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sh: Split out CPU topology initialization.

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Split out the CPU topology initialization to a separate file,
and switch it to a percpu type, rather than an NR_CPUS array.

At the same time, switch to only registering present CPUs,
rather than using the possible CPU map.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2007-05-14 12:50:43 +09:00 committed by Paul Mundt
parent 85f6038f21
commit 7a302a9674
3 changed files with 26 additions and 19 deletions
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9
arch/sh/kernel/Makefile
View File

@ -4,10 +4,9 @@
extra-y := head.o init_task.o vmlinux.lds
obj-y := process.o signal.o traps.o irq.o \
ptrace.o setup.o time.o sys_sh.o semaphore.o \
io.o io_generic.o sh_ksyms.o syscalls.o \
debugtraps.o
obj-y := debugtraps.o io.o io_generic.o irq.o process.o ptrace.o \
semaphore.o setup.o signal.o sys_sh.o syscalls.o \
time.o topology.o traps.o
obj-y += cpu/ timers/
obj-$(CONFIG_VSYSCALL) += vsyscall/
@ -17,7 +16,7 @@ obj-$(CONFIG_CF_ENABLER) += cf-enabler.o
obj-$(CONFIG_SH_STANDARD_BIOS) += sh_bios.o
obj-$(CONFIG_SH_KGDB) += kgdb_stub.o kgdb_jmp.o
obj-$(CONFIG_SH_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_MODULES) += sh_ksyms.o module.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o

15
arch/sh/kernel/setup.c
View File

@ -23,6 +23,7 @@
#include <linux/kexec.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/setup.h>
@ -389,20 +390,6 @@ struct sh_machine_vector* __init get_mv_byname(const char* name)
return NULL;
}
static struct cpu cpu[NR_CPUS];
static int __init topology_init(void)
{
int cpu_id;
for_each_possible_cpu(cpu_id)
register_cpu(&cpu[cpu_id], cpu_id);
return 0;
}
subsys_initcall(topology_init);
static const char *cpu_name[] = {
[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
[CPU_SH7604] = "SH7604", [CPU_SH7300] = "SH7300",

21
arch/sh/kernel/topology.c Normal file
View File

@ -0,0 +1,21 @@
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/percpu.h>
static DEFINE_PER_CPU(struct cpu, cpu_devices);
static int __init topology_init(void)
{
int i, ret;
for_each_present_cpu(i) {
ret = register_cpu(&per_cpu(cpu_devices, i), i);
if (unlikely(ret))
printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n",
__FUNCTION__, i, ret);
}
return 0;
}
subsys_initcall(topology_init);