Date: Mon, 29 Feb 2016 13:49:10 -0800 From: Mark Johnston <markj@FreeBSD.org> To: hiren panchasara <hiren@strugglingcoder.info> Cc: freebsd-dtrace@freebsd.org, sbruno@FreeBSD.org Subject: Re: Functions not getting picked up by dtrace Message-ID: <20160229214910.GA67805@wkstn-mjohnston.west.isilon.com> In-Reply-To: <20160229213933.GE82027@strugglingcoder.info> References: <20160229213933.GE82027@strugglingcoder.info>
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On Mon, Feb 29, 2016 at 01:39:33PM -0800, hiren panchasara wrote: > I've seen this earlier with others too but this one is the latest > confusing me: em_xmit() in $src/dev/e1000/if_em.c > > Other functions with similar signature are listed in 'dtrace -l'. em_xmit() is a static function with a single call site, so it's getting inlined into its caller. DTrace FBT can't instrument inlined functions. > > Is is because of some optimization? How do I undo it for testing > purposes? There's a __noinline attribute that you can use for this.
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