1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __SPARC_MMU_CONTEXT_H 3 #define __SPARC_MMU_CONTEXT_H 4 5 #ifndef __ASSEMBLY__ 6 7 #include <asm-generic/mm_hooks.h> 8 9 /* Initialize a new mmu context. This is invoked when a new 10 * address space instance (unique or shared) is instantiated. 11 */ 12 #define init_new_context init_new_context 13 int init_new_context(struct task_struct *tsk, struct mm_struct *mm); 14 15 /* Destroy a dead context. This occurs when mmput drops the 16 * mm_users count to zero, the mmaps have been released, and 17 * all the page tables have been flushed. Our job is to destroy 18 * any remaining processor-specific state. 19 */ 20 #define destroy_context destroy_context 21 void destroy_context(struct mm_struct *mm); 22 23 /* Switch the current MM context. */ 24 void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, 25 struct task_struct *tsk); 26 27 /* Activate a new MM instance for the current task. */ 28 #define activate_mm(active_mm, mm) switch_mm((active_mm), (mm), NULL) 29 30 #include <asm-generic/mmu_context.h> 31 32 #endif /* !(__ASSEMBLY__) */ 33 34 #endif /* !(__SPARC_MMU_CONTEXT_H) */ 35