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    SubjectRe: [PATCH 2/5] Add nsecs_to_cputime64 interface for asm-generic -v2
    On Tue, 21 Dec 2010 17:09:01 -0800
    Venkatesh Pallipadi <venki@google.com> wrote:

    > Add nsecs_to_cputime64 interface. This is used in following patches that
    > updates cpu irq stat based on ns granularity info in IRQ_TIME_ACCOUNTING.
    >
    > Tested-by: Shaun Ruffell <sruffell@digium.com>
    > Signed-off-by: Venkatesh Pallipadi <venki@google.com>
    > ---
    > include/asm-generic/cputime.h | 3 +++
    > include/linux/jiffies.h | 1 +
    > kernel/time.c | 23 +++++++++++++++++++++--
    > 3 files changed, 25 insertions(+), 2 deletions(-)
    >
    > diff --git a/include/asm-generic/cputime.h b/include/asm-generic/cputime.h
    > index 2bcc5c7..61e03dd 100644
    > --- a/include/asm-generic/cputime.h
    > +++ b/include/asm-generic/cputime.h
    > @@ -30,6 +30,9 @@ typedef u64 cputime64_t;
    > #define cputime64_to_jiffies64(__ct) (__ct)
    > #define jiffies64_to_cputime64(__jif) (__jif)
    > #define cputime_to_cputime64(__ct) ((u64) __ct)
    > +#define cputime64_gt(__a, __b) ((__a) > (__b))
    > +
    > +#define nsecs_to_cputime64(__ct) nsecs_to_jiffies64(__ct)
    >
    >
    > /*

    If you define a new cputime primitive it is not enough to add it to the
    generic cputime header. You have to add it to the arch-specific cputime
    header for ia64, powerpc and s390 as well. Otherwise the build will
    break with CONFIG_VIRT_CPU_ACCOUNTING=y on these architectures once the
    new primitive is used.

    --
    blue skies,
    Martin.

    "Reality continues to ruin my life." - Calvin.



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