When the scheduler was upgraded to 3.18, this api client was not updated.
Signed-off-by: Jorge Ramirez-Ortiz jorge.ramirez-ortiz@linaro.org --- arch/arm64/kernel/topology.c | 56 ++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 28 deletions(-)
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c index 6f8c2fa..2a99c94 100644 --- a/arch/arm64/kernel/topology.c +++ b/arch/arm64/kernel/topology.c @@ -25,26 +25,26 @@ #include <asm/topology.h>
/* - * cpu power table - * This per cpu data structure describes the relative capacity of each core. + * cpu capacity table + * This per cpu data structure describes the relative capacity of each core. * On a heteregenous system, cores don't have the same computation capacity - * and we reflect that difference in the cpu_power field so the scheduler can - * take this difference into account during load balance. A per cpu structure - * is preferred because each CPU updates its own cpu_power field during the - * load balance except for idle cores. One idle core is selected to run the - * rebalance_domains for all idle cores and the cpu_power can be updated - * during this sequence. + * and we reflect that difference in the cpu_capacity field so the scheduler + * can take this difference into account during load balance. A per cpu + * structure is preferred because each CPU updates its own cpu_capacity field + * during the load balance except for idle cores. One idle core is selected + * to run the rebalance_domains for all idle cores and the cpu_capacity can be + * updated during this sequence. */ static DEFINE_PER_CPU(unsigned long, cpu_scale);
-unsigned long arch_scale_freq_power(struct sched_domain *sd, int cpu) +unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) { return per_cpu(cpu_scale, cpu); }
-static void set_power_scale(unsigned int cpu, unsigned long power) +static void set_capacity_scale(unsigned int cpu, unsigned long capacity) { - per_cpu(cpu_scale, cpu) = power; + per_cpu(cpu_scale, cpu) = capacity; }
static int __init get_cpu_for_node(struct device_node *node) @@ -194,11 +194,11 @@ struct cpu_efficiency { * Table of relative efficiency of each processors * The efficiency value must fit in 20bit and the final * cpu_scale value must be in the range - * 0 < cpu_scale < 3*SCHED_POWER_SCALE/2 + * 0 < cpu_scale < 3*SCHED_CAPACITY_SCALE/2 * in order to return at most 1 when DIV_ROUND_CLOSEST * is used to compute the capacity of a CPU. * Processors that are not defined in the table, - * use the default SCHED_POWER_SCALE value for cpu_scale. + * use the default SCHED_CAPACITY_SCALE value for cpu_scale. */ static const struct cpu_efficiency table_efficiency[] = { { "arm,cortex-a57", 3891 }, @@ -215,9 +215,9 @@ static unsigned long middle_capacity = 1; * Iterate all CPUs' descriptor in DT and compute the efficiency * (as per table_efficiency). Also calculate a middle efficiency * as close as possible to (max{eff_i} - min{eff_i}) / 2 - * This is later used to scale the cpu_power field such that an - * 'average' CPU is of middle power. Also see the comments near - * table_efficiency[] and update_cpu_power(). + * This is later used to scale the cpu_capacity field such that an + * 'average' CPU is of middle capacity. Also see the comments near + * table_efficiency[] and update_cpu_capacity(). */ static int __init parse_dt_topology(void) { @@ -258,7 +258,7 @@ out: return ret; }
-static void __init parse_dt_cpu_power(void) +static void __init parse_dt_cpu_capacity(void) { const struct cpu_efficiency *cpu_eff; struct device_node *cn; @@ -310,11 +310,11 @@ static void __init parse_dt_cpu_power(void) cpu_capacity(cpu) = capacity; }
- /* If min and max capacities are equal we bypass the update of the + /* If min and max capacities are equals, we bypass the update of the * cpu_scale because all CPUs have the same capacity. Otherwise, we * compute a middle_capacity factor that will ensure that the capacity * of an 'average' CPU of the system will be as close as possible to - * SCHED_POWER_SCALE, which is the default value, but with the + * SCHED_CAPACITY_SCALE, which is the default value, but with the * constraint explained near table_efficiency[]. */ if (min_capacity == max_capacity) @@ -332,15 +332,15 @@ static void __init parse_dt_cpu_power(void) * boot. The update of all CPUs is in O(n^2) for heteregeneous system but the * function returns directly for SMP system. */ -static void update_cpu_power(unsigned int cpu) +static void update_cpu_capacity(unsigned int cpu) { if (!cpu_capacity(cpu)) return;
- set_power_scale(cpu, cpu_capacity(cpu) / middle_capacity); + set_capacity_scale(cpu, cpu_capacity(cpu) / middle_capacity);
- pr_info("CPU%u: update cpu_power %lu\n", - cpu, arch_scale_freq_power(NULL, cpu)); + pr_info("CPU%u: update cpu_capacity %lu\n", + cpu, arch_scale_cpu_capacity(NULL, cpu)); }
/* @@ -412,7 +412,7 @@ void store_cpu_topology(unsigned int cpuid)
topology_populated: update_siblings_masks(cpuid); - update_cpu_power(cpuid); + update_cpu_capacity(cpuid); }
static void __init reset_cpu_topology(void) @@ -433,12 +433,12 @@ static void __init reset_cpu_topology(void) } }
-static void __init reset_cpu_power(void) +static void __init reset_cpu_capacity(void) { unsigned int cpu;
for_each_possible_cpu(cpu) - set_power_scale(cpu, SCHED_CAPACITY_SCALE); + set_capacity_scale(cpu, SCHED_CAPACITY_SCALE); }
void __init init_cpu_topology(void) @@ -452,6 +452,6 @@ void __init init_cpu_topology(void) if (parse_dt_topology()) reset_cpu_topology();
- reset_cpu_power(); - parse_dt_cpu_power(); + reset_cpu_capacity(); + parse_dt_cpu_capacity(); }