Commit Graph

560 Commits

Author SHA1 Message Date
Linus Torvalds
f39e840995 Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: Compare only lower 32 bits of framebuffer map offsets
  drm/i915: Don't leak in i915_gem_shmem_pread_slow()
  drm/radeon/kms: do bounds checking for 3D_LOAD_VBPNTR and bump array limit
  drm/radeon/kms: fix mac g5 quirk
  x86/uv/x2apic: update for change in pci bridge handling.
  alpha, drm: Remove obsolete Alpha support in MGA DRM code
  alpha/drm: Cleanup Alpha support in DRM generic code
  savage: remove unnecessary if statement
  drm/radeon: fix GUI idle IH debug statements
  drm/radeon/kms: check modes against max pixel clock
  drm: fix fbs in DRM_IOCTL_MODE_GETRESOURCES ioctl
2011-06-14 11:25:32 -07:00
Dave Airlie
7ad35cf288 x86/uv/x2apic: update for change in pci bridge handling.
When I added 3448a19da4
I forgot about the special uv handling code for this, so this
patch fixes it up.

Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Ingo Molnar
Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-06-14 09:50:12 +10:00
Ingo Molnar
86dd7909c2 Merge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/urgent 2011-06-08 15:49:03 +02:00
Robert Richter
cbf74cea07 oprofile, x86: Add comments to IBS LVT offset initialization
Adding a comment in the code as IBS LVT setup is not obvious at all ...

Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-05-30 16:36:54 +02:00
Jack Steiner
2a919596c1 x86, UV: Add support for SGI UV2 hub chip
This patch adds support for a new version of the SGI UV hub
chip. The hub chip is the node controller that connects multiple
blades into a larger coherent SSI.

For the most part, UV2 is compatible with UV1. The majority of
the changes are in the addresses of MMRs and in a few cases, the
contents of MMRs. These changes are the result in changes in the
system topology such as node configuration, processor types,
maximum nodes, physical address sizes, etc.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Link: http://lkml.kernel.org/r/20110511175028.GA18006@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-25 14:20:13 +02:00
Suresh Siddha
2f344d2e51 x86, ioapic: Restore ioapic entries during resume properly
In mask/restore_ioapic_entries() we should be restoring ioapic
entries when ioapics[apic].saved_registers is not NULL.

Fix the typo and address the resume hang regression reported by
Linus.

This was not found sooner because the systems where these
changes were tested on kept the IO-APIC entries intact over
resume.

Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Daniel J Blueman <daniel.blueman@gmail.com>
Link: http://lkml.kernel.org/r/1306259131.7171.7.camel@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-24 20:32:41 +02:00
Linus Torvalds
ea2b50ef4c Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, apic: Include module.h header in apic_flat_64.c
  x86, apic: Make apic drivers static
  x86, apic: Clean up bigsmp apic selection code
  x86, apic: Use .apicdrivers section for the apic drivers list
  x86, apic: Introduce .apicdrivers section to find the list of apic drivers
  x86, x2apic: Move the common bits to x2apic.h
  x86, x2apic: Minimize IPI register writes using cluster groups
  x86, x2apic: Track the x2apic cluster sibling map
  x86, x2apic: Remove duplicate code for IPI mask routines
  x86, apic: Use probe routines to simplify apic selection
  x86, ioapic: Consolidate mp_ioapic_routing[] into 'struct ioapic'
  x86, ioapic: Consolidate gsi routing info into 'struct ioapic'
  x86, ioapic: Consolidate mp_ioapics[] into 'struct ioapic'
  x86, ioapic: Consolidate ioapic_saved_data[] into 'struct ioapic'
  x86, ioapic: Add struct ioapic
  x86, ioapic: Remove duplicate code for saving/restoring RTEs
  x86, ioapic: Use ioapic_saved_data while enabling intr-remapping
  x86, ioapic: Allocate ioapic_saved_data early
  x86, ioapic: Fix potential resume deadlock
2011-05-23 12:54:15 -07:00
Randy Dunlap
b18bf0948e x86, apic: Include module.h header in apic_flat_64.c
apic_flat_64.c needs to include module.h because it uses
EXPORT_SYMBOL_GPL().

