Commit Graph

3615 Commits

Author SHA1 Message Date
Jaswinder Singh Rajput
fe331184a3 x86: time_64.c fix style problems
Impact: cleanup

Fix:

 WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>

total: 0 errors, 1 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:05 +01:00
Jaswinder Singh Rajput
69036c8cc2 x86: time_32.c fix style problems
Impact: cleanup

Fix:

 ERROR: space prohibited after that open parenthesis '('
 ERROR: space prohibited before that close parenthesis ')'

total: 4 errors, 0 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:05 +01:00
Jaswinder Singh Rajput
5f66b2a0d9 x86: irq_64.c fix style problems
Impact: cleanup, fix style problems, more readable

Fix:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 ERROR: code indent should use tabs where possible

 total: 9 errors, 2 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:04 +01:00
Jaswinder Singh Rajput
6a02e71099 x86: irq.c fix style problems
Impact: cleanup

Fix:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>

 total: 0 errors, 1 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:04 +01:00
Jaswinder Singh Rajput
60d53c3058 x86: traps.c fix style problems
Impact: cleanup

Fix:

 WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>
 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/io.h> instead of <asm/io.h>

 total: 0 errors, 3 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:04 +01:00
Jaswinder Singh Rajput
befa9e780d x86: process_32.c fix style problems
Impact: cleanup

Fix:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 WARNING: Use #include <linux/io.h> instead of <asm/io.h>
 WARNING: Use #include <linux/kdebug.h> instead of <asm/kdebug.h>
 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 ERROR: "foo * bar" should be "foo *bar"
 ERROR: trailing whitespace
 ERROR: spaces required around that ':' (ctx:WxO)
 ERROR: spaces required around that ':' (ctx:OxW)

 total: 7 errors, 4 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:03 +01:00
Jaswinder Singh Rajput
e423e33ec1 x86: apic.c fix style problems
Impact: cleanup

Fix:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>
 WARNING: Use #include <linux/timex.h> instead of <asm/timex.h>
 WARNING: line over 80 characters
 ERROR: else should follow close brace '}'

 total: 2 errors, 4 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:03 +01:00
Jaswinder Singh Rajput
b0e239ffad x86: rename mpc_config_oemtable to mpc_oemtable
Impact: cleanup, solve 80 columns wrap problems

mpc_config_oemtable should be renamed to mpc_oemtable.

The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:02 +01:00
Jaswinder Singh Rajput
8fb2952b8a x86: rename mpc_config_lintsrc to mpc_lintsrc
Impact: cleanup, solve 80 columns wrap problems

mpc_config_lintsrc should be renamed to mpc_lintsrc.

The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:02 +01:00
Jaswinder Singh Rajput
540d4e72e1 x86: rename mpc_config_intsrc to mpc_intsrc
Impact: cleanup, solve 80 columns wrap problems

mpc_config_intsrc should be renamed to mpc_intsrc.

The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:01 +01:00
Jaswinder Singh Rajput
2b85b5fb47 x86: rename mpc_config_ioapic to mpc_ioapic
Impact: cleanup, solve 80 columns wrap problems

mpc_config_ioapic should be renamed to mpc_ioapic.

The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:00 +01:00
Jaswinder Singh Rajput
f4f21b716b x86: rename mpc_config_processor to mpc_cpu
Impact: cleanup, solve 80 columns wrap problems

mpc_config_processor should be renamed to mpc_cpu.

The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Plus 'processor' is a lot longer than 'cpu' - so we try to use 'cpu' in all
type names, as much as possible.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:23:00 +01:00
Jaswinder Singh Rajput
00fb8606e5 x86: rename mpc_config_bus to mpc_bus
Impact: cleanup, solve 80 columns wrap problems

mpc_config_bus should be renamed to mpc_bus.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:22:59 +01:00
Jaswinder Singh Rajput
f29521e4ee x86: rename mp_config_table to mpc_table
Impact: cleanup, solve 80 columns wrap problems

mp_config_table should be renamed to mpc_table.
The reason: the 'c' in MPC already means 'config' -
no need to repeat that in the type name.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 13:22:58 +01:00
Ingo Molnar
4010b0192d Merge branch 'linus' into core/urgent 2009-01-04 10:59:36 +01:00
Jiri Slaby
7aed55d108 x86: fix RIP printout in early_idt_handler
Impact: fix debug/crash printout

Since errorcode is popped out, RIP is on the top of the stack.
Use real RIP value instead of wrong CS.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-04 10:20:29 +01:00
Linus Torvalds
7d3b56ba37 Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
  x86: setup_per_cpu_areas() cleanup
  cpumask: fix compile error when CONFIG_NR_CPUS is not defined
  cpumask: use alloc_cpumask_var_node where appropriate
  cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
  x86: use cpumask_var_t in acpi/boot.c
  x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
  sched: put back some stack hog changes that were undone in kernel/sched.c
  x86: enable cpus display of kernel_max and offlined cpus
  ia64: cpumask fix for is_affinity_mask_valid()
  cpumask: convert RCU implementations, fix
  xtensa: define __fls
  mn10300: define __fls
  m32r: define __fls
  h8300: define __fls
  frv: define __fls
  cris: define __fls
  cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
  cpumask: zero extra bits in alloc_cpumask_var_node
  cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
  cpumask: convert mm/
  ...
2009-01-03 12:04:39 -08:00
Linus Torvalds
269b012321 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu: (89 commits)
  AMD IOMMU: remove now unnecessary #ifdefs
  AMD IOMMU: prealloc_protection_domains should be static
  kvm/iommu: fix compile warning
  AMD IOMMU: add statistics about total number of map requests
  AMD IOMMU: add statistics about allocated io memory
  AMD IOMMU: add stats counter for domain tlb flushes
  AMD IOMMU: add stats counter for single iommu domain tlb flushes
  AMD IOMMU: add stats counter for cross-page request
  AMD IOMMU: add stats counter for free_coherent requests
  AMD IOMMU: add stats counter for alloc_coherent requests
  AMD IOMMU: add stats counter for unmap_sg requests
  AMD IOMMU: add stats counter for map_sg requests
  AMD IOMMU: add stats counter for unmap_single requests
  AMD IOMMU: add stats counter for map_single requests
  AMD IOMMU: add stats counter for completion wait events
  AMD IOMMU: add init code for statistic collection
  AMD IOMMU: add necessary header defines for stats counting
  AMD IOMMU: add Kconfig entry for statistic collection code
  AMD IOMMU: use dev_name in iommu_enable function
  AMD IOMMU: use calc_devid in prealloc_protection_domains
  ...
2009-01-03 12:03:52 -08:00
Cyrill Gorcunov
ab14398abd x86: setup_per_cpu_areas() cleanup
Impact: cleanup

__alloc_bootmem and __alloc_bootmem_node do panic
for us in case of fail so no need for additional
checks here.

Also lets use pr_*() macros for printing.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:15:42 +01:00
Mike Travis
80855f7361 cpumask: use alloc_cpumask_var_node where appropriate
Impact: Reduce inter-node memory traffic.

