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. Bug: 29359497 Change-Id: I0395c86e01cd49c348fda8f93087d26f88557c91 Signed-off-by: Thierry Strudel <tstrudel@google.com> Git-commit: fda281a64c7da7b5c634703d22a240a79c337992 Git-repo: https://android.googlesource.com/kernel/common.git Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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@ -547,6 +547,7 @@ void __weak arch_enable_nonboot_cpus_end(void)
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void __ref enable_nonboot_cpus(void)
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void __ref enable_nonboot_cpus(void)
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{
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{
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int cpu, error;
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int cpu, error;
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struct device *cpu_device;
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/* Allow everyone to use the CPU hotplug again */
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/* Allow everyone to use the CPU hotplug again */
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cpu_maps_update_begin();
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cpu_maps_update_begin();
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@ -562,6 +563,12 @@ void __ref enable_nonboot_cpus(void)
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error = _cpu_up(cpu, 1);
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error = _cpu_up(cpu, 1);
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if (!error) {
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if (!error) {
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printk(KERN_INFO "CPU%d is up\n", cpu);
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printk(KERN_INFO "CPU%d is up\n", cpu);
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cpu_device = get_cpu_device(cpu);
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if (!cpu_device)
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pr_err("%s: failed to get cpu%d device\n",
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__func__, cpu);
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else
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kobject_uevent(&cpu_device->kobj, KOBJ_ONLINE);
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continue;
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continue;
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}
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}
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printk(KERN_WARNING "Error taking CPU%d up: %d\n", cpu, error);
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printk(KERN_WARNING "Error taking CPU%d up: %d\n", cpu, error);
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