diff options
Diffstat (limited to 'arch/powerpc/include/asm/tlb.h')
| -rw-r--r-- | arch/powerpc/include/asm/tlb.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm/tlb.h index a7eabff27a0f..9138baccebb0 100644 --- a/arch/powerpc/include/asm/tlb.h +++ b/arch/powerpc/include/asm/tlb.h @@ -76,6 +76,19 @@ static inline int mm_is_thread_local(struct mm_struct *mm) return false; return cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm)); } +static inline void mm_reset_thread_local(struct mm_struct *mm) +{ + WARN_ON(atomic_read(&mm->context.copros) > 0); + /* + * It's possible for mm_access to take a reference on mm_users to + * access the remote mm from another thread, but it's not allowed + * to set mm_cpumask, so mm_users may be > 1 here. + */ + WARN_ON(current->mm != mm); + atomic_set(&mm->context.active_cpus, 1); + cpumask_clear(mm_cpumask(mm)); + cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm)); +} #else /* CONFIG_PPC_BOOK3S_64 */ static inline int mm_is_thread_local(struct mm_struct *mm) { |