Merge branch 'next' into for-linus
[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 #ifdef CONFIG_VMAP_STACK
16 /*
17  * To ensure that VMAP'd stack overflow detection works correctly, all VMAP'd
18  * stacks need to have the same alignment.
19  */
20 static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
21 {
22         void *p;
23
24         p = __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
25                         __builtin_return_address(0));
26         return kasan_reset_tag(p);
27 }
28 #endif /* CONFIG_VMAP_STACK */
29
30 #endif /* _ASM_RISCV_IRQ_STACK_H */