diff options
| author | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
| commit | 6e2d6b2728fcb408eabd7991804f8cb33ff59f20 (patch) | |
| tree | 18dc3fc5bd55fa9ff92430e4ab8353de6c5c0e55 /include/linux/cpu.h | |
| parent | 6f0a256253f48095ba2e5bcdfbed41f21643c105 (diff) | |
| parent | 5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff) | |
Merge tag 'v4.19-rc1' into asoc-4.19
Linux 4.19-rc1
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index a97a63eef59f..218df7f4d3e1 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -30,7 +30,7 @@ struct cpu { }; extern void boot_cpu_init(void); -extern void boot_cpu_state_init(void); +extern void boot_cpu_hotplug_init(void); extern void cpu_init(void); extern void trap_init(void); @@ -55,6 +55,8 @@ extern ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, char *buf); extern ssize_t cpu_show_spec_store_bypass(struct device *dev, struct device_attribute *attr, char *buf); +extern ssize_t cpu_show_l1tf(struct device *dev, + struct device_attribute *attr, char *buf); extern __printf(4, 5) struct device *cpu_device_create(struct device *parent, void *drvdata, @@ -103,6 +105,7 @@ extern void cpus_write_lock(void); extern void cpus_write_unlock(void); extern void cpus_read_lock(void); extern void cpus_read_unlock(void); +extern int cpus_read_trylock(void); extern void lockdep_assert_cpus_held(void); extern void cpu_hotplug_disable(void); extern void cpu_hotplug_enable(void); @@ -115,6 +118,7 @@ static inline void cpus_write_lock(void) { } static inline void cpus_write_unlock(void) { } static inline void cpus_read_lock(void) { } static inline void cpus_read_unlock(void) { } +static inline int cpus_read_trylock(void) { return true; } static inline void lockdep_assert_cpus_held(void) { } static inline void cpu_hotplug_disable(void) { } static inline void cpu_hotplug_enable(void) { } @@ -166,4 +170,23 @@ void cpuhp_report_idle_dead(void); static inline void cpuhp_report_idle_dead(void) { } #endif /* #ifdef CONFIG_HOTPLUG_CPU */ +enum cpuhp_smt_control { + CPU_SMT_ENABLED, + CPU_SMT_DISABLED, + CPU_SMT_FORCE_DISABLED, + CPU_SMT_NOT_SUPPORTED, +}; + +#if defined(CONFIG_SMP) && defined(CONFIG_HOTPLUG_SMT) +extern enum cpuhp_smt_control cpu_smt_control; +extern void cpu_smt_disable(bool force); +extern void cpu_smt_check_topology_early(void); +extern void cpu_smt_check_topology(void); +#else +# define cpu_smt_control (CPU_SMT_ENABLED) +static inline void cpu_smt_disable(bool force) { } +static inline void cpu_smt_check_topology_early(void) { } +static inline void cpu_smt_check_topology(void) { } +#endif + #endif /* _LINUX_CPU_H_ */ |