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author | Cigy Cyriac <CCyriac@fusionio.com> | 2010-08-10 19:18:11 -0400 |
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committer | Jens Axboe <jaxboe@fusionio.com> | 2010-08-10 19:18:11 -0400 |
commit | 5f39d8f797fcf01bd94b89ef7ed2bdb76deb2601 (patch) | |
tree | a7a8fb386ecb39880abed804f9975258157a0458 | |
parent | 304a47c7d94f407cc72a87025679a67f02288447 (diff) | |
download | fio-5f39d8f797fcf01bd94b89ef7ed2bdb76deb2601.tar.gz |
Add get_cpu_clock() for powerpc
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
-rw-r--r-- | arch/arch-ppc.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arch-ppc.h b/arch/arch-ppc.h index 06115387..87198699 100644 --- a/arch/arch-ppc.h +++ b/arch/arch-ppc.h @@ -42,6 +42,23 @@ static inline int arch_ffz(unsigned long bitmask) return 32; return __ilog2(bitmask & -bitmask); } + +static inline unsigned long long get_cpu_clock(void) +{ + unsigned int tbl, tbu0, tbu1; + unsigned long long ret; + + do { + __asm__ __volatile__ ("mftbu %0" : "=r"(tbu0)); + __asm__ __volatile__ ("mftb %0" : "=r"(tbl) ); + __asm__ __volatile__ ("mftbu %0" : "=r"(tbu1)); + } while (tbu0 != tbu1); + + ret = (((unsigned long long)tbu0) << 32) | tbl; + return ret; +} + #define ARCH_HAVE_FFZ +#define ARCH_HAVE_CPU_CLOCK #endif |