Re: Sparc32 - sched_clock missing

[Andrew Morton <akpm@osdl.org>]

Georg Chini <georg.chini@triaton-webhosting.com> wrote:
>
> Hello out there,
> 
> tried to build Kernel 2.6.0-test6-bk4 on my
> sparc32 machine and found that the function
> sched_clock is missing in time.c. Can anyone
> tell me what I have to put there? Please CC
> to me.
> 

This is the minimal version to get you going.

A better implementation would use a higer-resolution counter, if the
hardware has such a thing.


diff -puN arch/sparc/kernel/time.c~sparc32-sched_clock arch/sparc/kernel/time.c
--- 25/arch/sparc/kernel/time.c~sparc32-sched_clock	2003-10-04 11:53:19.000000000 -0700
+++ 25-akpm/arch/sparc/kernel/time.c	2003-10-04 11:53:41.000000000 -0700
@@ -617,3 +617,12 @@ static int set_rtc_mmss(unsigned long no
 		return -1;
 	}
 }
+
+/*
+ * Returns nanoseconds
+  */
+
+unsigned long long sched_clock(void)
+{
+	return (unsigned long long)jiffies * (1000000000 / HZ);
+}

_