This fixes these warnings on some !SMP randconfigs:

  arch/x86/kernel/apic/apic_flat_64.c:31: warning: data definition has no type or storage class
  arch/x86/kernel/apic/apic_flat_64.c:31: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL'
  arch/x86/kernel/apic/apic_flat_64.c:31: warning: parameter names (without types) in function declaration

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20110523104300.dd532a99.randy.dunlap@oracle.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-23 21:27:35 +02:00
Mandeep Singh Baines
4eec42f392 watchdog: Change the default timeout and configure nmi watchdog period based on watchdog_thresh
Before the conversion of the NMI watchdog to perf event, the
watchdog timeout was 5 seconds. Now it is 60 seconds. For my
particular application, netbooks, 5 seconds was a better
timeout. With a short timeout, we catch faults earlier and are
able to send back a panic. With a 60 second timeout, the user is
unlikely to wait and will instead hit the power button, causing
us to lose the panic info.

This change configures the NMI period to watchdog_thresh and
sets the softlockup_thresh to watchdog_thresh * 2. In addition,
watchdog_thresh was reduced to 10 seconds as suggested by Ingo
Molnar.

Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Cc: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1306127423-3347-4-git-send-email-msb@chromium.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <20110517071642.GF22305@elte.hu>
2011-05-23 11:58:59 +02:00
Suresh Siddha
1a8880a142 x86, apic: Make apic drivers static
Apic probe now looks at the apic drivers listed in the
.apicdrivers section. Remove apic_probe[] and make each apic
driver static.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: gorcunov@openvz.org
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110521005526.341718626@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22 11:48:04 +02:00
Suresh Siddha
69c252ffce x86, apic: Clean up bigsmp apic selection code
Make generic_bigsmp_probe() return struct apic *. This will
avoid exporting apic_bigsmp, which will be consistent with
others.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: gorcunov@openvz.org
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22 11:48:03 +02:00
Suresh Siddha
8b37e88061 x86, apic: Use .apicdrivers section for the apic drivers list
This will eliminate the need for apic_probe[], as the probing
now will happen based on the apic drivers order in the
.apcidrivers section.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: gorcunov@openvz.org
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110521005526.164277071@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22 11:48:03 +02:00
Suresh Siddha
107e0e0cd8 x86, apic: Introduce .apicdrivers section to find the list of apic drivers
This will pave the way for each apic driver to be self-contained
and eliminate the need for apic_probe[].

Order in which apic drivers are listed in the .apicdrivers
section is important, as this determines the apic probe order.
And this is enforced by the ordering of apic driver files in the
Makefile and the macros apic_driver()/apic_drivers().

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: gorcunov@openvz.org
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110521005526.068775085@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22 11:48:03 +02:00
Cyrill Gorcunov
79deb8e511 x86, x2apic: Move the common bits to x2apic.h
To eliminate code duplication.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: steiner@sgi.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110519234637.591426753@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:11 +02:00
Cyrill Gorcunov
9d0fa6c5f4 x86, x2apic: Minimize IPI register writes using cluster groups
In the case of x2apic cluster mode we can group IPI register
writes based on the cluster group instead of individual per-cpu
destination messages.

This reduces the apic register writes and reduces the amount of
IPI messages (in the best case we can reduce it by a factor of
16).

With this change, the cost of flush_tlb_others(), with the flush
tlb IPI being sent from a cpu in the socket-1 to all the logical
cpus in socket-2 (on a Westmere-EX system that has 20 logical
cpus in a socket) is 3x times better now (compared to the former
'send one-by-one' algorithm).

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: steiner@sgi.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110519234637.512271057@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:09 +02:00
Cyrill Gorcunov
a39d1f3f67 x86, x2apic: Track the x2apic cluster sibling map
In the case of x2apic cluster mode, we can group IPI register
writes based on the cluster group instead of individual per-cpu
destination messages.

