[RFC patch 10/18] Sparc64 : Trace clock

Mathieu Desnoyers
2008-11-07T05:44:19Z

[-- Attachment #1: sparc64-trace-clock.patch --]
[-- Type: text/plain, Size: 2002 bytes --]

Implement sparc64 trace clock.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: David Miller <davem@davemloft.net>
CC: linux-arch@vger.kernel.org
---
arch/sparc/include/asm/trace-clock.h | 46 +++++++++++++++++++++++++++++++++++
arch/sparc64/Kconfig | 1
2 files changed, 47 insertions(+)

Index: linux.trees.git/arch/sparc64/Kconfig
===================================================================
--- linux.trees.git.orig/arch/sparc64/Kconfig 2008-11-07 00:09:35.000000000 -0500
+++ linux.trees.git/arch/sparc64/Kconfig 2008-11-07 00:12:26.000000000 -0500
@@ -16,6 +16,7 @@ config SPARC64
select HAVE_GET_CYCLES
select HAVE_LMB
select HAVE_ARCH_KGDB
+ select HAVE_TRACE_CLOCK
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_ARCH_TRACEHOOK
select ARCH_WANT_OPTIONAL_GPIOLIB
Index: linux.trees.git/arch/sparc/include/asm/trace-clock.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux.trees.git/arch/sparc/include/asm/trace-clock.h 2008-11-07 00:12:04.000000000 -0500
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2008, Mathieu Desnoyers
+ *
+ * Trace clock definitions for Sparc64.
+ */
+
+#ifndef _ASM_SPARC_TRACE_CLOCK_H
+#define _ASM_SPARC_TRACE_CLOCK_H
+
+#include <linux/timex.h>
+
+static inline u32 trace_clock_read32(void)
+{
+ return get_cycles();
+}
+
+static inline u64 trace_clock_read64(void)
+{
+ return get_cycles();
+}
+
+static inline void trace_clock_add_timestamp(unsigned long ticks)
+{ }
+
+static inline unsigned int trace_clock_frequency(void)
+{
+ return get_cycles_rate();
+}
+
+static inline u32 trace_clock_freq_scale(void)
+{
+ return 1;
+}
+
+static inline void get_trace_clock(void)
+{
+}
+
+static inline void put_trace_clock(void)
+{
+}
+
+static inline void set_trace_clock_is_sync(int state)
+{
+}
+#endif /* _ASM_SPARC_TRACE_CLOCK_H */

--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68