projects/linux·commit e37d05da

cpu: change cpu_sys_devices from array to per_cpu variable

e37d05da · Mike Travis <[email protected]> · 2008-05-01 04:35:16 -07:00

Change cpu_sys_devices from array to per_cpu variable in drivers/base/cpu.c.

Signed-off-by: Mike Travis <[email protected]>
Cc: Ashok Raj <[email protected]>
Cc: Vivek Goyal <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Suresh Siddha <[email protected]>
Cc: Kay Sievers <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Commit
e37d05dad7ff9744efd8ea95a70d389e9a65a6fc
Parents
bd730967

Changes

1 files changed · +5 −5

FileStatusAddDelContent
drivers/base/cpu.cmodified+5−5View file

drivers/base/cpu.c

View file
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 6fe4174..e38dfed 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -18,7 +18,7 @@ struct sysdev_class cpu_sysdev_class = {
};
EXPORT_SYMBOL(cpu_sysdev_class);
-static struct sys_device *cpu_sys_devices[NR_CPUS];
+static DEFINE_PER_CPU(struct sys_device *, cpu_sys_devices);
#ifdef CONFIG_HOTPLUG_CPU
static ssize_t show_online(struct sys_device *dev, char *buf)
@@ -68,7 +68,7 @@ void unregister_cpu(struct cpu *cpu)
sysdev_remove_file(&cpu->sysdev, &attr_online);
sysdev_unregister(&cpu->sysdev);
- cpu_sys_devices[logical_cpu] = NULL;
+ per_cpu(cpu_sys_devices, logical_cpu) = NULL;
return;
}
#else /* ... !CONFIG_HOTPLUG_CPU */
@@ -167,7 +167,7 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
if (!error && cpu->hotpluggable)
register_cpu_control(cpu);
if (!error)
- cpu_sys_devices[num] = &cpu->sysdev;
+ per_cpu(cpu_sys_devices, num) = &cpu->sysdev;
if (!error)
register_cpu_under_node(num, cpu_to_node(num));
@@ -180,8 +180,8 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
struct sys_device *get_cpu_sysdev(unsigned cpu)
{
- if (cpu < NR_CPUS)
- return cpu_sys_devices[cpu];
+ if (cpu < nr_cpu_ids && cpu_possible(cpu))
+ return per_cpu(cpu_sys_devices, cpu);
else
return NULL;
}