For this purpose, track the cpu's that belong to the same x2apic
cluster.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: steiner@sgi.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110519234637.421800999@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:08 +02:00
Suresh Siddha
a27d0b5e7d x86, x2apic: Remove duplicate code for IPI mask routines
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110519234637.337024125@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:06 +02:00
Suresh Siddha
9ebd680bd0 x86, apic: Use probe routines to simplify apic selection
Use the unused probe routine in the apic driver to finalize the
apic model selection. This cleans up the
default_setup_apic_routing() and this probe routine in future
can also be used for doing any apic model specific
initialisation.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: steiner@sgi.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/20110519234637.247458931@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:04 +02:00
Suresh Siddha
8f18c9711e x86, ioapic: Consolidate mp_ioapic_routing[] into 'struct ioapic'
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233158.089978277@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:02 +02:00
Suresh Siddha
c040aaeb86 x86, ioapic: Consolidate gsi routing info into 'struct ioapic'
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.994002011@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:41:01 +02:00
Suresh Siddha
d537143084 x86, ioapic: Consolidate mp_ioapics[] into 'struct ioapic'
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.909013179@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:59 +02:00
Suresh Siddha
57a6f74023 x86, ioapic: Consolidate ioapic_saved_data[] into 'struct ioapic'
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.830697056@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:57 +02:00
Suresh Siddha
b69c6c3bec x86, ioapic: Add struct ioapic
Introduce struct ioapic with nr_registers field.

This will pave way for consolidating different MAX_IO_APICS
arrays into it.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: daniel.blueman@gmail.com
Link: http://lkml.kernel.org/r/20110518233157.744315519@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:56 +02:00
Suresh Siddha
15bac20bd8 x86, ioapic: Remove duplicate code for saving/restoring RTEs
Code flow for enabling interrupt-remapping has its own routines
for saving and restoring io-apic RTE's. ioapic suspend/resume
code flow also has similar routines. Remove the duplicate code.

Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110518233157.673130611@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:54 +02:00
Suresh Siddha
31dce14a32 x86, ioapic: Use ioapic_saved_data while enabling intr-remapping
Code flow for enabling interrupt-remapping was
allocating/freeing buffers for saving/restoring io-apic RTE's.
ioapic suspend/resume code uses boot time allocated
ioapic_saved_data that is a perfect match for reuse here.

This will remove the unnecessary allocation/free of the
temporary buffers during suspend/resume of interrupt-remapping
enabled platforms aswell as paving the way for further code
consolidation.

Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110518233157.574469296@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:52 +02:00
Suresh Siddha
4c79185cdb x86, ioapic: Allocate ioapic_saved_data early
This allows re-using this buffer for enabling
interrupt-remapping during boot and resume. And thus allow for
consolidating the code between ioapic suspend/resume and
interrupt-remapping.

Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110518233157.481404505@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:50 +02:00
Daniel J Blueman
b64ce24daf x86, ioapic: Fix potential resume deadlock
Fix a potential deadlock when resuming; here the calling
function has disabled interrupts, so we cannot sleep.

Change the memory allocation flag from GFP_KERNEL to GFP_ATOMIC.

TODO: We can do away with this memory allocation during resume
      by reusing the ioapic suspend/resume code that uses boot time
      allocated buffers, but we want to keep this -stable patch
      simple.

Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: <stable@kernel.org> # v2.6.38/39
Link: http://lkml.kernel.org/r/20110518233157.385970138@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20 13:40:41 +02:00
Linus Torvalds
13588209aa Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86, mm: Allow ZONE_DMA to be configurable
  x86, NUMA: Trim numa meminfo with max_pfn in a separate loop
  x86, NUMA: Rename setup_node_bootmem() to setup_node_data()
  x86, NUMA: Enable emulation on 32bit too
  x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too
  x86, NUMA: Rename amdtopology_64.c to amdtopology.c
  x86, NUMA: Make numa_init_array() static
  x86, NUMA: Make 32bit use common NUMA init path
  x86, NUMA: Initialize and use remap allocator from setup_node_bootmem()
  x86-32, NUMA: Add @start and @end to init_alloc_remap()
  x86, NUMA: Remove long 64bit assumption from numa.c
  x86, NUMA: Enable build of generic NUMA init code on 32bit
  x86, NUMA: Move NUMA init logic from numa_64.c to numa.c
  x86-32, NUMA: Update numaq to use new NUMA init protocol
  x86-32, NUMA: Replace srat_32.c with srat.c
  x86-32, NUMA: implement temporary NUMA init shims
  x86, NUMA: Move numa_nodes_parsed to numa.[hc]
  x86-32, NUMA: Move get_memcfg_numa() into numa_32.c
  x86, NUMA: make srat.c 32bit safe
  x86, NUMA: rename srat_64.c to srat.c
  ...
2011-05-19 18:07:31 -07:00
Linus Torvalds
17b141803c Merge branches 'x86-apic-for-linus', 'x86-asm-for-linus' and 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, apic: Print verbose error interrupt reason on apic=debug

