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From: Glauber Costa <gcosta@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, glommer@gmail.com, mingo@elte.hu,
	tglx@linutronix.de, Glauber Costa <gcosta@redhat.com>
Subject: [PATCH 39/52] merge __cpu_disable and cpu_die
Date: Mon,  3 Mar 2008 14:13:07 -0300	[thread overview]
Message-ID: <1204564400-17636-40-git-send-email-gcosta@redhat.com> (raw)
In-Reply-To: <1204564400-17636-39-git-send-email-gcosta@redhat.com>

They are now equal, and are moved to a common file

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/smpboot.c    |   85 ++++++++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/smpboot_32.c |   67 ---------------------------------
 arch/x86/kernel/smpboot_64.c |   79 ---------------------------------------
 include/asm-x86/smp.h        |    3 +
 include/asm-x86/smp_32.h     |    3 -
 include/asm-x86/smp_64.h     |    3 -
 6 files changed, 88 insertions(+), 152 deletions(-)

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 644e609..c35cd31 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -2,6 +2,13 @@
 #include <linux/smp.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/percpu.h>
+
+#include <asm/nmi.h>
+#include <asm/irq.h>
+#include <asm/smp.h>
+#include <asm/cpu.h>
+#include <asm/numa.h>
 
 /* Number of siblings per CPU package */
 int smp_num_siblings = 1;
@@ -181,5 +188,83 @@ __init void prefill_possible_map(void)
 	for (i = 0; i < possible; i++)
 		cpu_set(i, cpu_possible_map);
 }
+
+static void __ref remove_cpu_from_maps(int cpu)
+{
+	cpu_clear(cpu, cpu_online_map);
+#ifdef CONFIG_X86_64
+	cpu_clear(cpu, cpu_callout_map);
+	cpu_clear(cpu, cpu_callin_map);
+	/* was set by cpu_init() */
+	clear_bit(cpu, (unsigned long *)&cpu_initialized);
+	clear_node_cpumask(cpu);
+#endif
+}
+
+int __cpu_disable(void)
+{
+	int cpu = smp_processor_id();
+
+	/*
+	 * Perhaps use cpufreq to drop frequency, but that could go
+	 * into generic code.
+	 *
+	 * We won't take down the boot processor on i386 due to some
+	 * interrupts only being able to be serviced by the BSP.
+	 * Especially so if we're not using an IOAPIC	-zwane
+	 */
+	if (cpu == 0)
+		return -EBUSY;
+
+	if (nmi_watchdog == NMI_LOCAL_APIC)
+		stop_apic_nmi_watchdog(NULL);
+	clear_local_APIC();
+
+	/*
+	 * HACK:
+	 * Allow any queued timer interrupts to get serviced
+	 * This is only a temporary solution until we cleanup
+	 * fixup_irqs as we do for IA64.
+	 */
+	local_irq_enable();
+	mdelay(1);
+
+	local_irq_disable();
+	remove_siblinginfo(cpu);
+
+	/* It's now safe to remove this processor from the online map */
+	remove_cpu_from_maps(cpu);
+	fixup_irqs(cpu_online_map);
+	return 0;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+	/* We don't do anything here: idle task is faking death itself. */
+	unsigned int i;
+
+	for (i = 0; i < 10; i++) {
+		/* They ack this in play_dead by setting CPU_DEAD */
+		if (per_cpu(cpu_state, cpu) == CPU_DEAD) {
+			printk(KERN_INFO "CPU %d is now offline\n", cpu);
+			if (1 == num_online_cpus())
+				alternatives_smp_switch(0);
+			return;
+		}
+		msleep(100);
+	}
+	printk(KERN_ERR "CPU %u didn't die...\n", cpu);
+}
+#else /* ... !CONFIG_HOTPLUG_CPU */
+int __cpu_disable(void)
+{
+	return -ENOSYS;
+}
+
+void __cpu_die(unsigned int cpu)
+{
+	/* We said "no" in __cpu_disable */
+	BUG();
+}
 #endif
 
