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Commit 2d295abd authored by Puja Gupta's avatar Puja Gupta
Browse files

sched: Call init_sched_energy_costs() before sched_energy_probe() 



There is no guarantee that init_sched_energy_costs() is completed before
sched_energy_probe() gets called. Make sure this happens.

While at it, do some code cleanup of unused code.

Change-Id: I4bd49f7c98dfafb9b794372259f19461900df857
Signed-off-by: default avatarPuja Gupta <pujag@codeaurora.org>
parent 4875db87

arch/arm64/include/asm/topology.h

+0 −3
Original line number Diff line number Diff line
@@ -44,9 +44,6 @@ int pcibus_to_node(struct pci_bus *bus); 
/* Enable topology flag updates */

#define arch_update_cpu_topology topology_update_cpu_topology



#define arch_update_cpu_capacity update_cpu_power_capacity

extern void update_cpu_power_capacity(int cpu);



#include <asm-generic/topology.h>



#endif /* _ASM_ARM_TOPOLOGY_H */

arch/arm64/kernel/topology.c

+0 −21
Original line number Diff line number Diff line
@@ -317,27 +317,6 @@ const struct sched_group_energy * const cpu_system_energy(int cpu) 
	return sge_array[cpu][SD_LEVEL2];

}



static void update_cpu_capacity(unsigned int cpu)

{

	unsigned long capacity = SCHED_CAPACITY_SCALE;



	if (cpu_core_energy(cpu)) {

		int max_cap_idx = cpu_core_energy(cpu)->nr_cap_states - 1;



		capacity = cpu_core_energy(cpu)->cap_states[max_cap_idx].cap;

	}



	topology_set_cpu_scale(cpu, capacity);



	pr_info("CPU%d: update cpu_capacity %lu\n",

		cpu, arch_scale_cpu_capacity(NULL, cpu));

}



void update_cpu_power_capacity(int cpu)

{

	update_cpu_capacity(cpu);

}



static struct sched_domain_topology_level arm64_topology[] = {

#ifdef CONFIG_SCHED_SMT

	{ cpu_smt_mask, smt_flags, SD_INIT_NAME(SMT) },

kernel/sched/energy.c

+4 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ static void free_resources(void) 
		}

	}

}

static bool sge_ready;



void init_sched_energy_costs(void)

{
@@ -136,6 +137,7 @@ void init_sched_energy_costs(void) 
		}

	}



	sge_ready = true;

	pr_info("Sched-energy-costs installed from DT\n");

	return;
@@ -153,6 +155,8 @@ static int sched_energy_probe(struct platform_device *pdev) 


	if (!sched_is_energy_aware())

		return 0;

	if (!sge_ready)

		return -EPROBE_DEFER;



	max_frequencies = kmalloc_array(nr_cpu_ids, sizeof(unsigned long),

					GFP_KERNEL);

kernel/sched/sched.h

+0 −7
Original line number Diff line number Diff line
@@ -1844,13 +1844,6 @@ unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu) 
}

#endif



#ifndef arch_update_cpu_capacity

static __always_inline

void arch_update_cpu_capacity(int cpu)

{

}

#endif



#ifdef CONFIG_SMP

static inline unsigned long capacity_of(int cpu)

{