Date: Thu, 20 Aug 2009 17:13:07 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Alexander Leidinger <Alexander@leidinger.net> Cc: freebsd-hackers@freebsd.org Subject: Re: DTrace probes & klds Message-ID: <200908201713.08368.doconnor@gsoft.com.au> In-Reply-To: <20090820081740.436656fu6d4fxoso@webmail.leidinger.net> References: <200908192331.34507.doconnor@gsoft.com.au> <20090820081740.436656fu6d4fxoso@webmail.leidinger.net>
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On Thu, 20 Aug 2009, Alexander Leidinger wrote:
> Quoting Daniel O'Connor <doconnor@gsoft.com.au> (from Wed, 19 Aug
> 2009
>
> 23:31:33 +0930):
> > Content-Type: text/plain;
> > charset=3D"utf-8"
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> >
> > Is it possible? the handbook implies not and I can't get it to
> > work, but i could be doing it wrong..
> >
> > I get fbt traces listed for KLDs (I get new entries for each load
> > of the KLD which seems like a potential problem) but I can't
> > specify an SDT_PROBE and have it work.
>
> Can you show us some example code?
/* Recycle fbt as SDT_PROVIDER_DEFINE is said not to work */
SDT_PROBE_DEFINE(fbt, gsio, gsio_intr, test);
SDT_PROBE_ARGTYPE(fbt, gsio, gsio_intr, test, 0, "int");
SDT_PROBE_ARGTYPE(fbt, gsio, gsio_intr, test, 1, "int");
=2E..
static void
gsio_intr(void *varg) {
=2E..
istat =3D g_lcr_inl(sc, PLX_INTCSR);
=2E..
SDT_PROBE(fbt, gsio, gsio_intr, test, istat, 0, 0, 0, 0);
> In
> http://svn.freebsd.org/viewvc/base/user/netchild/linuxulator-dtrace/s
>rc/sys/compat/linux/linux_emul.c?revision=3D185383&view=3Dmarkup I have
> code which worked at least at some point in time when loaded as a
> KLD.
Hmm OK, this is on a 7.x system which doesn't have any SDT* stuff in the=20
linuxlator (except for FBT probes)
=2D-=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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