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authorRafael J. Wysocki <rjw@sisk.pl>2007-05-09 02:35:11 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:56 -0700
commit455c017ae3934797653549704c286e7bcc3a9397 (patch)
tree7b5b67916b064e3ce7868082e0915f37b437aeb8 /kernel/cpu.c
parent8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d (diff)
microcode: use suspend-related CPU hotplug notifications
Make the microcode driver use the suspend-related CPU hotplug notifications to handle the CPU hotplug events occuring during system-wide suspend and resume transitions. Remove the global variable suspend_cpu_hotplug previously used for this purpose. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cpu.c')
-rw-r--r--kernel/cpu.c10
1 files changed, 0 insertions, 10 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 369d2892687d..208cf3497c10 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -262,12 +262,6 @@ int __cpuinit cpu_up(unsigned int cpu)
}
#ifdef CONFIG_SUSPEND_SMP
-/* Needed to prevent the microcode driver from requesting firmware in its CPU
- * hotplug notifier during the suspend/resume.
- */
-int suspend_cpu_hotplug;
-EXPORT_SYMBOL(suspend_cpu_hotplug);
-
static cpumask_t frozen_cpus;
int disable_nonboot_cpus(void)
@@ -275,7 +269,6 @@ int disable_nonboot_cpus(void)
int cpu, first_cpu, error = 0;
mutex_lock(&cpu_add_remove_lock);
- suspend_cpu_hotplug = 1;
first_cpu = first_cpu(cpu_online_map);
/* We take down all of the non-boot CPUs in one shot to avoid races
* with the userspace trying to use the CPU hotplug at the same time
@@ -302,7 +295,6 @@ int disable_nonboot_cpus(void)
} else {
printk(KERN_ERR "Non-boot CPUs are not disabled\n");
}
- suspend_cpu_hotplug = 0;
mutex_unlock(&cpu_add_remove_lock);
return error;
}
@@ -317,7 +309,6 @@ void enable_nonboot_cpus(void)
if (cpus_empty(frozen_cpus))
goto out;
- suspend_cpu_hotplug = 1;
printk("Enabling non-boot CPUs ...\n");
for_each_cpu_mask(cpu, frozen_cpus) {
error = _cpu_up(cpu, 1);
@@ -328,7 +319,6 @@ void enable_nonboot_cpus(void)
printk(KERN_WARNING "Error taking CPU%d up: %d\n", cpu, error);
}
cpus_clear(frozen_cpus);
- suspend_cpu_hotplug = 0;
out:
mutex_unlock(&cpu_add_remove_lock);
}