[tip: x86/vdso] x86/vdso: Fix -Wmissing-prototypes warnings

["tip-bot2 for Borislav Petkov (AMD)" <tip-bot2@linutronix.de>]

The following commit has been merged into the x86/vdso branch of tip:

Commit-ID:     dac0da428f8dfb23666ab4ea54a7768c152b857a
Gitweb:        https://git.kernel.org/tip/dac0da428f8dfb23666ab4ea54a7768c152b857a
Author:        Borislav Petkov (AMD) <bp@alien8.de>
AuthorDate:    Tue, 07 Feb 2023 16:13:24 +01:00
Committer:     Borislav Petkov (AMD) <bp@alien8.de>
CommitterDate: Tue, 07 Feb 2023 18:23:17 +01:00

x86/vdso: Fix -Wmissing-prototypes warnings

Fix those:

  In file included from arch/x86/entry/vdso/vdso32/vclock_gettime.c:4:
arch/x86/entry/vdso/vdso32/../vclock_gettime.c:70:5: warning: no previous prototype for ‘__vdso_clock_gettime64’ [-Wmissing-prototypes]
   70 | int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts)
      |

In file included from arch/x86/entry/vdso/vdso32/vgetcpu.c:3:
arch/x86/entry/vdso/vdso32/../vgetcpu.c:13:1: warning: no previous prototype for ‘__vdso_getcpu’ [-Wmissing-prototypes]
   13 | __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
      | ^~~~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/202302070742.iYcnoJwk-lkp@intel.com
---
 arch/x86/include/asm/vdso/gettimeofday.h | 2 ++
 arch/x86/include/asm/vdso/processor.h    | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/arch/x86/include/asm/vdso/gettimeofday.h b/arch/x86/include/asm/vdso/gettimeofday.h
index 1936f21..4cf6794 100644
--- a/arch/x86/include/asm/vdso/gettimeofday.h
+++ b/arch/x86/include/asm/vdso/gettimeofday.h
@@ -318,6 +318,8 @@ u64 vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
 }
 #define vdso_calc_delta vdso_calc_delta
 
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
+
 #endif /* !__ASSEMBLY__ */
 
 #endif /* __ASM_VDSO_GETTIMEOFDAY_H */
diff --git a/arch/x86/include/asm/vdso/processor.h b/arch/x86/include/asm/vdso/processor.h
index 57b1a70..2cbce97 100644
--- a/arch/x86/include/asm/vdso/processor.h
+++ b/arch/x86/include/asm/vdso/processor.h
@@ -18,6 +18,10 @@ static __always_inline void cpu_relax(void)
 	rep_nop();
 }
 
+struct getcpu_cache;
+
+notrace long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused);
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_VDSO_PROCESSOR_H */