[S390] Make sure enabled wait psw is loaded in default_idle.

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If both NO_IDLE_HZ and VIRT_TIMER are disabled default_idle won't load
an enabled wait psw and busy loop instead. This is because the
idle_chain is empty and the return value of atomic_notifier_call_chain
will be NOTIFY_DONE, which causes default_idle to return instead of
loading an enabled wait psw.
Fix this by calling __atomic_notifier_call_chain instead and add proper
return value handling.

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

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Heiko Carstens 2008-02-19 15:29:26 +01:00 • committed by Martin Schwidefsky

parent 057c5cb35e

commit 11ab244c9f

1 changed files with 9 additions and 6 deletions

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arch/s390/kernel/process.c

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