Reduces inter-node memory traffic (offloading the global system bus)
by allocating referenced struct cpumasks on the same node as the
referring struct.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:15:40 +01:00
Rusty Russell
2fdf66b491 cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
Impact: Reduce memory usage, use new API.

This is part of an effort to reduce structure sizes for machines
configured with large NR_CPUS.  cpumask_t gets replaced by
cpumask_var_t, which is either struct cpumask[1] (small NR_CPUS) or
struct cpumask * (large NR_CPUS).

(Changes to powernow-k* by <travis>.)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:15:40 +01:00
Rusty Russell
ee943a82b6 x86: use cpumask_var_t in acpi/boot.c
Impact: reduce stack size, use new API.

Replace cpumask_t with cpumask_var_t.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:15:39 +01:00
Mike Travis
9628937d5b x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
Impact: Reduce future system panics due to cpumask operations using NR_CPUS

Insure that code does not look at bits >= nr_cpu_ids as when cpumasks are
allocated based on nr_cpu_ids, these extra bits will not be defined.

Also some other minor updates:

   * change in to use cpu accessor function set_cpu_present() instead of
     directly accessing cpu_present_map w/cpu_clear() [arch/x86/kernel/reboot.c]

   * use cpumask_of() instead of &cpumask_of_cpu() [arch/x86/kernel/reboot.c]

   * optimize some cpu_mask_to_apicid_and functions.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 19:00:55 +01:00
Mike Travis
730cf27246 x86: enable cpus display of kernel_max and offlined cpus
Impact: enables /sys/devices/system/cpu/{kernel_max,offline} user interface

By setting total_cpus, the drivers/base/cpu.c will display the
values of kernel_max (NR_CPUS-1) and the offlined cpu map.

Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 18:59:47 +01:00
Mike Travis
7eb1955336 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask into merge-rr-cpumask
Conflicts:
	arch/x86/kernel/io_apic.c
	kernel/rcuclassic.c
	kernel/sched.c
	kernel/time/tick-sched.c

Signed-off-by: Mike Travis <travis@sgi.com>
[ mingo@elte.hu: backmerged typo fix for io_apic.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-03 18:53:31 +01:00
Joerg Roedel
065a6d68c7 AMD IOMMU: remove now unnecessary #ifdefs
The #ifdef's are no longer necessary when the iommu-api and the amd
iommu updates are merged together.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 16:44:15 +01:00
Jaswinder Singh Rajput
0e93dd8835 AMD IOMMU: prealloc_protection_domains should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/amd_iommu.c:1299:6: warning: symbol 'prealloc_protection_domains' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 16:41:18 +01:00
Joerg Roedel
8ecaf8f19f AMD IOMMU: add statistics about total number of map requests
Impact: see total number of map requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:12:00 +01:00
Joerg Roedel
5774f7c5fe AMD IOMMU: add statistics about allocated io memory
Impact: see amount of allocated io memory in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:12:00 +01:00
Joerg Roedel
18811f55d4 AMD IOMMU: add stats counter for domain tlb flushes
Impact: see number of domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
f57d98ae69 AMD IOMMU: add stats counter for single iommu domain tlb flushes
Impact: see number of single iommu domain tlb flushes in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
c1858976f5 AMD IOMMU: add stats counter for cross-page request
Impact: see number of requests for more than one page in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
5d31ee7e08 AMD IOMMU: add stats counter for free_coherent requests
Impact: see number of free_coherent requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
c8f0fb36bf AMD IOMMU: add stats counter for alloc_coherent requests
Impact: see number of alloc_coherent requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
55877a6bcd AMD IOMMU: add stats counter for unmap_sg requests
Impact: see number of unmap_sg requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
d03f067a9d AMD IOMMU: add stats counter for map_sg requests
Impact: see number of map_sg requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
146a6917fc AMD IOMMU: add stats counter for unmap_single requests
Impact: see number of unmap_single requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
0f2a86f200 AMD IOMMU: add stats counter for map_single requests
Impact: see number of map_single requests in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:59 +01:00
Joerg Roedel
da49f6df72 AMD IOMMU: add stats counter for completion wait events
Impact: see number of completion wait events in debugfs

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:58 +01:00
Joerg Roedel
7f26508bbb AMD IOMMU: add init code for statistic collection
Impact: create a new debugfs directory

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:58 +01:00
Joerg Roedel
a4e267c88b AMD IOMMU: use dev_name in iommu_enable function
Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel
edcb34da25 AMD IOMMU: use calc_devid in prealloc_protection_domains
Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel
c226f85309 AMD IOMMU: convert amd_iommu_isolate to bool
Impact: cleanup

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel
0cfd7aa90b AMD IOMMU: convert iommu->need_sync to bool
Impact: use bool instead of int for iommu->need_sync

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:57 +01:00
Joerg Roedel
ab89672286 AMD IOMMU: use dev_name instead of self-build print_devid
Impact: use generic dev_name instead of own function

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
1ac4cbbc5e AMD IOMMU: allocate a new protection for hotplugged devices
Impact: also hotplug devices benefit from device isolation

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
e2dc14a2a6 AMD IOMMU: add a domain flag for default domains
Impact: adds a new protection domain flag

