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  1. 20 5月, 2011 11 次提交
  3. 10 5月, 2011 1 次提交
    • J
      x86, UV: Fix NMI handler for UV platforms · 1d44e828
      由 Jack Steiner 提交于 
      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: NJack Steiner <steiner@sgi.com>
Cc: gorcunov@gmail.com
Cc: dzickus@redhat.com
Signed-off-by: NIngo Molnar <mingo@elte.hu>
      1d44e828
  5. 02 5月, 2011 4 次提交
    • T
      x86-32, NUMA: Update numaq to use new NUMA init protocol · 299a180a
      由 Tejun Heo 提交于 
      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: NTejun 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>
      299a180a
    • T
      x86-32, NUMA: use sparse_memory_present_with_active_regions() · 797390d8
      由 Tejun Heo 提交于 
      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: NTejun 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>
      797390d8
    • T
      x86-32, NUMA: Make apic->x86_32_numa_cpu_node() optional · 84914ed0
      由 Tejun Heo 提交于 
      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: NTejun 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>
      84914ed0
    • T
      x86-32, NUMA: Automatically set apicid -> node in setup_local_APIC() · c4b90c11
      由 Tejun Heo 提交于 
      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: NTejun 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>
      c4b90c11
  7. 28 4月, 2011 1 次提交
    • S
      x86: devicetree: Configure IOAPIC pin only once · 20443598
      由 Sebastian Andrzej Siewior 提交于 
      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: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/%3C20110427143052.GA15211%40linutronix.de%3ESigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      20443598
  9. 20 4月, 2011 1 次提交
    • Y
      x86, apic: Print verbose error interrupt reason on apic=debug · 2b398bd9
      由 Youquan Song 提交于 
      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: NYouquan 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.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
      2b398bd9
  11. 07 4月, 2011 1 次提交
  13. 01 4月, 2011 1 次提交
  15. 29 3月, 2011 2 次提交
    • C
      x86: A fast way to check capabilities of the current cpu · 349c004e
      由 Christoph Lameter 提交于 
      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: NChristoph Lameter <cl@linux.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NTejun Heo <tj@kernel.org>
      349c004e
    • J
      x86: Stop including <linux/delay.h> in two asm header files · ca444564
      由 Jean Delvare 提交于 
      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: NJean 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: NIngo Molnar <mingo@elte.hu>
      ca444564
  17. 24 3月, 2011 1 次提交
    • R
      x86: Use syscore_ops instead of sysdev classes and sysdevs · f3c6ea1b
      由 Rafael J. Wysocki 提交于 
      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: NRafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NIngo Molnar <mingo@elte.hu>
      f3c6ea1b
  19. 18 3月, 2011 1 次提交
  21. 12 3月, 2011 5 次提交
  23. 11 3月, 2011 1 次提交
  25. 25 2月, 2011 1 次提交
    • T
      x86: dt: Cleanup local apic setup · a906fdaa
      由 Thomas Gleixner 提交于 
      Up to now we force enable the local apic in the devicetree setup
uncoditionally and set smp_found_config unconditionally to 1 when a
devicetree blob is available. This breaks, when local apic is disabled
in the Kconfig.

Make it consistent by initializing device tree explicitely before
smp_get_config() so a non lapic configuration could be used as well.
To be functional that would require to implement PIT as an interrupt
host, but the only user of this code until now is ce4100 which
requires apics to be available. So we leave this up to those who need
it.
Tested-by: NSebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      a906fdaa
  27. 24 2月, 2011 9 次提交