1. 01 Feb, 2013 1 commit
    • Viresh Kumar's avatar
      cpufreq: Simplify __cpufreq_remove_dev() · b8eed8af
      Viresh Kumar authored
      __cpufreq_remove_dev() is called on multiple occasions: cpufreq_driver
      unregister and cpu removals.
      
      Current implementation of this routine is overly complex without much need. If
      the cpu to be removed is the policy->cpu, we remove the policy first and add all
      other cpus again from policy->cpus and then finally call __cpufreq_remove_dev()
      again to remove the cpu to be deleted. Haahhhh..
      
      There exist a simple solution to removal of a cpu:
      - Simply use the old policy structure
      - update its fields like: policy->cpu, etc.
      - notify any users of cpufreq, which depend on changing policy->cpu
      
      Hence this patch, which tries to implement the above theory. It is tested well
      by myself on ARM big.LITTLE TC2 SoC, which has 5 cores (2 A15 and 3 A7). Both
      A15's share same struct policy and all A7's share same policy structure.
      Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
      Tested-by: default avatarShawn Guo <shawn.guo@linaro.org>
      Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
      b8eed8af
  2. 14 Nov, 2012 1 commit
  3. 04 May, 2011 1 commit
    • Dominik Brodowski's avatar
      [CPUFREQ] use dynamic debug instead of custom infrastructure · 2d06d8c4
      Dominik Brodowski authored
      With dynamic debug having gained the capability to report debug messages
      also during the boot process, it offers a far superior interface for
      debug messages than the custom cpufreq infrastructure. As a first step,
      remove the old cpufreq_debug_printk() function and replace it with a call
      to the generic pr_debug() function.
      
      How can dynamic debug be used on cpufreq? You need a kernel which has
      CONFIG_DYNAMIC_DEBUG enabled.
      
      To enabled debugging during runtime, mount debugfs and
      
      $ echo -n 'module cpufreq +p' > /sys/kernel/debug/dynamic_debug/control
      
      for debugging the complete "cpufreq" module. To achieve the same goal during
      boot, append
      
      	ddebug_query="module cpufreq +p"
      
      as a boot parameter to the kernel of your choice.
      
      For more detailled instructions, please see
      Documentation/dynamic-debug-howto.txt
      Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
      Signed-off-by: default avatarDave Jones <davej@redhat.com>
      2d06d8c4
  4. 29 Oct, 2009 1 commit
    • Tejun Heo's avatar
      percpu: make percpu symbols in cpufreq unique · f1625066
      Tejun Heo authored
      This patch updates percpu related symbols in cpufreq such that percpu
      symbols are unique and don't clash with local symbols.  This serves
      two purposes of decreasing the possibility of global percpu symbol
      collision and allowing dropping per_cpu__ prefix from percpu symbols.
      
      * drivers/cpufreq/cpufreq.c: s/policy_cpu/cpufreq_policy_cpu/
      * drivers/cpufreq/freq_table.c: s/show_table/cpufreq_show_table/
      * arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c: s/drv_data/acfreq_data/
        					      s/old_perf/acfreq_old_perf/
      
      Partly based on Rusty Russell's "alloc_percpu: rename percpu vars
      which cause name clashes" patch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      f1625066
  5. 25 Feb, 2009 1 commit
  6. 22 May, 2008 1 commit
  7. 19 May, 2008 1 commit
  8. 07 Feb, 2008 1 commit
  9. 11 Jul, 2007 1 commit
    • Tejun Heo's avatar
      sysfs: kill unnecessary attribute->owner · 7b595756
      Tejun Heo authored
      sysfs is now completely out of driver/module lifetime game.  After
      deletion, a sysfs node doesn't access anything outside sysfs proper,
      so there's no reason to hold onto the attribute owners.  Note that
      often the wrong modules were accounted for as owners leading to
      accessing removed modules.
      
      This patch kills now unnecessary attribute->owner.  Note that with
      this change, userland holding a sysfs node does not prevent the
      backing module from being unloaded.
      
      For more info regarding lifetime rule cleanup, please read the
      following message.
      
        http://article.gmane.org/gmane.linux.kernel/510293
      
      (tweaked by Greg to not delete the field just yet, to make it easier to
      merge things properly.)
      Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
      Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      7b595756
  10. 07 Nov, 2006 1 commit
  11. 30 May, 2006 3 commits
  12. 28 Feb, 2006 1 commit
  13. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4