linux-kernel - [PATCH] arch: powerpc: kernel: smp.c: Remove unused function

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Date:	Sun,  7 Dec 2014 23:11:59 +0100
From:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>
Cc:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	Michael Ellerman <mpe@...erman.id.au>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...nel.org>,
	Anton Blanchard <anton@...ba.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH] arch: powerpc: kernel: smp.c:  Remove unused function

Remove the function generic_mach_cpu_die() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
---
 arch/powerpc/include/asm/smp.h |    1 -
 arch/powerpc/kernel/smp.c      |   14 --------------
 2 files changed, 15 deletions(-)

diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index 5a6614a..d607df5 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h
@@ -64,7 +64,6 @@ DECLARE_PER_CPU(unsigned int, cpu_pvr);
 extern void migrate_irqs(void);
 int generic_cpu_disable(void);
 void generic_cpu_die(unsigned int cpu);
-void generic_mach_cpu_die(void);
 void generic_set_cpu_dead(unsigned int cpu);
 void generic_set_cpu_up(unsigned int cpu);
 int generic_check_cpu_restart(unsigned int cpu);
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 71e186d..83d4f3f 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -434,20 +434,6 @@ void generic_cpu_die(unsigned int cpu)
 	printk(KERN_ERR "CPU%d didn't die...\n", cpu);
 }
 
-void generic_mach_cpu_die(void)
-{
-	unsigned int cpu;
-
-	local_irq_disable();
-	idle_task_exit();
-	cpu = smp_processor_id();
-	printk(KERN_DEBUG "CPU%d offline\n", cpu);
-	__get_cpu_var(cpu_state) = CPU_DEAD;
-	smp_wmb();
-	while (__get_cpu_var(cpu_state) != CPU_UP_PREPARE)
-		cpu_relax();
-}
-
 void generic_set_cpu_dead(unsigned int cpu)
 {
 	per_cpu(cpu_state, cpu) = CPU_DEAD;
-- 
1.7.10.4

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