Use MFENCE to sync RDTSC on non-Intel CPUs.
ClosedPublic
Actions

Authored by kib on Jul 25 2017, 10:54 AM.

Tags

None

Referenced Files

	Unknown Object (File)
	Tue, Apr 28, 4:47 PM

	Unknown Object (File)
	Apr 26 2026, 5:22 AM

	Unknown Object (File)
	Apr 21 2026, 11:19 AM

	Unknown Object (File)
	Apr 21 2026, 1:59 AM

	Unknown Object (File)
	Apr 20 2026, 9:48 PM

	Unknown Object (File)
	Apr 19 2026, 8:03 PM

	Unknown Object (File)
	Apr 18 2026, 9:42 PM

	Unknown Object (File)
	Apr 11 2026, 4:59 PM

Subscribers

Details

Reviewers: None
Commits: rS321608: Use MFENCE to serialize RDTSC on non-Intel CPUs.

Diff Detail

Lint

Lint Skipped

Unit

Tests Skipped

Event Timeline

kib created this revision.Jul 25 2017, 10:54 AM

Herald added a subscriber: imp. · View Herald TranscriptJul 25 2017, 10:54 AM

emaste added a subscriber: emaste.Jul 25 2017, 2:24 PM

Microoptimize, make the lfence (intel) case fastest.

Closed by commit rS321608: Use MFENCE to serialize RDTSC on non-Intel CPUs. (authored by kib). · Explain WhyJul 27 2017, 8:37 AM

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Path

Size

lib/

libc/

x86/

sys/

__vdso_gettc.c

127 lines

Diff 31189

View Options

lib/libc/x86/sys/__vdso_gettc.c

Use MFENCE to sync RDTSC on non-Intel CPUs.ClosedPublicActions