fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-x86_64 / hardirq.h

diff --git a/include/asm-x86_64/hardirq.h b/include/asm-x86_64/hardirq.h
index d3c08b2..95d5e09 100644 (file)
--- a/include/asm-x86_64/hardirq.h
+++ b/include/asm-x86_64/hardirq.h
@@ -1,102 +1,23 @@
 #ifndef __ASM_HARDIRQ_H
 #define __ASM_HARDIRQ_H
 
-#include <linux/config.h>
 #include <linux/threads.h>
 #include <linux/irq.h>
 #include <asm/pda.h>
+#include <asm/apic.h>
 
-#define __ARCH_IRQ_STAT 1
-
-/* Generate a lvalue for a pda member. Should fix softirq.c instead to use
-   special access macros. This would generate better code. */ 
-#define __IRQ_STAT(cpu,member) (read_pda(me)->member)
-
-#include <linux/irq_cpustat.h> /* 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)
+/* We can have at most NR_VECTORS irqs routed to a cpu at a time */
+#define MAX_HARDIRQS_PER_CPU NR_VECTORS
 
-#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
- * nesting on a single CPU:
- */
-#if (1 << HARDIRQ_BITS) < NR_IRQS
-# 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 __ARCH_IRQ_STAT 1
 
-#define irq_enter()            (preempt_count() += HARDIRQ_OFFSET)
-#define nmi_enter()            (irq_enter())
-#define nmi_exit()             (preempt_count() -= HARDIRQ_OFFSET)
+#define local_softirq_pending() read_pda(__softirq_pending)
 
+#define __ARCH_SET_SOFTIRQ_PENDING 1
 
-#ifdef CONFIG_PREEMPT
-# include <linux/smp_lock.h>
-# 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() && softirq_pending(smp_processor_id())) \
-                       do_softirq();                                   \
-               preempt_enable_no_resched();                            \
-} while (0)
+#define set_softirq_pending(x) write_pda(__softirq_pending, (x))
+#define or_softirq_pending(x)  or_pda(__softirq_pending, (x))
 
-#ifndef CONFIG_SMP
-# define synchronize_irq(irq)  barrier()
-#else
-  extern void synchronize_irq(unsigned int irq);
-#endif /* CONFIG_SMP */
+extern void ack_bad_irq(unsigned int irq);
 
 #endif /* __ASM_HARDIRQ_H */