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  1. 05 6月, 2012 1 次提交
  3. 02 6月, 2012 6 次提交
  5. 24 5月, 2012 1 次提交
  7. 22 5月, 2012 3 次提交
  9. 17 5月, 2012 1 次提交
    • S
      fork: move the real prepare_to_copy() users to arch_dup_task_struct() · 55ccf3fe
      由 Suresh Siddha 提交于 
      Historical prepare_to_copy() is mostly a no-op, duplicated for majority of
the architectures and the rest following the x86 model of flushing the extended
register state like fpu there.

Remove it and use the arch_dup_task_struct() instead.
Suggested-by: NOleg Nesterov <oleg@redhat.com>
Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1336692811-30576-1-git-send-email-suresh.b.siddha@intel.comAcked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
      55ccf3fe
  11. 05 5月, 2012 1 次提交
  13. 24 4月, 2012 1 次提交
  15. 29 3月, 2012 1 次提交
  17. 22 3月, 2012 4 次提交
  19. 01 3月, 2012 1 次提交
  21. 24 2月, 2012 1 次提交
  23. 18 1月, 2012 1 次提交
  25. 07 1月, 2012 2 次提交
    • B
      xtensa/PCI: convert to pci_scan_root_bus() for correct root bus resources · 7ec303a7
      由 Bjorn Helgaas 提交于 
      Convert from pci_scan_bus() to pci_scan_root_bus() and remove root bus
fixups.  This fixes the problem of "early" and "header" quirks
seeing incorrect root bus resources.

This arch was unusual because it filled in bus->resource[0..3] in
pcibios_init(), then overwrote them, applied io_space.offset and
checked for unset resources in pcibios_fixup_bus().  I moved all of
that to a new pci_controller_apertures() that we can use before
scanning the root bus.

CC: Chris Zankel <chris@zankel.net>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      7ec303a7
    • M
      PCI: Xtensa: convert pcibios_set_master() to a non-inlined function · 9cdce18d
      由 Myron Stowe 提交于 
      This patch converts Xtensa's architecture-specific
'pcibios_set_master()' routine to a non-inlined function.  This will
allow follow on patches to create a generic 'pcibios_set_master()'
function using the '__weak' attribute which can be used by all
architectures as a default which, if necessary, can then be over-
ridden by architecture-specific code.

Converting 'pci_bios_set_master()' to a non-inlined function will
allow Xtensa's 'pcibios_set_master()' implementation to remain
architecture-specific after the generic version is introduced and
thus, not change current behavior.

No functional change.
Signed-off-by: NMyron Stowe <myron.stowe@redhat.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      9cdce18d
  27. 22 11月, 2011 1 次提交
  29. 27 7月, 2011 1 次提交
  31. 26 7月, 2011 1 次提交
  33. 24 7月, 2011 1 次提交
  35. 20 4月, 2011 1 次提交
  37. 31 3月, 2011 1 次提交
  39. 25 3月, 2011 4 次提交
    • T
      xtensa: Use generic show_interrupts() · 47a5d9dc
      由 Thomas Gleixner 提交于 
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      47a5d9dc
    • T
      xtensa: Convert genirq namespace · 610e1756
      由 Thomas Gleixner 提交于 
      Scripted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      610e1756
    • T
      xtensa: Convert main irq_chip to new functions · 495e0c79
      由 Thomas Gleixner 提交于 
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Chris Zankel <chris@zankel.net>
LKML-Reference: <20110206211137.653005586@linutronix.de>
      495e0c79
    • T
      percpu: Always align percpu output section to PAGE_SIZE · 0415b00d
      由 Tejun Heo 提交于 
      Percpu allocator honors alignment request upto PAGE_SIZE and both the
percpu addresses in the percpu address space and the translated kernel
addresses should be aligned accordingly.  The calculation of the
former depends on the alignment of percpu output section in the kernel
image.

The linker script macros PERCPU_VADDR() and PERCPU() are used to
define this output section and the latter takes @align parameter.
Several architectures are using @align smaller than PAGE_SIZE breaking
percpu memory alignment.

This patch removes @align parameter from PERCPU(), renames it to
PERCPU_SECTION() and makes it always align to PAGE_SIZE.  While at it,
add PCPU_SETUP_BUG_ON() checks such that alignment problems are
reliably detected and remove percpu alignment comment recently added
in workqueue.c as the condition would trigger BUG way before reaching
there.

For um, this patch raises the alignment of percpu area.  As the area
is in .init, there shouldn't be any noticeable difference.

This problem was discovered by David Howells while debugging boot
failure on mn10300.
Signed-off-by: NTejun Heo <tj@kernel.org>
Acked-by: NMike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Cc: David Howells <dhowells@redhat.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
      0415b00d
  41. 31 1月, 2011 1 次提交
  43. 25 1月, 2011 1 次提交
    • T
      percpu: align percpu readmostly subsection to cacheline · 19df0c2f
      由 Tejun Heo 提交于 
      Currently percpu readmostly subsection may share cachelines with other
percpu subsections which may result in unnecessary cacheline bounce
and performance degradation.

This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
linker macros, makes each arch linker scripts specify its cacheline
size and use it to align percpu subsections.

This is based on Shaohua's x86 only patch.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Shaohua Li <shaohua.li@intel.com>
      19df0c2f
  45. 28 10月, 2010 2 次提交
  47. 24 9月, 2010 1 次提交
  49. 18 8月, 2010 1 次提交
    • D
      Make do_execve() take a const filename pointer · d7627467
      由 David Howells 提交于 
      Make do_execve() take a const filename pointer so that kernel_execve() compiles
correctly on ARM:

arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type

This also requires the argv and envp arguments to be consted twice, once for
the pointer array and once for the strings the array points to.  This is
because do_execve() passes a pointer to the filename (now const) to
copy_strings_kernel().  A simpler alternative would be to cast the filename
pointer in do_execve() when it's passed to copy_strings_kernel().

do_execve() may not change any of the strings it is passed as part of the argv
or envp lists as they are some of them in .rodata, so marking these strings as
const should be fine.

Further kernel_execve() and sys_execve() need to be changed to match.

This has been test built on x86_64, frv, arm and mips.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Tested-by: NRalf Baechle <ralf@linux-mips.org>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d7627467