diff options
Diffstat (limited to 'arch/sparc/mm/tsb.c')
| -rw-r--r-- | arch/sparc/mm/tsb.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c index 75a04c1a2383..f5edc28aa3a5 100644 --- a/arch/sparc/mm/tsb.c +++ b/arch/sparc/mm/tsb.c @@ -546,6 +546,9 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) mm->context.sparc64_ctx_val = 0UL; + mm->context.tag_store = NULL; + spin_lock_init(&mm->context.tag_lock); + #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) /* We reset them to zero because the fork() page copying * will re-increment the counters as the parent PTEs are @@ -611,4 +614,22 @@ void destroy_context(struct mm_struct *mm) } spin_unlock_irqrestore(&ctx_alloc_lock, flags); + + /* If ADI tag storage was allocated for this task, free it */ + if (mm->context.tag_store) { + tag_storage_desc_t *tag_desc; + unsigned long max_desc; + unsigned char *tags; + + tag_desc = mm->context.tag_store; + max_desc = PAGE_SIZE/sizeof(tag_storage_desc_t); + for (i = 0; i < max_desc; i++) { + tags = tag_desc->tags; + tag_desc->tags = NULL; + kfree(tags); + tag_desc++; + } + kfree(mm->context.tag_store); + mm->context.tag_store = NULL; + } } |