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 3d21c66..00b1b59 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -1040,73 +1040,6 @@ void __init native_smp_prepare_boot_cpu(void)
 	__get_cpu_var(cpu_state) = CPU_ONLINE;
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
-static void __ref remove_cpu_from_maps(int cpu)
-{
-	cpu_clear(cpu, cpu_online_map);
-}
-
-int __cpu_disable(void)
-{
-	cpumask_t map = cpu_online_map;
-	int cpu = smp_processor_id();
-
-	/*
-	 * Perhaps use cpufreq to drop frequency, but that could go
-	 * into generic code.
- 	 *
-	 * We won't take down the boot processor on i386 due to some
-	 * interrupts only being able to be serviced by the BSP.
-	 * Especially so if we're not using an IOAPIC	-zwane
-	 */
-	if (cpu == 0)
-		return -EBUSY;
-	if (nmi_watchdog == NMI_LOCAL_APIC)
-		stop_apic_nmi_watchdog(NULL);
-	clear_local_APIC();
-	/* Allow any queued timer interrupts to get serviced */
-	local_irq_enable();
-	mdelay(1);
-	local_irq_disable();
-
-	remove_siblinginfo(cpu);
-
-	remove_cpu_from_maps(cpu);
-	fixup_irqs(map);
-
-	return 0;
-}
-
-void __cpu_die(unsigned int cpu)
-{
-	/* We don't do anything here: idle task is faking death itself. */
-	unsigned int i;
-
-	for (i = 0; i < 10; i++) {
-		/* They ack this in play_dead by setting CPU_DEAD */
-		if (per_cpu(cpu_state, cpu) == CPU_DEAD) {
-			printk ("CPU %d is now offline\n", cpu);
-			if (1 == num_online_cpus())
-				alternatives_smp_switch(0);
-			return;
-		}
-		msleep(100);
-	}
- 	printk(KERN_ERR "CPU %u didn't die...\n", cpu);
-}
-#else /* ... !CONFIG_HOTPLUG_CPU */
-int __cpu_disable(void)
-{
-	return -ENOSYS;
-}
-
-void __cpu_die(unsigned int cpu)
-{
-	/* We said "no" in __cpu_disable */
-	BUG();
-}
-#endif /* CONFIG_HOTPLUG_CPU */
-
 int __cpuinit native_cpu_up(unsigned int cpu)
 {
 	unsigned long flags;
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 6509d3c..0c67e5a 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -836,82 +836,3 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
 	setup_ioapic_dest();
 	check_nmi_watchdog();
 }
-
-#ifdef CONFIG_HOTPLUG_CPU
-static void __ref remove_cpu_from_maps(int cpu)
-{
-	cpu_clear(cpu, cpu_online_map);
-	cpu_clear(cpu, cpu_callout_map);
-	cpu_clear(cpu, cpu_callin_map);
-	clear_bit(cpu, (unsigned long *)&cpu_initialized); /* was set by cpu_init() */
-	clear_node_cpumask(cpu);
-}
-
-int __cpu_disable(void)
-{
-	int cpu = smp_processor_id();
-
-	/*
-	 * Perhaps use cpufreq to drop frequency, but that could go
-	 * into generic code.
- 	 *
-	 * We won't take down the boot processor on i386 due to some
-	 * interrupts only being able to be serviced by the BSP.
-	 * Especially so if we're not using an IOAPIC	-zwane
-	 */
-	if (cpu == 0)
-		return -EBUSY;
-
-	if (nmi_watchdog == NMI_LOCAL_APIC)
-		stop_apic_nmi_watchdog(NULL);
-	clear_local_APIC();
-
-	/*
-	 * HACK:
-	 * Allow any queued timer interrupts to get serviced
-	 * This is only a temporary solution until we cleanup
-	 * fixup_irqs as we do for IA64.
-	 */
-	local_irq_enable();
-	mdelay(1);
-
-	local_irq_disable();
-	remove_siblinginfo(cpu);
-
-	/* It's now safe to remove this processor from the online map */
-	remove_cpu_from_maps(cpu);
-	fixup_irqs(cpu_online_map);
-	return 0;
-}
-
-void __cpu_die(unsigned int cpu)
-{
-	/* We don't do anything here: idle task is faking death itself. */
-	unsigned int i;
-
-	for (i = 0; i < 10; i++) {
-		/* They ack this in play_dead by setting CPU_DEAD */
-		if (per_cpu(cpu_state, cpu) == CPU_DEAD) {
-			printk ("CPU %d is now offline\n", cpu);
-			if (1 == num_online_cpus())
-				alternatives_smp_switch(0);
-			return;
-		}
-		msleep(100);
-	}
- 	printk(KERN_ERR "CPU %u didn't die...\n", cpu);
-}
-
-#else /* ... !CONFIG_HOTPLUG_CPU */
-
-int __cpu_disable(void)
-{
-	return -ENOSYS;
-}
-
-void __cpu_die(unsigned int cpu)
-{
-	/* We said "no" in __cpu_disable */
-	BUG();
-}
-#endif /* CONFIG_HOTPLUG_CPU */
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index c800b81..27d9f65 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -70,6 +70,9 @@ void native_smp_prepare_cpus(unsigned int max_cpus);
 void native_smp_cpus_done(unsigned int max_cpus);
 int native_cpu_up(unsigned int cpunum);
 
