diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 06:49:40 -0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 07:05:32 -0400 |
| commit | e0204409df29fe1b7d18f81dfc3ae6f9d90e7a63 (patch) | |
| tree | 66f670c0f182d02185f2f3ea6bb7bb97c165ff3b /include/asm-sparc64/mmu_context.h | |
| parent | f3c681c028846bd5d39f563909409832a295ca69 (diff) | |
[SPARC64]: dr-cpu unconfigure support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64/mmu_context.h')
| -rw-r--r-- | include/asm-sparc64/mmu_context.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h index 8d129032013e..9fc225ed5500 100644 --- a/include/asm-sparc64/mmu_context.h +++ b/include/asm-sparc64/mmu_context.h | |||
| @@ -76,6 +76,9 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str | |||
| 76 | unsigned long ctx_valid, flags; | 76 | unsigned long ctx_valid, flags; |
| 77 | int cpu; | 77 | int cpu; |
| 78 | 78 | ||
| 79 | if (unlikely(mm == &init_mm)) | ||
| 80 | return; | ||
| 81 | |||
| 79 | spin_lock_irqsave(&mm->context.lock, flags); | 82 | spin_lock_irqsave(&mm->context.lock, flags); |
| 80 | ctx_valid = CTX_VALID(mm->context); | 83 | ctx_valid = CTX_VALID(mm->context); |
| 81 | if (!ctx_valid) | 84 | if (!ctx_valid) |