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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm26/hardirq.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm26/hardirq.h')
-rw-r--r-- | include/asm-arm26/hardirq.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/asm-arm26/hardirq.h b/include/asm-arm26/hardirq.h new file mode 100644 index 000000000000..791ee1da9bfa --- /dev/null +++ b/include/asm-arm26/hardirq.h @@ -0,0 +1,41 @@ +#ifndef __ASM_HARDIRQ_H +#define __ASM_HARDIRQ_H + +#include <linux/config.h> +#include <linux/cache.h> +#include <linux/threads.h> + +typedef struct { + unsigned int __softirq_pending; +} ____cacheline_aligned irq_cpustat_t; + +#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ + +#define HARDIRQ_BITS 8 + +/* + * The hardirq mask has to be large enough to have space + * for potentially all IRQ sources in the system nesting + * on a single CPU: + */ +#if (1 << HARDIRQ_BITS) < NR_IRQS +# error HARDIRQ_BITS is too low! +#endif + +#define irq_enter() (preempt_count() += HARDIRQ_OFFSET) + +#ifndef CONFIG_SMP + +extern asmlinkage void __do_softirq(void); + +#define irq_exit() \ + do { \ + preempt_count() -= IRQ_EXIT_OFFSET; \ + if (!in_interrupt() && local_softirq_pending()) \ + __do_softirq(); \ + preempt_enable_no_resched(); \ + } while (0) +#endif + + +#endif /* __ASM_HARDIRQ_H */ |