+extern int __cpu_disable(void);
+extern void __cpu_die(unsigned int cpu);
+
 extern unsigned disabled_cpus;
 extern void prefill_possible_map(void);
 #endif
diff --git a/include/asm-x86/smp_32.h b/include/asm-x86/smp_32.h
index 0b25134..4fec2fe 100644
--- a/include/asm-x86/smp_32.h
+++ b/include/asm-x86/smp_32.h
@@ -34,9 +34,6 @@ DECLARE_PER_CPU(u16, x86_cpu_to_apicid);
 #define startup_ipi_hook(phys_apicid, start_eip, start_esp) do { } while (0)
 #endif
 
-extern int __cpu_disable(void);
-extern void __cpu_die(unsigned int cpu);
-
 /*
  * This function is needed by all SMP systems. It must _always_ be valid
  * from the initial startup. We map APIC_BASE very early in page_setup(),
diff --git a/include/asm-x86/smp_64.h b/include/asm-x86/smp_64.h
index 1ecf813..d554d7d 100644
--- a/include/asm-x86/smp_64.h
+++ b/include/asm-x86/smp_64.h
@@ -42,9 +42,6 @@ static inline int cpu_present_to_apicid(int mps_cpu)
 
 #define SMP_TRAMPOLINE_BASE 0x6000
 
-extern int __cpu_disable(void);
-extern void __cpu_die(unsigned int cpu);
-
 #define raw_smp_processor_id()	read_pda(cpunumber)
 #define cpu_physical_id(cpu)	per_cpu(x86_cpu_to_apicid, cpu)
 
