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| author | David S. Miller <davem@davemloft.net> | 2010-04-21 01:14:25 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-21 01:14:25 -0700 |
| commit | 87eb367003887cdc81a5d183efea227b5b488961 (patch) | |
| tree | 40f617e25a9364d573e3cd2189c9e7fa56c8a0fe /arch/sparc/kernel/kstack.h | |
| parent | ccb7c7732e2ceb4e81a7806faf1670be9681ccd2 (diff) | |
| parent | 05d17608a69b3ae653ea5c9857283bef3439c733 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-6000.c
net/core/dev.c
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 5247283d1c0..53dfb92e09f 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 */ |