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authorMarcos Paulo de Souza <marcos.mage@gmail.com>2012-02-21 23:57:47 +0100
committerRafael J. Wysocki <rjw@sisk.pl>2012-03-04 23:08:54 +0100
commit37f08be11be9a7d9351fb1b9b408259519a126f3 (patch)
tree7edf402614ae9f36a6e9226b380072cec969c847 /kernel/power/process.c
parent8671bbc1bd0442ef0eab27f7d56216431c490820 (diff)
downloadop-kernel-dev-37f08be11be9a7d9351fb1b9b408259519a126f3.zip
op-kernel-dev-37f08be11be9a7d9351fb1b9b408259519a126f3.tar.gz
PM / Freezer: Remove references to TIF_FREEZE in comments
This patch removes all the references in the code about the TIF_FREEZE flag removed by commit a3201227f803ad7fd43180c5195dbe5a2bf998aa freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE There still are some references to TIF_FREEZE in Documentation/power/freezing-of-tasks.txt, but it looks like that documentation needs more thorough work to reflect how the new freezer works, and hence merely removing the references to TIF_FREEZE won't really help. So I have not touched that part in this patch. Suggested-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Marcos Paulo de Souza <marcos.mage@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/process.c')
-rw-r--r--kernel/power/process.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 6aeb5ef..0d2aeb2 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -53,11 +53,9 @@ static int try_to_freeze_tasks(bool user_only)
* It is "frozen enough". If the task does wake
* up, it will immediately call try_to_freeze.
*
- * Because freeze_task() goes through p's
- * scheduler lock after setting TIF_FREEZE, it's
- * guaranteed that either we see TASK_RUNNING or
- * try_to_stop() after schedule() in ptrace/signal
- * stop sees TIF_FREEZE.
+ * Because freeze_task() goes through p's scheduler lock, it's
+ * guaranteed that TASK_STOPPED/TRACED -> TASK_RUNNING
+ * transition can't race with task state testing here.
*/
if (!task_is_stopped_or_traced(p) &&
!freezer_should_skip(p))
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