x86: rename paravirtualized TSC functions

Rename the paravirtualized calculate_cpu_khz to calibrate_tsc.
In all cases, we actually calibrate_tsc and use that as the cpu_khz value.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Dan Hecht <dhecht@vmware.com>
Cc: Dan Hecht <dhecht@vmware.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

11 files changed, 22 insertions, 26 deletions

diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index e7e5652f65bc..e0f571d58c19 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -285,7 +285,7 @@ struct pv_time_ops pv_time_ops = {
         .get_wallclock = native_get_wallclock,
         .set_wallclock = native_set_wallclock,
         .sched_clock = native_sched_clock,
-        .get_cpu_khz = native_calculate_cpu_khz,
+        .get_tsc_khz = native_calibrate_tsc,
 };
 
 struct pv_irq_ops pv_irq_ops = {
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 94c16bdd5696..3c36f92160c9 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -123,9 +123,9 @@ static u64 __init tsc_read_refs(u64 *pm, u64 *hpet)
 }
 
 /**
- * tsc_calibrate - calibrate the tsc on boot
+ * native_calibrate_tsc - calibrate the tsc on boot
  */
-static unsigned int __init tsc_calibrate(void)
+unsigned long native_calibrate_tsc(void)
 {
         unsigned long flags;
         u64 tsc1, tsc2, tr1, tr2, delta, pm1, pm2, hpet1, hpet2;
@@ -195,10 +195,6 @@ out:
         return tsc_khz_val;
 }
 
-unsigned long native_calculate_cpu_khz(void)
-{
-        return tsc_calibrate();
-}
 
 #ifdef CONFIG_X86_32
 /* Only called from the Powernow K7 cpu freq driver */
@@ -208,8 +204,8 @@ int recalibrate_cpu_khz(void)
         unsigned long cpu_khz_old = cpu_khz;
 
         if (cpu_has_tsc) {
-                cpu_khz = calculate_cpu_khz();
-                tsc_khz = cpu_khz;
+                tsc_khz = calibrate_tsc();
+                cpu_khz = tsc_khz;
                 cpu_data(0).loops_per_jiffy =
                         cpufreq_scale(cpu_data(0).loops_per_jiffy,
                                         cpu_khz_old, cpu_khz);
@@ -487,10 +483,10 @@ void __init tsc_init(void)
         if (!cpu_has_tsc)
                 return;
 
-        cpu_khz = calculate_cpu_khz();
-        tsc_khz = cpu_khz;
+        tsc_khz = calibrate_tsc();
+        cpu_khz = tsc_khz;
 
-        if (!cpu_khz) {
+        if (!tsc_khz) {
                 mark_tsc_unstable("could not calculate TSC khz");
                 return;
         }
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 946bf13b44ab..b15346092b7b 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -932,7 +932,7 @@ static inline int __init activate_vmi(void)
                 pv_apic_ops.setup_secondary_clock = vmi_time_ap_init;
 #endif
                 pv_time_ops.sched_clock = vmi_sched_clock;
-                pv_time_ops.get_cpu_khz = vmi_cpu_khz;
+                pv_time_ops.get_tsc_khz = vmi_tsc_khz;
 
                 /* We have true wallclock functions; disable CMOS clock sync */
                 no_sync_cmos_clock = 1;
diff --git a/arch/x86/kernel/vmiclock_32.c b/arch/x86/kernel/vmiclock_32.c
index ba7d19e102b1..6953859fe289 100644
--- a/arch/x86/kernel/vmiclock_32.c
+++ b/arch/x86/kernel/vmiclock_32.c
@@ -69,8 +69,8 @@ unsigned long long vmi_sched_clock(void)
         return cycles_2_ns(vmi_timer_ops.get_cycle_counter(VMI_CYCLES_AVAILABLE));
 }
 
