21 Mar, 2016

1 commit

• 73e6aafd9   sched/cpuacct: Simplify the cpuacct code ... Browse Code »

  - Use for() instead of while() loop in some functions
  to make the code simpler.

  - Use this_cpu_ptr() instead of per_cpu_ptr() to make the code
  cleaner and a bit faster.

  Suggested-by: Peter Zijlstra
  Signed-off-by: Zhao Lei
  Signed-off-by: Peter Zijlstra (Intel)
  Cc: Linus Torvalds
  Cc: Tejun Heo
  Cc: Thomas Gleixner
  Link: http://lkml.kernel.org/r/d8a7ef9592f55224630cb26dea239f05b6398a4e.1458187654.git.zhaolei@cn.fujitsu.com
  Signed-off-by: Ingo Molnar

  Zhao Lei

  2016-03-21 18:00:28 +0800  

10 Apr, 2013

7 commits

• 14c6d3c8a   sched/cpuacct: Initialize root cpuacct earlier ... Browse Code »

  Now we don't need cpuacct_init(), and instead we just initialize
  root_cpuacct when it's defined.

  Signed-off-by: Li Zefan
  Cc: Tejun Heo
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/51553834.9090701@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:20 +0800  
• d1712796a   sched/cpuacct: Clean up cpuacct.h ... Browse Code »

  Now most of the code in cpuacct.h can be moved to cpuacct.c

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/515536D5.2080401@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:19 +0800  
• 5f40d8043   sched/cpuacct: Remove redundant NULL checks in cpuacct_acount_field() ... Browse Code »

  This is a micro optimazation for a hot path.

  - We don't need to check if @ca returned from task_ca() is NULL.
  - We don't need to check if @ca returned from parent_ca() is NULL.

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/515536B7.6060602@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:18 +0800  
• 543bc0e76   sched/cpuacct: Remove redundant NULL checks in cpuacct_charge() ... Browse Code »

  This is a micro optimization for the hot path.

  - We don't need to check if @ca is NULL in parent_ca().
  - We don't need to check if @ca is NULL in the beginning of the for loop.

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/515536A9.5000700@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:18 +0800  
• 1966aaf7d   sched/cpuacct: Add cpuacct_acount_field() ... Browse Code »

  So we can remove open-coded cpuacct code in cputime.c.

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/51553692.9060008@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:17 +0800  
• dbe4b41f9   sched/cpuacct: Add cpuacct_init() ... Browse Code »

  So we don't open-coded initialization of cpuacct in core.c.

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/51553687.1060906@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:16 +0800  
• 60fed7891   sched: Split cpuacct code out of sched.h ... Browse Code »

  Add cpuacct.h and let sched.h include it.

  Signed-off-by: Li Zefan
  Acked-by: Peter Zijlstra
  Link: http://lkml.kernel.org/r/5155367B.2060506@huawei.com
  Signed-off-by: Ingo Molnar

  Li Zefan

  2013-04-10 19:54:16 +0800