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[PATCH] cpu hotplug: revert init patch submitted for 2.6.17

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In 2.6.17, there was a problem with cpu_notifiers and XFS.  I provided a
band-aid solution to solve that problem.  In the process, i undid all the
changes you both were making to ensure that these notifiers were available
only at init time (unless CONFIG_HOTPLUG_CPU is defined).

We deferred the real fix to 2.6.18.  Here is a set of patches that fixes the
XFS problem cleanly and makes the cpu notifiers available only at init time
(unless CONFIG_HOTPLUG_CPU is defined).

If CONFIG_HOTPLUG_CPU is defined then cpu notifiers are available at run
time.

This patch reverts the notifier_call changes made in 2.6.17

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chandra Seetharaman
2006-06-27 02:54:07 -07:00
committed by Linus Torvalds
parent 6ac12dfe9c
commit 9c7b216d23
18 changed files with 18 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/hrtimer.c
View File

@@ -833,7 +833,7 @@ static void migrate_hrtimers(int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int hrtimer_cpu_notify(struct notifier_block *self,
static int __devinit hrtimer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;

2
kernel/profile.c
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@@ -299,7 +299,7 @@ out:
}
#ifdef CONFIG_HOTPLUG_CPU
static int profile_cpu_callback(struct notifier_block *info,
static int __devinit profile_cpu_callback(struct notifier_block *info,
unsigned long action, void *__cpu)
{
int node, cpu = (unsigned long)__cpu;

2
kernel/rcupdate.c
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@@ -548,7 +548,7 @@ static void __devinit rcu_online_cpu(int cpu)
tasklet_init(&per_cpu(rcu_tasklet, cpu), rcu_process_callbacks, 0UL);
}
static int rcu_cpu_notify(struct notifier_block *self,
static int __devinit rcu_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;

2
kernel/softirq.c
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@@ -446,7 +446,7 @@ static void takeover_tasklets(unsigned int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int cpu_callback(struct notifier_block *nfb,
static int __devinit cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{

2
kernel/softlockup.c
View File

@@ -104,7 +104,7 @@ static int watchdog(void * __bind_cpu)
/*
* Create/destroy watchdog threads as CPUs come and go:
*/
static int
static int __devinit
cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
int hotcpu = (unsigned long)hcpu;

2
kernel/timer.c
View File

@@ -1652,7 +1652,7 @@ static void __devinit migrate_timers(int cpu)
}
#endif /* CONFIG_HOTPLUG_CPU */
static int timer_cpu_notify(struct notifier_block *self,
static int __devinit timer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;

2
kernel/workqueue.c
View File

@@ -559,7 +559,7 @@ static void take_over_work(struct workqueue_struct *wq, unsigned int cpu)
}
/* We're holding the cpucontrol mutex here */
static int workqueue_cpu_callback(struct notifier_block *nfb,
static int __devinit workqueue_cpu_callback(struct notifier_block *nfb,
unsigned long action,
void *hcpu)
{