hm, why not use system_state for this?
Ingo
* Chuck Ebbert <[email protected]> wrote:
> migration_cost prints after every CPU hotplug event. Make it
> print only once at boot.
>
> Signed-off-by: Chuck Ebbert <[email protected]>
>
> --- 2.6.16-rc1-mm4-386.orig/kernel/sched.c
> +++ 2.6.16-rc1-mm4-386/kernel/sched.c
> @@ -5656,6 +5656,7 @@ static void calibrate_migration_costs(co
> int cpu1 = -1, cpu2 = -1, cpu, orig_cpu = raw_smp_processor_id();
> unsigned long j0, j1, distance, max_distance = 0;
> struct sched_domain *sd;
> + static int printed_cost = 0; /* has cost already been printed? */
>
> j0 = jiffies;
>
> @@ -5699,13 +5700,16 @@ static void calibrate_migration_costs(co
> -1
> #endif
> );
> - printk("migration_cost=");
> - for (distance = 0; distance <= max_distance; distance++) {
> - if (distance)
> - printk(",");
> - printk("%ld", (long)migration_cost[distance] / 1000);
> + if (!printed_cost) {
> + printed_cost++;
> + printk("migration_cost=");
> + for (distance = 0; distance <= max_distance; distance++) {
> + if (distance)
> + printk(",");
> + printk("%ld", (long)migration_cost[distance] / 1000);
> + }
> + printk("\n");
> }
> - printk("\n");
> j1 = jiffies;
> if (migration_debug)
> printk("migration: %ld seconds\n", (j1-j0)/HZ);
> --
> Chuck
> -
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