Date: Tue, 7 Dec 2010 18:14:38 +0000 (UTC) From: Jung-uk Kim <jkim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r216261 - in stable/8/sys: amd64/amd64 i386/i386 Message-ID: <201012071814.oB7IEc0S076058@svn.freebsd.org>
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Author: jkim Date: Tue Dec 7 18:14:38 2010 New Revision: 216261 URL: http://svn.freebsd.org/changeset/base/216261 Log: MFC: r216159 Do not change CPU ticker frequency if TSC is P-state invariant. Approved by: re (kib) Modified: stable/8/sys/amd64/amd64/tsc.c stable/8/sys/i386/i386/tsc.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) Modified: stable/8/sys/amd64/amd64/tsc.c ============================================================================== --- stable/8/sys/amd64/amd64/tsc.c Tue Dec 7 17:54:04 2010 (r216260) +++ stable/8/sys/amd64/amd64/tsc.c Tue Dec 7 18:14:38 2010 (r216261) @@ -146,6 +146,9 @@ tsc_levels_changed(void *arg, int unit) int count, error; uint64_t max_freq; + if (tsc_is_invariant) + return; + /* Only use values from the first CPU, assuming all are equal. */ if (unit != 0) return; Modified: stable/8/sys/i386/i386/tsc.c ============================================================================== --- stable/8/sys/i386/i386/tsc.c Tue Dec 7 17:54:04 2010 (r216260) +++ stable/8/sys/i386/i386/tsc.c Tue Dec 7 18:14:38 2010 (r216261) @@ -170,6 +170,9 @@ tsc_levels_changed(void *arg, int unit) int count, error; uint64_t max_freq; + if (tsc_is_invariant) + return; + /* Only use values from the first CPU, assuming all are equal. */ if (unit != 0) return;
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