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
26961efe0d AMD IOMMU: register functions for the IOMMU API
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
645c4c8d72 AMD IOMMU: add domain address lookup function for IOMMU API
Impact: add a generic function to lockup addresses in protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
eb74ff6cc0 AMD IOMMU: add domain unmap function for IOMMU API
Impact: add a generic function to unmap pages into protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
c6229ca649 AMD IOMMU: add domain map function for IOMMU API
Impact: add a generic function to map pages into protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
01106066a6 AMD IOMMU: add device attach function for IOMMU API
Impact: add a generic function to attach devices to protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:56 +01:00
Joerg Roedel
684f288884 AMD IOMMU: add device detach function for IOMMU API
Impact: add a generic function to detach devices from protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
98383fc301 AMD IOMMU: add domain destroy function for IOMMU API
Impact: add a generic function for releasing protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
c156e347d6 AMD IOMMU: add domain init function for IOMMU API
Impact: add a generic function for allocation protection domains

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
6d98cd8043 AMD IOMMU: add domain cleanup helper function
Impact: add a function to remove all devices from a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
e275a2a0fc AMD IOMMU: add device notifier callback
Impact: inform IOMMU about state change of a device in the driver core

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
355bf553ed AMD IOMMU: add device detach helper functions
Impact: add helper functions to detach a device from a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:55 +01:00
Joerg Roedel
f1179dc005 AMD IOMMU: rename set_device_domain function
Impact: rename set_device_domain() to attach_device()

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
863c74ebd0 AMD IOMMU: add device reference counting for protection domains
Impact: know how many devices are assigned to a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
5b28df6f43 AMD IOMMU: add checks for dma_ops domain to dma_ops functions
Impact: detect when a driver uses a device assigned otherwise

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
9fdb19d64c AMD IOMMU: add protection domain flags
Imapct: add a new struct member to 'struct protection_domain'

When using protection domains for dma_ops and KVM its better to know for
which subsystem it was allocated. Add a flags member to struct
protection domain for that purpose.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
43f4960983 AMD IOMMU: add iommu_flush_domain function
Impact: add a function to flush a domain id on every IOMMU

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
9e919012e3 AMD IOMMU: don't remove protection domain from iommu_pd_list
Impact: save unneeded logic to add and remove domains to the list

The removal of a protection domain from the iommu_pd_list is not
necessary. Another benefit is that we save complexity because we don't
have to readd it later when the device no longer uses the domain.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
237b6f3329 AMD IOMMU: move invalidation command building to a separate function
Impact: refactoring of iommu_queue_inv_iommu_pages

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
8d201968e1 AMD IOMMU: refactor completion wait handling into separate functions
Impact: split one function into three

The separate functions are required synchronize commands across all
hardware IOMMUs in the system.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:54 +01:00
Joerg Roedel
a2acfb7579 AMD IOMMU: add domain id free function
Impact: add code to release a domain id

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Joerg Roedel
86db2e5d47 AMD IOMMU: make dma_ops_free_pagetable generic
Impact: change code to free pagetables from protection domains

The dma_ops_free_pagetable function can only free pagetables from
dma_ops domains. Change that to free pagetables of pure protection
domains.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Joerg Roedel
38e817febe AMD IOMMU: rename iommu_map to iommu_map_page
Impact: function rename

The iommu_map function maps only one page. Make this clear in the
function name.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:53 +01:00
Markus Trippelsdorf
37dd3cb415 x86: remove debug printks (io_apic.c)
Impact: reduce printk noise

The message "alloc irq_2_pin on cpu 0 node 0" is printed way too often.

% dmesg|grep irq_2_pin|wc -l
20

Get rid of the debug printks.

Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 23:19:36 +01:00
Ingo Molnar
47dabdc7fc Merge branches 'x86/cleanups', 'x86/fpu' and 'x86/urgent' into x86/core 2009-01-02 22:41:52 +01:00
Ingo Molnar
923a789b49 Merge branch 'linus' into x86/cleanups
Conflicts:
	arch/x86/kernel/reboot.c
2009-01-02 22:41:36 +01:00
Roland Dreier
79ff56ebd3 swiotlb: add missing __init annotations
Impact: cleanup, reduce kernel size a bit

The current kernel build warns:

    WARNING: vmlinux.o(.text+0x11458): Section mismatch in reference from the function swiotlb_alloc_boot() to the function .init.text:__alloc_bootmem_low()
    The function swiotlb_alloc_boot() references
    the function __init __alloc_bootmem_low().
    This is often because swiotlb_alloc_boot lacks a __init
    annotation or the annotation of __alloc_bootmem_low is wrong.

    WARNING: vmlinux.o(.text+0x1011f2): Section mismatch in reference from the function swiotlb_late_init_with_default_size() to the function .init.text:__alloc_bootmem_low()
    The function swiotlb_late_init_with_default_size() references
    the function __init __alloc_bootmem_low().
    This is often because swiotlb_late_init_with_default_size lacks a __init
    annotation or the annotation of __alloc_bootmem_low is wrong.

and indeed the functions calling __alloc_bootmem_low() can be marked
__init as well.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 21:52:39 +01:00
Linus Torvalds
b840d79631 Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (66 commits)
  x86: export vector_used_by_percpu_irq
  x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
  sched: nominate preferred wakeup cpu, fix
  x86: fix lguest used_vectors breakage, -v2
  x86: fix warning in arch/x86/kernel/io_apic.c
  sched: fix warning in kernel/sched.c
  sched: move test_sd_parent() to an SMP section of sched.h
  sched: add SD_BALANCE_NEWIDLE at MC and CPU level for sched_mc>0
  sched: activate active load balancing in new idle cpus
  sched: bias task wakeups to preferred semi-idle packages
  sched: nominate preferred wakeup cpu
  sched: favour lower logical cpu number for sched_mc balance
  sched: framework for sched_mc/smt_power_savings=N
  sched: convert BALANCE_FOR_xx_POWER to inline functions
  x86: use possible_cpus=NUM to extend the possible cpus allowed
  x86: fix cpu_mask_to_apicid_and to include cpu_online_mask
  x86: update io_apic.c to the new cpumask code
  x86: Introduce topology_core_cpumask()/topology_thread_cpumask()
  x86: xen: use smp_call_function_many()
  x86: use work_on_cpu in x86/kernel/cpu/mcheck/mce_amd_64.c
  ...

