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 */ arch_alloc_vmap_stack(size_t stack_size,int node)20static 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 */ 31