sparc64: Initial hw perf counter support.

Only supports one simple counter and only UltraSPARC-IIIi chips.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 7de19dd30f40..391a6ed9a184 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -19,6 +19,7 @@
 #include <linux/delay.h>
 #include <linux/smp.h>
 
+#include <asm/perf_counter.h>
 #include <asm/ptrace.h>
 #include <asm/local.h>
 #include <asm/pcr.h>
@@ -156,7 +157,7 @@ static void report_broken_nmi(int cpu, int *prev_nmi_count)
         atomic_dec(&nmi_active);
 }
 
-static void stop_nmi_watchdog(void *unused)
+void stop_nmi_watchdog(void *unused)
 {
         pcr_ops->write(PCR_PIC_PRIV);
         __get_cpu_var(wd_enabled) = 0;
@@ -210,7 +211,7 @@ error:
         return err;
 }
 
-static void start_nmi_watchdog(void *unused)
+void start_nmi_watchdog(void *unused)
 {
         __get_cpu_var(wd_enabled) = 1;
         atomic_inc(&nmi_active);
@@ -263,6 +264,9 @@ int __init nmi_init(void)
                         atomic_set(&nmi_active, -1);
                 }
         }
+        if (!err)
+                init_hw_perf_counters();
+
         return err;
 }