Fixed up trivial conflict in kernel/time/tick-sched.c manually
2009-01-02 11:44:09 -08:00
Linus Torvalds
597b0d2162 Merge branch 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (140 commits)
  KVM: MMU: handle large host sptes on invlpg/resync
  KVM: Add locking to virtual i8259 interrupt controller
  KVM: MMU: Don't treat a global pte as such if cr4.pge is cleared
  MAINTAINERS: Maintainership changes for kvm/ia64
  KVM: ia64: Fix kvm_arch_vcpu_ioctl_[gs]et_regs()
  KVM: x86: Rework user space NMI injection as KVM_CAP_USER_NMI
  KVM: VMX: Fix pending NMI-vs.-IRQ race for user space irqchip
  KVM: fix handling of ACK from shared guest IRQ
  KVM: MMU: check for present pdptr shadow page in walk_shadow
  KVM: Consolidate userspace memory capability reporting into common code
  KVM: Advertise the bug in memory region destruction as fixed
  KVM: use cpumask_var_t for cpus_hardware_enabled
  KVM: use modern cpumask primitives, no cpumask_t on stack
  KVM: Extract core of kvm_flush_remote_tlbs/kvm_reload_remote_mmus
  KVM: set owner of cpu and vm file operations
  anon_inodes: use fops->owner for module refcount
  x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj
  KVM: MMU: prepopulate the shadow on invlpg
  KVM: MMU: skip global pgtables on sync due to cr3 switch
  KVM: MMU: collapse remote TLB flushes on root sync
  ...
2009-01-02 11:41:11 -08:00
Jaswinder Singh Rajput
103ceffb95 x86: mpparse.c fix style problems
Impact: cleanup, fix style problems, more readable

Fixes style problems:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/acpi.h> instead of <asm/acpi.h>
 WARNING: suspect code indent for conditional statements (8, 17)
 WARNING: space prohibited between function name and open parenthesis '('

total: 0 errors, 5 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 19:24:28 +01:00
Jaswinder Singh Rajput
dceb4521c8 x86: nmi.c fix style problems
Impact: cleanup, fix style problems

Fixes style problems:

 WARNING: Use #include <linux/smp.h> instead of <asm/smp.h>
 WARNING: Use #include <linux/nmi.h> instead of <asm/nmi.h>

total: 0 errors, 2 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 19:03:38 +01:00
Jaswinder Singh Rajput
423a54058f x86: ldt.c fix style problems
Impact: cleanup

Fixes style problems:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 ERROR: space required before the open parenthesis '('

total: 1 errors, 1 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:46:24 +01:00
Jaswinder Singh Rajput
f634fa9411 x86: cpuid.c fix style problems
Impact: cleanup

Fixes style problems:

 WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>
 ERROR: "foo * bar" should be "foo *bar"
 ERROR: trailing whitespace
 WARNING: usage of NR_CPUS is often wrong - consider using cpu_possible(), num_possible_cpus(), for_each_possible_cpu(), etc

total: 2 errors, 2 warnings

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:46:23 +01:00
Cliff Wickman
46814dded1 x86, UV: remove erroneous BAU initialization
Impact: fix crash on x86/UV

UV is the SGI "UltraViolet" machine, which is x86_64 based.
BAU is the "Broadcast Assist Unit", used for TLB shootdown in UV.

This patch removes the allocation and initialization of an unused table.

This table is left over from a development test mode.  It is unused in
the present code.

And it was incorrectly initialized: 8 entries allocated but 17 initialized,
causing slab corruption.

This patch should go into 2.6.27 and 2.6.28 as well as the current tree.

Diffed against 2.6.28 (linux-next, 12/30/08)

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:26:25 +01:00
Ravikiran G Thirumalai
26799a6311 x86: fix incorrect __read_mostly on _boot_cpu_pda
The pda rework (commit 3461b0af02)
to remove static boot cpu pdas introduced a performance bug.

_boot_cpu_pda is the actual pda used by the boot cpu and is definitely
not "__read_mostly" and ended up polluting the read mostly section with
writes.  This bug caused regression of about 8-10% on certain syscall
intensive workloads.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Acked-by: Mike Travis <travis@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 17:16:29 +01:00
Cyrill Gorcunov
c64d8996bd x86: early_printk - use sizeof instead of hardcoded number
Impact: cleanup

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-02 10:27:46 +01:00
Linus Torvalds
b58602a4ba Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (34 commits)
  nfsd race fixes: jfs
  nfsd race fixes: reiserfs
  nfsd race fixes: ext4
  nfsd race fixes: ext3
  nfsd race fixes: ext2
  nfsd/create race fixes, infrastructure
  filesystem notification: create fs/notify to contain all fs notification
  fs/block_dev.c: __read_mostly improvement and sb_is_blkdev_sb utilization
  kill ->dir_notify()
  filp_cachep can be static in fs/file_table.c
  fix f_count description in Documentation/filesystems/files.txt
  make INIT_FS use the __RW_LOCK_UNLOCKED initialization
  take init_fs to saner place
  kill vfs_permission
  pass a struct path * to may_open
  kill walk_init_root
  remove incorrect comment in inode_permission
  expand some comments (d_path / seq_path)
  correct wrong function name of d_put in kernel document and source comment
  fix switch_names() breakage in short-to-short case
  ...
2008-12-31 15:57:56 -08:00
Al Viro
18d8fda7c3 take init_fs to saner place
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-12-31 18:07:42 -05:00
Linus Torvalds
db200df0b3 Merge branch 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus-4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sparseirq: move __weak symbols into separate compilation unit
  sparseirq: work around __weak alias bug
  sparseirq: fix hang with !SPARSE_IRQ
  sparseirq: set lock_class for legacy irq when sparse_irq is selected
  sparseirq: work around compiler optimizing away __weak functions
  sparseirq: fix desc->lock init
  sparseirq: do not printk when migrating IRQ descriptors
  sparseirq: remove duplicated arch_early_irq_init()
  irq: simplify for_each_irq_desc() usage
  proc: remove ifdef CONFIG_SPARSE_IRQ from stat.c
  irq: for_each_irq_desc() move to irqnr.h
  hrtimer: remove #include <linux/irq.h>
2008-12-31 09:00:59 -08:00
Eduardo Habkost
e93353c93a x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj
kvm_get_tsc_khz() currently returns the previously-calculated preset_lpj
value, but it is in loops-per-jiffy, not kHz. The current code works
correctly only when HZ=1000.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:44 +02:00
Glauber Costa
423cd25a5a x86: KVM guest: sign kvmclock as paravirt
Currently, we only set the KVM paravirt signature in case
of CONFIG_KVM_GUEST. However, it is possible to have it turned
off, while CONFIG_KVM_CLOCK is turned on. This is also a paravirt
case, and should be shown accordingly.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:55:00 +02:00
Eduardo Habkost
d176720d34 x86: disable VMX on all CPUs on reboot
On emergency_restart, we may need to use an NMI to disable virtualization
on all CPUs. We do that using nmi_shootdown_cpus() if VMX is enabled.

