Date: Sat, 02 Nov 2013 12:18:24 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: Mark Johnston <markj@FreeBSD.org> Cc: dtrace@FreeBSD.org Subject: Re: "unstable" sdt probes Message-ID: <5274D170.6050505@FreeBSD.org> In-Reply-To: <20131102041240.GA23329@raichu> References: <5268F461.7080504@FreeBSD.org> <20131024161620.GA1710@charmander> <526A9CB5.2050207@FreeBSD.org> <20131026180643.GA98676@raichu> <527026B3.2070309@FreeBSD.org> <20131031035523.GD9355@raichu> <52720017.3060809@FreeBSD.org> <20131102041240.GA23329@raichu>
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on 02/11/2013 06:12 Mark Johnston said the following:
> Sure, there are multiple probe sites for the sdt:::arc-miss probe, for
> example. For the ip provider, there are multiple probe sites for
> ip:::receive: at least one for IPv4, and at least one for IPv6.
Okay, I think that the following lines in sdt_create_probe should handle this:
if (dtrace_probe_lookup(prov->id, mod, func, name) != DTRACE_IDNONE)
return;
It's, of course, a little bit wasteful to have a few duplicate sdt_probe and
sdt_argtype structs, but should not be too terrible.
I wonder if there is some low level trick to collapse this duplicates into a
single object during linking. Probably not...
--
Andriy Gapon
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