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    Subject[PATCH 22/25] irq: make irqs in kernel stat use per_cpu_dyn_array
    Date
    Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
    ---
    include/linux/kernel_stat.h | 4 ++++
    kernel/sched.c | 5 ++++-
    2 files changed, 8 insertions(+), 1 deletions(-)

    diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
    index cf9f40a..fe1f7fe 100644
    --- a/include/linux/kernel_stat.h
    +++ b/include/linux/kernel_stat.h
    @@ -28,7 +28,11 @@ struct cpu_usage_stat {

    struct kernel_stat {
    struct cpu_usage_stat cpustat;
    +#ifdef CONFIG_HAVE_DYN_ARRAY
    + unsigned int *irqs;
    +#else
    unsigned int irqs[NR_IRQS];
    +#endif
    };

    DECLARE_PER_CPU(struct kernel_stat, kstat);
    diff --git a/kernel/sched.c b/kernel/sched.c
    index 55cb4ce..21c0839 100644
    --- a/kernel/sched.c
    +++ b/kernel/sched.c
    @@ -4021,9 +4021,12 @@ static inline void idle_balance(int cpu, struct rq *rq)
    #endif

    DEFINE_PER_CPU(struct kernel_stat, kstat);
    -
    EXPORT_PER_CPU_SYMBOL(kstat);

    +#ifdef CONFIG_HAVE_DYN_ARRAY
    +DEFINE_PER_CPU_DYN_ARRAY_ADDR(per_cpu__kstat_irqs, per_cpu__kstat.irqs, sizeof(unsigned int), nr_irqs, sizeof(unsigned long), NULL);
    +#endif
    +
    /*
    * Return p->sum_exec_runtime plus any more ns on the sched_clock
    * that have not yet been banked in case the task is currently running.
    --
    1.5.4.5


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