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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-05-31 14:07:15 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-05-31 14:07:15 +0400 |
| commit | e37c83c06c2690157a989df40dc99a6b61c9ea15 (patch) | |
| tree | 024dfb8b2c9abeec9ca7cb0c0136c276d9aacc91 /arch/sparc/kernel/kstack.h | |
| parent | ce1f7d30766f6549db6fa0b9e595e0d26a5b7d9a (diff) | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
| download | linux-e37c83c06c2690157a989df40dc99a6b61c9ea15.tar.xz | |
Merge commit 'v2.6.35-rc1' into for-2.6.36
Diffstat (limited to 'arch/sparc/kernel/kstack.h')
| -rw-r--r-- | arch/sparc/kernel/kstack.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/sparc/kernel/kstack.h b/arch/sparc/kernel/kstack.h index 5247283d1c03..53dfb92e09fb 100644 --- a/arch/sparc/kernel/kstack.h +++ b/arch/sparc/kernel/kstack.h @@ -61,4 +61,23 @@ check_magic: } +static inline __attribute__((always_inline)) void *set_hardirq_stack(void) +{ + void *orig_sp, *sp = hardirq_stack[smp_processor_id()]; + + __asm__ __volatile__("mov %%sp, %0" : "=r" (orig_sp)); + if (orig_sp < sp || + orig_sp > (sp + THREAD_SIZE)) { + sp += THREAD_SIZE - 192 - STACK_BIAS; + __asm__ __volatile__("mov %0, %%sp" : : "r" (sp)); + } + + return orig_sp; +} + +static inline __attribute__((always_inline)) void restore_hardirq_stack(void *orig_sp) +{ + __asm__ __volatile__("mov %0, %%sp" : : "r" (orig_sp)); +} + #endif /* _KSTACK_H */ |