move the turbo_disabled before intel_set_max_freq_ratio, when turbo is disabled, the max frequency ratio is a const value, it is unnecessary to read MSR_TURBO_RATIO* msr to compute
Signed-off-by: Li RongQing <lirongq...@baidu.com> --- arch/x86/kernel/smpboot.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index fe3ab9632f3b..8979c459df2f 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1987,7 +1987,7 @@ static bool intel_set_max_freq_ratio(void) out: arch_turbo_freq_ratio = div_u64(turbo_freq * SCHED_CAPACITY_SCALE, base_freq); - arch_set_max_freq_ratio(turbo_disabled()); + arch_set_max_freq_ratio(false); return true; } @@ -2009,6 +2009,9 @@ static void init_freq_invariance(void) if (smp_processor_id() != 0 || !boot_cpu_has(X86_FEATURE_APERFMPERF)) return; + if (turbo_disabled()) + return; + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) ret = intel_set_max_freq_ratio(); -- 2.16.2