Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1f503e7743df91eb6f63af27c310c557edfc3307
Commit: 1f503e7743df91eb6f63af27c310c557edfc3307
Parent: 66d16ed45d19600abd72dbd55bd2018437b24b73
Author: Akinobu Mita <[EMAIL PROTECTED]>
AuthorDate: Fri Oct 19 20:35:03 2007 +0200
Committer: Thomas Gleixner <[EMAIL PROTECTED]>
CommitDate: Fri Oct 19 20:35:03 2007 +0200
i386: do cpuid_device_create() in CPU_UP_PREPARE instead of CPU_ONLINE.
Do cpuid_device_create() in CPU_UP_PREPARE instead of CPU_ONLINE.
[ tglx: arch/x86 adaptation ]
Cc: "H. Peter Anvin" <[EMAIL PROTECTED]>
Signed-off-by: Akinobu Mita <[EMAIL PROTECTED]>
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
Cc: Gautham R Shenoy <[EMAIL PROTECTED]>
Cc: Oleg Nesterov <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/kernel/cpuid.c | 32 +++++++++++++++++++-------------
1 files changed, 19 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 70dcf91..2086c72 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -134,15 +134,18 @@ static const struct file_operations cpuid_fops = {
.open = cpuid_open,
};
-static int __cpuinit cpuid_device_create(int i)
+static __cpuinit int cpuid_device_create(int cpu)
{
- int err = 0;
struct device *dev;
- dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, i),
"cpu%d",i);
- if (IS_ERR(dev))
- err = PTR_ERR(dev);
- return err;
+ dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu),
+ "cpu%d", cpu);
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+static void cpuid_device_destroy(int cpu)
+{
+ device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
}
static int __cpuinit cpuid_class_cpu_callback(struct notifier_block *nfb,
@@ -150,18 +153,21 @@ static int __cpuinit cpuid_class_cpu_callback(struct
notifier_block *nfb,
void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
+ int err = 0;
switch (action) {
- case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
- cpuid_device_create(cpu);
+ case CPU_UP_PREPARE:
+ case CPU_UP_PREPARE_FROZEN:
+ err = cpuid_device_create(cpu);
break;
+ case CPU_UP_CANCELED:
+ case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
- device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+ cpuid_device_destroy(cpu);
break;
}
- return NOTIFY_OK;
+ return err ? NOTIFY_BAD : NOTIFY_OK;
}
static struct notifier_block __cpuinitdata cpuid_class_cpu_notifier =
@@ -198,7 +204,7 @@ static int __init cpuid_init(void)
out_class:
i = 0;
for_each_online_cpu(i) {
- device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, i));
+ cpuid_device_destroy(i);
}
class_destroy(cpuid_class);
out_chrdev:
@@ -212,7 +218,7 @@ static void __exit cpuid_exit(void)
int cpu = 0;
for_each_online_cpu(cpu)
- device_destroy(cpuid_class, MKDEV(CPUID_MAJOR, cpu));
+ cpuid_device_destroy(cpu);
class_destroy(cpuid_class);
unregister_chrdev(CPUID_MAJOR, "cpu/cpuid");
unregister_hotcpu_notifier(&cpuid_class_cpu_notifier);
-
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