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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-22 17:12:37 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-22 17:12:37 +1000
commit8725f25acc656c1522d48a6746055099efdaca4c (patch)
treee241424fa58178ed6c2a95a4eb931ea83dbea33c /arch/x86/kernel/apic_64.c
parentc69cccc95fe4b90dde5fe33e6a3b77880b534fa4 (diff)
parent93ded9b8fd42abe2c3607097963d8de6ad9117eb (diff)
Merge commit 'origin/master'
Manually fixed up: drivers/net/fs_enet/fs_enet-main.c
Diffstat (limited to 'arch/x86/kernel/apic_64.c')
-rw-r--r--arch/x86/kernel/apic_64.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 1e3d32e27c14..7f1f030da7ee 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -54,7 +54,7 @@ EXPORT_SYMBOL_GPL(local_apic_timer_c2_ok);
/*
* Debug level, exported for io_apic.c
*/
-int apic_verbosity;
+unsigned int apic_verbosity;
/* Have we found an MP table */
int smp_found_config;
@@ -314,7 +314,7 @@ static void setup_APIC_timer(void)
#define TICK_COUNT 100000000
-static void __init calibrate_APIC_clock(void)
+static int __init calibrate_APIC_clock(void)
{
unsigned apic, apic_start;
unsigned long tsc, tsc_start;
@@ -368,6 +368,17 @@ static void __init calibrate_APIC_clock(void)
clockevent_delta2ns(0xF, &lapic_clockevent);
calibration_result = result / HZ;
+
+ /*
+ * Do a sanity check on the APIC calibration result
+ */
+ if (calibration_result < (1000000 / HZ)) {
+ printk(KERN_WARNING
+ "APIC frequency too slow, disabling apic timer\n");
+ return -1;
+ }
+
+ return 0;
}
/*
@@ -394,14 +405,7 @@ void __init setup_boot_APIC_clock(void)
}
printk(KERN_INFO "Using local APIC timer interrupts.\n");
- calibrate_APIC_clock();
-
- /*
- * Do a sanity check on the APIC calibration result
- */
- if (calibration_result < (1000000 / HZ)) {
- printk(KERN_WARNING
- "APIC frequency too slow, disabling apic timer\n");
+ if (calibrate_APIC_clock()) {
/* No broadcast on UP ! */
if (num_possible_cpus() > 1)
setup_APIC_timer();
@@ -1337,7 +1341,7 @@ early_param("apic", apic_set_verbosity);
static __init int setup_disableapic(char *str)
{
disable_apic = 1;
- clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
+ setup_clear_cpu_cap(X86_FEATURE_APIC);
return 0;
}
early_param("disableapic", setup_disableapic);