ARM: 8932/1: Add clock_gettime64 entry point

fvincenzo · Russell King · commit 74d06efb9c2f · 2019-11-15T22:21:15.000Z
With the release of Linux 5.1 has been added a new syscall,
clock_gettime64, that provided a 64 bit time value for a specified
clock_ID to make the kernel Y2038 safe on 32 bit architectures.

Update the arm specific vDSO library accordingly with what it has
been done for the kernel syscall exposing the clock_gettime64 entry
point.

Signed-off-by: Vincenzo Frascino &lt;vincenzo.frascino@arm.com&gt;
Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
diff --git a/arch/arm/vdso/vdso.lds.S b/arch/arm/vdso/vdso.lds.S
@@ -72,6 +72,7 @@ VERSION
 		__vdso_clock_gettime;
 		__vdso_gettimeofday;
 		__vdso_clock_getres;
+		__vdso_clock_gettime64;
 	local: *;
 	};
 }
diff --git a/arch/arm/vdso/vgettimeofday.c b/arch/arm/vdso/vgettimeofday.c
@@ -13,6 +13,12 @@ int __vdso_clock_gettime(clockid_t clock,
 	return __cvdso_clock_gettime32(clock, ts);
 }
 
+int __vdso_clock_gettime64(clockid_t clock,
+			   struct __kernel_timespec *ts)
+{
+	return __cvdso_clock_gettime(clock, ts);
+}
+
 int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
 			struct timezone *tz)
 {

Original file line number	Diff line number	Diff line change
`@@ -72,6 +72,7 @@ VERSION`
`72`	`72`	`__vdso_clock_gettime;`
`73`	`73`	`__vdso_gettimeofday;`
`74`	`74`	`__vdso_clock_getres;`
	`75`	`+ __vdso_clock_gettime64;`
`75`	`76`	`local: *;`
`76`	`77`	`};`
`77`	`78`	`}`
Original file line number	Diff line number	Diff line change
`@@ -13,6 +13,12 @@ int __vdso_clock_gettime(clockid_t clock,`
`13`	`13`	`return __cvdso_clock_gettime32(clock, ts);`
`14`	`14`	`}`
`15`	`15`
	`16`	`+int __vdso_clock_gettime64(clockid_t clock,`
	`17`	`+ struct __kernel_timespec *ts)`
	`18`	`+{`
	`19`	`+ return __cvdso_clock_gettime(clock, ts);`
	`20`	`+}`
	`21`	`+`
`16`	`22`	`int __vdso_gettimeofday(struct __kernel_old_timeval *tv,`
`17`	`23`	`struct timezone *tz)`
`18`	`24`	`{`