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The VDSO functions are defined as globals in the kernel sources but intended to be called from userspace, so there is no need to declare them in a kernel side header. Without a prototype, this now causes warnings such as arch/mips/vdso/vgettimeofday.c:14:5: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes] arch/mips/vdso/vgettimeofday.c:28:5: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes] arch/mips/vdso/vgettimeofday.c:36:5: error: no previous prototype for '__vdso_clock_getres' [-Werror=missing-prototypes] arch/mips/vdso/vgettimeofday.c:42:5: error: no previous prototype for '__vdso_clock_gettime64' [-Werror=missing-prototypes] arch/sparc/vdso/vclock_gettime.c:254:1: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes] arch/sparc/vdso/vclock_gettime.c:282:1: error: no previous prototype for '__vdso_clock_gettime_stick' [-Werror=missing-prototypes] arch/sparc/vdso/vclock_gettime.c:307:1: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes] arch/sparc/vdso/vclock_gettime.c:343:1: error: no previous prototype for '__vdso_gettimeofday_stick' [-Werror=missing-prototypes] Most architectures have already added workarounds for these by adding declarations somewhere, but since these are all compatible, we should really just have one copy, with an #ifdef check for the 32-bit vs 64-bit variant and use that everywhere. Unfortunately, the sparc an um versions are currently incompatible since they never added support for __vdso_clock_gettime64() in 32-bit userland. For the moment, I'm leaving this one out, as I can't easily test it and it requires a larger rework. Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
24 lines
755 B
C
24 lines
755 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _VDSO_GETTIME_H
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#define _VDSO_GETTIME_H
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#include <linux/types.h>
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struct __kernel_timespec;
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struct timezone;
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#if !defined(CONFIG_64BIT) || defined(BUILD_VDSO32_64)
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struct old_timespec32;
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int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res);
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int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts);
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#else
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int __vdso_clock_getres(clockid_t clock, struct __kernel_timespec *res);
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int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts);
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#endif
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__kernel_old_time_t __vdso_time(__kernel_old_time_t *t);
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int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
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int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
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#endif
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