1 /* SPDX-License-Identifier: GPL-2.0-only */
28 	unsigned long low;  member
29 	unsigned long high;  member
41  *               longer valid to unwind to.
43  * @prev_fp:     The fp that pointed to this frame record, or a synthetic value
44  *               of 0. This is used to ensure that within a stack, each
47  *               value of STACK_TYPE_UNKNOWN. This is used to detect a
48  *               transition from one stack to another.
73 			    unsigned long low, unsigned long high,  in on_stack()  argument
76 	if (!low)  in on_stack()
79 	if (sp < low || sp + size < sp || sp + size > high)  in on_stack()
83 		info->low = low;  in on_stack()
84 		info->high = high;  in on_stack()
85 		info->type = type;  in on_stack()
93 	unsigned long low = (unsigned long)raw_cpu_read(irq_stack_ptr);  in on_irq_stack()  local
94 	unsigned long high = low + IRQ_STACK_SIZE;  in on_irq_stack()  local
96 	return on_stack(sp, size, low, high, STACK_TYPE_IRQ, info);  in on_irq_stack()
103 	unsigned long low = (unsigned long)task_stack_page(tsk);  in on_task_stack()  local
104 	unsigned long high = low + THREAD_SIZE;  in on_task_stack()  local
106 	return on_stack(sp, size, low, high, STACK_TYPE_TASK, info);  in on_task_stack()
115 	unsigned long low = (unsigned long)raw_cpu_ptr(overflow_stack);  in on_overflow_stack()  local
116 	unsigned long high = low + OVERFLOW_STACK_SIZE;  in on_overflow_stack()  local
118 	return on_stack(sp, size, low, high, STACK_TYPE_OVERFLOW, info);  in on_overflow_stack()
127  * We can only safely access per-cpu stacks from current in a non-preemptible
135 		info->type = STACK_TYPE_UNKNOWN;  in on_accessible_stack()