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  1. 17 8月, 2012 1 次提交
    • F
      cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING · b952741c
      由 Frederic Weisbecker 提交于 
      S390, ia64 and powerpc all define their own version
of CONFIG_VIRT_CPU_ACCOUNTING. Generalize the config
and its description to a single place to avoid
duplication.
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
      b952741c
  3. 26 7月, 2012 1 次提交
  5. 21 5月, 2012 1 次提交
  7. 08 5月, 2012 1 次提交
  9. 05 5月, 2012 1 次提交
  11. 26 4月, 2012 1 次提交
  13. 09 12月, 2011 2 次提交
    • T
      memblock: Kill early_node_map[] · 0ee332c1
      由 Tejun Heo 提交于 
      Now all ARCH_POPULATES_NODE_MAP archs select HAVE_MEBLOCK_NODE_MAP -
there's no user of early_node_map[] left.  Kill early_node_map[] and
replace ARCH_POPULATES_NODE_MAP with HAVE_MEMBLOCK_NODE_MAP.  Also,
relocate for_each_mem_pfn_range() and helper from mm.h to memblock.h
as page_alloc.c would no longer host an alternative implementation.

This change is ultimately one to one mapping and shouldn't cause any
observable difference; however, after the recent changes, there are
some functions which now would fit memblock.c better than page_alloc.c
and dependency on HAVE_MEMBLOCK_NODE_MAP instead of HAVE_MEMBLOCK
doesn't make much sense on some of them.  Further cleanups for
functions inside HAVE_MEMBLOCK_NODE_MAP in mm.h would be nice.

-v2: Fix compile bug introduced by mis-spelling
 CONFIG_HAVE_MEMBLOCK_NODE_MAP to CONFIG_MEMBLOCK_HAVE_NODE_MAP in
 mmzone.h.  Reported by Stephen Rothwell.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
      0ee332c1
    • T
      ia64: Use HAVE_MEMBLOCK_NODE_MAP · 98e4ae8a
      由 Tejun Heo 提交于 
      ia64 used early_node_map[] just to prime free_area_init_nodes().  Now
memblock can be used for the same purpose and early_node_map[] is
scheduled to be dropped.  Use memblock instead.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
      98e4ae8a
  15. 25 11月, 2011 1 次提交
  17. 02 9月, 2011 1 次提交
  19. 10 8月, 2011 1 次提交
    • T
      [IA64] fix "allnoconfig" build · 88ff9877
      由 Tony Luck 提交于 
      Link errors:
arch/ia64/kernel/built-in.o: In function `arch_setup_dmar_msi':
(.text+0x35972): undefined reference to `dmar_msi_write'
... and more ...

because allnoconfig has CONFIG_DMAR=y due to the "select DMAR"
in arch/ia64/Kconfig under config IA64_GENERIC.

Drop that select, but add CONFIG_DMAR=y to generic_defconfig so
we keep testbuilding the DMAR code.
Signed-off-by: NTony Luck <tony.luck@intel.com>
      88ff9877
  21. 03 8月, 2011 1 次提交
  23. 22 7月, 2011 1 次提交
  25. 21 6月, 2011 1 次提交
    • O
      x86/ia64: intel-iommu: move to drivers/iommu/ · 166e9278
      由 Ohad Ben-Cohen 提交于 
      This should ease finding similarities with different platforms,
with the intention of solving problems once in a generic framework
which everyone can use.

Note: to move intel-iommu.c, the declaration of pci_find_upstream_pcie_bridge()
has to move from drivers/pci/pci.h to include/linux/pci.h. This is handled
in this patch, too.

As suggested, also drop DMAR's EXPERIMENTAL tag while we're at it.

Compile-tested on x86_64.
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>
      166e9278
  27. 14 6月, 2011 1 次提交
  29. 02 6月, 2011 1 次提交
  31. 27 5月, 2011 1 次提交
  33. 31 3月, 2011 1 次提交
  35. 29 3月, 2011 1 次提交
  37. 21 1月, 2011 2 次提交
  39. 02 10月, 2010 1 次提交
  41. 28 9月, 2010 1 次提交
    • T
      [IA64] Stop using the deprecated __do_IRQ() code path · 5d4bff94
      由 Tony Luck 提交于 
      Thomas Gleixner <tglx@linutronix.de> wrote:
>__do_IRQ() has been deprecated after a two years migration phase in
>commit 0e57aa11. Since then another 18 months have gone by ...

