Merge branch 'master' of /home/cbou/linux-2.6

[pandora-kernel.git] / arch / mips / oprofile / op_model_mipsxx.c

diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index ccbea22..54759f1 100644 (file)
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -31,9 +31,14 @@
 
 #define M_COUNTER_OVERFLOW             (1UL      << 31)
 
+static int (*save_perf_irq)(void);
+
 #ifdef CONFIG_MIPS_MT_SMP
-#define WHAT           (M_TC_EN_VPE | M_PERFCTL_VPEID(smp_processor_id()))
-#define vpe_id()       smp_processor_id()
+static int cpu_has_mipsmt_pertccounters;
+#define WHAT           (M_TC_EN_VPE | \
+                        M_PERFCTL_VPEID(cpu_data[smp_processor_id()].vpe_id))
+#define vpe_id()       (cpu_has_mipsmt_pertccounters ? \
+                       0 : cpu_data[smp_processor_id()].vpe_id)
 
 /*
  * The number of bits to shift to convert between counters per core and
@@ -243,11 +248,11 @@ static inline int __n_counters(void)
 {
        if (!(read_c0_config1() & M_CONFIG1_PC))
                return 0;
-       if (!(r_c0_perfctrl0() & M_PERFCTL_MORE))
+       if (!(read_c0_perfctrl0() & M_PERFCTL_MORE))
                return 1;
-       if (!(r_c0_perfctrl1() & M_PERFCTL_MORE))
+       if (!(read_c0_perfctrl1() & M_PERFCTL_MORE))
                return 2;
-       if (!(r_c0_perfctrl2() & M_PERFCTL_MORE))
+       if (!(read_c0_perfctrl2() & M_PERFCTL_MORE))
                return 3;
 
        return 4;
@@ -274,8 +279,9 @@ static inline int n_counters(void)
        return counters;
 }
 
-static inline void reset_counters(int counters)
+static void reset_counters(void *arg)
 {
+       int counters = (int)(long)arg;
        switch (counters) {
        case 4:
                w_c0_perfctrl3(0);
@@ -302,9 +308,12 @@ static int __init mipsxx_init(void)
                return -ENODEV;
        }
 
-       reset_counters(counters);
-
-       counters = counters_total_to_per_cpu(counters);
+#ifdef CONFIG_MIPS_MT_SMP
+       cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19);
+       if (!cpu_has_mipsmt_pertccounters)
+               counters = counters_total_to_per_cpu(counters);
+#endif
+       on_each_cpu(reset_counters, (void *)(long)counters, 1);
 
        op_model_mipsxx_ops.num_counters = counters;
        switch (current_cpu_type()) {
@@ -320,6 +329,13 @@ static int __init mipsxx_init(void)
                op_model_mipsxx_ops.cpu_type = "mips/25K";
                break;
 
+       case CPU_1004K:
+#if 0
+               /* FIXME: report as 34K for now */
+               op_model_mipsxx_ops.cpu_type = "mips/1004K";
+               break;
+#endif
+
        case CPU_34K:
                op_model_mipsxx_ops.cpu_type = "mips/34K";
                break;
@@ -355,6 +371,7 @@ static int __init mipsxx_init(void)
                return -ENODEV;
        }
 
+       save_perf_irq = perf_irq;
        perf_irq = mipsxx_perfcount_handler;
 
        return 0;
@@ -365,9 +382,9 @@ static void mipsxx_exit(void)
        int counters = op_model_mipsxx_ops.num_counters;
 
        counters = counters_per_cpu_to_total(counters);
-       reset_counters(counters);
+       on_each_cpu(reset_counters, (void *)(long)counters, 1);
 
-       perf_irq = null_perf_irq;
+       perf_irq = save_perf_irq;
 }
 
 struct op_mips_model op_model_mipsxx_ops = {