On Fri, Dec 3, 2010 at 1:54 PM, Jung-uk Kim <j...@freebsd.org> wrote: > Author: jkim > Date: Fri Dec 3 21:54:10 2010 > New Revision: 216161 > URL: http://svn.freebsd.org/changeset/base/216161 > > Log: > Explicitly initialize TSC frequency. To calibrate TSC frequency, we use > DELAY(9) and it may use TSC in turn if TSC frequency is non-zero.
Doesn't ELF guarantee that the static data is already 0? On AIX the kernel had to explicitly zero the non-initialized data area, but AIX uses the a.out format. I thought FreeBSD/ELF meant that global variables without initializers were 0 by the time the OS started running. Thanks, matthew > > MFC after: 3 days > > Modified: > head/sys/amd64/amd64/tsc.c > head/sys/i386/i386/tsc.c > > Modified: head/sys/amd64/amd64/tsc.c > ============================================================================== > --- head/sys/amd64/amd64/tsc.c Fri Dec 3 21:52:01 2010 (r216160) > +++ head/sys/amd64/amd64/tsc.c Fri Dec 3 21:54:10 2010 (r216161) > @@ -46,7 +46,7 @@ __FBSDID("$FreeBSD$"); > > #include "cpufreq_if.h" > > -uint64_t tsc_freq; > +uint64_t tsc_freq = 0; > int tsc_is_broken; > int tsc_is_invariant; > static eventhandler_tag tsc_levels_tag, tsc_pre_tag, tsc_post_tag; > > Modified: head/sys/i386/i386/tsc.c > ============================================================================== > --- head/sys/i386/i386/tsc.c Fri Dec 3 21:52:01 2010 (r216160) > +++ head/sys/i386/i386/tsc.c Fri Dec 3 21:54:10 2010 (r216161) > @@ -46,7 +46,7 @@ __FBSDID("$FreeBSD$"); > > #include "cpufreq_if.h" > > -uint64_t tsc_freq; > +uint64_t tsc_freq = 0; > int tsc_is_broken; > int tsc_is_invariant; > u_int tsc_present; > _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"