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[PATCH] s390: cpu up retries

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Retry starting of new cpu if sigp restart returns condition code 2 (busy).

Signed-off-by: Michael Ryan <ryan@funsoft.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Michael Ryan 2006-03-24 03:15:17 -08:00 committed by Linus Torvalds
parent 4896cef8e3
commit 699ff13f10
1 changed files with 3 additions and 1 deletions
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arch/s390/kernel/smp.c
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@ -665,7 +665,9 @@ __cpu_up(unsigned int cpu)
cpu_lowcore->current_task = (unsigned long) idle;
cpu_lowcore->cpu_data.cpu_nr = cpu;
eieio();
signal_processor(cpu,sigp_restart);
while (signal_processor(cpu,sigp_restart) == sigp_busy)
udelay(10);
while (!cpu_online(cpu))
cpu_relax();