1 files changed, 66 insertions, 0 deletions
diff --git a/arch/sh/include/asm/trace-clock.h b/arch/sh/include/asm/trace-clock.h
new file mode 100644
index 00000000000..152d54c4181
--- /dev/null
+++ b/arch/sh/include/asm/trace-clock.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2007,2008 Giuseppe Cavallaro <peppe.cavallaro@st.com>
+ *                         Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * Trace clock definitions for SuperH.
+ */
+
+#ifndef _ASM_SH_TRACE_CLOCK_H
+#define _ASM_SH_TRACE_CLOCK_H
+
+#include <linux/clocksource.h>
+#include <asm/clock.h>
+
+/*
+ * Number of hardware clock bits. The higher order bits are expected to be 0.
+ * If the hardware clock source has more than 32 bits, the bits higher than the
+ * 32nd will be truncated by a cast to a 32 bits unsigned. Range : 1 - 32.
+ * (too few bits would be unrealistic though, since we depend on the timer to
+ * detect the overflows).
+ */
+#define TC_HW_BITS			32
+
+/* Expected maximum interrupt latency in ms : 15ms, *2 for security */
+#define TC_EXPECTED_INTERRUPT_LATENCY	30
+
+extern u64 trace_clock_read_synthetic_tsc(void);
+extern u64 sh_get_clock_frequency(void);
+extern u32 sh_read_timer_count(void);
+extern void get_synthetic_tsc(void);
+extern void put_synthetic_tsc(void);
+
+static inline u32 trace_clock_read32(void)
+{
+	return sh_read_timer_count();
+}
+
+static inline u64 trace_clock_read64(void)
+{
+	return trace_clock_read_synthetic_tsc();
+}
+
+static inline u64 trace_clock_frequency(void)
+{
+	return sh_get_clock_frequency();
+}
+
+static inline u32 trace_clock_freq_scale(void)
+{
+	return 1;
+}
+
+static inline int get_trace_clock(void)
+{
+	get_synthetic_tsc();
+	return 0;
+}
+
+static inline void put_trace_clock(void)
+{
+	put_synthetic_tsc();
+}
+
+static inline void set_trace_clock_is_sync(int state)
+{
+}
+#endif /* _ASM_SH_TRACE_CLOCK_H */