Merge remote-tracking branch 'torvalds/master' into perf-tools-next
[linux-2.6-microblaze.git] / arch / riscv / include / asm / irq_stack.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef _ASM_RISCV_IRQ_STACK_H
4 #define _ASM_RISCV_IRQ_STACK_H
5
6 #include <linux/bug.h>
7 #include <linux/gfp.h>
8 #include <linux/kconfig.h>
9 #include <linux/vmalloc.h>
10 #include <linux/pgtable.h>
11 #include <asm/thread_info.h>
12
13 DECLARE_PER_CPU(ulong *, irq_stack_ptr);
14
15 asmlinkage void call_on_irq_stack(struct pt_regs *regs,
16                                   void (*func)(struct pt_regs *));
17
18 #ifdef CONFIG_VMAP_STACK
19 /*
20  * To ensure that VMAP'd stack overflow detection works correctly, all VMAP'd
21  * stacks need to have the same alignment.
22  */
23 static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
24 {
25         void *p;
26
27         p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
28                         __builtin_return_address(0));
29         return kasan_reset_tag(p);
30 }
31 #endif /* CONFIG_VMAP_STACK */
32
33 #endif /* _ASM_RISCV_IRQ_STACK_H */