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* [PATCH 0/6] cputime: Fixes and cleanups on steal time accounting
@ 2014-03-06 17:56 Frederic Weisbecker
  2014-03-06 17:56 ` [PATCH 6/6] arch: Remove stub cputime.h headers Frederic Weisbecker
  0 siblings, 1 reply; 11+ messages in thread
From: Frederic Weisbecker @ 2014-03-06 17:56 UTC (permalink / raw)
  To: LKML
  Cc: Frederic Weisbecker, Archs, Ingo Molnar, Marcelo Tosatti,
	Peter Zijlstra, Thomas Gleixner, Huiqingding

Hi,

The main purpose of this set is to fix a bug on full dynticks configs
where steal time accounting appears to be zero in /proc/stat even
after a few seconds of competing guests running busy loops in a same
host CPU. It's not a regression though as it was there since the
beginning with full dynticks.

So patch [4/6] is the most important. The rest is preparatory work
to fix the bug and various cleanups.

Thanks.

---
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	timers/cputime-fix-steal

Frederic Weisbecker (6):
  cputime: Fix nsecs_to_cputime() return type cast
  cputime: Default implementation of nsecs -> cputime conversion
  cputime: Bring cputime -> nsecs conversion
  cputime: Fix jiffies based cputime assumption on steal accounting
  sched: Remove needless round trip nsecs <-> tick conversion of steal
    time
  arch: Remove stub cputime.h headers

 arch/alpha/include/asm/Kbuild         |  1 +
 arch/alpha/include/asm/cputime.h      |  6 ------
 arch/cris/include/asm/Kbuild          |  1 +
 arch/cris/include/asm/cputime.h       |  6 ------
 arch/frv/include/asm/Kbuild           |  1 +
 arch/frv/include/asm/cputime.h        |  6 ------
 arch/m32r/include/asm/Kbuild          |  1 +
 arch/m32r/include/asm/cputime.h       |  6 ------
 arch/microblaze/include/asm/Kbuild    |  1 +
 arch/microblaze/include/asm/cputime.h |  1 -
 arch/mn10300/include/asm/Kbuild       |  1 +
 arch/mn10300/include/asm/cputime.h    |  1 -
 arch/score/include/asm/Kbuild         |  2 +-
 arch/score/include/asm/cputime.h      |  6 ------
 arch/x86/include/asm/Kbuild           |  1 +
 arch/x86/include/asm/cputime.h        |  1 -
 drivers/cpufreq/cpufreq_stats.c       |  2 +-
 drivers/s390/cio/cio.c                |  2 +-
 fs/proc/stat.c                        |  2 +-
 fs/proc/uptime.c                      |  2 +-
 include/asm-generic/cputime_jiffies.h |  4 +++-
 include/asm-generic/cputime_nsecs.h   |  5 ++++-
 include/linux/cputime.h               | 16 ++++++++++++++++
 include/linux/kernel_stat.h           |  2 +-
 include/linux/sched.h                 |  2 +-
 kernel/sched/core.c                   |  6 ------
 kernel/sched/cputime.c                | 11 ++++++-----
 kernel/sched/sched.h                  | 10 ----------
 28 files changed, 43 insertions(+), 63 deletions(-)
 delete mode 100644 arch/alpha/include/asm/cputime.h
 delete mode 100644 arch/cris/include/asm/cputime.h
 delete mode 100644 arch/frv/include/asm/cputime.h
 delete mode 100644 arch/m32r/include/asm/cputime.h
 delete mode 100644 arch/microblaze/include/asm/cputime.h
 delete mode 100644 arch/mn10300/include/asm/cputime.h
 delete mode 100644 arch/score/include/asm/cputime.h
 delete mode 100644 arch/x86/include/asm/cputime.h
 create mode 100644 include/linux/cputime.h

-- 
1.8.3.1

^ permalink raw reply	[flat|nested] 11+ messages in thread
* [GIT PULL] timers updates for 3.15
@ 2014-03-12  2:09 Frederic Weisbecker
  2014-03-12  2:10 ` [PATCH 6/6] arch: Remove stub cputime.h headers Frederic Weisbecker
  0 siblings, 1 reply; 11+ messages in thread
From: Frederic Weisbecker @ 2014-03-12  2:09 UTC (permalink / raw)
  To: Ingo Molnar, Thomas Gleixner
  Cc: LKML, Frederic Weisbecker, Archs, Marcelo Tosatti, Peter Zijlstra,
	Rik van Riel, Huiqingding

Ingo, Thomas,

Please pull the timers/cputime-fix-steal-v2 branch that can be found at:

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
	timers/cputime-fix-steal-v2

It's based on tip:timers/core. The patches are essentially unchanged
since the last version (https://lkml.org/lkml/2014/3/6/376). I only
added a small comment in 4/6 and acks from Rik.