-/* paravirt_ops.get_cpu_khz = vmi_cpu_khz */
-unsigned long vmi_cpu_khz(void)
+/* paravirt_ops.get_tsc_khz = vmi_tsc_khz */
+unsigned long vmi_tsc_khz(void)
 {
         unsigned long long khz;
         khz = vmi_timer_ops.get_cycle_frequency();
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index e72cf0793fbe..50dad44fb542 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -607,7 +607,7 @@ static unsigned long lguest_get_wallclock(void)
  * what speed it runs at, or 0 if it's unusable as a reliable clock source.
  * This matches what we want here: if we return 0 from this function, the x86
  * TSC clock will give up and not register itself. */
-static unsigned long lguest_cpu_khz(void)
+static unsigned long lguest_tsc_khz(void)
 {
         return lguest_data.tsc_khz;
 }
@@ -998,7 +998,7 @@ __init void lguest_init(void)
         /* time operations */
         pv_time_ops.get_wallclock = lguest_get_wallclock;
         pv_time_ops.time_init = lguest_time_init;
-        pv_time_ops.get_cpu_khz = lguest_cpu_khz;
+        pv_time_ops.get_tsc_khz = lguest_tsc_khz;
 
         /* Now is a good time to look at the implementations of these functions
          * before returning to the rest of lguest_init(). */
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 3b980831602c..dcd4e51f2f16 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1062,7 +1062,7 @@ static const struct pv_time_ops xen_time_ops __initdata = {
 
         .set_wallclock = xen_set_wallclock,
         .get_wallclock = xen_get_wallclock,
-        .get_cpu_khz = xen_cpu_khz,
+        .get_tsc_khz = xen_tsc_khz,
         .sched_clock = xen_sched_clock,
 };
 
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 64f0038b9558..685b77470fc3 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -197,8 +197,8 @@ unsigned long long xen_sched_clock(void)
 }
 
 
-/* Get the CPU speed from Xen */
-unsigned long xen_cpu_khz(void)
+/* Get the TSC speed from Xen */
+unsigned long xen_tsc_khz(void)
 {
         u64 xen_khz = 1000000ULL << 32;
         const struct pvclock_vcpu_time_info *info =
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 9a055592a307..d852ddbb3448 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -32,7 +32,7 @@ void __init xen_build_dynamic_phys_to_machine(void);
 
 void xen_setup_timer(int cpu);
 void xen_setup_cpu_clockevents(void);
-unsigned long xen_cpu_khz(void);
+unsigned long xen_tsc_khz(void);
 void __init xen_time_init(void);
 unsigned long xen_get_wallclock(void);
 int xen_set_wallclock(unsigned long time);
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 6d8966f9d190..ef5e8ec6a6ab 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -84,7 +84,7 @@ struct pv_time_ops {
         int (*set_wallclock)(unsigned long);
 
         unsigned long long (*sched_clock)(void);
-        unsigned long (*get_cpu_khz)(void);
+        unsigned long (*get_tsc_khz)(void);
 };
 
 struct pv_cpu_ops {
@@ -779,7 +779,7 @@ static inline unsigned long long paravirt_sched_clock(void)
 {
         return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
 }
-#define calculate_cpu_khz() (pv_time_ops.get_cpu_khz())
+#define calibrate_tsc() (pv_time_ops.get_tsc_khz())
 
 static inline unsigned long long paravirt_read_pmc(int counter)
 {
diff --git a/include/asm-x86/timer.h b/include/asm-x86/timer.h
index 4f6fcb050c11..fb2a4ddddf3d 100644
--- a/include/asm-x86/timer.h
+++ b/include/asm-x86/timer.h
@@ -7,14 +7,14 @@
 #define TICK_SIZE (tick_nsec / 1000)
 
 unsigned long long native_sched_clock(void);
-unsigned long native_calculate_cpu_khz(void);
+unsigned long native_calibrate_tsc(void);
 
 extern int timer_ack;
 extern int no_timer_check;
 extern int recalibrate_cpu_khz(void);
 
 #ifndef CONFIG_PARAVIRT
-#define calculate_cpu_khz() native_calculate_cpu_khz()
+#define calibrate_tsc() native_calibrate_tsc()
 #endif
 
 /* Accelerators for sched_clock()
diff --git a/include/asm-x86/vmi_time.h b/include/asm-x86/vmi_time.h
index 478188130328..c3118c385156 100644
--- a/include/asm-x86/vmi_time.h
+++ b/include/asm-x86/vmi_time.h
@@ -50,7 +50,7 @@ extern void __init vmi_time_init(void);
 extern unsigned long vmi_get_wallclock(void);
 extern int vmi_set_wallclock(unsigned long now);
 extern unsigned long long vmi_sched_clock(void);
-extern unsigned long vmi_cpu_khz(void);
+extern unsigned long vmi_tsc_khz(void);
 
 #ifdef CONFIG_X86_LOCAL_APIC
 extern void __devinit vmi_time_bsp_init(void);