From ca1e631c3acf80bc5f5934ce9054a9b4880c96e1 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Thu, 16 Jan 2014 13:00:21 -0800 Subject: [PATCH] x86, tsc, apic: Unbreak static (MSR) calibration when CONFIG_X86_LOCAL_APIC=n If we aren't going to use the local APIC anyway, we obviously don't care about its timer frequency. Link: http://lkml.kernel.org/r/tip-rgm7xmg7k6qnjlw3ynkcjsmh@git.kernel.org Reported-by: Fengguang Wu Cc: Bin Gao Signed-off-by: H. Peter Anvin --- arch/x86/kernel/tsc_msr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c index c502772..8b5434f 100644 --- a/arch/x86/kernel/tsc_msr.c +++ b/arch/x86/kernel/tsc_msr.c @@ -118,8 +118,10 @@ int try_msr_calibrate_tsc(unsigned long *fast_calibrate) *fast_calibrate = freq * ratio; pr_info("TSC runs at %lu KHz\n", *fast_calibrate); +#ifdef CONFIG_X86_LOCAL_APIC lapic_timer_frequency = (freq * 1000) / HZ; pr_info("lapic_timer_frequency = %d\n", lapic_timer_frequency); +#endif return 1; } -- 2.7.4