path: root/init
diff options
authorEric W. Biederman <>2005-10-30 14:59:41 -0800
committerLinus Torvalds <>2005-10-30 17:37:13 -0800
commitf2b36db692b7ff6972320ad9839ae656a3b0ee3e (patch)
tree110387d2557a156d6b9453ea0c45d392b47796c2 /init
parent29b70081f7cb094513d5189e82d3478b50777a28 (diff)
[PATCH] i386: move apic init in init_IRQs
All kinds of ugliness exists because we don't initialize the apics during init_IRQs. - We calibrate jiffies in non apic mode even when we are using apics. - We have to have special code to initialize the apics when non-smp. - The legacy i8259 must exist and be setup correctly, even when we won't use it past initialization. - The kexec on panic code must restore the state of the io_apics. - init/main.c needs a special case for !smp smp_init on x86 In addition to pure code movement I needed a couple of non-obvious changes: - Move setup_boot_APIC_clock into APIC_late_time_init for simplicity. - Use cpu_khz to generate a better approximation of loops_per_jiffies so I can verify the timer interrupt is working. - Call setup_apic_nmi_watchdog again after cpu_khz is initialized on the boot cpu. Signed-off-by: Eric W. Biederman <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'init')
1 files changed, 0 insertions, 11 deletions
diff --git a/init/main.c b/init/main.c
index f142d4035341..4075d97e94b1 100644
--- a/init/main.c
+++ b/init/main.c
@@ -64,10 +64,6 @@
-#include <asm/smp.h>
* Versions of gcc older than that listed below may actually compile
* and link okay, but the end product can have subtle run time bugs.
@@ -314,14 +310,7 @@ extern void setup_arch(char **);
#ifndef CONFIG_SMP
-static void __init smp_init(void)
- APIC_init_uniprocessor();
#define smp_init() do { } while (0)
static inline void setup_per_cpu_areas(void) { }
static inline void smp_prepare_cpus(unsigned int maxcpus) { }