_alloc_desc_masks & init_copy_desc_masks) are
in the include file so they can be inlined (and optimized out for the
!CONFIG_CPUMASKS_OFFSTACK case.)  [Naming chosen to be consistent with
the other init*irq functions, as well as the backwards arg declaration
of "from, to" instead of the more common "to, from" standard.]

Includes a slight change to the declaration of struct irq_desc to embed
the pending_mask within ifdef(CONFIG_SMP) to be consistent with other
references, and some small changes to Xen.

Tested: sparse/non-sparse/cpumask_offstack/non-cpumask_offstack/nonuma/nosmp on x86_64
Signed-off-by: NMike Travis <travis@sgi.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: virtualization@lists.osdl.org
Cc: xen-devel@lists.xensource.com
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
      7f7ace0c
  15. 08 1月, 2009 1 次提交
  17. 04 1月, 2009 1 次提交
  19. 03 1月, 2009 1 次提交
  21. 30 12月, 2008 1 次提交
  23. 27 12月, 2008 1 次提交
  25. 26 12月, 2008 1 次提交
  27. 24 12月, 2008 1 次提交
    • Y
      x86: fix lguest used_vectors breakage, -v2 · b77b881f
      由 Yinghai Lu 提交于 
      Impact: fix lguest, clean up

32-bit lguest used used_vectors to record vectors, but that model of
allocating vectors changed and got broken, after we changed vector
allocation to a per_cpu array.

Try enable that for 64bit, and the array is used for all vectors that
are not managed by vector_irq per_cpu array.

Also kill system_vectors[], that is now a duplication of the
used_vectors bitmap.

[ merged in cpus4096 due to io_apic.c cpumask changes. ]
[ -v2, fix build failure ]
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      b77b881f
  29. 20 12月, 2008 1 次提交
  31. 19 12月, 2008 1 次提交
    • I
      x86: fix warning in arch/x86/kernel/io_apic.c · a7883dec
      由 Ingo Molnar 提交于 
      this warning:

  arch/x86/kernel/io_apic.c: In function ‘ir_set_msi_irq_affinity’:
  arch/x86/kernel/io_apic.c:3373: warning: ‘cfg’ may be used uninitialized in this function

triggers because the variable was truly uninitialized. We'd crash on
entering this code.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      a7883dec
  33. 17 12月, 2008 5 次提交
    • I
      x86: update io_apic.c to the new cpumask code · d733e00d
      由 Ingo Molnar 提交于 
      Impact: build fix

The sparseirq tree crossed with the cpumask changes, fix the fallout.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      d733e00d
    • M
      x86: Update io_apic.c to use new cpumask API · 22f65d31
      由 Mike Travis 提交于 
      Impact: cleanup, consolidate patches, use new API

Consolidate the following into a single patch to adapt to new
sparseirq code in arch/x86/kernel/io_apic.c, add allocation of
cpumask_var_t's in domain and old_domain, and reduce further
merge conflicts.  Only one file (arch/x86/kernel/io_apic.c) is
changed in all of these patches.

	0006-x86-io_apic-change-irq_cfg-domain-old_domain-to.patch
	0007-x86-io_apic-set_desc_affinity.patch
	0008-x86-io_apic-send_cleanup_vector.patch
	0009-x86-io_apic-eliminate-remaining-cpumask_ts-from-st.patch
	0021-x86-final-cleanups-in-io_apic-to-use-new-cpumask-AP.patch
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NMike Travis <travis@sgi.com>
      22f65d31
    • M
      x86 smp: modify send_IPI_mask interface to accept cpumask_t pointers · e7986739
      由 Mike Travis 提交于 
      Impact: cleanup, change parameter passing

  * Change genapic interfaces to accept cpumask_t pointers where possible.

  * Modify external callers to use cpumask_t pointers in function calls.

  * Create new send_IPI_mask_allbutself which is the same as the
    send_IPI_mask functions but removes smp_processor_id() from list.
    This removes another common need for a temporary cpumask_t variable.

  * Functions that used a temp cpumask_t variable for:

	cpumask_t allbutme = cpu_online_map;

	cpu_clear(smp_processor_id(), allbutme);
	if (!cpus_empty(allbutme))
		...

    become:

	if (!cpus_equal(cpu_online_map, cpumask_of_cpu(cpu)))
		...

  * Other minor code optimizations (like using cpus_clear instead of
    CPU_MASK_NONE, etc.)

