linux-kernel - [PATCH 23/27] cris, smpboot: Use generic SMP booting infrastructure

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Date:	Fri, 01 Jun 2012 14:45:40 +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,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Mike Frysinger <vapier@...too.org>, linux-cris-kernel@...s.com
Subject: [PATCH 23/27] cris, smpboot: Use generic SMP booting infrastructure

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

Cc: Mikael Starvik <starvik@...s.com>
Cc: Jesper Nilsson <jesper.nilsson@...s.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Eric Dumazet <eric.dumazet@...il.com>
Cc: Mike Frysinger <vapier@...too.org>
Cc: linux-cris-kernel@...s.com
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@...ux.vnet.ibm.com>
---

 arch/cris/arch-v32/kernel/smp.c |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index ebe2cb3..357114a 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -17,6 +17,7 @@
 #include <linux/cpumask.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/smpboot.h>
 
 #define IPI_SCHEDULE 1
 #define IPI_CALL 2
@@ -145,8 +146,11 @@ smp_boot_one_cpu(int cpuid, struct task_struct idle)
  * specific stuff such as the local timer and the MMU. */
 void __init smp_callin(void)
 {
-	extern void cpu_idle(void);
+	smpboot_start_secondary(NULL);
+}
 
+void __cpuinit __cpu_pre_starting(void *unused)
+{
 	int cpu = cpu_now_booting;
 	reg_intr_vect_rw_mask vect_mask = {0};
 
@@ -161,16 +165,10 @@ void __init smp_callin(void)
 	/* Setup local timer. */
 	cris_timer_init();
 
-	/* Enable IRQ and idle */
+	/* Enable IRQ */
 	REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask);
 	crisv32_unmask_irq(IPI_INTR_VECT);
 	crisv32_unmask_irq(TIMER0_INTR_VECT);
-	preempt_disable();
-	notify_cpu_starting(cpu);
-	local_irq_enable();
-
-	set_cpu_online(cpu, true);
-	cpu_idle();
 }
 
 /* Stop execution on this CPU.*/

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