[PATCH RFC 13/14] sparc64: vdso: Implement clock_gettime64()

[Thomas Weißschuh]

To be y2038-safe, 32-bit userspace needs to explicitly call the 64-bit safe
time APIs.

Implement clock_gettime64() in the 32-bit vDSO.

Signed-off-by: Thomas Weißschuh <thomas.weisssc...@linutronix.de>
---
 arch/sparc/vdso/vclock_gettime.c    | 8 ++++++++
 arch/sparc/vdso/vdso32/vdso32.lds.S | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c
index 
093a7ff4dafce1cf0af5af4c303bef86e159858a..1d9859392e4cfd285349cf9155ca1fc25d3a7b41
 100644
--- a/arch/sparc/vdso/vclock_gettime.c
+++ b/arch/sparc/vdso/vclock_gettime.c
@@ -48,4 +48,12 @@ int __vdso_clock_gettime(clockid_t clock, struct 
old_timespec32 *ts)
 int clock_gettime(clockid_t, struct old_timespec32 *)
        __weak __alias(__vdso_clock_gettime);
 
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
+{
+       return __cvdso_clock_gettime(clock, ts);
+}
+
+int clock_gettime64(clockid_t, struct __kernel_timespec *)
+       __weak __alias(__vdso_clock_gettime64);
+
 #endif
diff --git a/arch/sparc/vdso/vdso32/vdso32.lds.S 
b/arch/sparc/vdso/vdso32/vdso32.lds.S
index 
53575ee154c492f9503efdd8f995ac2a035203c7..a14e4f77e6f2222b855df27cc7a0d0a4f98bd4ac
 100644
--- a/arch/sparc/vdso/vdso32/vdso32.lds.S
+++ b/arch/sparc/vdso/vdso32/vdso32.lds.S
@@ -17,6 +17,8 @@ VERSION {
        global:
                clock_gettime;
                __vdso_clock_gettime;
+               clock_gettime64;
+               __vdso_clock_gettime64;
                gettimeofday;
                __vdso_gettimeofday;
        local: *;

-- 
2.50.1