#include <linux/threads.h>
#include <linux/sched.h>
#include <linux/cache.h>
+#include <linux/interrupt.h>
#include <asm/lowcore.h>
/* irq_cpustat_t is unused currently, but could be converted
#define local_softirq_pending() (S390_lowcore.softirq_pending)
-/* this is always called with cpu == smp_processor_id() at the moment */
-static inline __u32
-softirq_pending(unsigned int cpu)
-{
- if (cpu == smp_processor_id())
- return local_softirq_pending();
- return lowcore_ptr[cpu]->softirq_pending;
-}
-
#define __ARCH_IRQ_STAT
+#define __ARCH_HAS_DO_SOFTIRQ
-/*
- * 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
- * SOFTIRQ_MASK: 0x0000ff00
- * HARDIRQ_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 SOFTIRQ_MASK (__MASK(SOFTIRQ_BITS) << SOFTIRQ_SHIFT)
-#define HARDIRQ_MASK (__MASK(HARDIRQ_BITS) << HARDIRQ_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)
-
-/*
- * 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() \
-do { \
- (preempt_count() += HARDIRQ_OFFSET); \
-} while(0)
-
-
-extern void do_call_softirq(void);
extern void account_ticks(struct pt_regs *);
-#define invoke_softirq() do_call_softirq()
-
-#ifdef CONFIG_PREEMPT
-# define in_atomic() ((preempt_count() & ~PREEMPT_ACTIVE) != 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() && local_softirq_pending()) \
- /* Use the async. stack for softirq */ \
- do_call_softirq(); \
- preempt_enable_no_resched(); \
-} while (0)
-
#endif /* __ASM_HARDIRQ_H */