diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-08-14 12:19:59 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-14 12:19:59 +0200 |
| commit | 8d7ccaa545490cdffdfaff0842436a8dd85cf47b (patch) | |
| tree | 8129b5907161bc6ae26deb3645ce1e280c5e1f51 /arch/powerpc/include/asm/timex.h | |
| parent | b2139aa0eec330c711c5a279db361e5ef1178e78 (diff) | |
| parent | 30a2f3c60a84092c8084dfe788b710f8d0768cd4 (diff) | |
Merge commit 'v2.6.27-rc3' into x86/prototypes
Conflicts:
include/asm-x86/dma-mapping.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/include/asm/timex.h')
| -rw-r--r-- | arch/powerpc/include/asm/timex.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/timex.h b/arch/powerpc/include/asm/timex.h new file mode 100644 index 00000000000..c55e14f7ef4 --- /dev/null +++ b/arch/powerpc/include/asm/timex.h @@ -0,0 +1,50 @@ +#ifndef _ASM_POWERPC_TIMEX_H +#define _ASM_POWERPC_TIMEX_H + +#ifdef __KERNEL__ + +/* + * PowerPC architecture timex specifications + */ + +#include <asm/cputable.h> +#include <asm/reg.h> + +#define CLOCK_TICK_RATE 1024000 /* Underlying HZ */ + +typedef unsigned long cycles_t; + +static inline cycles_t get_cycles(void) +{ +#ifdef __powerpc64__ + return mftb(); +#else + cycles_t ret; + + /* + * For the "cycle" counter we use the timebase lower half. + * Currently only used on SMP. + */ + + ret = 0; + + __asm__ __volatile__( + "97: mftb %0\n" + "99:\n" + ".section __ftr_fixup,\"a\"\n" + ".align 2\n" + "98:\n" + " .long %1\n" + " .long 0\n" + " .long 97b-98b\n" + " .long 99b-98b\n" + " .long 0\n" + " .long 0\n" + ".previous" + : "=r" (ret) : "i" (CPU_FTR_601)); + return ret; +#endif +} + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_TIMEX_H */ |