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| author | David S. Miller <davem@davemloft.net> | 2010-04-11 05:44:30 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-11 05:44:30 -0400 |
| commit | 4a1032faac94ebbf647460ae3e06fc21146eb280 (patch) | |
| tree | 7f31b97beb0406faa1523e619289ad0ab07c9787 /Documentation/volatile-considered-harmful.txt | |
| parent | ae4e8d63b5619d4d95f1d2bfa2b836caa6e62d06 (diff) | |
| parent | 0eddb519b9127c73d53db4bf3ec1d45b13f844d1 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'Documentation/volatile-considered-harmful.txt')
| -rw-r--r-- | Documentation/volatile-considered-harmful.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/volatile-considered-harmful.txt b/Documentation/volatile-considered-harmful.txt index 991c26a6ef64..db0cb228d64a 100644 --- a/Documentation/volatile-considered-harmful.txt +++ b/Documentation/volatile-considered-harmful.txt | |||
| @@ -63,9 +63,9 @@ way to perform a busy wait is: | |||
| 63 | cpu_relax(); | 63 | cpu_relax(); |
| 64 | 64 | ||
| 65 | The cpu_relax() call can lower CPU power consumption or yield to a | 65 | The cpu_relax() call can lower CPU power consumption or yield to a |
| 66 | hyperthreaded twin processor; it also happens to serve as a memory barrier, | 66 | hyperthreaded twin processor; it also happens to serve as a compiler |
| 67 | so, once again, volatile is unnecessary. Of course, busy-waiting is | 67 | barrier, so, once again, volatile is unnecessary. Of course, busy- |
| 68 | generally an anti-social act to begin with. | 68 | waiting is generally an anti-social act to begin with. |
| 69 | 69 | ||
| 70 | There are still a few rare situations where volatile makes sense in the | 70 | There are still a few rare situations where volatile makes sense in the |
| 71 | kernel: | 71 | kernel: |