x86: Move tsc_calibration to x86_init_ops
TSC calibration is modified by the vmware hypervisor and paravirt by
separate means. Moorestown wants to add its own calibration routine as
well. So make calibrate_tsc a proper x86_init_ops function and
override it by paravirt or by the early setup of the vmware
hypervisor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
index 369f5c5..b78c094 100644
--- a/arch/x86/include/asm/hypervisor.h
+++ b/arch/x86/include/asm/hypervisor.h
@@ -20,7 +20,7 @@
#ifndef ASM_X86__HYPERVISOR_H
#define ASM_X86__HYPERVISOR_H
-extern unsigned long get_hypervisor_tsc_freq(void);
extern void init_hypervisor(struct cpuinfo_x86 *c);
+extern void init_hypervisor_platform(void);
#endif
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index 11a4ba7..1e458a5 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -210,7 +210,6 @@
{
return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock);
}
-#define calibrate_tsc() (pv_time_ops.get_tsc_khz())
static inline unsigned long long paravirt_read_pmc(int counter)
{
diff --git a/arch/x86/include/asm/timer.h b/arch/x86/include/asm/timer.h
index 65228cc..5469630 100644
--- a/arch/x86/include/asm/timer.h
+++ b/arch/x86/include/asm/timer.h
@@ -8,7 +8,6 @@
#define TICK_SIZE (tick_nsec / 1000)
unsigned long long native_sched_clock(void);
-unsigned long native_calibrate_tsc(void);
extern int recalibrate_cpu_khz(void);
#if defined(CONFIG_X86_32) && defined(CONFIG_X86_IO_APIC)
@@ -19,10 +18,6 @@
extern int no_timer_check;
-#ifndef CONFIG_PARAVIRT
-#define calibrate_tsc() native_calibrate_tsc()
-#endif
-
/* Accelerators for sched_clock()
* convert from cycles(64bits) => nanoseconds (64bits)
* basic equation:
diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index 38ae163..c042729 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -48,7 +48,8 @@
extern void tsc_init(void);
extern void mark_tsc_unstable(char *reason);
extern int unsynchronized_tsc(void);
-int check_tsc_unstable(void);
+extern int check_tsc_unstable(void);
+extern unsigned long native_calibrate_tsc(void);
/*
* Boot-time check whether the TSCs are synchronized across
diff --git a/arch/x86/include/asm/vmware.h b/arch/x86/include/asm/vmware.h
index c11b7e1..e49ed6d 100644
--- a/arch/x86/include/asm/vmware.h
+++ b/arch/x86/include/asm/vmware.h
@@ -20,7 +20,7 @@
#ifndef ASM_X86__VMWARE_H
#define ASM_X86__VMWARE_H
-extern unsigned long vmware_get_tsc_khz(void);
+extern void vmware_platform_setup(void);
extern int vmware_platform(void);
extern void vmware_set_feature_bits(struct cpuinfo_x86 *c);
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index f8bdd22..20df518 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -112,8 +112,17 @@
void (*setup_percpu_clockev)(void);
};
+/**
+ * struct x86_platform_ops - platform specific runtime functions
+ * @calibrate_tsc: calibrate TSC
+ */
+struct x86_platform_ops {
+ unsigned long (*calibrate_tsc)(void);
+};
+
extern struct x86_init_ops x86_init;
extern struct x86_cpuinit_ops x86_cpuinit;
+extern struct x86_platform_ops x86_platform;
extern void x86_init_noop(void);
extern void x86_init_uint_noop(unsigned int unused);