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    Subject[RFC][Patch 12/18] sched: Update update_sd_lb_stats() to use u64
    Date
    Update update_sd_lb_stats() and helper functions to use u64/s64 for weight
    calculations.

    Signed-off-by: Nikhil Rao <ncrao@google.com>
    ---
    kernel/sched_fair.c | 22 +++++++++++-----------
    1 files changed, 11 insertions(+), 11 deletions(-)

    diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
    index d5b1276..12b25b7 100644
    --- a/kernel/sched_fair.c
    +++ b/kernel/sched_fair.c
    @@ -2308,23 +2308,23 @@ static int move_tasks(struct rq *this_rq, int this_cpu, struct rq *busiest,
    * during load balancing.
    */
    struct sd_lb_stats {
    - struct sched_group *busiest; /* Busiest group in this sd */
    - struct sched_group *this; /* Local group in this sd */
    - unsigned long total_load; /* Total load of all groups in sd */
    - unsigned long total_pwr; /* Total power of all groups in sd */
    - unsigned long avg_load; /* Average load across all groups in sd */
    + struct sched_group *busiest; /* Busiest group in this sd */
    + struct sched_group *this; /* Local group in this sd */
    + u64 total_load; /* Total load of all groups in sd */
    + unsigned long total_pwr; /* Total power of all groups in sd */
    + u64 avg_load; /* Avg load across all groups in sd */

    /** Statistics of this group */
    - unsigned long this_load;
    - unsigned long this_load_per_task;
    + u64 this_load;
    + u64 this_load_per_task;
    unsigned long this_nr_running;
    unsigned long this_has_capacity;
    unsigned int this_idle_cpus;

    /* Statistics of the busiest group */
    unsigned int busiest_idle_cpus;
    - unsigned long max_load;
    - unsigned long busiest_load_per_task;
    + u64 max_load;
    + u64 busiest_load_per_task;
    unsigned long busiest_nr_running;
    unsigned long busiest_group_capacity;
    unsigned long busiest_has_capacity;
    @@ -2461,8 +2461,8 @@ static inline void update_sd_power_savings_stats(struct sched_group *group,
    group_first_cpu(group) > group_first_cpu(sds->group_min))) {
    sds->group_min = group;
    sds->min_nr_running = sgs->sum_nr_running;
    - sds->min_load_per_task = sgs->sum_weighted_load /
    - sgs->sum_nr_running;
    + sds->min_load_per_task = div_u64(sgs->sum_weighted_load,
    + sgs->sum_nr_running);
    }

    /*
    --
    1.7.3.1


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