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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2019-09-16 18:22:56 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-09-24 13:37:28 +0200 |
| commit | e1572f1d08be57a5412a464cff0712a23cd0b73e (patch) | |
| tree | d1ee6d7671cd371c765778c9a73777a823dfe848 /include/linux/cpu.h | |
| parent | a073d7e3ad687a7ef32b65affe80faa7ce89bf92 (diff) | |
| download | linux-e1572f1d08be57a5412a464cff0712a23cd0b73e.tar.gz linux-e1572f1d08be57a5412a464cff0712a23cd0b73e.tar.bz2 linux-e1572f1d08be57a5412a464cff0712a23cd0b73e.zip | |
cpu/SMT: create and export cpu_smt_possible()
KVM needs to know if SMT is theoretically possible, this means it is
supported and not forcefully disabled ('nosmt=force'). Create and
export cpu_smt_possible() answering this question.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 88dc0c653925..d0633ebdaa9c 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -201,12 +201,14 @@ enum cpuhp_smt_control { extern enum cpuhp_smt_control cpu_smt_control; extern void cpu_smt_disable(bool force); extern void cpu_smt_check_topology(void); +extern bool cpu_smt_possible(void); extern int cpuhp_smt_enable(void); extern int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval); #else # define cpu_smt_control (CPU_SMT_NOT_IMPLEMENTED) static inline void cpu_smt_disable(bool force) { } static inline void cpu_smt_check_topology(void) { } +static inline bool cpu_smt_possible(void) { return false; } static inline int cpuhp_smt_enable(void) { return 0; } static inline int cpuhp_smt_disable(enum cpuhp_smt_control ctrlval) { return 0; } #endif |