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| author | jkim <jkim@FreeBSD.org> | 2011-07-14 21:00:26 +0000 |
|---|---|---|
| committer | jkim <jkim@FreeBSD.org> | 2011-07-14 21:00:26 +0000 |
| commit | 96d6cc9832b1e44e9d22ebafdc953a241c07c9d9 (patch) | |
| tree | 9a2f51e9df71efecc4be43c619d3287cabc1edf5 /sys/x86 | |
| parent | aadbd5321a07ba56dde92245c908feb3e6e2cb94 (diff) | |
| download | FreeBSD-src-96d6cc9832b1e44e9d22ebafdc953a241c07c9d9.zip FreeBSD-src-96d6cc9832b1e44e9d22ebafdc953a241c07c9d9.tar.gz | |
If TSC stops ticking in C3, disable deep sleep when the user forcefully
select TSC as timecounter hardware.
Tested by: Fabian Keil (freebsd-listen at fabiankeil dot de)
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/x86/tsc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/x86/x86/tsc.c b/sys/x86/x86/tsc.c index 5f17f62..0b383bf 100644 --- a/sys/x86/x86/tsc.c +++ b/sys/x86/x86/tsc.c @@ -452,6 +452,7 @@ init_TSC_tc(void) if (cpu_can_deep_sleep && cpu_vendor_id == CPU_VENDOR_INTEL && (amd_pminfo & AMDPM_TSC_INVARIANT) == 0) { tsc_timecounter.tc_quality = -1000; + tsc_timecounter.tc_flags |= TC_FLAGS_C3STOP; if (bootverbose) printf("TSC timecounter disabled: C3 enabled.\n"); goto init; |
