On Thu, 2005-12-22 at 23:11 +0000, John Rigg wrote:
> On Wednesday Dec 21 2005 John Rigg wrote:
> > 2.6.14-rc5-rt4
> > failed to compile
> > on x86_64 SMP
> >
> > kernel/hrtimer.c: In function 'hrtimer_cancel':
> > kernel/hrtimer.c:673: error: 'HRTIMER_SOFTIRQ' undeclared (first use in this function)
> > kernel/hrtimer.c:673: error: (Each undeclared identifier is reported only once
> > kernel/hrtimer.c:673: error: for each function it appears in.)
> > make[1]: *** [kernel/hrtimer.o] Error 1
> > make: *** [kernel] Error 2
>
> The obvious way to get it to compile would be to use CONFIG_HIGH_RES_TIMERS=y .
> Stupid question: how do I enable this on x86_64 SMP?
> I can't find it in menuconfig and if I edit .config manually my edits just
> get deleted (obviously I'm doing something wrong). I've tried grepping the
> source and googling, but haven't been able to find the answer.
Oops, sorry that was my fault. Here's the fix.
I've successfully compiled this on a x86_64. Since that's the box I'm
writing this email on, I'll try booting it later.
-- Steve
Index: linux-2.6.15-rc5-rt4/kernel/hrtimer.c
===================================================================
--- linux-2.6.15-rc5-rt4.orig/kernel/hrtimer.c 2005-12-22 20:55:30.000000000 -0500
+++ linux-2.6.15-rc5-rt4/kernel/hrtimer.c 2005-12-22 20:56:47.000000000 -0500
@@ -670,7 +670,9 @@
if (ret >= 0)
return ret;
+#ifdef CONFIG_HIGH_RES_TIMERS
wait_for_softirq(HRTIMER_SOFTIRQ);
+#endif
}
}
-
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