x86/tsc: Call check_system_tsc_reliable() before unsynchronized_tsc()

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tsc_clocksource_reliable is initialized in check_system_tsc_reliable(), but
it is checked in unsynchronized_tsc() which is called before the
initialization.

In practice that's not an issue because systems which mark the TSC
reliable have X86_FEATURE_CONSTANT_TSC set as well, which is evaluated
in unsynchronized_tsc() before tsc_clocksource_reliable.

Reorder the calls so initialization happens before usage.

[ tglx: Massaged changelog ]

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/b1532ef7-cd9f-45f7-9f49-48dd2a5c2495@default

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Zhenzhong Duan 2017-06-21 01:23:37 -07:00 • committed by Thomas Gleixner

parent 803ff8a7a6

commit a1272dd553

1 changed files with 2 additions and 2 deletions

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arch/x86/kernel/tsc.c

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