X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=include%2Fasm-m68knommu%2Fhardirq.h;h=980075bab792741e3ddb253767701062fa3a41cf;hb=refs%2Fheads%2Fvserver;hp=f8dbdf2de0e7d34c8cb368ace64c94e7b348ee43;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git diff --git a/include/asm-m68knommu/hardirq.h b/include/asm-m68knommu/hardirq.h index f8dbdf2de..980075bab 100644 --- a/include/asm-m68knommu/hardirq.h +++ b/include/asm-m68knommu/hardirq.h @@ -1,55 +1,18 @@ #ifndef __M68K_HARDIRQ_H #define __M68K_HARDIRQ_H -#include #include #include +#include typedef struct { unsigned int __softirq_pending; - unsigned int __syscall_count; - struct task_struct * __ksoftirqd_task; } ____cacheline_aligned irq_cpustat_t; #include /* Standard mappings for irq_cpustat_t above */ -/* - * We put the hardirq and softirq counter into the preemption - * counter. The bitmask has the following meaning: - * - * - bits 0-7 are the preemption count (max preemption depth: 256) - * - bits 8-15 are the softirq count (max # of softirqs: 256) - * - bits 16-23 are the hardirq count (max # of hardirqs: 256) - * - * - ( bit 26 is the PREEMPT_ACTIVE flag. ) - * - * PREEMPT_MASK: 0x000000ff - * HARDIRQ_MASK: 0x0000ff00 - * SOFTIRQ_MASK: 0x00ff0000 - */ - -#define PREEMPT_BITS 8 -#define SOFTIRQ_BITS 8 #define HARDIRQ_BITS 8 -#define PREEMPT_SHIFT 0 -#define SOFTIRQ_SHIFT (PREEMPT_SHIFT + PREEMPT_BITS) -#define HARDIRQ_SHIFT (SOFTIRQ_SHIFT + SOFTIRQ_BITS) - -#define __MASK(x) ((1UL << (x))-1) - -#define PREEMPT_MASK (__MASK(PREEMPT_BITS) << PREEMPT_SHIFT) -#define HARDIRQ_MASK (__MASK(HARDIRQ_BITS) << HARDIRQ_SHIFT) -#define SOFTIRQ_MASK (__MASK(SOFTIRQ_BITS) << SOFTIRQ_SHIFT) - -#define hardirq_count() (preempt_count() & HARDIRQ_MASK) -#define softirq_count() (preempt_count() & SOFTIRQ_MASK) -#define irq_count() (preempt_count() & (HARDIRQ_MASK | SOFTIRQ_MASK)) - -#define PREEMPT_OFFSET (1UL << PREEMPT_SHIFT) -#define SOFTIRQ_OFFSET (1UL << SOFTIRQ_SHIFT) -#define HARDIRQ_OFFSET (1UL << HARDIRQ_SHIFT) - /* * The hardirq mask has to be large enough to have * space for potentially all IRQ sources in the system @@ -59,45 +22,4 @@ typedef struct { # error HARDIRQ_BITS is too low! #endif -/* - * Are we doing bottom half or hardware interrupt processing? - * Are we in a softirq context? Interrupt context? - */ -#define in_irq() (hardirq_count()) -#define in_softirq() (softirq_count()) -#define in_interrupt() (irq_count()) - -#define hardirq_trylock() (!in_interrupt()) -#define hardirq_endlock() do { } while (0) - -#define irq_enter() (preempt_count() += HARDIRQ_OFFSET) - -#ifdef CONFIG_PREEMPT -# define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1) -#else -# define IRQ_EXIT_OFFSET HARDIRQ_OFFSET -#endif - -#ifdef CONFIG_PREEMPT -# define in_atomic() (preempt_count() != kernel_locked()) -# define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1) -#else -# define in_atomic() (preempt_count() != 0) -# define IRQ_EXIT_OFFSET HARDIRQ_OFFSET -#endif - -#define irq_exit() \ -do { \ - preempt_count() -= IRQ_EXIT_OFFSET; \ - if (!in_interrupt() && softirq_pending(smp_processor_id())) \ - do_softirq(); \ - preempt_enable_no_resched(); \ -} while (0) - -#ifndef CONFIG_SMP -# define synchronize_irq(irq) barrier() -#else -# error m68knommu SMP is not available -#endif /* CONFIG_SMP */ - #endif /* __M68K_HARDIRQ_H */