Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 82f9c080 authored by Feng Tang's avatar Feng Tang Committed by John Stultz
Browse files

x86: tsc: Add support for new S3_NONSTOP feature 



Add support for new S3_NONSTOP feature

Signed-off-by: default avatarFeng Tang <feng.tang@intel.com>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 5caf4636

arch/x86/kernel/tsc.c

+5 −1
Original line number Diff line number Diff line
@@ -768,6 +768,7 @@ static cycle_t read_tsc(struct clocksource *cs) 


static void resume_tsc(struct clocksource *cs)

{

	if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC_S3))

		clocksource_tsc.cycle_last = 0;

}
@@ -939,6 +940,9 @@ static int __init init_tsc_clocksource(void) 
		clocksource_tsc.flags &= ~CLOCK_SOURCE_IS_CONTINUOUS;

	}



	if (boot_cpu_has(X86_FEATURE_NONSTOP_TSC_S3))

		clocksource_tsc.flags |= CLOCK_SOURCE_SUSPEND_NONSTOP;



	/*

	 * Trust the results of the earlier calibration on systems

	 * exporting a reliable TSC.