diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index e1967e9eddc2..fc28e17940e0 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -392,8 +392,7 @@ enum cpuhp_smt_control cpu_smt_control __read_mostly = CPU_SMT_ENABLED; void __init cpu_smt_disable(bool force) { - if (cpu_smt_control == CPU_SMT_FORCE_DISABLED || - cpu_smt_control == CPU_SMT_NOT_SUPPORTED) + if (!cpu_smt_possible()) return; if (force) { @@ -438,6 +437,14 @@ static inline bool cpu_smt_allowed(unsigned int cpu) */ return !cpumask_test_cpu(cpu, &cpus_booted_once_mask); } + +/* Returns true if SMT is not supported of forcefully (irreversibly) disabled */ +bool cpu_smt_possible(void) +{ + return cpu_smt_control != CPU_SMT_FORCE_DISABLED && + cpu_smt_control != CPU_SMT_NOT_SUPPORTED; +} +EXPORT_SYMBOL_GPL(cpu_smt_possible); #else static inline bool cpu_smt_allowed(unsigned int cpu) { return true; } #endif |