Note: With this patch, we will run the NMI stuff only when the CPU where
emergency_restart() was called has VMX enabled. This should work on most
cases because KVM enables VMX on all CPUs, but we may miss the small
window where KVM is doing that. Also, I don't know if all code using
VMX out there always enable VMX on all CPUs like KVM does. We have two
other alternatives for that:

a) Have an API that all code that enables VMX on any CPU should use
   to tell the kernel core that it is going to enable VMX on the CPUs.
b) Always call nmi_shootdown_cpus() if the CPU supports VMX. This is
   a bit intrusive and more risky, as it would run nmi_shootdown_cpus()
   on emergency_reboot() even on systems where virtualization is never
   enabled.

Finding a proper point to hook the nmi_shootdown_cpus() call isn't
trivial, as the non-emergency machine_restart() (that doesn't need the
NMI tricks) uses machine_emergency_restart() directly.

The solution to make this work without adding a new function or argument
to machine_ops was setting a 'reboot_emergency' flag that tells if
native_machine_emergency_restart() needs to do the virt cleanup or not.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:54:58 +02:00
Eduardo Habkost
2340b62f77 kdump: forcibly disable VMX and SVM on machine_crash_shutdown()
We need to disable virtualization extensions on all CPUs before booting
the kdump kernel, otherwise the kdump kernel booting will fail, and
rebooting after the kdump kernel did its task may also fail.

We do it using cpu_emergency_vmxoff() and cpu_emergency_svm_disable(),
that should always work, because those functions check if the CPUs
support SVM or VMX before doing their tasks.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:52:30 +02:00
Sheng Yang
932d27a791 x86: Export some definition of MTRR
For KVM can reuse the type define, and need them to support shadow MTRR.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:51:44 +02:00
Sheng Yang
b558bc0a25 x86: Rename mtrr_state struct and macro names
Prepare for exporting them.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2008-12-31 16:51:44 +02:00
Rusty Russell
2ca1a61583 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	arch/x86/kernel/io_apic.c
2008-12-31 23:05:57 +10:30
Linus Torvalds
179475a3b4 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, sparseirq: clean up Kconfig entry
  x86: turn CONFIG_SPARSE_IRQ off by default
  sparseirq: fix numa_migrate_irq_desc dependency and comments
  sparseirq: add kernel-doc notation for new member in irq_desc, -v2
  locking, irq: enclose irq_desc_lock_class in CONFIG_LOCKDEP
  sparseirq, xen: make sure irq_desc is allocated for interrupts
  sparseirq: fix !SMP building, #2
  x86, sparseirq: move irq_desc according to smp_affinity, v7
  proc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ
  sparse irqs: add irqnr.h to the user headers list
  sparse irqs: handle !GENIRQ platforms
  sparseirq: fix !SMP && !PCI_MSI && !HT_IRQ build
  sparseirq: fix Alpha build failure
  sparseirq: fix typo in !CONFIG_IO_APIC case
  x86, MSI: pass irq_cfg and irq_desc
  x86: MSI start irq numbering from nr_irqs_gsi
  x86: use NR_IRQS_LEGACY
  sparse irq_desc[] array: core kernel and x86 changes
  genirq: record IRQ_LEVEL in irq_desc[]
  irq.h: remove padding from irq_desc on 64bits
2008-12-30 16:20:19 -08:00
Linus Torvalds
bb758e9637 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  hrtimers: fix warning in kernel/hrtimer.c
  x86: make sure we really have an hpet mapping before using it
  x86: enable HPET on Fujitsu u9200
  linux/timex.h: cleanup for userspace
  posix-timers: simplify de_thread()->exit_itimers() path
  posix-timers: check ->it_signal instead of ->it_pid to validate the timer
  posix-timers: use "struct pid*" instead of "struct task_struct*"
  nohz: suppress needless timer reprogramming
  clocksource, acpi_pm.c: put acpi_pm_read_slow() under CONFIG_PCI
  nohz: no softirq pending warnings for offline cpus
  hrtimer: removing all ur callback modes, fix
  hrtimer: removing all ur callback modes, fix hotplug
  hrtimer: removing all ur callback modes
  x86: correct link to HPET timer specification
  rtc-cmos: export second NVRAM bank

Fixed up conflicts in sound/drivers/pcsp/pcsp.c and sound/core/hrtimer.c
manually.
2008-12-30 16:16:21 -08:00
Linus Torvalds
5f34fe1cfc Merge branch 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits)
  stacktrace: provide save_stack_trace_tsk() weak alias
  rcu: provide RCU options on non-preempt architectures too
  printk: fix discarding message when recursion_bug
  futex: clean up futex_(un)lock_pi fault handling
  "Tree RCU": scalable classic RCU implementation
  futex: rename field in futex_q to clarify single waiter semantics
  x86/swiotlb: add default swiotlb_arch_range_needs_mapping
  x86/swiotlb: add default phys<->bus conversion
  x86: unify pci iommu setup and allow swiotlb to compile for 32 bit
  x86: add swiotlb allocation functions
  swiotlb: consolidate swiotlb info message printing
  swiotlb: support bouncing of HighMem pages
  swiotlb: factor out copy to/from device
  swiotlb: add arch hook to force mapping
  swiotlb: allow architectures to override phys<->bus<->phys conversions
  swiotlb: add comment where we handle the overflow of a dma mask on 32 bit
  rcu: fix rcutorture behavior during reboot
  resources: skip sanity check of busy resources
  swiotlb: move some definitions to header
  swiotlb: allow architectures to override swiotlb pool allocation
  ...

Fix up trivial conflicts in
  arch/x86/kernel/Makefile
  arch/x86/mm/init_32.c
  include/linux/hardirq.h
as per Ingo's suggestions.
2008-12-30 16:10:19 -08:00
Jaswinder Singh Rajput
7820b75643 x86: xsave.c: restore_user_xstate should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/xsave.c:162:5: warning: symbol 'restore_user_xstate' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-30 13:31:41 -08:00
Jaswinder Singh Rajput
ec8c842a52 x86: apic.c: xapic_icr_read and x2apic_icr_read should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/apic.c:270:5: warning: symbol 'x2apic_icr_read' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-30 13:31:28 -08:00
Jaswinder Singh Rajput
c62e9d56ea x86: bios_uv.c: uv_systab should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/bios_uv.c:28:18: warning: symbol 'uv_systab' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-29 22:08:28 -08:00
Jaswinder Singh Rajput
4d08d97f52 x86: genx2apic_phys.c: x2apic_send_IPI_self and init_x2apic_ldr should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warnings

Fixes sparse warnings:
arch/x86/kernel/genx2apic_phys.c:164:6: warning: symbol 'x2apic_send_IPI_self' was not declared. Should it be static?
arch/x86/kernel/genx2apic_phys.c:169:6: warning: symbol 'init_x2apic_ldr' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-29 22:08:22 -08:00
Jaswinder Singh Rajput
557f687c87 x86: amd_iommu.c: prealloc_protection_domains should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/amd_iommu.c:1299:6: warning: symbol 'prealloc_protection_domains' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-29 22:08:17 -08:00
Jaswinder Singh Rajput
412a1be265 x86: amd_iommu_init.c: iommu_enable and iommu_enable_event_logging should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:
arch/x86/kernel/amd_iommu_init.c:246:13: warning: symbol 'iommu_enable' was not declared. Should it be static?
arch/x86/kernel/amd_iommu_init.c:259:13: warning: symbol 'iommu_enable_event_logging' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-29 22:08:12 -08:00
Rusty Russell
33edcf133b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-12-30 08:02:35 +10:30
Jaswinder Singh Rajput
824877111c x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.h
Impact: cleanup

Now that arch/x86/pci/pci.h is used in a number of other places as well,
move the lowlevel x86 pci definitions into the architecture include files.
(not to be confused with the existing arch/x86/include/asm/pci.h file,
which provides public details about x86 PCI)

Tested on: X86_32_UP, X86_32_SMP and X86_64_SMP

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29 18:17:36 +01:00
Jaswinder Singh Rajput
c854c91979 x86_64: pci-gart_64.c iommu_fullflush should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:

  arch/x86/kernel/pci-gart_64.c:55:5: warning: symbol 'iommu_fullflush' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29 18:17:33 +01:00
Jaswinder Singh Rajput
7f3e632f9d x86: io_apic.c io_apic_sync should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:

  arch/x86/kernel/io_apic.c:709:6: warning: symbol 'io_apic_sync' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29 18:17:31 +01:00
Sergio Luis
6092848a2a x86: mark get_cpu_leaves() with __cpuinit annotation
Impact: fix section mismatch warning

Commit b2bb855491 ("x86: Remove cpumask games
in x86/kernel/cpu/intel_cacheinfo.c") introduced get_cpu_leaves(), which
references __cpuinit cpuid4_cache_lookup().

Mark get_cpu_leaves() with a __cpuinit annotation.

Signed-off-by: Sergio Luis <sergio@larces.uece.br>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29 13:11:18 +01:00
Ingo Molnar
75329f1f0c Merge branch 'linus' into x86/cleanups 2008-12-29 13:09:40 +01:00
Linus Torvalds
b0f4b285d7 Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits)
  sched, trace: update trace_sched_wakeup()
  tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3
  Revert "x86: disable X86_PTRACE_BTS"
  ring-buffer: prevent false positive warning
  ring-buffer: fix dangling commit race
  ftrace: enable format arguments checking
  x86, bts: memory accounting
  x86, bts: add fork and exit handling
  ftrace: introduce tracing_reset_online_cpus() helper
  tracing: fix warnings in kernel/trace/trace_sched_switch.c
  tracing: fix warning in kernel/trace/trace.c
  tracing/ring-buffer: remove unused ring_buffer size
  trace: fix task state printout
  ftrace: add not to regex on filtering functions
  trace: better use of stack_trace_enabled for boot up code
  trace: add a way to enable or disable the stack tracer
  x86: entry_64 - introduce FTRACE_ frame macro v2
  tracing/ftrace: add the printk-msg-only option
  tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()
  x86, bts: correctly report invalid bts records
  ...

Fixed up trivial conflict in scripts/recordmcount.pl due to SH bits
being already partly merged by the SH merge.
2008-12-28 12:21:10 -08:00
Jeremy Fitzhardinge
70a7d3cc13 swiotlb: add hwdev to swiotlb_phys_to_bus() / swiotlb_sg_to_bus()
Impact: extend functions with a (yet unused) parameter, update callsites

Some architectures need it - in preparation for highmem swiotlb.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-28 09:54:52 +01:00
Yinghai Lu
13a0c3c269 sparseirq: work around compiler optimizing away __weak functions
Impact: fix panic on null pointer with sparseirq

Some GCC versions seem to inline the weak global function,
when that function is empty.

Work it around, by making the functions return a (dummy) integer.

Signed-off-by: Yinghai <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-27 13:24:00 +01:00
Jaswinder Singh
b6b301aa9f x86: apic.c x2apic_preenabled and disable_x2apic should be static
Impact: cleanup, reduce kernel size a bit, avoid sparse warning

Fixes sparse warning:

  arch/x86/kernel/apic.c:103:5: warning: symbol 'disable_x2apic' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-27 11:30:18 +01:00
Jaswinder Singh
0b936bfdeb x86: reboot.c declare port_cf9_safe before they get used
Impact: cleanup, avoid sparse warning

Include "../pci/pci.h" for port_cf9_safe

Fixes this sparse warning:

  arch/x86/kernel/reboot.c:43:6: warning: symbol 'port_cf9_safe' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-27 11:30:17 +01:00
Ingo Molnar
34bf5d0ff5 Merge branch 'x86/core' into x86/cleanups 2008-12-27 11:30:05 +01:00
Rusty Russell
030bb203e0 cpumask: cpu_coregroup_mask(): x86
Impact: New API

Like cpu_coregroup_map, but returns a (const) pointer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>
2008-12-26 22:23:41 +10:30
Rusty Russell
393d68fb99 cpumask: x86: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask
Impact: New APIs

The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask.  Part of removing cpumasks from
the stack.

Also makes __pcibus_to_node take a const pointer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
2008-12-26 22:23:38 +10:30
KOSAKI Motohiro
18eefedfe8 irq: simplify for_each_irq_desc() usage
Impact: cleanup

all for_each_irq_desc() usage point have !desc check.
then its check can move into for_each_irq_desc() macro.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-26 09:48:18 +01:00
Ingo Molnar
bd8b96dfc2 x86: clean up comment style in arch/x86/kernel/traps.c
Impact: cleanup

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-26 09:21:13 +01:00
Ingo Molnar
c656d9ca48 Merge branch 'x86/fpu' into x86/cleanups 2008-12-26 09:21:05 +01:00
Rusty Russell
71ab6b245f x86: remove impossible test in mtrr/main.c
Impact: cleanup

enable_mtrr_cleanup is static, and is never set to anything but 0 or 1.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-25 12:46:06 -08:00
H. Peter Anvin
a73ad3331f x86: unify the implementation of FPU traps
On 32 bits, we may suffer IRQ 13, or supposedly we might have a buggy
implementation which gives spurious trap 16.  We did not check for
this on 64 bits, but there is no reason we can't make the code the
same in both cases.  Furthermore, this is presumably rare, so do the
spurious check last, instead of first.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-25 10:39:01 -08:00
Ingo Molnar
32e8d18683 Merge branches 'timers/clocksource', 'timers/hpet', 'timers/hrtimers', 'timers/nohz', 'timers/ntp', 'timers/posixtimers' and 'timers/rtc' into timers/core 2008-12-25 18:02:25 +01:00
Ingo Molnar
860cf8894b Merge branches 'irq/sparseirq', 'irq/genirq' and 'irq/urgent'; commit 'v2.6.28' into irq/core 2008-12-25 16:27:54 +01:00
Ingo Molnar
6638101c11 Merge branches 'core/debugobjects', 'core/iommu', 'core/locking', 'core/printk', 'core/rcu', 'core/resources', 'core/softirq' and 'core/stacktrace' into core/core 2008-12-25 14:06:29 +01:00
Ingo Molnar
5250d329e3 Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and 'tracing/ring-buffer'; commit 'v2.6.28' into tracing/core 2008-12-25 13:11:00 +01:00
Ingo Molnar
a3eeeefbf1 Merge branch 'x86/tsc' into tracing/core
Merge it to resolve this incidental conflict between the BTS fixes/cleanups
and changes in x86/tsc:

Conflicts:
	arch/x86/kernel/cpu/intel.c
2008-12-25 12:48:18 +01:00
Ingo Molnar
79a66b96c3 Merge branches 'x86/pat2' and 'x86/fpu'; commit 'v2.6.28' into x86/core 2008-12-25 11:50:41 +01:00
Jaswinder Singh
1fcccb008b x86: traps.c replace #if CONFIG_X86_32 with #ifdef CONFIG_X86_32
Impact: cleanup, avoid warning on X86_64

Fixes this warning on X86_64:

  CC      arch/x86/kernel/traps.o
  arch/x86/kernel/traps.c:695:5: warning: "CONFIG_X86_32" is not defined

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25 11:49:55 +01:00
Frederic Weisbecker
0ca59dd948 tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3
Impact: fix a crash/hard-reboot on certain configs while enabling cpu runtime

On some archs, the boot of a secondary cpu can have an early fragile state.
On x86-64, the pda is not initialized on the first stage of a cpu boot but
it is needed to get the cpu number and the current task pointer. This data
is needed during tracing. As they were dereferenced at this stage, we got a
crash while tracing a cpu being enabled at runtime.

Some other archs like ia64 can have such kind of issue too.

Changes on v2:

We dropped the previous solution of a per-arch called function to guess the
current state of a cpu. That could slow down the tracing.

This patch removes the -pg flag on arch/x86/kernel/cpu/common.c where
the low level cpu boot functions exist, on start_secondary() and a helper
function used at this stage.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25 09:39:22 +01:00
Ingo Molnar
db8862eafe Merge branch 'linus' into tracing/hw-branch-tracing 2008-12-24 21:08:26 +01:00
Ingo Molnar
c3d80000e3 x86: export vector_used_by_percpu_irq
Impact: build fix

lguest can be built as a module and makes use of this new symbol:

ERROR: "vector_used_by_percpu_irq" [drivers/lguest/lg.ko] undefined!

export it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-23 22:37:31 +01:00
Suresh Siddha
7d87d53655 x86: use logical apicid in x2apic_cluster's x2apic_cpu_mask_to_apicid_and()
These commits:

	commit 95d313cf1c
	Author: Mike Travis <travis@sgi.com>
	Date:   Tue Dec 16 17:33:54 2008 -0800

	    x86: Add cpu_mask_to_apicid_and

and
	commit 6eeb7c5a99
	Author: Mike Travis <travis@sgi.com>
	Date:   Tue Dec 16 17:33:55 2008 -0800

	    x86: update add-cpu_mask_to_apicid_and to use struct cpumask*

broke interrupt delivery on x2apic platforms.  As x2apic cluster mode uses
logical delivery mode, we need to use logical apicid instead of physical apicid
in x2apic_cpu_mask_to_apicid_and()

Impact: fixes the broken interrupt delivery issue on generic x2apic platforms.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Mike Travis <travis@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-23 22:37:30 +01:00
Yinghai Lu
b77b881f21 x86: fix lguest used_vectors breakage, -v2
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: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-23 22:37:28 +01:00
Ingo Molnar
bed4f13065 Merge branch 'x86/irq' into x86/core 2008-12-23 16:30:31 +01:00
Ingo Molnar
3e5621edb3 Merge branch 'x86/iommu' into x86/core 2008-12-23 16:30:27 +01:00
Ingo Molnar
be9a1d3c2e Merge branch 'x86/tsc' into x86/core 2008-12-23 16:30:20 +01:00
Ingo Molnar
7e3cbc3f77 Merge branch 'x86/ptrace' into x86/tsc
Conflicts:
	arch/x86/kernel/cpu/intel.c
2008-12-23 16:29:31 +01:00
Ingo Molnar
fa623d1b02 Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core 2008-12-23 16:27:23 +01:00
Ingo Molnar
bf8bd66d05 Merge branch 'x86/apic' into x86/irq
Conflicts:
	arch/x86/kernel/apic.c
2008-12-23 16:24:15 +01:00
Ingo Molnar
1ccedb7cdb Merge commit 'v2.6.28-rc9' into x86/apic 2008-12-23 16:23:23 +01:00
Len Brown
7b37b5fd9b ACPI: disable MPS when NO APIC-table found
When ACPI is asked to find an MADT (APIC table)
and fails, then ACPI expects to run in PIC mode.

