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Subject2.6.13-rc6-rt15 won't compile without HR-Timers
Ingo,

Without the attached patch 2.6.13-rc6-rt15 won't compile for me with
CONFIG_HIGH_RES_TIMERS not configured.

--
kr
--- linux-2.6.13/include/linux/timer.h.orig 2005-08-24 11:15:22.000000000 -0500
+++ linux-2.6.13/include/linux/timer.h 2005-08-24 11:15:35.000000000 -0500
@@ -76,6 +76,7 @@

#ifdef CONFIG_HIGH_RES_TIMERS
extern void add_hres_timer_us(struct timer_list *timer, unsigned long usec);
+extern void init_hrtimers(void);
#else
#define add_hres_timer_us(t,exp) mod_timer(t,(exp*HZ)/1000000)
#endif
@@ -125,7 +126,6 @@
#define del_singleshot_timer_sync(t) del_timer_sync(t)

extern void init_timers(void);
-extern void init_hrtimers(void);
extern void run_local_timers(void);
extern void it_real_fn(unsigned long);

--- linux-2.6.13/kernel/timer.c.orig 2005-08-24 11:16:04.000000000 -0500
+++ linux-2.6.13/kernel/timer.c 2005-08-24 11:06:32.000000000 -0500
@@ -1920,9 +1920,9 @@
.notifier_call = timer_cpu_notify,
};

+#ifdef CONFIG_HIGH_RES_TIMERS
void __init init_hrtimers(void)
{
-#ifdef CONFIG_HIGH_RES_TIMERS
open_softirq(HRTIMER_SOFTIRQ,
(void (*)(struct softirq_action*))hrtimers_expire_timers,
NULL);
@@ -1931,8 +1931,8 @@
printk("arch_cycles_per_jiffy: %ld\n", arch_cycles_per_jiffy);
printk("hr_max_jiffies_expiry: %d\n", hr_max_jiffies_expiry);
printk("hr_max_expiry: %d\n", hr_max_expiry);
-#endif
}
+#endif

void __init init_timers(void)
{
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