linux-kernel - [PATCH 11/27] sh, smpboot: Use generic SMP booting infrastructure

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Message-ID: <20120601091238.31979.80347.stgit@srivatsabhat.in.ibm.com>
Date:	Fri, 01 Jun 2012 14:42:43 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	tglx@...utronix.de, peterz@...radead.org,
	paulmck@...ux.vnet.ibm.com
Cc:	rusty@...tcorp.com.au, mingo@...nel.org, yong.zhang0@...il.com,
	akpm@...ux-foundation.org, vatsa@...ux.vnet.ibm.com, rjw@...k.pl,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	srivatsa.bhat@...ux.vnet.ibm.com, nikunj@...ux.vnet.ibm.com,
	Paul Mundt <lethal@...ux-sh.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Mike Frysinger <vapier@...too.org>, linux-sh@...r.kernel.org
Subject: [PATCH 11/27] sh, smpboot: Use generic SMP booting infrastructure

Convert sh to use the generic framework to boot secondary CPUs.

Notes:
Postpone enabling local interrupts to after completing bringup of
secondary CPU.

Cc: Paul Mundt <lethal@...ux-sh.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Rusty Russell <rusty@...tcorp.com.au>
Cc: Mike Frysinger <vapier@...too.org>
Cc: linux-sh@...r.kernel.org
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com>
---

 arch/sh/kernel/smp.c |   19 +++++++++----------
 1 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c
index 8e0fde0..d7f7faf 100644
--- a/arch/sh/kernel/smp.c
+++ b/arch/sh/kernel/smp.c
@@ -179,6 +179,11 @@ void native_play_dead(void)
 
 asmlinkage void __cpuinit start_secondary(void)
 {
+	smpboot_start_secondary(NULL);
+}
+
+void __cpuinit __cpu_pre_starting(void *unused)
+{
 	unsigned int cpu = smp_processor_id();
 	struct mm_struct *mm = &init_mm;
 
@@ -190,23 +195,17 @@ asmlinkage void __cpuinit start_secondary(void)
 	local_flush_tlb_all();
 
 	per_cpu_trap_init();
+}
 
-	preempt_disable();
-
-	notify_cpu_starting(cpu);
-
-	local_irq_enable();
+void __cpuinit __cpu_pre_online(void *unused)
+{
+	unsigned int cpu = smp_processor_id();
 
 	/* Enable local timers */
 	local_timer_setup(cpu);
 	calibrate_delay();
 
 	smp_store_cpu_info(cpu);
-
-	set_cpu_online(cpu, true);
-	per_cpu(cpu_state, cpu) = CPU_ONLINE;
-
-	cpu_idle();
 }
 
 extern struct {

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