[RFC patch 13/15] LTTng timestamp sh

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2007, Giuseppe Cavallaro <peppe.cavallaro@st.com>
+ *                     Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * SuperH definitions for tracing system
+ */
+
+#ifndef _ASM_SH_LTT_H
+#define _ASM_SH_LTT_H
+
+#include <linux/timer.h>
+#include <asm/clock.h>
+
+extern u64 ltt_read_synthetic_tsc(void);
+
+static inline u32 ltt_get_timestamp32(void)
+{
+	return get_cycles();
+}
+
+static inline u64 ltt_get_timestamp64(void)
+{
+	return ltt_read_synthetic_tsc();
+}
+
+static inline void ltt_add_timestamp(unsigned long ticks)
+{ }
+
+static inline unsigned int ltt_frequency(void)
+{
+	unsigned long rate;
+	struct clk *tmu1_clk;
+
+	tmu1_clk = clk_get(NULL, "tmu1_clk");
+	rate = (clk_get_rate(tmu1_clk));
+
+	return (unsigned int)(rate);
+}
+
+static inline u32 ltt_freq_scale(void)
+{
+	return 1;
+}
+
+#endif /* _ASM_SH_LTT_H */

@@ -6,12 +6,18 @@
 #ifndef __ASM_SH_TIMEX_H
 #define __ASM_SH_TIMEX_H
 
-#define CLOCK_TICK_RATE		(CONFIG_SH_PCLK_FREQ / 4) /* Underlying HZ */
+#include <linux/io.h>
+#include <asm/cpu/timer.h>
+
+#define CLOCK_TICK_RATE		(HZ * 100000UL)
 
 typedef unsigned long long cycles_t;
 
 static __inline__ cycles_t get_cycles (void)
 {
+#ifdef CONFIG_LTT
+	return 0xffffffff - ctrl_inl(TMU1_TCNT);
+#endif
 	return 0;
 }
 

@@ -11,6 +11,8 @@ config SUPERH
 	select HAVE_CLK
 	select HAVE_IDE
 	select HAVE_OPROFILE
+	select HAVE_LTT_CLOCK
+	select HAVE_LTT_SYNTHETIC_TSC
 	select HAVE_GENERIC_DMA_COHERENT
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems