1. 24 Mar, 2011 1 commit
  2. 22 Mar, 2011 2 commits
  3. 05 Feb, 2011 1 commit
  4. 31 Jan, 2011 1 commit
  5. 25 Jan, 2011 1 commit
    • Tejun Heo's avatar
      percpu: align percpu readmostly subsection to cacheline · 19df0c2f
      Tejun Heo authored
      
      
      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: default avatarTejun Heo <tj@kernel.org>
      Cc: Shaohua Li <shaohua.li@intel.com>
      19df0c2f
  6. 21 Jan, 2011 16 commits
  7. 20 Jan, 2011 1 commit
    • David Rientjes's avatar
      kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT · 6a108a14
      David Rientjes authored
      
      
      The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option
      is used to configure any non-standard kernel with a much larger scope than
      only small devices.
      
      This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes
      references to the option throughout the kernel.  A new CONFIG_EMBEDDED
      option is added that automatically selects CONFIG_EXPERT when enabled and
      can be used in the future to isolate options that should only be
      considered for embedded systems (RISC architectures, SLOB, etc).
      
      Calling the option "EXPERT" more accurately represents its intention: only
      expert users who understand the impact of the configuration changes they
      are making should enable it.
      Reviewed-by: default avatarIngo Molnar <mingo@elte.hu>
      Acked-by: default avatarDavid Woodhouse <david.woodhouse@intel.com>
      Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Greg KH <gregkh@suse.de>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Robin Holt <holt@sgi.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6a108a14
  8. 27 Oct, 2010 2 commits
  9. 26 Oct, 2010 1 commit
  10. 22 Oct, 2010 1 commit
  11. 18 Oct, 2010 1 commit
  12. 15 Oct, 2010 4 commits
  13. 07 Oct, 2010 1 commit
    • David Howells's avatar
      Fix IRQ flag handling naming · df9ee292
      David Howells authored
      
      
      Fix the IRQ flag handling naming.  In linux/irqflags.h under one configuration,
      it maps:
      
      	local_irq_enable() -> raw_local_irq_enable()
      	local_irq_disable() -> raw_local_irq_disable()
      	local_irq_save() -> raw_local_irq_save()
      	...
      
      and under the other configuration, it maps:
      
      	raw_local_irq_enable() -> local_irq_enable()
      	raw_local_irq_disable() -> local_irq_disable()
      	raw_local_irq_save() -> local_irq_save()
      	...
      
      This is quite confusing.  There should be one set of names expected of the
      arch, and this should be wrapped to give another set of names that are expected
      by users of this facility.
      
      Change this to have the arch provide:
      
      	flags = arch_local_save_flags()
      	flags = arch_local_irq_save()
      	arch_local_irq_restore(flags)
      	arch_local_irq_disable()
      	arch_local_irq_enable()
      	arch_irqs_disabled_flags(flags)
      	arch_irqs_disabled()
      	arch_safe_halt()
      
      Then linux/irqflags.h wraps these to provide:
      
      	raw_local_save_flags(flags)
      	raw_local_irq_save(flags)
      	raw_local_irq_restore(flags)
      	raw_local_irq_disable()
      	raw_local_irq_enable()
      	raw_irqs_disabled_flags(flags)
      	raw_irqs_disabled()
      	raw_safe_halt()
      
      with type checking on the flags 'arguments', and then wraps those to provide:
      
      	local_save_flags(flags)
      	local_irq_save(flags)
      	local_irq_restore(flags)
      	local_irq_disable()
      	local_irq_enable()
      	irqs_disabled_flags(flags)
      	irqs_disabled()
      	safe_halt()
      
      with tracing included if enabled.
      
      The arch functions can now all be inline functions rather than some of them
      having to be macros.
      
      Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300]
      Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile]
      Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze]
      Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM]
      Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR]
      Acked-by: Tony Luck <tony.luck@intel.com> [IA-64]
      Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R]
      Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU]
      Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS]
      Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC]
      Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC]
      Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390]
      Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score]
      Acked-by: Matt Fleming <matt@console-pimps.org> [SH]
      Acked-by: David S. Miller <davem@davemloft.net> [Sparc]
      Acked-by: Chris Zankel <chris@zankel.net> [Xtensa]
      Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha]
      Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300]
      Cc: starvik@axis.com [CRIS]
      Cc: jesper.nilsson@axis.com [CRIS]
      Cc: linux-cris-kernel@axis.com
      df9ee292
  14. 24 Sep, 2010 5 commits
  15. 23 Sep, 2010 1 commit
  16. 19 Sep, 2010 1 commit