projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3f916919 ME |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_CPU_SMT_H_ | |
| 3 | #define _LINUX_CPU_SMT_H_ | |
| 4 | ||
| 5 | enum cpuhp_smt_control { | |
| 6 | CPU_SMT_ENABLED, | |
| 7 | CPU_SMT_DISABLED, | |
| 8 | CPU_SMT_FORCE_DISABLED, | |
| 9 | CPU_SMT_NOT_SUPPORTED, | |
| 10 | CPU_SMT_NOT_IMPLEMENTED, | |
| 11 | }; | |
| 12 | ||
| 13 | #if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT) | |
| 14 | extern enum cpuhp_smt_control cpu_smt_control; | |
| 447ae4ac | 15 | extern unsigned int cpu_smt_num_threads; |
| 3f916919 | 16 | extern void cpu_smt_disable(bool force); |
| 447ae4ac ME |
17 | extern void cpu_smt_set_num_threads(unsigned int num_threads, |
| 18 | unsigned int max_threads); | |
| 3f916919 ME |
19 | extern bool cpu_smt_possible(void); |
| 20 | extern int cpuhp_smt_enable(void); | |
| 21 | extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval); | |
| 22 | #else | |
| 23 | # define cpu_smt_control (CPU_SMT_NOT_IMPLEMENTED) | |
| 447ae4ac | 24 | # define cpu_smt_num_threads 1 |
| 3f916919 | 25 | static inline void cpu_smt_disable(bool force) { } |
| 447ae4ac ME |
26 | static inline void cpu_smt_set_num_threads(unsigned int num_threads, |
| 27 | unsigned int max_threads) { } | |
| 3f916919 ME |
28 | static inline bool cpu_smt_possible(void) { return false; } |
| 29 | static inline int cpuhp_smt_enable(void) { return 0; } | |
| 30 | static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; } | |
| 31 | #endif | |
| 32 | ||
| 33 | #endif /* _LINUX_CPU_SMT_H_ */ |