vserver 1.9.3

[linux-2.6.git] / arch / ppc / kernel / time.c

diff --git a/arch/ppc/kernel/time.c b/arch/ppc/kernel/time.c
index cfeff04..60e7ef5 100644 (file)
--- a/arch/ppc/kernel/time.c
+++ b/arch/ppc/kernel/time.c
@@ -108,41 +108,18 @@ static inline int tb_delta(unsigned *jiffy_stamp) {
        return delta;
 }
 
-extern char _stext;
-
-static inline void ppc_do_profile (struct pt_regs *regs)
+#ifdef CONFIG_SMP
+unsigned long profile_pc(struct pt_regs *regs)
 {
-       unsigned long nip;
-       extern unsigned long prof_cpu_mask;
-
-       profile_hook(regs);
-
-       if (user_mode(regs))
-               return;
-
-       if (!prof_buffer)
-               return;
+       unsigned long pc = instruction_pointer(regs);
 
-       nip = instruction_pointer(regs);
+       if (in_lock_functions(pc))
+               return regs->link;
 
-       /*
-        * Only measure the CPUs specified by /proc/irq/prof_cpu_mask.
-        * (default is all CPUs.)
-        */
-       if (!((1<<smp_processor_id()) & prof_cpu_mask))
-               return;
-
-       nip -= (unsigned long) &_stext;
-       nip >>= prof_shift;
-       /*
-        * Don't ignore out-of-bounds EIP values silently,
-        * put them into the last histogram slot, so if
-        * present, they will show up as a sharp peak.
-        */
-       if (nip > prof_len-1)
-               nip = prof_len-1;
-       atomic_inc((atomic_t *)&prof_buffer[nip]);
+       return pc;
 }
+EXPORT_SYMBOL(profile_pc);
+#endif
 
 /*
  * timer_interrupt - gets called when the decrementer overflows,
@@ -161,10 +138,10 @@ void timer_interrupt(struct pt_regs * regs)
 
        irq_enter();
 
-       while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) < 0) {
+       while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) <= 0) {
                jiffy_stamp += tb_ticks_per_jiffy;
                
-               ppc_do_profile(regs);
+               profile_tick(CPU_PROFILING, regs);
 
                if (smp_processor_id())
                        continue;