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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH 04/18] powerpc/smp: Remove unused generic_cpu_enable()
Date: Tue,  8 Mar 2011 17:37:16 +1100	[thread overview]
Message-ID: <1299566250-10516-5-git-send-email-benh@kernel.crashing.org> (raw)
In-Reply-To: <1299566250-10516-1-git-send-email-benh@kernel.crashing.org>

Nobody uses it, besides we should always use the normal __cpu_up
path anyways

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 arch/powerpc/include/asm/smp.h |    1 -
 arch/powerpc/kernel/smp.c      |   22 ----------------------
 2 files changed, 0 insertions(+), 23 deletions(-)

diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index 1de0e97..a629b6f 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h
@@ -43,7 +43,6 @@ DECLARE_PER_CPU(unsigned int, cpu_pvr);
 #ifdef CONFIG_HOTPLUG_CPU
 extern void fixup_irqs(const struct cpumask *map);
 int generic_cpu_disable(void);
-int generic_cpu_enable(unsigned int cpu);
 void generic_cpu_die(unsigned int cpu);
 void generic_mach_cpu_die(void);
 #endif
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 3c0fab5..19d0c25 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -322,28 +322,6 @@ int generic_cpu_disable(void)
 	return 0;
 }
 
-int generic_cpu_enable(unsigned int cpu)
-{
-	/* Do the normal bootup if we haven't
-	 * already bootstrapped. */
-	if (system_state != SYSTEM_RUNNING)
-		return -ENOSYS;
-
-	/* get the target out of it's holding state */
-	per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
-	smp_wmb();
-
-	while (!cpu_online(cpu))
-		cpu_relax();
-
-#ifdef CONFIG_PPC64
-	fixup_irqs(cpu_online_mask);
-	/* counter the irq disable in fixup_irqs */
-	local_irq_enable();
-#endif
-	return 0;
-}
-
 void generic_cpu_die(unsigned int cpu)
 {
 	int i;
-- 
1.7.1

  parent reply	other threads:[~2011-03-08  6:37 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-08  6:37 [PATCHES] powerpc: Cleanup and fix CPU hotplug Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 01/18] powerpc: Make decrementer interrupt robust against offlined CPUs Benjamin Herrenschmidt
2011-03-10  8:01   ` Michael Ellerman
2011-03-08  6:37 ` [PATCH 02/18] powerpc/smp: soft-replugged CPUs must go back to start_secondary Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 03/18] powerpc/smp: Fix generic_mach_cpu_die() Benjamin Herrenschmidt
2011-03-08  6:37 ` Benjamin Herrenschmidt [this message]
2011-03-08  6:37 ` [PATCH 05/18] powerpc/smp: Remove unused smp_ops->cpu_enable() Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 06/18] powerpc/pmac/smp: Fix 32-bit PowerMac cpu_die Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 07/18] powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32 Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 08/18] powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bit Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 09/18] powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 10/18] powerpc/pmac/smp: Remove HMT changes for PowerMac offline code Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 11/18] powerpc/pmac/smp: Properly NAP offlined CPU on G5 Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 12/18] powerpc/pmac: Rename cpu_state in therm_pm72 to avoid collision Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 13/18] powerpc/smp: Add a smp_ops->bringup_up() done callback Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 14/18] powerpc/pmac/smp: Fix CPU hotplug crashes on some machines Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 15/18] powerpc/smp: Don't expose per-cpu "cpu_state" array Benjamin Herrenschmidt
2011-03-29  5:37   ` Michael Ellerman
2011-03-29  8:13     ` Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 16/18] powerpc/smp: Create idle threads on demand and properly reset them Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 17/18] powerpc/smp: Increase vdso_data->processorCount, not just decrease it Benjamin Herrenschmidt
2011-03-10  3:41   ` Michael Ellerman
2011-03-10  3:46     ` Benjamin Herrenschmidt
2011-03-08  6:37 ` [PATCH 18/18] powerpc/pmac/smp: Remove no-longer needed preempt workaround Benjamin Herrenschmidt

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