linux-kernel - Re: [Next] CPU Hotplug test failures on powerpc

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Message-ID: <1260889402.4165.434.camel@twins>
Date:	Tue, 15 Dec 2009 16:03:22 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Sachin Sant <sachinp@...ibm.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linux/PPC Development <linuxppc-dev@...abs.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, linux-next@...r.kernel.org
Subject: Re: [Next] CPU Hotplug test failures on powerpc


Could you try the below?

---
 init/main.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/init/main.c b/init/main.c
index 4051d75..4be7de2 100644
--- a/init/main.c
+++ b/init/main.c
@@ -369,12 +369,6 @@ static void __init smp_init(void)
 {
 	unsigned int cpu;
 
-	/*
-	 * Set up the current CPU as possible to migrate to.
-	 * The other ones will be done by cpu_up/cpu_down()
-	 */
-	set_cpu_active(smp_processor_id(), true);
-
 	/* FIXME: This should be done in userspace --RR */
 	for_each_present_cpu(cpu) {
 		if (num_online_cpus() >= setup_max_cpus)
@@ -486,6 +480,7 @@ static void __init boot_cpu_init(void)
 	int cpu = smp_processor_id();
 	/* Mark the boot cpu "present", "online" etc for SMP and UP case */
 	set_cpu_online(cpu, true);
+	set_cpu_active(cpu, true);
 	set_cpu_present(cpu, true);
 	set_cpu_possible(cpu, true);
 }

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