diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 14:38:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 14:40:31 -0700 |
| commit | e3d2f927f788adcdabc42f8a1616f6cc56c53bbe (patch) | |
| tree | ff051e33cff49e23f4c4ef84360f22cf7a1998c9 /arch/parisc/include/asm/hardirq.h | |
| parent | a9b6148d25f15ddfe9d7a7f3e526fdb64e7cf7da (diff) | |
| parent | 81e192d6ce303b6792aa38ff35f41a1a7357f23a (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
parisc: convert to generic compat_sys_ptrace
parisc: add rtc platform driver
parisc: initialize unwinder much earlier
parisc: add new syscalls
parisc: hijack jump to start_kernel
parisc: add pdc_coproc_cfg_unlocked and set_firmware_width_unlocked
parisc: move include/asm-parisc to arch/parisc/include/asm
parisc: move pdc_result to real2.S
parisc: unify CCIO_COLLECT_STATS implementation
parisc: add arch/parisc/kernel/.gitignore
parisc: ropes.h - fix <asm-parisc/*> -> <asm/*>
parisc: parisc-agp - fix <asm-parisc/*> -> <asm/*>
Resolve remove/rename conflict: include/asm-parisc/a.out.h is no longer
relevant.
Diffstat (limited to 'arch/parisc/include/asm/hardirq.h')
| -rw-r--r-- | arch/parisc/include/asm/hardirq.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/hardirq.h b/arch/parisc/include/asm/hardirq.h new file mode 100644 index 00000000000..ce93133d511 --- /dev/null +++ b/arch/parisc/include/asm/hardirq.h @@ -0,0 +1,29 @@ +/* hardirq.h: PA-RISC hard IRQ support. + * + * Copyright (C) 2001 Matthew Wilcox <matthew@wil.cx> + * + * The locking is really quite interesting. There's a cpu-local + * count of how many interrupts are being handled, and a global + * lock. An interrupt can only be serviced if the global lock + * is free. You can't be sure no more interrupts are being + * serviced until you've acquired the lock and then checked + * all the per-cpu interrupt counts are all zero. It's a specialised + * br_lock, and that's exactly how Sparc does it. We don't because + * it's more locking for us. This way is lock-free in the interrupt path. + */ + +#ifndef _PARISC_HARDIRQ_H +#define _PARISC_HARDIRQ_H + +#include <linux/threads.h> +#include <linux/irq.h> + +typedef struct { + unsigned long __softirq_pending; /* set_bit is used on this */ +} ____cacheline_aligned irq_cpustat_t; + +#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */ + +void ack_bad_irq(unsigned int irq); + +#endif /* _PARISC_HARDIRQ_H */ |