From: Zhenzhong Duan Date: Wed, 21 Jun 2017 08:23:37 +0000 (-0700) Subject: x86/tsc: Call check_system_tsc_reliable() before unsynchronized_tsc() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a1272dd5531b259bf7313ac7597a67362698038c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git x86/tsc: Call check_system_tsc_reliable() before unsynchronized_tsc() 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 Signed-off-by: Thomas Gleixner Link: http://lkml.kernel.org/r/b1532ef7-cd9f-45f7-9f49-48dd2a5c2495@default --- diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 714dfba6a1e7..a316bdd42a37 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1412,11 +1412,11 @@ void __init tsc_init(void) use_tsc_delay(); + check_system_tsc_reliable(); + if (unsynchronized_tsc()) mark_tsc_unstable("TSCs unsynchronized"); - check_system_tsc_reliable(); - detect_art(); }