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authorAkinobu Mita <akinobu.mita@gmail.com>2007-10-18 03:05:13 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:21 -0700
commitc7e38a9c27ced4020d64749400cece4fbad4679e (patch)
treec7ee053bdb4274b2045d174102472dec1d3038d8 /arch
parent9780e3e968537db0ac8d5b4857bb38bc40217c01 (diff)
downloadop-kernel-dev-c7e38a9c27ced4020d64749400cece4fbad4679e.zip
op-kernel-dev-c7e38a9c27ced4020d64749400cece4fbad4679e.tar.gz
cpu hotplug: thermal_throttle: fix cpu hotplug error handling
Do thermal_throttle_add_dev() in CPU_UP_PREPARE instead of CPU_ONLINE. Cc: Dmitriy Zavin <dmitriyz@google.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Andi Kleen <ak@suse.de> Cc: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/mcheck/therm_throt.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index 494d320..24885be 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -131,17 +131,19 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb,
{
unsigned int cpu = (unsigned long)hcpu;
struct sys_device *sys_dev;
- int err;
+ int err = 0;
sys_dev = get_cpu_sysdev(cpu);
switch (action) {
- case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
+ case CPU_UP_PREPARE:
+ case CPU_UP_PREPARE_FROZEN:
mutex_lock(&therm_cpu_lock);
err = thermal_throttle_add_dev(sys_dev);
mutex_unlock(&therm_cpu_lock);
WARN_ON(err);
break;
+ case CPU_UP_CANCELED:
+ case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
mutex_lock(&therm_cpu_lock);
@@ -149,7 +151,7 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb,
mutex_unlock(&therm_cpu_lock);
break;
}
- return NOTIFY_OK;
+ return err ? NOTIFY_BAD : NOTIFY_OK;
}
static struct notifier_block thermal_throttle_cpu_notifier __cpuinitdata =
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