[RFC patch 12/15] LTTng timestamp sparc64

Mathieu Desnoyers
2008-10-17T00:04:50Z

[-- Attachment #1: lttng-timestamp-sparc64.patch --]
[-- Type: text/plain, Size: 1791 bytes --]

Implement LTTng timestamping for sparc64

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/ltt.h | 35 +++++++++++++++++++++++++++++++++++
arch/sparc64/Kconfig | 1 +
2 files changed, 36 insertions(+)

Index: linux-2.6-lttng/arch/sparc/include/asm/ltt.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6-lttng/arch/sparc/include/asm/ltt.h 2008-10-16 19:04:23.000000000 -0400
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008, Mathieu Desnoyers
+ *
+ * SPARC64 definitions for tracing system
+ */
+
+#ifndef _ASM_SPARC_LTT_H
+#define _ASM_SPARC_LTT_H
+
+#include <linux/timex.h>
+
+static inline u32 ltt_get_timestamp32(void)
+{
+ return get_cycles();
+}
+
+static inline u64 ltt_get_timestamp64(void)
+{
+ return get_cycles();
+}
+
+static inline void ltt_add_timestamp(unsigned long ticks)
+{ }
+
+static inline unsigned int ltt_frequency(void)
+{
+ return CLOCK_TICK_RATE;
+}
+
+static inline u32 ltt_freq_scale(void)
+{
+ return 1;
+}
+
+#endif /* _ASM_SPARC_LTT_H */
Index: linux-2.6-lttng/arch/sparc64/Kconfig
===================================================================
--- linux-2.6-lttng.orig/arch/sparc64/Kconfig 2008-10-16 18:57:15.000000000 -0400
+++ linux-2.6-lttng/arch/sparc64/Kconfig 2008-10-16 19:02:55.000000000 -0400
@@ -19,6 +19,7 @@ config SPARC64
select HAVE_ARCH_KGDB
select USE_GENERIC_SMP_HELPERS if SMP
select HAVE_ARCH_TRACEHOOK
+ select HAVE_LTT_CLOCK

config GENERIC_TIME
bool

--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal