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x86_64: Remove dead code and other janitor work in tsc.c

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Remove unused code and variables and do some codingstyle / whitespace
cleanups while at it.

Cc: john stultz <johnstul@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Thomas Gleixner 2007-07-21 17:10:13 +02:00 committed by Linus Torvalds
parent ef81ab2c72
commit 7ff984785c
1 changed files with 11 additions and 28 deletions
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39
arch/x86_64/kernel/tsc.c
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@ -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)