tree b8f4c37049a357ba16fd94360ae3d4c2c8661810
parent f9a2f797fcde5a4aa818bd3ca8584fd1197e9c15
author Heiko Carstens <heiko.carstens@de.ibm.com> 1232725226 +0100
committer Heiko Carstens <heiko.carstens@de.ibm.com> 1232725229 +0100

[S390] etr/stp: fix possible deadlock

Precreate stop_machine threads in case the machine supports ETR/STP.
Otherwise we might deadlock if a time sync operation gets scheduled
and the creation of stop_machine threads would cause disk I/O.
This is just the minimal fix.
The real fix would be to only precreate stop_machine threads if
ETR/STP is actually used. But that would be a rather large and
complicated patch.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>