read_current_timer() cleanups

- All implementations can be __devinit

- The function prototypes were in asm/timex.h but they all must be the same,
  so create a single declaration in linux/timex.h.

- uninline the sparc64 version to match the other architectures

- Don't bother #defining ARCH_HAS_READ_CURRENT_TIMER to a particular value.

[ezk@cs.sunysb.edu: fix build]
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 14 insertions, 3 deletions

diff --git a/arch/avr32/lib/delay.c b/arch/avr32/lib/delay.c
index b3bc0b56e2c6..9aa8800830f3 100644
--- a/arch/avr32/lib/delay.c
+++ b/arch/avr32/lib/delay.c
@@ -12,13 +12,15 @@
 
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/timex.h>
 #include <linux/param.h>
 #include <linux/types.h>
+#include <linux/init.h>
 
 #include <asm/processor.h>
 #include <asm/sysreg.h>
 
-int read_current_timer(unsigned long *timer_value)
+int __devinit read_current_timer(unsigned long *timer_value)
 {
         *timer_value = sysreg_read(COUNT);
         return 0;
diff --git a/arch/sparc64/kernel/time.c b/arch/sparc64/kernel/time.c
index 4352ee4d8dac..d204f1ab1d4c 100644
--- a/arch/sparc64/kernel/time.c
+++ b/arch/sparc64/kernel/time.c
@@ -1707,6 +1707,11 @@ static void __exit rtc_mini_exit(void)
         misc_deregister(&rtc_mini_dev);
 }
 
+int __devinit read_current_timer(unsigned long *timer_val)
+{
+        *timer_val = tick_ops->get_tick();
+        return 0;
+}
 
 module_init(rtc_mini_init);
 module_exit(rtc_mini_exit);
diff --git a/arch/x86/lib/delay_32.c b/arch/x86/lib/delay_32.c
index aad9d95469dc..4535e6d147ad 100644
--- a/arch/x86/lib/delay_32.c
+++ b/arch/x86/lib/delay_32.c
@@ -12,8 +12,10 @@
 
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/timex.h>
 #include <linux/preempt.h>
 #include <linux/delay.h>
+#include <linux/init.h>
 
 #include <asm/processor.h>
 #include <asm/delay.h>
@@ -63,7 +65,7 @@ void use_tsc_delay(void)
         delay_fn = delay_tsc;
 }
 
-int read_current_timer(unsigned long *timer_val)
+int __devinit read_current_timer(unsigned long *timer_val)
 {
         if (delay_fn == delay_tsc) {
                 rdtscl(*timer_val);
diff --git a/arch/x86/lib/delay_64.c b/arch/x86/lib/delay_64.c
index 45cdd3fbd91c..bbc610518516 100644
--- a/arch/x86/lib/delay_64.c
+++ b/arch/x86/lib/delay_64.c
@@ -10,8 +10,10 @@
 
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/timex.h>
 #include <linux/preempt.h>
 #include <linux/delay.h>
+#include <linux/init.h>
 
 #include <asm/delay.h>
 #include <asm/msr.h>
@@ -20,7 +22,7 @@
 #include <asm/smp.h>
 #endif
 
-int read_current_timer(unsigned long *timer_value)
+int __devinit read_current_timer(unsigned long *timer_value)
 {
         rdtscll(*timer_value);
         return 0;