Let the calibration code fill in calibration_result directly and
move the variable on top of the file.
Fixup a printk w/o log level while at it.
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
---
arch/x86_64/kernel/apic.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
Index: linux-2.6.22-rc6-mm/arch/x86_64/kernel/apic.c
===================================================================
--- linux-2.6.22-rc6-mm.orig/arch/x86_64/kernel/apic.c 2007-07-15 17:40:05.000000000 +0200
+++ linux-2.6.22-rc6-mm/arch/x86_64/kernel/apic.c 2007-07-15 17:48:57.000000000 +0200
@@ -56,6 +56,8 @@ static struct resource lapic_resource =
.flags = IORESOURCE_MEM | IORESOURCE_BUSY,
};
+static unsigned int calibration_result;
+
/*
* cpu_mask that denotes the CPUs that needs timer interrupt coming in as
* IPIs in place of local APIC timers
@@ -822,7 +824,7 @@ static void setup_APIC_timer(unsigned in
#define TICK_COUNT 100000000
-static int __init calibrate_APIC_clock(void)
+static void __init calibrate_APIC_clock(void)
{
unsigned apic, apic_start;
unsigned long tsc, tsc_start;
@@ -856,17 +858,14 @@ static int __init calibrate_APIC_clock(v
result = (apic_start - apic) * 1000L * tsc_khz /
(tsc - tsc_start);
}
- printk("result %d\n", result);
-
+ printk(KERN_DEBUG "APIC timer calibration result %d\n", result);
printk(KERN_INFO "Detected %d.%03d MHz APIC timer.\n",
result / 1000 / 1000, result / 1000 % 1000);
- return result * APIC_DIVISOR / HZ;
+ calibration_result = result * APIC_DIVISOR / HZ;
}
-static unsigned int calibration_result;
-
void __init setup_boot_APIC_clock (void)
{
if (disable_apic_timer) {
@@ -879,7 +878,7 @@ void __init setup_boot_APIC_clock (void)
local_irq_disable();
- calibration_result = calibrate_APIC_clock();
+ calibrate_APIC_clock();
/*
* Now set up the timer for real.
*/
@@ -986,8 +985,6 @@ void setup_APIC_extended_lvt(unsigned ch
apic_write(reg, v);
}
-#undef APIC_DIVISOR
-
/*
* Local timer interrupt handler. It does both profiling and
* process statistics/rescheduling.
--
-
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