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| 12 | * Released under the General Public License (GPL). |
12 | * Released under the General Public License (GPL). |
| 13 | * |
13 | * |
| 14 | * In the debug case, 1 means unlocked, 0 means locked. (the values |
14 | * In the debug case, 1 means unlocked, 0 means locked. (the values |
| 15 | * are inverted, to catch initialization bugs) |
15 | * are inverted, to catch initialization bugs) |
| 16 | * |
16 | * |
| 17 | * No atomicity anywhere, we are on UP. |
17 | * No atomicity anywhere, we are on UP. However, we still need |
| - | 18 | * the compiler barriers, because we do not want the compiler to |
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| - | 19 | * move potentially faulting instructions (notably user accesses) |
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| - | 20 | * into the locked sequence, resulting in non-atomic execution. |
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| 18 | */ |
21 | */ |
| Line 19... | Line 22... | ||
| 19 | 22 | ||
| 20 | #ifdef CONFIG_DEBUG_SPINLOCK |
23 | #ifdef CONFIG_DEBUG_SPINLOCK |