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>
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 7de19dd..391a6ed 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 @@
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 @@
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 @@
atomic_set(&nmi_active, -1);
}
}
+ if (!err)
+ init_hw_perf_counters();
+
return err;
}