1. 27 Jun, 2013 1 commit
  2. 29 Mar, 2013 1 commit
  3. 03 Jan, 2013 1 commit
  4. 09 Sep, 2012 1 commit
    • Andre Przywara's avatar
      acpi-cpufreq: Add support for disabling dynamic overclocking · 615b7300
      Andre Przywara authored
      One feature present in powernow-k8 that isn't present in acpi-cpufreq
      is support for enabling or disabling AMD's core performance boost
      technology. This patch adds support to acpi-cpufreq, but also
      includes support for Intel's dynamic acceleration.
      The original boost disabling sysfs file was per CPU, but acted
      globally. Also the naming (cpb) was at least not intuitive.
      So lets introduce a single file simply called "boost", which sits
      once in /sys/devices/system/cpu/cpufreq.
      This should be the only way of using this feature, so add
      documentation about the rationale and the usage.
      A following patch will re-introduce the cpb knob for compatibility
      reasons on AMD CPUs.
      Per-CPU boost switching is possible, but not trivial and is thus
      postponed to a later patch series.
      Signed-off-by: default avatarAndre Przywara <andre.przywara@amd.com>
      Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
  5. 17 May, 2012 1 commit
    • Peter Zijlstra's avatar
      sched: Remove stale power aware scheduling remnants and dysfunctional knobs · 8e7fbcbc
      Peter Zijlstra authored
      It's been broken forever (i.e. it's not scheduling in a power
      aware fashion), as reported by Suresh and others sending
      patches, and nobody cares enough to fix it properly ...
      so remove it to make space free for something better.
      There's various problems with the code as it stands today, first
      and foremost the user interface which is bound to topology
      levels and has multiple values per level. This results in a
      state explosion which the administrator or distro needs to
      master and almost nobody does.
      Furthermore large configuration state spaces aren't good, it
      means the thing doesn't just work right because it's either
      under so many impossibe to meet constraints, or even if
      there's an achievable state workloads have to be aware of
      it precisely and can never meet it for dynamic workloads.
      So pushing this kind of decision to user-space was a bad idea
      even with a single knob - it's exponentially worse with knobs
      on every node of the topology.
      There is a proposal to replace the user interface with a single
      3 state knob:
       sched_balance_policy := { performance, power, auto }
      where 'auto' would be the preferred default which looks at things
      like Battery/AC mode and possible cpufreq state or whatever the hw
      exposes to show us power use expectations - but there's been no
      progress on it in the past many months.
      Aside from that, the actual implementation of the various knobs
      is known to be broken. There have been sporadic attempts at
      fixing things but these always stop short of reaching a mergable
      Therefore this wholesale removal with the hopes of spurring
      people who care to come forward once again and work on a
      coherent replacement.
      Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Suresh Siddha <suresh.b.siddha@intel.com>
      Cc: Arjan van de Ven <arjan@linux.intel.com>
      Cc: Vincent Guittot <vincent.guittot@linaro.org>
      Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Link: http://lkml.kernel.org/r/1326104915.2442.53.camel@twins
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
  6. 16 May, 2011 1 commit
  7. 04 Aug, 2010 1 commit
    • Justin P. Mattock's avatar
      Documentation: update broken web addresses. · 0ea6e611
      Justin P. Mattock authored
      Below you will find an updated version from the original series bunching all patches into one big patch
      updating broken web addresses that are located in Documentation/*
      Some of the addresses date as far far back as 1995 etc... so searching became a bit difficult,
      the best way to deal with these is to use web.archive.org to locate these addresses that are outdated.
      Now there are also some addresses pointing to .spec files some are located, but some(after searching
      on the companies site)where still no where to be found. In this case I just changed the address
      to the company site this way the users can contact the company and they can locate them for the users.
      Signed-off-by: default avatarJustin P. Mattock <justinmattock@gmail.com>
      Signed-off-by: default avatarThomas Weber <weber@corscience.de>
      Signed-off-by: default avatarMike Frysinger <vapier.adi@gmail.com>
      Cc: Paulo Marques <pmarques@grupopie.com>
      Cc: Randy Dunlap <rdunlap@xenotime.net>
      Cc: Michael Neuling <mikey@neuling.org>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
  8. 15 Dec, 2009 1 commit
  9. 09 Dec, 2009 1 commit
    • Nathan Fontenot's avatar
      sysfs/cpu: Add probe/release files · 12633e80
      Nathan Fontenot authored
      Version 3 of this patch is updated with documentation added to
      Documentation/ABI.  There are no changes to any of the C code from v2
      of the patch.
      In order to support kernel DLPAR of CPU resources we need to provide an
      interface to add (probe) and remove (release) the resource from the system.
      This patch Creates new generic probe and release sysfs files to facilitate
      cpu probe/release.  The probe/release interface provides for allowing each
      arch to supply their own routines for implementing the backend of adding
      and removing cpus to/from the system.
      This also creates the powerpc specific stubs to handle the arch callouts
      from writes to the sysfs files.
      The creation and use of these files is regulated by the
      CONFIG_ARCH_CPU_PROBE_RELEASE option so that only architectures that need the
      capability will have the files created.
      Signed-off-by: default avatarNathan Fontenot <nfont@austin.ibm.com>
      Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
  10. 24 Nov, 2009 1 commit
  11. 30 Oct, 2009 7 commits
  12. 10 Apr, 2009 1 commit