tree b77393f9265cb395528be56c879ff1733bd79252
parent 6886c1b815b81817d00c8d8af0a12cfa2b700e13
author Thomas Gleixner <tglx@linutronix.de> 1528239237 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1534347446 +0200

x86/cpu/common: Provide detect_ht_early()

commit 545401f4448a807b963ff17b575e0a393e68b523 upstream.

To support force disabling of SMT it's required to know the number of
thread siblings early. detect_ht() cannot be called before the APIC driver
is selected, so split out the part which initializes smp_num_siblings.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>