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Demacro CONFIG_PARAVIRT cpu accessors

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix mrst sparse complaints
  x86: Fix spelling error in the memcpy() source code comment
  x86, mpparse: Remove unnecessary variable
2011-05-19 17:49:35 -07:00
Jack Steiner
1d44e8288a x86, UV: Fix NMI handler for UV platforms
This fixes problems seen on UV systems handling NMIs from the
node controller.

I isolated the "dazed..." messages that I saw earlier to a bug in
the BMC on our platform. It was sending NMIs w/o properly setting
a register that indicated the source of NMI.

So rather than _assuming_ any unhandled NMI came from the UV system
maintenance console (SMC), add a check to verify that the SMC actually
sent the NMI.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: gorcunov@gmail.com
Cc: dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-10 09:26:55 +02:00
Tejun Heo
299a180aec x86-32, NUMA: Update numaq to use new NUMA init protocol
Update numaq such that it calls numa_add_memblk() and sets
numa_nodes_parsed instead of directly diddling with NUMA states.  The
original get_memcfg_numaq() is renamed to numaq_numa_init() and new
get_memcfg_numaq() is created in numa_32.c.

The shim numa_add_memblk() implementation handles node_start/end_pfn[]
and node_set_online() for nodes with memory.  The new
get_memcfg_numaq() exactly the same with get_memcfg_from_srat() other
than calling the numaq init function.  Things get_memcfgs_numaq() do
are not strictly necessary for numaq but added for consistency and to
help unifying NUMA init handling.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
2011-05-02 14:18:53 +02:00
Tejun Heo
797390d855 x86-32, NUMA: use sparse_memory_present_with_active_regions()
Instead of calling memory_present() for each region from NUMA init,
call sparse_memory_present_with_active_regions() from paging_init()
similarly to x86-64.

For flat and numaq, this results in exactly the same memory_present()
calls.  For srat, if there are multiple memory chunks for a node,
after this change, memory_present() will be called separately for each
chunk instead of being called once to encompass the whole range, which
doesn't cause any harm and actually is the better behavior.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
2011-05-02 14:18:52 +02:00
Tejun Heo
84914ed0ec x86-32, NUMA: Make apic->x86_32_numa_cpu_node() optional
NUMAQ is the only meaningful user of this callback and
setup_local_APIC() the only callsite.  Stop torturing everyone else by
making the callback optional and removing all the boilerplate
implementations and assignments.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
2011-05-02 14:18:52 +02:00
Tejun Heo
c4b90c1199 x86-32, NUMA: Automatically set apicid -> node in setup_local_APIC()
Some x86-32 NUMA implementations (NUMAQ) don't initialize apicid ->
node mapping using set_apicid_to_node() during NUMA init but implement
custom apic->x86_32_numa_cpu_node() instead.

This patch automatically initializes the default apic -> node mapping
table from apic->x86_32_numa_cpu_node() from setup_local_APIC() such
that the mapping table is in sync with the actual mapping.

As the table isn't used by custom implementations, this doesn't make
any difference at this point.  This is in preparation of unifying
numa_cpu_node() between x86-32 and 64.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
2011-05-02 14:18:52 +02:00
Tejun Heo
ba67cf5cf2 Merge branch 'x86/urgent' into x86-mm
Merge reason: Pick up the following two fix commits.

  2be19102b7: x86, NUMA: Fix empty memblk detection in numa_cleanup_meminfo()
  765af22da8: x86-32, NUMA: Fix ACPI NUMA init broken by recent x86-64 change

Scheduled NUMA init 32/64bit unification changes depend on these.

Signed-off-by: Tejun Heo <tj@kernel.org>
2011-05-02 14:16:47 +02:00
Tejun Heo
aff364860a Merge branch 'x86/numa' into x86-mm
Merge reason: Pick up x86-32 remap allocator cleanup changes - 14
commits, 3fe14ab541^..993ba1585c.

