On Sat, 6 Mar 2010, Alexander Leidinger wrote:
Take a look at the DTrace configuration information here:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/dtrace.html
I've just reread it (despite the fact that I already used it). Some
comments:
Last time I tried, I didn't see any problems by adding
makeoptions WITH_CTF=yes
to the kernel config instead of doing
make WITH_CTF=1 kernel
Did I miss something, and if not, shouldn't we tell about the
makeoptions part instead (a kernel rebuild later will not cause
trouble when someone forgets to do the WITH_CTF part as it is already
in the kernel makefile)?
I'll leave John to answer this one, CC line broadended.
What is DDB_CTF doing? Some additional dtrace access in ddb? I didn't had it
before but the dtrace probes I had in KLDs worked without problems when
running dtrace probes from userland.
This is a poorly named kernel option, and should probably be changed. This
has to do with the kernel loading CTF information for kernel modules. My
recollection is hazy, but it may well be required in order for fbt to be used
with modules.
Robert N M Watson
Computer Laboratory
University of Cambridge
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