Eric Lee / linux-smarc-t335x-v3.2

03 Aug, 2009

1 commit

  • a42548a18   cputime: Optimize jiffies_to_cputime(1) ... Browse Code »

    For powerpc with CONFIG_VIRT_CPU_ACCOUNTING
    jiffies_to_cputime(1) is not compile time constant and run time
    calculations are quite expensive. To optimize we use
    precomputed value. For all other architectures is is
    preprocessor definition.

    Signed-off-by: Stanislaw Gruszka
    Acked-by: Peter Zijlstra
    Acked-by: Thomas Gleixner
    Cc: Oleg Nesterov
    Cc: Andrew Morton
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Stanislaw Gruszka
     

07 Feb, 2008

1 commit

  • 06b8e878a   taskstats scaled time cleanup ... Browse Code »

    This moves the ability to scale cputime into generic code. This allows us
    to fix the issue in kernel/timer.c (noticed by Balbir) where we could only
    add an unscaled value to the scaled utime/stime.

    This adds a cputime_to_scaled function. As before, the POWERPC version
    does the scaling based on the last SPURR/PURR ratio calculated. The
    generic and s390 (only other arch to implement asm/cputime.h) versions are
    both NOPs.

    Also moves the SPURR and PURR snapshots closer.

    Signed-off-by: Michael Neuling
    Cc: Jay Lan
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael Neuling
     

30 Jun, 2006

1 commit

  • ccb2fe209   [CPUFREQ] Remove slowdown from ondemand sampling path. ... Browse Code »

    Remove slowdown from ondemand sampling path. This reduces the code path length
    in dbs_check_cpu() by half. slowdown was not used by ondemand by default.
    If there are any user level tools that were using this tunable, they
    may report error now.

    Signed-off-by: Alexey Starikovskiy
    Signed-off-by: Venkatesh Pallipadi
    Signed-off-by: Dave Jones

    Venkatesh Pallipadi
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    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!

    Linus Torvalds