  3fe14ab541: x86-32, numa: Fix failure condition check in alloc_remap()
  993ba1585c: x86-32, numa: Update remap allocator comments

Scheduled NUMA init 32/64bit unification changes depend on them.

Signed-off-by: Tejun Heo <tj@kernel.org>
2011-05-02 14:08:47 +02:00
Sebastian Andrzej Siewior
20443598d9 x86: devicetree: Configure IOAPIC pin only once
We use io_apic_setup_irq_pin() in order to configure pin's interrupt
number polarity and type. This is done on every irq_create_of_mapping()
which happens for instance during pci enable calls. Level typed
interrupts are masked by default, edge are unmasked.

On the first ->xlate() call the level interrupt is configured and
masked. The driver calls request_irq() and the line is unmasked. Lets
assume the interrupt line is shared with another device and we call
pci_enable_device() for this device. The ->xlate() configures the pin
again and it is masked. request_irq() does not unmask the line because
it _is_ already unmasked according to its internal state. So the
interrupt will never be unmasked again.

This patch is based on an earlier work by Torben Hohn and solves the
problem by configuring the pin only once. Since all devices must agree
on the same type and polarity there is no point in configuring the pin
more than once.

[ tglx: Split out the ce4100 part into a separate patch ]

Cc: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/%3C20110427143052.GA15211%40linutronix.de%3E
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-28 11:38:30 +02:00
Youquan Song
2b398bd9f8 x86, apic: Print verbose error interrupt reason on apic=debug
End users worry about the error interrupt printout we generate
currently:

	pr_debug("APIC error on CPU%d: %02x(%02x)\n",
	smp_processor_id(), v , v1);

... and would like to know the reason why error interrupts are generated.

This patch prints out more detailed debug information.

Another practical problem is that dynamic debug is not initialized yet
when the APIC initializes, so the pr_debug() will not output the error
interrupt debug information on bootup. In this patch, we use
apic_printk(APIC_DEBUG, ...), so the apic=debug boot option will print
verbose error interupts during bootup.

Signed-off-by: Youquan Song <youquan.song@intel.com>
Cc: Joe Perches <joe@perches.com>
Cc: hpa@linux.intel.com
Cc: suresh.b.siddha@intel.com
Cc: yong.y.wang@linux.intel.com
Cc: jbaron@redhat.com
Cc: trenn@suse.de
Cc: kent.liu@intel.com
Cc: chaohong.guo@intel.com
Link: http://lkml.kernel.org/r/1302762968-24380-2-git-send-email-youquan.song@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-04-19 19:03:30 +02:00
Tejun Heo
7210cf9217 x86-32, numa: Calculate remap size in common code
Only pgdat and memmap use remap area and there isn't much benefit in
allowing per-node override.  In addition, the use of node_remap_size[]
is confusing in that it contains number of bytes before remap
initialization and then number of pages afterwards.

Move remap size calculation for memap from specific NUMA config
implementations to init_alloc_remap() and make node_remap_size[]
static.

The only behavior difference is that, before this patch, numaq_32
didn't consider max_pfn when calculating the memmap size but it's
enforced after this patch, which is the right thing to do.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1301955840-7246-8-git-send-email-tj@kernel.org
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2011-04-06 17:57:16 -07:00
Cliff Wickman
818987e9a1 x86, UV: Fix kdump reboot
After a crash dump on an SGI Altix UV system the crash kernel
fails to cause a reboot.  EFI mode is disabled in the kdump
kernel, so only the reboot_type of BOOT_ACPI works.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: rja@sgi.com
LKML-Reference: <E1Q5Iuo-00013b-UK@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-03-31 18:44:03 +02:00
Christoph Lameter
349c004e3d x86: A fast way to check capabilities of the current cpu
Add this_cpu_has() which determines if the current cpu has a certain
ability using a segment prefix and a bit test operation.

For that we need to add bit operations to x86s percpu.h.

Many uses of cpu_has use a pointer passed to a function to determine
the current flags. That is no longer necessary after this patch.