---
The main purpose of this set is to fix a bug on full dynticks configs
where steal time accounting appears to be zero in /proc/stat even
after a few seconds of competing guests running busy loops in a same
host CPU. It's not a regression though as it was there since the
beginning with full dynticks.

So patch [4/6] ("cputime: Fix jiffies based cputime assumption on
steal accounting") is the most important patch of the series. The rest
is mostly preparatory work to fix the bug plus various cleanups.

Thanks,
	Frederic
---

Frederic Weisbecker (6):
      cputime: Fix nsecs_to_cputime() return type cast
      cputime: Default implementation of nsecs -> cputime conversion
      cputime: Bring cputime -> nsecs conversion
      cputime: Fix jiffies based cputime assumption on steal accounting
      sched: Remove needless round trip nsecs <-> tick conversion of steal time
      arch: Remove stub cputime.h headers


 arch/alpha/include/asm/Kbuild         |  1 +
 arch/alpha/include/asm/cputime.h      |  6 ------
 arch/cris/include/asm/Kbuild          |  1 +
 arch/cris/include/asm/cputime.h       |  6 ------
 arch/frv/include/asm/Kbuild           |  1 +
 arch/frv/include/asm/cputime.h        |  6 ------
 arch/m32r/include/asm/Kbuild          |  1 +
 arch/m32r/include/asm/cputime.h       |  6 ------
 arch/microblaze/include/asm/Kbuild    |  1 +
 arch/microblaze/include/asm/cputime.h |  1 -
 arch/mn10300/include/asm/Kbuild       |  1 +
 arch/mn10300/include/asm/cputime.h    |  1 -
 arch/score/include/asm/Kbuild         |  2 +-
 arch/score/include/asm/cputime.h      |  6 ------
 arch/x86/include/asm/Kbuild           |  1 +
 arch/x86/include/asm/cputime.h        |  1 -
 drivers/cpufreq/cpufreq_stats.c       |  2 +-
 drivers/s390/cio/cio.c                |  2 +-
 fs/proc/stat.c                        |  2 +-
 fs/proc/uptime.c                      |  2 +-
 include/asm-generic/cputime_jiffies.h |  4 +++-
 include/asm-generic/cputime_nsecs.h   |  5 ++++-
 include/linux/cputime.h               | 16 ++++++++++++++++
 include/linux/kernel_stat.h           |  2 +-
 include/linux/sched.h                 |  2 +-
 kernel/sched/core.c                   |  6 ------
 kernel/sched/cputime.c                | 16 +++++++++++-----
 kernel/sched/sched.h                  | 10 ----------
 28 files changed, 48 insertions(+), 63 deletions(-)

^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2014-03-12 15:47 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-03-06 17:56 [PATCH 0/6] cputime: Fixes and cleanups on steal time accounting Frederic Weisbecker
2014-03-06 17:56 ` [PATCH 6/6] arch: Remove stub cputime.h headers Frederic Weisbecker
2014-03-06 17:56   ` Frederic Weisbecker
2014-03-06 19:40   ` Rik van Riel
  -- strict thread matches above, loose matches on Subject: below --
2014-03-12  2:09 [GIT PULL] timers updates for 3.15 Frederic Weisbecker
2014-03-12  2:10 ` [PATCH 6/6] arch: Remove stub cputime.h headers Frederic Weisbecker
2014-03-12  2:10   ` Frederic Weisbecker
2014-03-12  9:44   ` Peter Zijlstra
2014-03-12  9:44     ` Peter Zijlstra
2014-03-12 15:23     ` Frederic Weisbecker
2014-03-12 15:26       ` Peter Zijlstra
2014-03-12 15:47         ` Frederic Weisbecker

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