However, if an MP Table is was found, IRQs will be
registered as if an IOAPIC is being used, even
though ACPI is configuring interrupt links links for PIC mode.

In this scenario, disable MPS so that IRQs
are registered in PIC mode, consistent with ACPI.

http://bugzilla.kernel.org/show_bug.cgi?id=12257

Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-23 01:47:42 -05:00
H. Peter Anvin
adf77bac05 x86: prioritize the FPU traps for the error code
In the case of multiple FPU errors, prioritize the error codes,
instead of returning __SI_FAULT, which ends up pushing a 0 as the
error code to userspace, a POSIX violation.

For i386, we will simply return if there are no errors at all; for
x86-64 this is probably a "can't happen" (and the code should be
unified), but for this patch, return __SI_FAULT|SI_KERNEL if this ever
happens.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-22 18:00:18 -08:00
Dmitry Adamushko
280a9ca5d0 x86: fix resume (S2R) broken by Intel microcode module, on A110L
Impact: fix deadlock

This is in response to the following bug report:

Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12100
Subject         : resume (S2R) broken by Intel microcode module, on A110L
Submitter       : Andreas Mohr <andi@lisas.de>
Date            : 2008-11-25 08:48 (19 days old)
Handled-By      : Dmitry Adamushko <dmitry.adamushko@gmail.com>

[ The deadlock scenario has been discovered by Andreas Mohr ]

I think I might have a logical explanation why the system:

  (http://bugzilla.kernel.org/show_bug.cgi?id=12100)

might hang upon resuming, OTOH it should have likely hanged each and every time.

(1) possible deadlock in microcode_resume_cpu() if either 'if' section is
taken;

(2) now, I don't see it in spec. and can't experimentally verify it (newer
ucodes don't seem to be available for my Core2duo)... but logically-wise, I'd
think that when read upon resuming, the 'microcode revision' (MSR 0x8B) should
be back to its original one (we need to reload ucode anyway so it doesn't seem
logical if a cpu doesn't drop the version)... if so, the comparison with
memcmp() for the full 'struct cpu_signature' is wrong... and that's how one of
the aforementioned 'if' sections might have been triggered - leading to a
deadlock.

Obviously, in my tests I simulated loading/resuming with the ucode of the same
version (just to see that the file is loaded/re-loaded upon resuming) so this
issue has never popped up.

I'd appreciate if someone with an appropriate system might give a try to the
2nd patch (titled "fix a comparison && deadlock...").

In any case, the deadlock situation is a must-have fix.

Reported-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Tested-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-20 14:29:20 +01:00
Markus Metzger
c5dee6177f x86, bts: memory accounting
Impact: move the BTS buffer accounting to the mlock bucket

Add alloc_locked_buffer() and free_locked_buffer() functions to mm/mlock.c
to kalloc a buffer and account the locked memory to current.

Account the memory for the BTS buffer to the tracer.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-20 09:15:47 +01:00
Markus Metzger
bf53de907d x86, bts: add fork and exit handling
Impact: introduce new ptrace facility

Add arch_ptrace_untrace() function that is called when the tracer
detaches (either voluntarily or when the tracing task dies);
ptrace_disable() is only called on a voluntary detach.

Add ptrace_fork() and arch_ptrace_fork(). They are called when a
traced task is forked.

Clear DS and BTS related fields on fork.

Release DS resources and reclaim memory in ptrace_untrace(). This
releases resources already when the tracing task dies. We used to do
that when the traced task dies.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-20 09:15:46 +01:00
Jaswinder Singh
34945ede31 x86: common.c boot_cpu_stack and boot_exception_stacks should be static
Impact: cleanup, avoid sparse warnings, reduce kernel size a bit

Fixes these sparse warnings:

 arch/x86/kernel/cpu/common.c:869:6: warning: symbol 'boot_cpu_stack' was not declared. Should it be static?
 arch/x86/kernel/cpu/common.c:910:6: warning: symbol 'boot_exception_stacks' was not declared. Should it be static?

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-19 23:16:08 +01:00
Yinghai Lu
b909895739 sparseirq: fix numa_migrate_irq_desc dependency and comments
Impact: reduce kconfig variable scope and clean up

Bartlomiej pointed out that the config dependencies and comments are not right.

update it depend to NUMA, and fix some comments

Reported-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-19 22:56:02 +01:00
Rafael J. Wysocki
ba84ed9546 ACPI hibernate: Introduce new kernel parameter acpi_sleep=s4_nonvs
On some machines it may be necessary to disable the saving/restoring
of the ACPI NVS memory region during hibernation/resume.  For this
purpose, introduce new ACPI kernel command line option
acpi_sleep=s4_nonvs.

Based on a patch by Zhang Rui.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-19 04:40:35 -05:00
Rafael J. Wysocki
b69edc7653 x86 hibernate: Mark ACPI NVS memory region at startup
Introduce new initcall for marking the ACPI NVS memory at startup, so
that it can be saved/restored during hibernation/resume.

Based on a patch by Zhang Rui.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-12-19 04:40:35 -05:00
Ingo Molnar
30cd324e97 Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' into tracing/core
Conflicts:
	include/linux/ftrace.h
2008-12-19 09:42:40 +01:00
Ingo Molnar
a7883dece6 x86: fix warning in arch/x86/kernel/io_apic.c
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: Ingo Molnar <mingo@elte.hu>
2008-12-19 09:21:59 +01:00