However, this patch only converts the straightforward cases where
cpu_has is used with this_cpu_ptr. The rest is work for later.

-tj: Rolled up patch to add x86_ prefix and use percpu_read() instead
     of percpu_read_stable().

Signed-off-by: Christoph Lameter <cl@linux.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2011-03-29 10:18:30 +02:00
Jean Delvare
ca444564a9 x86: Stop including <linux/delay.h> in two asm header files
Stop including <linux/delay.h> in x86 header files which don't
need it. This will let the compiler complain when this header is
not included by source files when it should, so that
contributors can fix the problem before building on other
architectures starts to fail.

Credits go to Geert for the idea.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
LKML-Reference: <20110325152014.297890ec@endymion.delvare>
[ this also fixes an upstream build bug in drivers/media/rc/ite-cir.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-03-29 09:37:42 +02:00
Rafael J. Wysocki
f3c6ea1b06 x86: Use syscore_ops instead of sysdev classes and sysdevs
Some subsystems in the x86 tree need to carry out suspend/resume and
shutdown operations with one CPU on-line and interrupts disabled and
they define sysdev classes and sysdevs or sysdev drivers for this
purpose.  This leads to unnecessarily complicated code and excessive
memory usage, so switch them to using struct syscore_ops objects for
this purpose instead.

Generally, there are three categories of subsystems that use
sysdevs for implementing PM operations: (1) subsystems whose
suspend/resume callbacks ignore their arguments entirely (the
majority), (2) subsystems whose suspend/resume callbacks use their
struct sys_device argument, but don't really need to do that,
because they can be implemented differently in an arguably simpler
way (io_apic.c), and (3) subsystems whose suspend/resume callbacks
use their struct sys_device argument, but the value of that argument
is always the same and could be ignored (microcode_core.c).  In all
of these cases the subsystems in question may be readily converted to
using struct syscore_ops objects for power management and shutdown.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
2011-03-23 22:15:54 +01:00
Linus Torvalds
f2e1fbb5f2 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Flush TLB if PGD entry is changed in i386 PAE mode
  x86, dumpstack: Correct stack dump info when frame pointer is available
  x86: Clean up csum-copy_64.S a bit
  x86: Fix common misspellings
  x86: Fix misspelling and align params
  x86: Use PentiumPro-optimized partial_csum() on VIA C7
2011-03-18 10:45:21 -07:00
Linus Torvalds
e16b396ce3 Merge branch 'for-linus' of 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: (47 commits)
  doc: CONFIG_UNEVICTABLE_LRU doesn't exist anymore
  Update cpuset info & webiste for cgroups
  dcdbas: force SMI to happen when expected
  arch/arm/Kconfig: remove one to many l's in the word.
  asm-generic/user.h: Fix spelling in comment
  drm: fix printk typo 'sracth'
  Remove one to many n's in a word
  Documentation/filesystems/romfs.txt: fixing link to genromfs
  drivers:scsi Change printk typo initate -> initiate
  serial, pch uart: Remove duplicate inclusion of linux/pci.h header
  fs/eventpoll.c: fix spelling
  mm: Fix out-of-date comments which refers non-existent functions
  drm: Fix printk typo 'failled'
  coh901318.c: Change initate to initiate.
  mbox-db5500.c Change initate to initiate.
  edac: correct i82975x error-info reported
  edac: correct i82975x mci initialisation
  edac: correct commented info
  fs: update comments to point correct document
  target: remove duplicate include of target/target_core_device.h from drivers/target/target_core_hba.c
  ...

