Commit 699ff13f authored Mar 24, 2006 by Michael Ryan Committed by Linus Torvalds Mar 24, 2006

[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>

parent 4896cef8

arch/s390/kernel/smp.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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();

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