4 #define IRQ_STACK_SIZE THREAD_SIZE
5 #define IRQ_STACK_START_SP THREAD_START_SP
9 #include <linux/percpu.h>
11 #include <asm-generic/irq.h>
12 #include <asm/thread_info.h>
16 DECLARE_PER_CPU(unsigned long [IRQ_STACK_SIZE/sizeof(long)], irq_stack);
19 * The highest address on the stack, and the first to be used. Used to
20 * find the dummy-stack frame put down by el?_irq() in entry.S.
22 #define IRQ_STACK_PTR(cpu) ((unsigned long)per_cpu(irq_stack, cpu) + IRQ_STACK_START_SP)
25 * The offset from irq_stack_ptr where entry.S will store the original
26 * stack pointer. Used by unwind_frame() and dump_backtrace().
28 #define IRQ_STACK_TO_TASK_STACK(ptr) *((unsigned long *)(ptr - 0x10));
30 extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
32 static inline int nr_legacy_irqs(void)
37 static inline bool on_irq_stack(unsigned long sp, int cpu)
39 /* variable names the same as kernel/stacktrace.c */
40 unsigned long low = (unsigned long)per_cpu(irq_stack, cpu);
41 unsigned long high = low + IRQ_STACK_START_SP;
43 return (low <= sp && sp <= high);
46 #endif /* !__ASSEMBLER__ */