13 Sep, 2011

1 commit

• 740969f91   locking, lib/proportions: Annotate prop_local_percpu::lock as raw ... Browse Code »

  The prop_local_percpu::lock can be taken in atomic context and therefore
  cannot be preempted on -rt - annotate it.

  In mainline this change documents the low level nature of
  the lock - otherwise there's no functional difference. Lockdep
  and Sparse checking will work as usual.

  Signed-off-by: Thomas Gleixner
  Signed-off-by: Ingo Molnar

  Thomas Gleixner

  2011-09-13 17:11:50 +0800  

15 Aug, 2008

1 commit

• 3fb669dd6   reorder struct prop_local_single to remove padding on 64 bit builds ... Browse Code »

  reorder structure to remove 8 bytes of padding on 64 bit builds

  (also removes 8 bytes from task_struct)

  Signed-off-by: Richard Kennedy
  Cc: peterz@infradead.org
  Signed-off-by: Ingo Molnar

  Richard Kennedy

  2008-08-15 23:15:23 +0800  

30 Apr, 2008

1 commit

• a42dde041   mm: bdi: allow setting a maximum for the bdi dirty limit ... Browse Code »

  Add "max_ratio" to /sys/class/bdi. This indicates the maximum percentage of
  the global dirty threshold allocated to this bdi.

  [mszeredi@suse.cz]

  - fix parsing in max_ratio_store().
  - export bdi_set_max_ratio() to modules
  - limit bdi_dirty with bdi->max_ratio
  - document new sysfs attribute

  Signed-off-by: Peter Zijlstra
  Signed-off-by: Miklos Szeredi
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Peter Zijlstra

  2008-04-30 23:29:50 +0800  

17 Oct, 2007

1 commit

• 145ca25eb   lib: floating proportions ... Browse Code »

  Given a set of objects, floating proportions aims to efficiently give the
  proportional 'activity' of a single item as compared to the whole set. Where
  'activity' is a measure of a temporal property of the items.

  It is efficient in that it need not inspect any other items of the set
  in order to provide the answer. It is not even needed to know how many
  other items there are.

  It has one parameter, and that is the period of 'time' over which the
  'activity' is measured.

  Signed-off-by: Peter Zijlstra
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Peter Zijlstra

  2007-10-17 23:42:45 +0800