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  1. 19 Aug, 2008 6 commits
  3. 17 Aug, 2008 5 commits
  5. 16 Aug, 2008 2 commits
  7. 15 Aug, 2008 5 commits
  9. 11 Aug, 2008 3 commits
  11. 24 Jul, 2008 2 commits
  13. 21 Jul, 2008 1 commit
  15. 19 Jul, 2008 1 commit
    • Suresh Siddha's avatar
      x86: APIC: Remove apic_write_around(); use alternatives, merge fix · f586bf7d
      Suresh Siddha authored 
      On Fri, Jul 18, 2008 at 02:03:48PM -0700, Ingo Molnar wrote:
>
> * Yinghai Lu <yhlu.kernel@gmail.com> wrote:
>
> > > git merge tip/x86/x2apic
> > CONFLICT (content): Merge conflict in arch/x86/kernel/Makefile
> > CONFLICT (content): Merge conflict in arch/x86/kernel/paravirt.c
> > CONFLICT (content): Merge conflict in arch/x86/kernel/smpboot.c
> > CONFLICT (content): Merge conflict in arch/x86/kernel/vmi_32.c
> > CONFLICT (content): Merge conflict in arch/x86/xen/enlighten.c
> > CONFLICT (content): Merge conflict in include/asm-x86/apic.h
> > CONFLICT (content): Merge conflict in include/asm-x86/paravirt.h
>
> that's due to the changes in tip/x86/apic and in tip/x86/uv.
>
> ok, i've just merged x86/apic into x86/x2apic and x86/uv as well, and
> pushed out the result.
>
> Note: it's a first raw merge and completely untested. It will now merge
> cleanly into tip/master. There are probably a few details missing.

Ingo, thanks for doing this. While I was testing my merge changes, you posted
yours... anyhow we need this piece, which is missing from your merge.
Signed-off-by: default avatarSuresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      f586bf7d
  17. 18 Jul, 2008 4 commits
    • Suresh Siddha's avatar
      x86: let 32bit use apic_ops too - fix · 9a8f0e6b
      Suresh Siddha authored 
      Fix VMI apic_ops.
Signed-off-by: default avatarSuresh Siddha <suresh.b.siddha@intel.com>
Acked-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      9a8f0e6b
    • Maciej W. Rozycki's avatar
      x86: APIC: Make apic_verbosity unsigned · baa13188
      Maciej W. Rozycki authored 
      As a microoptimisation, make apic_verbosity unsigned.  This will make
apic_printk(APIC_QUIET, ...) expand into just printk(...) with the
surrounding condition and a reference to apic_verbosity removed.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      baa13188
    • Cyrill Gorcunov's avatar
      x86: apic_32 - introduce calibrate_APIC_clock · 836c129d
      Cyrill Gorcunov authored 
      Introduce calibrate_APIC_clock so it could help in further 32/64bit
apic code merging.
Signed-off-by: default avatarCyrill Gorcunov <gorcunov@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: macro@linux-mips.org
Cc: yhlu.kernel@gmail.com
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      836c129d
    • Maciej W. Rozycki's avatar
      x86: APIC: remove apic_write_around(); use alternatives · 593f4a78
      Maciej W. Rozycki authored 
      Use alternatives to select the workaround for the 11AP Pentium erratum
for the affected steppings on the fly rather than build time.  Remove the
X86_GOOD_APIC configuration option and replace all the calls to
apic_write_around() with plain apic_write(), protecting accesses to the
ESR as appropriate due to the 3AP Pentium erratum.  Remove
apic_read_around() and all its invocations altogether as not needed.
Remove apic_write_atomic() and all its implementing backends.  The use of
ASM_OUTPUT2() is not strictly needed for input constraints, but I have
used it for readability's sake.

I had the feeling no one else was brave enough to do it, so I went ahead
and here it is.  Verified by checking the generated assembly and tested
with both a 32-bit and a 64-bit configuration, also with the 11AP
"feature" forced on and verified with gdb on /proc/kcore to work as
expected (as an 11AP machines are quite hard to get hands on these days).
Some script complained about the use of "volatile", but apic_write() needs
it for the same reason and is effectively a replacement for writel(), so I
have disregarded it.

I am not sure what the policy wrt defconfig files is, they are generated
and there is risk of a conflict resulting from an unrelated change, so I
have left changes to them out.  The option will get removed from them at
the next run.

Some testing with machines other than mine will be needed to avoid some
stupid mistake, but despite its volume, the change is not really that
intrusive, so I am fairly confident that because it works for me, it will
everywhere.
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      593f4a78
  19. 12 Jul, 2008 3 commits
  21. 10 Jul, 2008 1 commit
  23. 09 Jul, 2008 1 commit
  25. 08 Jul, 2008 6 commits
    • Yinghai Lu's avatar
      x86: use disable_apic in 32bit · 914bebfa
      Yinghai Lu authored 
      change the enable_local_apic to static force_enable_local_apic for 32bit
Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      914bebfa
    • Yinghai Lu's avatar
      x86: let setup_arch call init_apic_mappings for 32bit · f3294a33
      Yinghai Lu authored 
      instead of calling it from trap_init()

also move init ioapic mapping out of apic_32.c

so 32 bit do same as 64 bit
Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      f3294a33
    • Cyrill Gorcunov's avatar
      x86: nmi_watchdog - use nmi_watchdog variable for printing · 116f570e
      Cyrill Gorcunov authored 
      Since it is possible NMI_ definitions could be changed
one day we better print out real nmi_watchdog value instead
of constant string.
Signed-off-by: default avatarCyrill Gorcunov <gorcunov@gmail.com>
Cc: macro@linux-mips.org
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      116f570e
    • Yinghai Lu's avatar
      x86: check command line when CONFIG_X86_MPPARSE is not set, v2 · 3c999f14
      Yinghai Lu authored 
      if acpi=off, acpi=noirq and pci=noacpi, we need to disable apic.
Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      3c999f14
    • Jack Steiner's avatar
      x86: fix stack overflow for large values of MAX_APICS · b6df1b8b
      Jack Steiner authored 
      physid_mask_of_physid() causes a huge stack (12k) to be created if the
number of APICS is large. Replace physid_mask_of_physid() with a
new function that does not create large stacks. This is a problem only
on large x86_64 systems.

this paves the way to increase MAX_APICS.
Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Cc: mingo@elte.hu
Cc: tglx@linutronix.de
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      b6df1b8b
    • Mike Travis's avatar
      x86: cleanup early per cpu variables/accesses v4 · 23ca4bba
      Mike Travis authored 
        * Introduce a new PER_CPU macro called "EARLY_PER_CPU".  This is
    used by some per_cpu variables that are initialized and accessed
    before there are per_cpu areas allocated.

    ["Early" in respect to per_cpu variables is "earlier than the per_cpu
    areas have been setup".]

    This patchset adds these new macros:

	DEFINE_EARLY_PER_CPU(_type, _name, _initvalue)
	EXPORT_EARLY_PER_CPU_SYMBOL(_name)
	DECLARE_EARLY_PER_CPU(_type, _name)

	early_per_cpu_ptr(_name)
	early_per_cpu_map(_name, _idx)
	early_per_cpu(_name, _cpu)

    The DEFINE macro defines the per_cpu variable as well as the early
    map and pointer.  It also initializes the per_cpu variable and map
    elements to "_initvalue".  The early_* macros provide access to
    the initial map (usually setup during system init) and the early
    pointer.  This pointer is initialized to point to the early map
    but is then NULL'ed when the actual per_cpu areas are setup.  After
    that the per_cpu variable is the correct access to the variable.

    The early_per_cpu() macro is not very efficient but does show how to
    access the variable if you have a function that can be called both
    "early" and "late".  It tests the early ptr to be NULL, and if not
    then it's still valid.  Otherwise, the per_cpu variable is used
    instead:

	#define early_per_cpu(_name, _cpu) 			\
		(early_per_cpu_ptr(_name) ?			\
			early_per_cpu_ptr(_name)[_cpu] :	\
			per_cpu(_name, _cpu))

    A better method is to actually check the pointer manually.  In the
    case below, numa_set_node can be called both "early" and "late":

	void __cpuinit numa_set_node(int cpu, int node)
	{
	    int *cpu_to_node_map = early_per_cpu_ptr(x86_cpu_to_node_map);

	    if (cpu_to_node_map)
		    cpu_to_node_map[cpu] = node;
	    else
		    per_cpu(x86_cpu_to_node_map, cpu) = node;
	}

  * Add a flag "arch_provides_topology_pointers" that indicates pointers
    to topology cpumask_t maps are available.  Otherwise, use the function
    returning the cpumask_t value.  This is useful if cpumask_t set size
    is very large to avoid copying data on to/off of the stack.

  * The coverage of CONFIG_DEBUG_PER_CPU_MAPS has been increased while
    the non-debug case has been optimized a bit.

  * Remove an unreferenced compiler warning in drivers/base/topology.c

  * Clean up #ifdef in setup.c

For inclusion into sched-devel/latest tree.

Based on:
	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
    +   sched-devel/latest  .../mingo/linux-2.6-sched-devel.git
Signed-off-by: default avatarMike Travis <travis@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      23ca4bba