Trivial conflict in fs/eventpoll.c (spelling vs addition)
2011-03-18 10:37:40 -07:00
Lucas De Marchi
0d2eb44f63 x86: Fix common misspellings
They were generated by 'codespell' and then manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: trivial@kernel.org
LKML-Reference: <1300389856-1099-3-git-send-email-lucas.demarchi@profusion.mobi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-03-18 10:39:30 +01:00
Linus Torvalds
d10902812c Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
  x86: Clean up apic.c and apic.h
  x86: Remove superflous goal definition of tsc_sync
  x86: dt: Correct local apic documentation in device tree bindings
  x86: dt: Cleanup local apic setup
  x86: dt: Fix OLPC=y/INTEL_CE=n build
  rtc: cmos: Add OF bindings
  x86: ce4100: Use OF to setup devices
  x86: ioapic: Add OF bindings for IO_APIC
  x86: dtb: Add generic bus probe
  x86: dtb: Add support for PCI devices backed by dtb nodes
  x86: dtb: Add device tree support for HPET
  x86: dtb: Add early parsing of IO_APIC
  x86: dtb: Add irq domain abstraction
  x86: dtb: Add a device tree for CE4100
  x86: Add device tree support
  x86: e820: Remove conditional early mapping in parse_e820_ext
  x86: OLPC: Make OLPC=n build again
  x86: OLPC: Remove extra OLPC_OPENFIRMWARE_DT indirection
  x86: OLPC: Cleanup config maze completely
  x86: OLPC: Hide OLPC_OPENFIRMWARE config switch
  ...

Fix up conflicts in arch/x86/platform/ce4100/ce4100.c
2011-03-15 20:01:36 -07:00
Linus Torvalds
181f977d13 Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (93 commits)
  x86, tlb, UV: Do small micro-optimization for native_flush_tlb_others()
  x86-64, NUMA: Don't call numa_set_distanc() for all possible node combinations during emulation
  x86-64, NUMA: Don't assume phys node 0 is always online in numa_emulation()
  x86-64, NUMA: Clean up initmem_init()
  x86-64, NUMA: Fix numa_emulation code with node0 without RAM
  x86-64, NUMA: Revert NUMA affine page table allocation
  x86: Work around old gas bug
  x86-64, NUMA: Better explain numa_distance handling
  x86-64, NUMA: Fix distance table handling
  mm: Move early_node_map[] reverse scan helpers under HAVE_MEMBLOCK
  x86-64, NUMA: Fix size of numa_distance array
  x86: Rename e820_table_* to pgt_buf_*
  bootmem: Move __alloc_memory_core_early() to nobootmem.c
  bootmem: Move contig_page_data definition to bootmem.c/nobootmem.c
  bootmem: Separate out CONFIG_NO_BOOTMEM code into nobootmem.c
  x86-64, NUMA: Seperate out numa_alloc_distance() from numa_set_distance()
  x86-64, NUMA: Add proper function comments to global functions
  x86-64, NUMA: Move NUMA emulation into numa_emulation.c
  x86-64, NUMA: Prepare numa_emulation() for moving NUMA emulation into a separate file
  x86-64, NUMA: Do not scan two times for setup_node_bootmem()
  ...

Fix up conflicts in arch/x86/kernel/smpboot.c
2011-03-15 19:49:10 -07:00
Linus Torvalds
5f6fb45466 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: (116 commits)
  x86: Enable forced interrupt threading support
  x86: Mark low level interrupts IRQF_NO_THREAD
  x86: Use generic show_interrupts
  x86: ioapic: Avoid redundant lookup of irq_cfg
  x86: ioapic: Use new move_irq functions
  x86: Use the proper accessors in fixup_irqs()
  x86: ioapic: Use irq_data->state
  x86: ioapic: Simplify irq chip and handler setup
  x86: Cleanup the genirq name space
  genirq: Add chip flag to force mask on suspend
  genirq: Add desc->irq_data accessor
  genirq: Add comments to Kconfig switches
  genirq: Fixup fasteoi handler for oneshot mode
  genirq: Provide forced interrupt threading
  sched: Switch wait_task_inactive to schedule_hrtimeout()
  genirq: Add IRQF_NO_THREAD
  genirq: Allow shared oneshot interrupts
  genirq: Prepare the handling of shared oneshot interrupts
  genirq: Make warning in handle_percpu_event useful
  x86: ioapic: Move trigger defines to io_apic.h
  ...

Fix up trivial(?) conflicts in arch/x86/pci/xen.c due to genirq name
space changes clashing with the Xen cleanups.  The set_irq_msi() had
moved to xen_bind_pirq_msi_to_irq().
2011-03-15 19:23:40 -07:00
Linus Torvalds
3904afb41d Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Combine printk()s in show_regs_common()
  x86: Don't call dump_stack() from arch_trigger_all_cpu_backtrace_handler()
2011-03-15 19:16:00 -07:00