-- 
1.5.0.6


  reply	other threads:[~2008-03-03 17:26 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-03 17:12 [PATCH 0/52] First attempt at smp integration Glauber Costa
2008-03-03 17:12 ` [PATCH 01/52] commonize smp.h Glauber Costa
2008-03-03 17:12   ` [PATCH 02/52] merge extern function definitions Glauber Costa
2008-03-03 17:12     ` [PATCH 03/52] merge extern variables definitions Glauber Costa
2008-03-03 17:12       ` [PATCH 04/52] define smp_ops in common header Glauber Costa
2008-03-03 17:12         ` [PATCH 05/52] move smp_ops extern declaration to " Glauber Costa
2008-03-03 17:12           ` [PATCH 06/52] merge smp_send_reschedule Glauber Costa
2008-03-03 17:12             ` [PATCH 07/52] unify smp_call_function_mask Glauber Costa
2008-03-03 17:12               ` [PATCH 08/52] unify __cpu_up Glauber Costa
2008-03-03 17:12                 ` [PATCH 09/52] unify prepare_boot_cpu Glauber Costa
2008-03-03 17:12                   ` [PATCH 10/52] unify smp_prepare_cpus Glauber Costa
2008-03-03 17:12                     ` [PATCH 11/52] unify smp_cpus_done Glauber Costa
2008-03-03 17:12                       ` [PATCH 12/52] move disabled_cpus to common header Glauber Costa
2008-03-03 17:12                         ` [PATCH 13/52] use disabled_cpus in i386 Glauber Costa
2008-03-03 17:12                           ` [PATCH 14/52] move prefill_possible_map to common file Glauber Costa
2008-03-03 17:12                             ` [PATCH 15/52] remove export for smp_call_function_mask Glauber Costa
2008-03-03 17:12                               ` [PATCH 16/52] remove irqs disabled warning Glauber Costa
2008-03-03 17:12                                 ` [PATCH 17/52] create smpcommon.c Glauber Costa
2008-03-03 17:12                                   ` [PATCH 18/52] provide __smp_call_function Glauber Costa
2008-03-03 17:12                                     ` [PATCH 19/52] change x86_64 smp_call_function_mask to look alike i386 Glauber Costa
2008-03-03 17:12                                       ` [PATCH 20/52] provide hlt_works function Glauber Costa
2008-03-03 17:12                                         ` [PATCH 21/52] make stop_this_cpu looks exactly equal in both arches Glauber Costa
2008-03-03 17:12                                           ` [PATCH 22/52] add reboot_force test to native_smp_send_stop Glauber Costa
2008-03-03 17:12                                             ` [PATCH 23/52] unify smp_send_stop Glauber Costa
2008-03-03 17:12                                               ` [PATCH 24/52] create smp.c Glauber Costa
2008-03-03 17:12                                                 ` [PATCH 25/52] create ipi.c Glauber Costa
2008-03-03 17:12                                                   ` [PATCH 26/52] create tlb files Glauber Costa
2008-03-03 17:12                                                     ` [PATCH 27/52] get rid of smp_32.c and smp_64.c Glauber Costa
2008-03-03 17:12                                                       ` [PATCH 28/52] remove cpu_llc_id from processor.h Glauber Costa
2008-03-03 17:12                                                         ` [PATCH 29/52] adjust types in smpcommon_32.c Glauber Costa
2008-03-03 17:12                                                           ` [PATCH 30/52] move equal types to common file Glauber Costa
2008-03-03 17:12                                                             ` [PATCH 31/52] make set_cpu_sibling_map nonstatic Glauber Costa
2008-03-03 17:13                                                               ` [PATCH 32/52] make remove_siblinginfo non-static Glauber Costa
2008-03-03 17:13                                                                 ` [PATCH 33/52] move hotplug related extern definitions to smp.h Glauber Costa
2008-03-03 17:13                                                                   ` [PATCH 34/52] move sibling functions to common file Glauber Costa
2008-03-03 17:13                                                                     ` [PATCH 35/52] move cpu_coregroup_map " Glauber Costa
2008-03-03 17:13                                                                       ` [PATCH 36/52] remove vector_lock around cpu_online_map Glauber Costa
2008-03-03 17:13                                                                         ` [PATCH 37/52] use remove_from_maps in cpu_disable Glauber Costa
2008-03-03 17:13                                                                           ` [PATCH 38/52] do not clear cpu_online_map Glauber Costa
2008-03-03 17:13                                                                             ` Glauber Costa [this message]
2008-03-03 17:13                                                                               ` [PATCH 40/52] make x86_64 accept the max_cpus parameter Glauber Costa
2008-03-03 17:13                                                                                 ` [PATCH 41/52] move trampoline arrays extern definition to smp.h Glauber Costa
2008-03-03 17:13                                                                                   ` [PATCH 42/52] adapt voyager's trampoline_base Glauber Costa
2008-03-03 17:13                                                                                     ` [PATCH 43/52] adapt voyager's setup_trampoline Glauber Costa
2008-03-03 17:13                                                                                       ` [PATCH 44/52] unify setup_trampoline Glauber Costa
2008-03-03 17:13                                                                                         ` [PATCH 45/52] use wait_for_init_deassert in x86_64 Glauber Costa
2008-03-03 17:13                                                                                           ` [PATCH 46/52] use cpu_relax instead of rep_nop Glauber Costa
2008-03-03 17:13                                                                                             ` [PATCH 47/52] leave irqs enabled while calibrating delay Glauber Costa
2008-03-03 17:13                                                                                               ` [PATCH 48/52] modify x86_64 smp_callin so it looks like i386 Glauber Costa
2008-03-03 17:13                                                                                                 ` [PATCH 49/52] wrap esr setting up in i386 in lapic_setup_esr Glauber Costa
2008-03-03 17:13                                                                                                   ` [PATCH 50/52] provide an end_local_APIC_setup function Glauber Costa
2008-03-03 17:13                                                                                                     ` [PATCH 51/52] make map_cpu_to_logical_apicid nonstatic Glauber Costa
2008-03-03 17:13                                                                                                       ` [PATCH 52/52] merge smp_callin Glauber Costa
2008-03-03 17:22 ` [PATCH 0/52] First attempt at smp integration Ingo Molnar
2008-03-03 17:35   ` Glauber Costa
2008-03-03 17:23 ` Andi Kleen
2008-03-03 17:38   ` Glauber Costa

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