ANDROID: cpu: send KOBJ_ONLINE event when enabling cpus
In case some sysfs nodes needs to be labeled with a different label than
sysfs then user needs to be notified when a core is brought back online.
Signed-off-by: Thierry Strudel <tstrudel@google.com>
Bug: 29359497
Patchset: cpu-online-event
Signed-off-by: Mattias Nissler <mnissler@google.com>
Change-Id: If8ac6286947f6e359bc190caf14eda80c9d61b87
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 3773129..9ced7c7 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -627,6 +627,7 @@
void enable_nonboot_cpus(void)
{
int cpu, error;
+ struct device *cpu_device;
/* Allow everyone to use the CPU hotplug again */
cpu_maps_update_begin();
@@ -644,6 +645,12 @@
trace_suspend_resume(TPS("CPU_ON"), cpu, false);
if (!error) {
pr_info("CPU%d is up\n", cpu);
+ cpu_device = get_cpu_device(cpu);
+ if (!cpu_device)
+ pr_err("%s: failed to get cpu%d device\n",
+ __func__, cpu);
+ else
+ kobject_uevent(&cpu_device->kobj, KOBJ_ONLINE);
continue;
}
pr_warn("Error taking CPU%d up: %d\n", cpu, error);
