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-rw-r--r--arch/x86_64/kernel/tsc.c39
1 files changed, 11 insertions, 28 deletions
diff --git a/arch/x86_64/kernel/tsc.c b/arch/x86_64/kernel/tsc.c
index e850aa01e1b..9b76b03d060 100644
--- a/arch/x86_64/kernel/tsc.c
+++ b/arch/x86_64/kernel/tsc.c
@@ -61,25 +61,9 @@ inline int check_tsc_unstable(void)
* first tick after the change will be slightly wrong.
*/
-#include <linux/workqueue.h>
-
-static unsigned int cpufreq_delayed_issched = 0;
-static unsigned int cpufreq_init = 0;
-static struct work_struct cpufreq_delayed_get_work;
-
-static void handle_cpufreq_delayed_get(struct work_struct *v)
-{
- unsigned int cpu;
- for_each_online_cpu(cpu) {
- cpufreq_get(cpu);
- }
- cpufreq_delayed_issched = 0;
-}
-
-static unsigned int ref_freq = 0;
-static unsigned long loops_per_jiffy_ref = 0;
-
-static unsigned long tsc_khz_ref = 0;
+static unsigned int ref_freq;
+static unsigned long loops_per_jiffy_ref;
+static unsigned long tsc_khz_ref;
static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
void *data)
@@ -125,10 +109,8 @@ static struct notifier_block time_cpufreq_notifier_block = {
static int __init cpufreq_tsc(void)
{
- INIT_WORK(&cpufreq_delayed_get_work, handle_cpufreq_delayed_get);
- if (!cpufreq_register_notifier(&time_cpufreq_notifier_block,
- CPUFREQ_TRANSITION_NOTIFIER))
- cpufreq_init = 1;
+ cpufreq_register_notifier(&time_cpufreq_notifier_block,
+ CPUFREQ_TRANSITION_NOTIFIER);
return 0;
}
@@ -153,17 +135,18 @@ __cpuinit int unsynchronized_tsc(void)
#endif
/* Most intel systems have synchronized TSCs except for
multi node systems */
- if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
+ if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
#ifdef CONFIG_ACPI
/* But TSC doesn't tick in C3 so don't use it there */
- if (acpi_gbl_FADT.header.length > 0 && acpi_gbl_FADT.C3latency < 1000)
+ if (acpi_gbl_FADT.header.length > 0 &&
+ acpi_gbl_FADT.C3latency < 1000)
return 1;
#endif
- return 0;
+ return 0;
}
- /* Assume multi socket systems are not synchronized */
- return num_present_cpus() > 1;
+ /* Assume multi socket systems are not synchronized */
+ return num_present_cpus() > 1;
}
int __init notsc_setup(char *s)