x86: TSC: use one set of reference variables

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 11 insertions, 11 deletions

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index ebb9bf824a07..52284d31fc9c 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -104,7 +104,7 @@ __setup("notsc", notsc_setup);
 /*
  * Read TSC and the reference counters. Take care of SMI disturbance
  */
-static u64 tsc_read_refs(u64 *pm, u64 *hpet)
+static u64 tsc_read_refs(u64 *p, int hpet)
 {
         u64 t1, t2;
         int i;
@@ -112,9 +112,9 @@ static u64 tsc_read_refs(u64 *pm, u64 *hpet)
         for (i = 0; i < MAX_RETRIES; i++) {
                 t1 = get_cycles();
                 if (hpet)
-                        *hpet = hpet_readl(HPET_COUNTER) & 0xFFFFFFFF;
+                        *p = hpet_readl(HPET_COUNTER) & 0xFFFFFFFF;
                 else
-                        *pm = acpi_pm_read_early();
+                        *p = acpi_pm_read_early();
                 t2 = get_cycles();
                 if ((t2 - t1) < SMI_TRESHOLD)
                         return t2;
@@ -228,7 +228,7 @@ static unsigned long pit_calibrate_tsc(void)
  */
 unsigned long native_calibrate_tsc(void)
 {
-        u64 tsc1, tsc2, delta, pm1, pm2, hpet1, hpet2;
+        u64 tsc1, tsc2, delta, ref1, ref2;
         unsigned long tsc_pit_min = ULONG_MAX, tsc_ref_min = ULONG_MAX;
         unsigned long flags;
         int hpet = is_hpet_enabled(), i;
@@ -267,16 +267,16 @@ unsigned long native_calibrate_tsc(void)
                  * read the end value.
                  */
                 local_irq_save(flags);
-                tsc1 = tsc_read_refs(&pm1, hpet ? &hpet1 : NULL);
+                tsc1 = tsc_read_refs(&ref1, hpet);
                 tsc_pit_khz = pit_calibrate_tsc();
-                tsc2 = tsc_read_refs(&pm2, hpet ? &hpet2 : NULL);
+                tsc2 = tsc_read_refs(&ref2, hpet);
                 local_irq_restore(flags);
 
                 /* Pick the lowest PIT TSC calibration so far */
                 tsc_pit_min = min(tsc_pit_min, tsc_pit_khz);
 
                 /* hpet or pmtimer available ? */
-                if (!hpet && !pm1 && !pm2)
+                if (!hpet && !ref1 && !ref2)
                         continue;
 
                 /* Check, whether the sampling was disturbed by an SMI */
@@ -285,9 +285,9 @@ unsigned long native_calibrate_tsc(void)
 
                 tsc2 = (tsc2 - tsc1) * 1000000LL;
                 if (hpet)
-                        tsc2 = calc_hpet_ref(tsc2, hpet1, hpet2);
+                        tsc2 = calc_hpet_ref(tsc2, ref1, ref2);
                 else
-                        tsc2 = calc_pmtimer_ref(tsc2, pm1, pm2);
+                        tsc2 = calc_pmtimer_ref(tsc2, ref1, ref2);
 
                 tsc_ref_min = min(tsc_ref_min, (unsigned long) tsc2);
         }
@@ -301,7 +301,7 @@ unsigned long native_calibrate_tsc(void)
                        "SMI disturbance.\n");
 
                 /* We don't have an alternative source, disable TSC */
-                if (!hpet && !pm1 && !pm2) {
+                if (!hpet && !ref1 && !ref2) {
                         printk("TSC: No reference (HPET/PMTIMER) available\n");
                         return 0;
                 }
@@ -321,7 +321,7 @@ unsigned long native_calibrate_tsc(void)
         }
 
         /* We don't have an alternative source, use the PIT calibration value */
-        if (!hpet && !pm1 && !pm2) {
+        if (!hpet && !ref1 && !ref2) {
                 printk(KERN_INFO "TSC: Using PIT calibration value\n");
                 return tsc_pit_min;
         }