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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-10-18 03:04:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 14:37:19 -0700 |
| commit | d5d8c5976d6adeddb8208c240460411e2198b393 (patch) | |
| tree | bc7ee9762366c3790f0c0c84e8de73487b5ef261 /Documentation/RCU/checklist.txt | |
| parent | e42837bcd35b75bb59ae5d3e62f87be1aeeb05c3 (diff) | |
| download | blackbird-obmc-linux-d5d8c5976d6adeddb8208c240460411e2198b393.tar.gz blackbird-obmc-linux-d5d8c5976d6adeddb8208c240460411e2198b393.zip | |
freezer: do not send signals to kernel threads
The freezer should not send signals to kernel threads, since that may lead to
subtle problems. In particular, commit
b74d0deb968e1f85942f17080eace015ce3c332c has changed recalc_sigpending_tsk()
so that it doesn't clear TIF_SIGPENDING. For this reason, if the freezer
continues to send fake signals to kernel threads and the freezing of kernel
threads fails, some of them may be running with TIF_SIGPENDING set forever.
Accordingly, recalc_sigpending_tsk() shouldn't set the task's TIF_SIGPENDING
flag if TIF_FREEZE is set.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/RCU/checklist.txt')
0 files changed, 0 insertions, 0 deletions
