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Diffstat (limited to 'arch/powerpc/kernel/sysfs.c')
-rw-r--r--arch/powerpc/kernel/sysfs.c46
1 files changed, 8 insertions, 38 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index e235e52dc4fe..c0d8c2006bf4 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -35,7 +35,7 @@ static DEFINE_PER_CPU(struct cpu, cpu_devices);
#ifdef CONFIG_PPC64
/* Time in microseconds we delay before sleeping in the idle loop */
-DEFINE_PER_CPU(unsigned long, smt_snooze_delay) = { 100 };
+DEFINE_PER_CPU(long, smt_snooze_delay) = { 100 };
static ssize_t store_smt_snooze_delay(struct sys_device *dev,
struct sysdev_attribute *attr,
@@ -44,9 +44,9 @@ static ssize_t store_smt_snooze_delay(struct sys_device *dev,
{
struct cpu *cpu = container_of(dev, struct cpu, sysdev);
ssize_t ret;
- unsigned long snooze;
+ long snooze;
- ret = sscanf(buf, "%lu", &snooze);
+ ret = sscanf(buf, "%ld", &snooze);
if (ret != 1)
return -EINVAL;
@@ -61,53 +61,23 @@ static ssize_t show_smt_snooze_delay(struct sys_device *dev,
{
struct cpu *cpu = container_of(dev, struct cpu, sysdev);
- return sprintf(buf, "%lu\n", per_cpu(smt_snooze_delay, cpu->sysdev.id));
+ return sprintf(buf, "%ld\n", per_cpu(smt_snooze_delay, cpu->sysdev.id));
}
static SYSDEV_ATTR(smt_snooze_delay, 0644, show_smt_snooze_delay,
store_smt_snooze_delay);
-/* Only parse OF options if the matching cmdline option was not specified */
-static int smt_snooze_cmdline;
-
-static int __init smt_setup(void)
-{
- struct device_node *options;
- const unsigned int *val;
- unsigned int cpu;
-
- if (!cpu_has_feature(CPU_FTR_SMT))
- return -ENODEV;
-
- options = of_find_node_by_path("/options");
- if (!options)
- return -ENODEV;
-
- val = of_get_property(options, "ibm,smt-snooze-delay", NULL);
- if (!smt_snooze_cmdline && val) {
- for_each_possible_cpu(cpu)
- per_cpu(smt_snooze_delay, cpu) = *val;
- }
-
- of_node_put(options);
- return 0;
-}
-__initcall(smt_setup);
-
static int __init setup_smt_snooze_delay(char *str)
{
unsigned int cpu;
- int snooze;
+ long snooze;
if (!cpu_has_feature(CPU_FTR_SMT))
return 1;
- smt_snooze_cmdline = 1;
-
- if (get_option(&str, &snooze)) {
- for_each_possible_cpu(cpu)
- per_cpu(smt_snooze_delay, cpu) = snooze;
- }
+ snooze = simple_strtol(str, NULL, 10);
+ for_each_possible_cpu(cpu)
+ per_cpu(smt_snooze_delay, cpu) = snooze;
return 1;
}