From 984fecebda3b9c8e3d75f8492593da71c58972b3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 18 Nov 2016 10:38:09 +0100 Subject: [PATCH] x86/tsc: Finalize the split of the TSC_RELIABLE flag All places which used the TSC_RELIABLE to skip the delayed calibration have been converted to use the TSC_KNOWN_FREQ flag. Make the immeditate clocksource registration, which skips the long term calibration, solely depend on TSC_KNOWN_FREQ. The TSC_RELIABLE now merily removes the requirement for a watchdog clocksource. Signed-off-by: Thomas Gleixner Cc: Bin Gao Cc: Peter Zijlstra --- arch/x86/kernel/tsc.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index f4dfdaa6633c..0ff1ec61d1e4 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1299,13 +1299,8 @@ static int __init init_tsc_clocksource(void) /* * When TSC frequency is known (retrieved via MSR or CPUID), we skip * the refined calibration and directly register it as a clocksource. - * - * We still keep the TSC_RELIABLE flag here to avoid regressions - - * it will be removed after all the conversion for other code paths - * connected to this flag is done. */ - if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE) || - boot_cpu_has(X86_FEATURE_TSC_KNOWN_FREQ)) { + if (boot_cpu_has(X86_FEATURE_TSC_KNOWN_FREQ)) { clocksource_register_khz(&clocksource_tsc, tsc_khz); return 0; } -- 2.20.1