tree 4a8e261d16739624bb91ed9f56062ec5f7401227
parent 3a95e8eb34f595a0144adb6e5513d456319bd8a5
author Heiko Carstens <heiko.carstens@de.ibm.com> 1217601551 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1217601570 +0200

[S390] nohz/sclp: disable timer on synchronous waits.

sclp_sync_wait wait synchronously for an sclp interrupt and disables
timer interrupts. However on the irq enter paths there is an extra
check if a timer interrupt would be due and calls the timer callback.
This would schedule softirqs in the wrong context.
So introduce local_tick_enable/disable which prevents this.

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