7 files changed, 9 insertions, 153 deletions

diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 9f0fc9e6ce0d..7716e68f7b18 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -366,8 +366,5 @@ static inline void log_error(char *buf, unsigned int err_type, int fatal)
 #define machine_late_initcall(mach,fn)          __define_machine_initcall(mach,"7",fn,7)
 #define machine_late_initcall_sync(mach,fn)     __define_machine_initcall(mach,"7s",fn,7s)
 
-void generic_suspend_disable_irqs(void);
-void generic_suspend_enable_irqs(void);
-
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_MACHDEP_H */
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h
index 27ccb764fdab..dc779dfcf258 100644
--- a/arch/powerpc/include/asm/time.h
+++ b/arch/powerpc/include/asm/time.h
@@ -28,16 +28,12 @@
 extern unsigned long tb_ticks_per_jiffy;
 extern unsigned long tb_ticks_per_usec;
 extern unsigned long tb_ticks_per_sec;
-extern u64 tb_to_xs;
-extern unsigned      tb_to_us;
 
 struct rtc_time;
 extern void to_tm(int tim, struct rtc_time * tm);
 extern void GregorianDay(struct rtc_time *tm);
-extern time_t last_rtc_update;
 
 extern void generic_calibrate_decr(void);
-extern void wakeup_decrementer(void);
 extern void snapshot_timebase(void);
 
 extern void set_dec_cpu6(unsigned int val);
@@ -204,9 +200,6 @@ static inline unsigned long tb_ticks_since(unsigned long tstamp)
 extern u64 mulhdu(u64, u64);
 #endif
 
-extern void smp_space_timers(unsigned int);
-
-extern unsigned mulhwu_scale_factor(unsigned, unsigned);
 extern void div128_by_32(u64 dividend_high, u64 dividend_low,
                          unsigned divisor, struct div_result *dr);
 
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 5c196d1086d9..8764daad309b 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -288,8 +288,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                         max_cpus = NR_CPUS;
         else
                 max_cpus = 1;
- 
-        smp_space_timers(max_cpus);
 
         for_each_possible_cpu(cpu)
                 if (cpu != boot_cpuid)
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 5adebaf47f13..ccb8759c8532 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -149,16 +149,6 @@ unsigned long tb_ticks_per_usec = 100; /* sane default */
 EXPORT_SYMBOL(tb_ticks_per_usec);
 unsigned long tb_ticks_per_sec;
 EXPORT_SYMBOL(tb_ticks_per_sec);        /* for cputime_t conversions */
-u64 tb_to_xs;
-unsigned tb_to_us;
-
-#define TICKLEN_SCALE   NTP_SCALE_SHIFT
-static u64 last_tick_len;       /* units are ns / 2^TICKLEN_SCALE */
-static u64 ticklen_to_xs;       /* 0.64 fraction */
-
-/* If last_tick_len corresponds to about 1/HZ seconds, then
-   last_tick_len << TICKLEN_SHIFT will be about 2^63. */
-#define TICKLEN_SHIFT   (63 - 30 - TICKLEN_SCALE + SHIFT_HZ)
 
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL_GPL(rtc_lock);
@@ -174,7 +164,6 @@ unsigned long ppc_proc_freq;
 EXPORT_SYMBOL(ppc_proc_freq);
 unsigned long ppc_tb_freq;
 
-static u64 tb_last_jiffy __cacheline_aligned_in_smp;
 static DEFINE_PER_CPU(u64, last_jiffy);
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
@@ -446,7 +435,6 @@ EXPORT_SYMBOL(profile_pc);
 
 static int __init iSeries_tb_recal(void)
 {
-        struct div_result divres;
         unsigned long titan, tb;
 
         /* Make sure we only run on iSeries */
@@ -477,10 +465,7 @@ static int __init iSeries_tb_recal(void)
                                 tb_ticks_per_jiffy = new_tb_ticks_per_jiffy;
                                 tb_ticks_per_sec   = new_tb_ticks_per_sec;
                                 calc_cputime_factors();
-                                div128_by_32( XSEC_PER_SEC, 0, tb_ticks_per_sec, &divres );
-                                tb_to_xs = divres.result_low;
                                 vdso_data->tb_ticks_per_sec = tb_ticks_per_sec;
-                                vdso_data->tb_to_xs = tb_to_xs;
                                 setup_cputime_one_jiffy();
                         }
                         else {
@@ -643,27 +628,9 @@ void timer_interrupt(struct pt_regs * regs)
         trace_timer_interrupt_exit(regs);
 }
 
-void wakeup_decrementer(void)
-{
-        unsigned long ticks;
-
-        /*
-         * The timebase gets saved on sleep and restored on wakeup,
-         * so all we need to do is to reset the decrementer.
-         */
-        ticks = tb_ticks_since(__get_cpu_var(last_jiffy));
-        if (ticks < tb_ticks_per_jiffy)
-                ticks = tb_ticks_per_jiffy - ticks;
-        else
-                ticks = 1;
-        set_dec(ticks);
-}
-
 #ifdef CONFIG_SUSPEND
-void generic_suspend_disable_irqs(void)
+static void generic_suspend_disable_irqs(void)
 {
-        preempt_disable();
-
         /* Disable the decrementer, so that it doesn't interfere
          * with suspending.
          */
@@ -673,12 +640,9 @@ void generic_suspend_disable_irqs(void)
         set_dec(0x7fffffff);
 }
 
-void generic_suspend_enable_irqs(void)
+static void generic_suspend_enable_irqs(void)
 {
-        wakeup_decrementer();
-
         local_irq_enable();
-        preempt_enable();
 }
 
 /* Overrides the weak version in kernel/power/main.c */
@@ -698,23 +662,6 @@ void arch_suspend_enable_irqs(void)
 }
 #endif
 
-#ifdef CONFIG_SMP
-void __init smp_space_timers(unsigned int max_cpus)
-{
-        int i;
-        u64 previous_tb = per_cpu(last_jiffy, boot_cpuid);
-
-        /* make sure tb > per_cpu(last_jiffy, cpu) for all cpus always */
-        previous_tb -= tb_ticks_per_jiffy;
-
-        for_each_possible_cpu(i) {
-                if (i == boot_cpuid)
-                        continue;
-                per_cpu(last_jiffy, i) = previous_tb;
-        }
-}
-#endif
-