diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2018-06-21 10:37:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-15 18:14:45 +0200 |
| commit | 16fd33cd353be2cb71f2431788e5b2ae02891a77 (patch) | |
| tree | 012923e5ddfb1330902f973b38d6a6c55aabaab9 /arch/x86/kernel/smpboot.c | |
| parent | 7b69a96e5a328f17fe33f3826d7e8349ab59015d (diff) | |
x86/topology: Provide topology_smt_supported()
commit f048c399e0f7490ab7296bc2c255d37eb14a9675 upstream
Provide information whether SMT is supoorted by the CPUs. Preparatory patch
for SMT control mechanism.
Suggested-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index e230c47c88e3..168cc3baadf6 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -305,6 +305,14 @@ bool topology_is_primary_thread(unsigned int cpu) } /** + * topology_smt_supported - Check whether SMT is supported by the CPUs + */ +bool topology_smt_supported(void) +{ + return smp_num_siblings > 1; +} + +/** * topology_phys_to_logical_pkg - Map a physical package id to a logical * * Returns logical package id or -1 if not found |