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| author | Eric W. Biederman <ebiederm@xmission.com> | 2005-10-30 23:59:41 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-31 02:37:13 +0100 |
| commit | f2b36db692b7ff6972320ad9839ae656a3b0ee3e (patch) | |
| tree | 110387d2557a156d6b9453ea0c45d392b47796c2 /Documentation/atomic_ops.txt | |
| parent | [PATCH] i386 nmi_watchdog: Merge check_nmi_watchdog fixes from x86_64 (diff) | |
| download | linux-f2b36db692b7ff6972320ad9839ae656a3b0ee3e.tar.xz linux-f2b36db692b7ff6972320ad9839ae656a3b0ee3e.zip | |
[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 <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/atomic_ops.txt')
0 files changed, 0 insertions, 0 deletions