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vdso: Add prototype for __vdso_clock_getres_time64() 

For consistency with __vdso_clock_gettime64() there should also be a
64-bit variant of clock_getres(). This will allow the extension of
CONFIG_COMPAT_32BIT_TIME to the vDSO and finally the removal of 32-bit
time types from the kernel and UAPI. The generic vDSO library already
provides nearly all necessary building blocks for architectures to
provide this function. Only a prototype is missing.

Add the prototype to the generic header so architectures can start
providing this function.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20251223-vdso-compat-time32-v1-1-97ea7a06a543@linutronix.de
master
Thomas Weißschuh 2025-12-23 07:59:12 +01:00 committed by Thomas Gleixner
parent 0f61b1860c
commit b205656daf
1 changed files with 1 additions and 0 deletions
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include/vdso/gettime.h
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@ -20,5 +20,6 @@ int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
__kernel_old_time_t __vdso_time(__kernel_old_time_t *t);
int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
int __vdso_clock_getres_time64(clockid_t clock, struct __kernel_timespec *ts);
#endif