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[PATCH] s390: cpu up retries
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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1 changed files with 3 additions and 1 deletions
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@ -665,7 +665,9 @@ __cpu_up(unsigned int cpu)
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cpu_lowcore->current_task = (unsigned long) idle;
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cpu_lowcore->current_task = (unsigned long) idle;
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cpu_lowcore->cpu_data.cpu_nr = cpu;
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cpu_lowcore->cpu_data.cpu_nr = cpu;
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eieio();
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eieio();
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signal_processor(cpu,sigp_restart);
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while (signal_processor(cpu,sigp_restart) == sigp_busy)
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udelay(10);
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while (!cpu_online(cpu))
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while (!cpu_online(cpu))
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cpu_relax();
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cpu_relax();
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