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-rw-r--r--arch/i386/kernel/paravirt.c2
-rw-r--r--arch/i386/kernel/time.c14
-rw-r--r--include/asm-i386/paravirt.h4
-rw-r--r--include/asm-i386/time.h5
4 files changed, 18 insertions, 7 deletions
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c
index 871448db142..2ec331e03fa 100644
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -494,7 +494,7 @@ struct paravirt_ops paravirt_ops = {
.memory_setup = machine_specific_memory_setup,
.get_wallclock = native_get_wallclock,
.set_wallclock = native_set_wallclock,
- .time_init = time_init_hook,
+ .time_init = hpet_time_init,
.init_IRQ = native_init_IRQ,
.cpuid = native_cpuid,
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index a5350059557..ccd3734edb8 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -262,14 +262,22 @@ void notify_arch_cmos_timer(void)
extern void (*late_time_init)(void);
/* Duplicate of time_init() below, with hpet_enable part added */
-static void __init hpet_time_init(void)
+void __init hpet_time_init(void)
{
if (!hpet_enable())
setup_pit_timer();
- do_time_init();
+ time_init_hook();
}
+/*
+ * This is called directly from init code; we must delay timer setup in the
+ * HPET case as we can't make the decision to turn on HPET this early in the
+ * boot process.
+ *
+ * The chosen time_init function will usually be hpet_time_init, above, but
+ * in the case of virtual hardware, an alternative function may be substituted.
+ */
void __init time_init(void)
{
- late_time_init = hpet_time_init;
+ late_time_init = choose_time_init();
}
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index 1e4226a8526..f8319cae2ac 100644
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -186,9 +186,9 @@ static inline int set_wallclock(unsigned long nowtime)
return paravirt_ops.set_wallclock(nowtime);
}
-static inline void do_time_init(void)
+static inline void (*choose_time_init(void))(void)
{
- return paravirt_ops.time_init();
+ return paravirt_ops.time_init;
}
/* The paravirtualized CPUID instruction. */
diff --git a/include/asm-i386/time.h b/include/asm-i386/time.h
index ea8065af825..eac011366dc 100644
--- a/include/asm-i386/time.h
+++ b/include/asm-i386/time.h
@@ -28,13 +28,16 @@ static inline int native_set_wallclock(unsigned long nowtime)
return retval;
}
+extern void (*late_time_init)(void);
+extern void hpet_time_init(void);
+
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else /* !CONFIG_PARAVIRT */
#define get_wallclock() native_get_wallclock()
#define set_wallclock(x) native_set_wallclock(x)
-#define do_time_init() time_init_hook()
+#define choose_time_init() hpet_time_init
#endif /* CONFIG_PARAVIRT */