Message ID | 20230629143149.79073-3-ldufour@linux.ibm.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show
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Series |
Introduce SMT level and add PowerPC support
|
expand
|
diff --git a/kernel/cpu.c b/kernel/cpu.c index 237394e0574a..c67049bb3fc8 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -2482,6 +2482,12 @@ __store_smt_control(struct device *dev, struct device_attribute *attr, { int ctrlval, ret; + if (cpu_smt_control == CPU_SMT_FORCE_DISABLED) + return -EPERM; + + if (cpu_smt_control == CPU_SMT_NOT_SUPPORTED) + return -ENODEV; + if (sysfs_streq(buf, "on")) ctrlval = CPU_SMT_ENABLED; else if (sysfs_streq(buf, "off")) @@ -2491,12 +2497,6 @@ __store_smt_control(struct device *dev, struct device_attribute *attr, else return -EINVAL; - if (cpu_smt_control == CPU_SMT_FORCE_DISABLED) - return -EPERM; - - if (cpu_smt_control == CPU_SMT_NOT_SUPPORTED) - return -ENODEV; - ret = lock_device_hotplug_sysfs(); if (ret) return ret;