Applies to linux-2.6.tip/master.
Signed-off-by: NMike Travis <travis@sgi.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NIngo Molnar <mingo@elte.hu>
      e7986739
    • Y
      x86, sparseirq: move irq_desc according to smp_affinity, v7 · 48a1b10a
      由 Yinghai Lu 提交于 
      Impact: improve NUMA handling by migrating irq_desc on smp_affinity changes

if CONFIG_NUMA_MIGRATE_IRQ_DESC is set:

-  make irq_desc to go with affinity aka irq_desc moving etc
-  call move_irq_desc in irq_complete_move()
-  legacy irq_desc is not moved, because they are allocated via static array

for logical apic mode, need to add move_desc_in_progress_in_same_domain,
otherwise it will not be moved ==> also could need two phases to get
irq_desc moved.
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      48a1b10a
    • M
      x86: fix build error with post-merge of tip/cpus4096 and rr-for-ingo/master. · c8cae544
      由 Mike Travis 提交于 
      Ingo Molnar wrote:

> allyes64 build failure:
>
> arch/x86/kernel/io_apic.c: In function ‘set_ir_ioapic_affinity_irq_desc’:
> arch/x86/kernel/io_apic.c:2295: error: incompatible type for argument 2 of
> ‘migrate_ioapic_irq_desc’
> arch/x86/kernel/io_apic.c: In function ‘ir_set_msi_irq_affinity’:
> arch/x86/kernel/io_apic.c:3205: error: incompatible type for argument 2 of
> ‘set_extra_move_desc’
> make[1]: *** wait: No child processes.  Stop.

Here's a small patch to correct the build error with the post-merge tree.
Built and boot-tested.  I'll will reset the follow on patches in my brand
new git tree to accommodate this change.

Fix two references in io_apic.c that were incorrect.
Signed-off-by: NMike Travis <travis@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      c8cae544
  35. 13 12月, 2008 1 次提交
  37. 12 12月, 2008 1 次提交
  39. 08 12月, 2008 4 次提交
  41. 23 11月, 2008 1 次提交
  43. 21 11月, 2008 1 次提交
    • M
      x86: Fix interrupt leak due to migration · 0ca4b6b0
      由 Matthew Wilcox 提交于 
      When we migrate an interrupt from one CPU to another, we set the
move_in_progress flag and clean up the vectors later once they're not
being used.  If you're unlucky and call destroy_irq() before the vectors
become un-used, the move_in_progress flag is never cleared, which causes
the interrupt to become unusable.

This was discovered by Jesse Brandeburg for whom it manifested as an
MSI-X device refusing to use MSI-X mode when the driver was unloaded
and reloaded repeatedly.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0ca4b6b0
  45. 10 11月, 2008 1 次提交
  47. 06 11月, 2008 1 次提交
    • B
      x86: don't allow nr_irqs > NR_IRQS · c78d0cf2
      由 Ben Hutchings 提交于 
      Impact: fix boot hang on 32-bit systems with more than 224 IO-APIC pins

On some 32-bit systems with a lot of IO-APICs probe_nr_irqs() can
return a value larger than NR_IRQS. This will lead to probe_irq_on()
overrunning the irq_desc array.

I hit this when running net-next-2.6 (close to 2.6.28-rc3) on a
Supermicro dual Xeon system.  NR_IRQS is 224 but probe_nr_irqs() detects
5 IOAPICs and returns 240.  Here are the log messages:

Tue Nov  4 16:53:47 2008 ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
Tue Nov  4 16:53:47 2008 IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
Tue Nov  4 16:53:47 2008 ACPI: IOAPIC (id[0x02] address[0xfec81000] gsi_base[24])
Tue Nov  4 16:53:47 2008 IOAPIC[1]: apic_id 2, version 32, address 0xfec81000, GSI 24-47
Tue Nov  4 16:53:47 2008 ACPI: IOAPIC (id[0x03] address[0xfec81400] gsi_base[48])
Tue Nov  4 16:53:47 2008 IOAPIC[2]: apic_id 3, version 32, address 0xfec81400, GSI 48-71
Tue Nov  4 16:53:47 2008 ACPI: IOAPIC (id[0x04] address[0xfec82000] gsi_base[72])
Tue Nov  4 16:53:47 2008 IOAPIC[3]: apic_id 4, version 32, address 0xfec82000, GSI 72-95
Tue Nov  4 16:53:47 2008 ACPI: IOAPIC (id[0x05] address[0xfec82400] gsi_base[96])
Tue Nov  4 16:53:47 2008 IOAPIC[4]: apic_id 5, version 32, address 0xfec82400, GSI 96-119
Tue Nov  4 16:53:47 2008 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
Tue Nov  4 16:53:47 2008 ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
Tue Nov  4 16:53:47 2008 Enabling APIC mode:  Flat.  Using 5 I/O APICs
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Acked-by: NYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      c78d0cf2
  49. 16 10月, 2008 6 次提交