diff options
author | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
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committer | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
commit | 86d688984deefa3ae5a802880c11f2b408b5d6cf (patch) | |
tree | 7ea5e8189b0a774626d3ed7c3c87df2495a4c4a0 /arch/alpha/include/asm/hardirq.h | |
parent | 93c06cbbf9fea5d5be1778febb7fa9ab1a74e5f5 (diff) | |
parent | 4c246edd2550304df5b766cc841584b2bb058843 (diff) |
Merge branch 'master' into next
Diffstat (limited to 'arch/alpha/include/asm/hardirq.h')
-rw-r--r-- | arch/alpha/include/asm/hardirq.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/hardirq.h b/arch/alpha/include/asm/hardirq.h new file mode 100644 index 00000000000..d953e234daa --- /dev/null +++ b/arch/alpha/include/asm/hardirq.h @@ -0,0 +1,30 @@ +#ifndef _ALPHA_HARDIRQ_H +#define _ALPHA_HARDIRQ_H + +#include <linux/threads.h> +#include <linux/cache.h> + + +/* entry.S is sensitive to the offsets of these fields */ +typedef struct { + unsigned long __softirq_pending; +} ____cacheline_aligned irq_cpustat_t; + +#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ + +void ack_bad_irq(unsigned int irq); + +#define HARDIRQ_BITS 12 + +/* + * The hardirq mask has to be large enough to have + * space for potentially nestable IRQ sources in the system + * to nest on a single CPU. On Alpha, interrupts are masked at the CPU + * by IPL as well as at the system level. We only have 8 IPLs (UNIX PALcode) + * so we really only have 8 nestable IRQs, but allow some overhead + */ +#if (1 << HARDIRQ_BITS) < 16 +#error HARDIRQ_BITS is too low! +#endif + +#endif /* _ALPHA_HARDIRQ_H */ |