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From: "Luck, Tony" <tony.luck@intel.com>
To: Dave Jones <davej@redhat.com>, Mark Brown <broonie@kernel.org>
Date: Fri, 2 May 2014 21:21:07 +0000
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Cc: Sarah Sharp <sarah@minilop.net>,
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Subject: Re: [Ksummit-discuss] [CORE TOPIC] Kernel tinification: shrinking
 the kernel and avoiding size regressions
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> Sounds like something you could use tracepoints for maybe ?
> Failing that, kprobes ?
>
> I'm pretty sure I've seen systemtap examples of this very thing years
> ago, but who knows if they even work any more.

If we do head to a world where systems are configured with
a subset of system calls - it would be useful for application
packages to come with a list of syscall dependencies. So you
could avoid much sadness from installing a package that won't
actually work.

But to get this right you'd need to do more than just strace/
kprobe/systemtap scan to see what they *typically* do. The
system calls used will depend on the arguments given and the
input data.  E.g. a trivial test might conclude that bash(1) doesn't
use the pipe(2) system call ... which it doesn't until some user
types:
  $ dmesg | grep ixgbe

-Tony