@@ -113,6 +113,8 @@ struct machdep_calls {
/* Optional, may be NULL. */
void (*show_cpuinfo)(struct seq_file *m);
void (*show_percpuinfo)(struct seq_file *m, int i);
+ /* Returns the current operating frequency of "cpu" in Hz */
+ unsigned long (*get_proc_freq)(unsigned int cpu);
void (*init_IRQ)(void);
@@ -209,6 +209,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
{
unsigned long cpu_id = (unsigned long)v - 1;
unsigned int pvr;
+ unsigned long proc_freq;
unsigned short maj;
unsigned short min;
@@ -260,12 +261,19 @@ static int show_cpuinfo(struct seq_file *m, void *v)
#endif /* CONFIG_TAU */
/*
- * Assume here that all clock rates are the same in a
- * smp system. -- Cort
+ * Platforms that have variable clock rates, should implement
+ * the method ppc_md.get_proc_freq() that reports the clock
+ * rate of a given cpu. The rest can use ppc_proc_freq to
+ * report the clock rate that is same across all cpus.
*/
- if (ppc_proc_freq)
+ if (ppc_md.get_proc_freq)
+ proc_freq = ppc_md.get_proc_freq(cpu_id);
+ else
+ proc_freq = ppc_proc_freq;
+
+ if (proc_freq)
seq_printf(m, "clock\t\t: %lu.%06luMHz\n",
- ppc_proc_freq / 1000000, ppc_proc_freq % 1000000);
+ proc_freq / 1000000, proc_freq % 1000000);
if (ppc_md.show_percpuinfo != NULL)
ppc_md.show_percpuinfo(m, cpu_id);