linux-kernel - [PATCH 52/58] x86: vdso: Add prototypes for __vdso

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Date:	Sun, 18 Nov 2012 21:28:31 -0800
From:	Josh Triplett <josh@...htriplett.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	John Stultz <john.stultz@...aro.org>,
	Andy Lutomirski <luto@...capital.net>,
	Josh Triplett <josh@...htriplett.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 52/58] x86: vdso: Add prototypes for __vdso_* functions

arch/x86/vdso/vclock_gettime.c and arch/x86/vdso/vgetcpu.c define
several functions prefixed by __vdso_*, used in the alias definitions
for the actual vdso symbols calls.  Add prototypes of these functions
right before their definitions, to satisfy gcc (-Wmissing-prototypes)
and Sparse (-Wdecl).

arch/x86/vdso/vclock_gettime.c:161:45: warning: no previous prototype for ‘__vdso_clock_gettime’ [-Wmissing-prototypes]
arch/x86/vdso/vclock_gettime.c:185:45: warning: no previous prototype for ‘__vdso_gettimeofday’ [-Wmissing-prototypes]
arch/x86/vdso/vclock_gettime.c:213:48: warning: no previous prototype for ‘__vdso_time’ [-Wmissing-prototypes]
arch/x86/vdso/vgetcpu.c:16:1: warning: no previous prototype for ‘__vdso_getcpu’ [-Wmissing-prototypes]

Signed-off-by: Josh Triplett <josh@...htriplett.org>
---
 arch/x86/vdso/vclock_gettime.c |    3 +++
 arch/x86/vdso/vgetcpu.c        |    2 ++
 2 files changed, 5 insertions(+)

diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 4df6c37..bc8b276 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -158,6 +158,7 @@ notrace static int do_monotonic_coarse(struct timespec *ts)
 	return 0;
 }
 
+int __vdso_clock_gettime(clockid_t clock, struct timespec *ts);
 notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
 {
 	int ret = VCLOCK_NONE;
@@ -182,6 +183,7 @@ notrace int __vdso_clock_gettime(clockid_t clock, struct timespec *ts)
 int clock_gettime(clockid_t, struct timespec *)
 	__attribute__((weak, alias("__vdso_clock_gettime")));
 
+int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
 notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz)
 {
 	long ret = VCLOCK_NONE;
@@ -210,6 +212,7 @@ int gettimeofday(struct timeval *, struct timezone *)
  * This will break when the xtime seconds get inaccurate, but that is
  * unlikely
  */
+time_t __vdso_time(time_t *t);
 notrace time_t __vdso_time(time_t *t)
 {
 	/* This is atomic on x86_64 so we don't need any locks. */
diff --git a/arch/x86/vdso/vgetcpu.c b/arch/x86/vdso/vgetcpu.c
index 5463ad5..b55350f 100644
--- a/arch/x86/vdso/vgetcpu.c
+++ b/arch/x86/vdso/vgetcpu.c
@@ -12,6 +12,8 @@
 #include <asm/vsyscall.h>
 #include <asm/vgtod.h>
 
+long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused);
+
 notrace long
 __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
 {
-- 
1.7.10.4

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