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    Subject[patch 04/17] get_cycles() : powerpc64 HAVE_GET_CYCLES
    This patch selects HAVE_GET_CYCLES and makes sure get_cycles_barrier() and
    get_cycles_rate() are implemented.

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    CC: benh@kernel.crashing.org
    CC: paulus@samba.org
    CC: David Miller <davem@davemloft.net>
    CC: Linus Torvalds <torvalds@linux-foundation.org>
    CC: Andrew Morton <akpm@linux-foundation.org>
    CC: Ingo Molnar <mingo@redhat.com>
    CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
    CC: Thomas Gleixner <tglx@linutronix.de>
    CC: Steven Rostedt <rostedt@goodmis.org>
    CC: linux-arch@vger.kernel.org
    ---
    arch/powerpc/Kconfig | 1 +
    arch/powerpc/include/asm/timex.h | 11 +++++++++++
    2 files changed, 12 insertions(+)

    Index: linux.trees.git/arch/powerpc/Kconfig
    ===================================================================
    --- linux.trees.git.orig/arch/powerpc/Kconfig 2008-11-14 17:38:28.000000000 -0500
    +++ linux.trees.git/arch/powerpc/Kconfig 2008-11-26 06:49:00.000000000 -0500
    @@ -121,6 +121,7 @@ config PPC
    select HAVE_DMA_ATTRS if PPC64
    select USE_GENERIC_SMP_HELPERS if SMP
    select HAVE_OPROFILE
    + select HAVE_GET_CYCLES if PPC64

    config EARLY_PRINTK
    bool
    Index: linux.trees.git/arch/powerpc/include/asm/timex.h
    ===================================================================
    --- linux.trees.git.orig/arch/powerpc/include/asm/timex.h 2008-11-12 18:15:48.000000000 -0500
    +++ linux.trees.git/arch/powerpc/include/asm/timex.h 2008-11-26 06:49:00.000000000 -0500
    @@ -7,6 +7,7 @@
    * PowerPC architecture timex specifications
    */

    +#include <asm/time.h>
    #include <asm/cputable.h>
    #include <asm/reg.h>

    @@ -46,5 +47,15 @@ static inline cycles_t get_cycles(void)
    #endif
    }

    +static inline cycles_t get_cycles_rate(void)
    +{
    + return tb_ticks_per_sec;
    +}
    +
    +static inline void get_cycles_barrier(void)
    +{
    + isync();
    +}
    +
    #endif /* __KERNEL__ */
    #endif /* _ASM_POWERPC_TIMEX_H */
    --
    Mathieu Desnoyers
    OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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