Mostly trivial stuff for this. The only tricky part was realizing
that the new handler_*_irq() paths do not use desc->chip->end(irq).
Not a problem for the edge case as the ia64 iosapic routine for
that was nop(). But the "level" case handled interrupt migration
there.  Just use a slightly modified version of the "end" routine
as "unmask" for the level triggered case.
Signed-off-by: NTony Luck <tony.luck@intel.com>
      5d4bff94
  43. 24 9月, 2010 1 次提交
  45. 20 9月, 2010 1 次提交
  47. 10 8月, 2010 1 次提交
  49. 27 7月, 2010 1 次提交
  51. 28 5月, 2010 3 次提交
  53. 19 5月, 2010 1 次提交
  55. 13 3月, 2010 1 次提交
  57. 09 2月, 2010 1 次提交
    • T
      [IA64] Remove COMPAT_IA32 support · 32974ad4
      由 Tony Luck 提交于 
      This has been broken since May 2008 when Al Viro killed altroot support.
Since nobody has complained, it would appear that there are no users of
this code (A plausible theory since the main OSVs that support ia64 prefer
to use the IA32-EL software emulation).
Signed-off-by: NTony Luck <tony.luck@intel.com>
      32974ad4
  59. 02 10月, 2009 1 次提交
    • T
      ia64: convert to dynamic percpu allocator · 52594762
      由 Tejun Heo 提交于 
      Unlike other archs, ia64 reserves space for percpu areas during early
memory initialization.  These areas occupy a contiguous region indexed
by cpu number on contiguous memory model or are grouped by node on
discontiguous memory model.

As allocation and initialization are done by the arch code, all that
setup_per_cpu_areas() needs to do is communicating the determined
layout to the percpu allocator.  This patch implements
setup_per_cpu_areas() for both contig and discontig memory models and
drops HAVE_LEGACY_PER_CPU_AREA.

Please note that for contig model, the allocation itself is modified
only to allocate for possible cpus instead of NR_CPUS.  As dynamic
percpu allocator can handle non-direct mapping, there's no reason to
allocate memory for cpus which aren't possible.
Signed-off-by: NTejun Heo <tj@kernel.org>
Acked-by: NTony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64 <linux-ia64@vger.kernel.org>
      52594762
  61. 25 9月, 2009 1 次提交
    • T
      [IA64] implement ticket locks for Itanium · 2c86963b
      由 Tony Luck 提交于 
      Back in January 2008 Nick Piggin implemented "ticket" spinlocks
for X86 (See commit 314cdbef).

IA64 implementation has a couple of differences because of the
available atomic operations ... e.g. we have no fetchadd2 instruction
that operates on a 16-bit quantity so we make ticket locks use
a 32-bit word for each of the current ticket and now-serving values.

Performance on uncontended locks is about 8% worse than the previous
implementation, but this seems a good trade for determinism in the
contended case. Performance impact on macro-level benchmarks is in
the noise.
Signed-off-by: NTony Luck <tony.luck@intel.com>
      2c86963b
  63. 23 9月, 2009 1 次提交
  65. 27 8月, 2009 1 次提交
  67. 24 6月, 2009 1 次提交
    • T
      percpu: use dynamic percpu allocator as the default percpu allocator · e74e3962
      由 Tejun Heo 提交于 
      This patch makes most !CONFIG_HAVE_SETUP_PER_CPU_AREA archs use
dynamic percpu allocator.  The first chunk is allocated using
embedding helper and 8k is reserved for modules.  This ensures that
the new allocator behaves almost identically to the original allocator
as long as static percpu variables are concerned, so it shouldn't
introduce much breakage.

s390 and alpha use custom SHIFT_PERCPU_PTR() to work around addressing
range limit the addressing model imposes.  Unfortunately, this breaks
if the address is specified using a variable, so for now, the two
archs aren't converted.

The following architectures are affected by this change.

* sh
* arm
* cris
* mips
* sparc(32)
* blackfin
* avr32
* parisc (broken, under investigation)
* m32r
* powerpc(32)

As this change makes the dynamic allocator the default one,
CONFIG_HAVE_DYNAMIC_PER_CPU_AREA is replaced with its invert -
CONFIG_HAVE_LEGACY_PER_CPU_AREA, which is added to yet-to-be converted
archs.  These archs implement their own setup_per_cpu_areas() and the
conversion is not trivial.

* powerpc(64)
* sparc(64)
* ia64
* alpha
* s390

Boot and batch alloc/free tests on x86_32 with debug code (x86_32
doesn't use default first chunk initialization).  Compile tested on
sparc(32), powerpc(32), arm and alpha.

Kyle McMartin reported that this change breaks parisc.  The problem is
still under investigation and he is okay with pushing this patch
forward and fixing parisc later.

[ Impact: use dynamic allocator for most archs w/o custom percpu setup ]
Signed-off-by: NTejun Heo <tj@kernel.org>
Acked-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Reviewed-by: NChristoph Lameter <cl@linux.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Bryan Wu <cooloney@kernel.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
      e74e3962
  69. 19 6月, 2009 1 次提交
  71. 26 2月, 2009 1 次提交