forked from luck/tmp_suning_uos_patched
mips: Add clock_getres entry point
The generic vDSO library provides an implementation of clock_getres() that can be leveraged by each architecture. Add clock_getres() entry point on mips. Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Paul Burton <paul.burton@mips.com>
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@ -22,6 +22,8 @@
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#include <asm/unistd.h>
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#include <asm/vdso.h>
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#define VDSO_HAS_CLOCK_GETRES 1
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#ifdef CONFIG_MIPS_CLOCK_VSYSCALL
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static __always_inline long gettimeofday_fallback(
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@ -79,6 +81,30 @@ static __always_inline long clock_gettime_fallback(
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return error ? -ret : ret;
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}
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static __always_inline int clock_getres_fallback(
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clockid_t _clkid,
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struct __kernel_timespec *_ts)
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{
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register struct __kernel_timespec *ts asm("a1") = _ts;
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register clockid_t clkid asm("a0") = _clkid;
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register long ret asm("v0");
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#if _MIPS_SIM == _MIPS_SIM_ABI64
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register long nr asm("v0") = __NR_clock_getres;
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#else
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register long nr asm("v0") = __NR_clock_getres_time64;
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#endif
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register long error asm("a3");
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asm volatile(
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" syscall\n"
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: "=r" (ret), "=r" (error)
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: "r" (clkid), "r" (ts), "r" (nr)
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: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
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"$14", "$15", "$24", "$25", "hi", "lo", "memory");
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return error ? -ret : ret;
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}
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#ifdef CONFIG_CSRC_R4K
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static __always_inline u64 read_r4k_count(void)
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@ -95,6 +95,7 @@ VERSION
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global:
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__vdso_clock_gettime;
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__vdso_gettimeofday;
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__vdso_clock_getres;
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#endif
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local: *;
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};
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@ -23,6 +23,12 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
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return __cvdso_gettimeofday(tv, tz);
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}
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int __vdso_clock_getres(clockid_t clock_id,
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struct old_timespec32 *res)
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{
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return __cvdso_clock_getres_time32(clock_id, res);
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}
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#else
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int __vdso_clock_gettime(clockid_t clock,
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@ -37,4 +43,10 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
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return __cvdso_gettimeofday(tv, tz);
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}
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int __vdso_clock_getres(clockid_t clock_id,
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struct __kernel_timespec *res)
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{
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return __cvdso_clock_getres(clock_id, res);
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}
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#endif
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