lkml.org 
[lkml]   [2012]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[RFC PATCH 0/5] cputime: Generic virtual based cputime accounting
    Date
    So,

    This is a proposition to handle the cputime accounting without the
    tick to prepare for stopping the tick further idle.

    I have managed to reuse and generalize the kernel/user boundary
    hooks used by RCU. This way we can minimize the changes in archs
    that don't support virtual cputime and we can also switch between
    vtime and tick based accounting to minimize the overhead depending
    on the tick behaviour.

    This is based on top of rcu/idle branch in Paul's tree and my
    vtime consolidation series: https://lkml.org/lkml/2012/6/20/762
    (still waiting to be picked btw).

    You, adventurer, can pull from:

    git://github.com/fweisbec/linux-dynticks.git
    vtime/generic


    Frederic Weisbecker (5):
    user_hooks: New user hooks subsystem
    cputime: Don't allow virtual and irq finegrained cputime accounting
    simultaneously
    cputime: Allow dynamic switch between tick/virtual based cputime
    accounting
    cputime: Rename account_system_vtime to account_vtime
    cputime: Generic on-demand virtual cputime accounting

    arch/Kconfig | 10 +-
    arch/ia64/include/asm/cputime.h | 5 +
    arch/ia64/kernel/time.c | 6 +-
    arch/powerpc/include/asm/cputime.h | 5 +
    arch/powerpc/kernel/time.c | 10 +-
    arch/s390/include/asm/cputime.h | 5 +
    arch/s390/kernel/vtime.c | 6 +-
    arch/x86/Kconfig | 2 +-
    arch/x86/include/asm/{rcu.h => user_hooks.h} | 12 +-
    arch/x86/kernel/ptrace.c | 6 +-
    arch/x86/kernel/signal.c | 5 +-
    arch/x86/kernel/traps.c | 2 +-
    arch/x86/mm/fault.c | 2 +-
    include/asm-generic/cputime.h | 7 +
    include/linux/hardirq.h | 8 +-
    include/linux/kernel_stat.h | 13 ++
    include/linux/kvm_host.h | 4 +-
    include/linux/rcupdate.h | 2 -
    include/linux/sched.h | 13 +--
    include/linux/user_hooks.h | 36 ++++++
    init/Kconfig | 35 ++++--
    kernel/Makefile | 1 +
    kernel/fork.c | 3 +-
    kernel/rcutree.c | 42 +-------
    kernel/sched/core.c | 9 +-
    kernel/sched/cputime.c | 159 +++++++++++++++++++++----
    kernel/softirq.c | 6 +-
    kernel/time/tick-sched.c | 28 ++---
    kernel/user_hooks.c | 56 +++++++++
    29 files changed, 348 insertions(+), 150 deletions(-)
    rename arch/x86/include/asm/{rcu.h => user_hooks.h} (56%)
    create mode 100644 include/linux/user_hooks.h
    create mode 100644 kernel/user_hooks.c

    --
    1.7.5.4



    \
     
     \ /
      Last update: 2012-07-27 18:41    [W:0.028 / U:0.744 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site