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| author | Tejun Heo <[email protected]> | 2011-08-18 08:06:53 +0000 |
|---|---|---|
| committer | Jiri Kosina <[email protected]> | 2011-08-23 07:16:29 +0000 |
| commit | 1d927c3b5a4005a2ebc5356e7e1eec436e15fa22 (patch) | |
| tree | 86a97fc15d4ea1d4fcd5bf5d92c31bb130ba6d75 /lib/dynamic_debug.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb... (diff) | |
| download | kernel-1d927c3b5a4005a2ebc5356e7e1eec436e15fa22.tar.gz kernel-1d927c3b5a4005a2ebc5356e7e1eec436e15fa22.zip | |
apm-emulation: use wait_event_freezable() instead of freezer_[do_not_]count()
vfork is moving away from freezer_[do_not_]count() one way or the
other leaving apm_ioctl() as the only user. apm_ioctl() just wants to
wait for suspend/resume cycle to complete without hindering the
freezer. Use wait_event_freezable() instead.
The only annoyance is that wait_event_freezable() wakes up with
-ERESTART if there are pending signals while apm_ioctl() wants to
ignore all signals until suspend is complete. We can play with
@current->[real_]blocked but this is hardly a performance or latency
critical path - simply chill a bit on each iteration until
SUSPEND_DONE for unlikely cases where there are pending signals.
Signed-off-by: Tejun Heo <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
Diffstat (limited to 'lib/dynamic_debug.c')
0 files changed, 0 insertions, 0 deletions