On Tuesday 20 July 2010 04:33:01 Doug Barton wrote: > On Mon, 19 Jul 2010, Chris Ruiz wrote: > > On Mon, Jul 19, 2010 at 8:03 PM, Doug Barton <dougb_at_freebsd.org> wrote: > >> I added options KDTRACE_HOOKS to my kernel config, built a new kernel, > >> and rebooted. I decided to try your script before things went sideways > >> so I'd have an idea of what to expect, and it didn't work: > >> > >> dtrace: failed to initialize dtrace: DTrace device not available on > >> system > >> > >> Is there something else I need to do to enable it? > > > > You need to build the kernel with CTF. Try adding "makeoptions > > WITH_CTF=yes" to your config and rebuilding your kernel. There's a > > blurb in src/UPDATING about other ways to accomplish the same thing. > > Thanks for the suggestion, but no improvement. Doing: > strings /boot/kernel/kernel | grep -i dtrace > > Shows lots of dtrace-related entries, unlike previous kernels built > without the KDTRACE_HOOKS option, but same error with Dan's script. Just a stab in the dark, did you "kldload dtraceall"? KDTRACE_HOOKS just adds the needed linkage for the dtrace modules to work. MaxReceived on Tue Jul 20 2010 - 00:50:15 UTC
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