Re: [PATCH] powerpc: stop_this_cpu: remove the cpu from the online map.
From: Valentine <hidden>
Date: 2009-12-07 21:57:43
Ben, is this OK? Other architectures do the same thing. Thanks, Val. Valentine Barshak wrote:
quoted hunk ↗ jump to hunk
Remove the CPU from the online map to prevent smp_call_function from sending messages to a stopped CPU. Signed-off-by: Valentine Barshak <redacted> --- arch/powerpc/kernel/smp.c | 3 +++ 1 file changed, 3 insertions(+) diff -pruN linux-2.6.orig/arch/powerpc/kernel/smp.c linux-2.6/arch/powerpc/kernel/smp.c--- linux-2.6.orig/arch/powerpc/kernel/smp.c 2009-11-26 00:22:15.000000000 +0300 +++ linux-2.6/arch/powerpc/kernel/smp.c 2009-11-26 00:26:48.000000000 +0300@@ -218,6 +218,9 @@ void crash_send_ipi(void (*crash_ipi_cal static void stop_this_cpu(void *dummy) { + /* Remove this CPU */ + set_cpu_online(smp_processor_id(), false); + local_irq_disable(); while (1) ;_______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev