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    Subject[patch 09/17] Powerpc : Trace clock
    Powerpc implementation of trace clock with get_tb().

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    CC: benh@kernel.crashing.org
    CC: paulus@samba.org
    CC: linux-arch@vger.kernel.org
    ---
    arch/powerpc/Kconfig | 1
    arch/powerpc/include/asm/trace-clock.h | 47 +++++++++++++++++++++++++++++++++
    2 files changed, 48 insertions(+)

    Index: linux.trees.git/arch/powerpc/Kconfig
    ===================================================================
    --- linux.trees.git.orig/arch/powerpc/Kconfig 2008-11-26 06:49:00.000000000 -0500
    +++ linux.trees.git/arch/powerpc/Kconfig 2008-11-26 06:51:50.000000000 -0500
    @@ -114,6 +114,7 @@ config PPC
    select HAVE_IOREMAP_PROT
    select HAVE_EFFICIENT_UNALIGNED_ACCESS
    select HAVE_KPROBES
    + select HAVE_TRACE_CLOCK
    select HAVE_ARCH_KGDB
    select HAVE_KRETPROBES
    select HAVE_ARCH_TRACEHOOK
    Index: linux.trees.git/arch/powerpc/include/asm/trace-clock.h
    ===================================================================
    --- /dev/null 1970-01-01 00:00:00.000000000 +0000
    +++ linux.trees.git/arch/powerpc/include/asm/trace-clock.h 2008-11-26 06:51:50.000000000 -0500
    @@ -0,0 +1,47 @@
    +/*
    + * Copyright (C) 2005,2008 Mathieu Desnoyers
    + *
    + * Trace clock PowerPC definitions.
    + *
    + * Use get_tb() directly to insure reading a 64-bits value on powerpc 32.
    + */
    +
    +#ifndef _ASM_TRACE_CLOCK_H
    +#define _ASM_TRACE_CLOCK_H
    +
    +#include <linux/timex.h>
    +#include <linux/time.h>
    +#include <asm/processor.h>
    +
    +static inline u32 trace_clock_read32(void)
    +{
    + return get_tbl();
    +}
    +
    +static inline u64 trace_clock_read64(void)
    +{
    + return get_tb();
    +}
    +
    +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_TRACE_CLOCK_H */
    --
    Mathieu Desnoyers
    OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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