diff options
Diffstat (limited to 'arch/mips/include/asm/vdso')
| -rw-r--r-- | arch/mips/include/asm/vdso/gettimeofday.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/mips/include/asm/vdso/gettimeofday.h b/arch/mips/include/asm/vdso/gettimeofday.h index aa20865b288b..c59fe08b0347 100644 --- a/arch/mips/include/asm/vdso/gettimeofday.h +++ b/arch/mips/include/asm/vdso/gettimeofday.h @@ -22,6 +22,8 @@ #include <asm/unistd.h> #include <asm/vdso.h> +#define VDSO_HAS_CLOCK_GETRES 1 + #ifdef CONFIG_MIPS_CLOCK_VSYSCALL static __always_inline long gettimeofday_fallback( @@ -79,6 +81,30 @@ static __always_inline long clock_gettime_fallback( return error ? -ret : ret; } +static __always_inline int clock_getres_fallback( + clockid_t _clkid, + struct __kernel_timespec *_ts) +{ + register struct __kernel_timespec *ts asm("a1") = _ts; + register clockid_t clkid asm("a0") = _clkid; + register long ret asm("v0"); +#if _MIPS_SIM == _MIPS_SIM_ABI64 + register long nr asm("v0") = __NR_clock_getres; +#else + register long nr asm("v0") = __NR_clock_getres_time64; +#endif + register long error asm("a3"); + + asm volatile( + " syscall\n" + : "=r" (ret), "=r" (error) + : "r" (clkid), "r" (ts), "r" (nr) + : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", + "$14", "$15", "$24", "$25", "hi", "lo", "memory"); + + return error ? -ret : ret; +} + #ifdef CONFIG_CSRC_R4K static __always_inline u64 read_r4k_count(void) |