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| author | Kumar Gala <galak@kernel.crashing.org> | 2008-04-30 03:49:55 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-06-02 14:54:42 -0500 |
| commit | bcf0b0880710409420a4e3b15dbf4b9a63542c0b (patch) | |
| tree | ca1c813648ea075b772112237fde3ccfe3ddb776 /include/asm-powerpc/irq.h | |
| parent | c054065bc10a7ee2bcf78b5bc95f4b4d9bdc923a (diff) | |
| download | linux-bcf0b0880710409420a4e3b15dbf4b9a63542c0b.tar.gz | |
[POWERPC] Move to runtime allocated exception stacks
For the additonal exception levels (critical, debug, machine check) on
40x/book-e we were using "static" allocations of the stack in the
associated head.S.
Move to a runtime allocation to make the code a bit easier to read as
we mimic how we handle IRQ stacks. Its also a bit easier to setup the
stack with a "dummy" thread_info in C code.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/irq.h')
| -rw-r--r-- | include/asm-powerpc/irq.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-powerpc/irq.h b/include/asm-powerpc/irq.h index 5089deb8fec3f..1ef8e304e0eac 100644 --- a/include/asm-powerpc/irq.h +++ b/include/asm-powerpc/irq.h @@ -619,6 +619,19 @@ struct pt_regs; #define __ARCH_HAS_DO_SOFTIRQ +#if defined(CONFIG_BOOKE) || defined(CONFIG_40x) +/* + * Per-cpu stacks for handling critical, debug and machine check + * level interrupts. + */ +extern struct thread_info *critirq_ctx[NR_CPUS]; +extern struct thread_info *dbgirq_ctx[NR_CPUS]; +extern struct thread_info *mcheckirq_ctx[NR_CPUS]; +extern void exc_lvl_ctx_init(void); +#else +#define exc_lvl_ctx_init() +#endif + #ifdef CONFIG_IRQSTACKS /* * Per-cpu stacks for handling hard and soft interrupts. |