Implementing set_mempolicy support
dxu at dxuuu.xyz
Thu May 18 18:45:31 UTC 2017
Here is the followup PR: https://github.com/mozilla/rr/pull/2030 .
On Tue, Mar 21, 2017, at 12:17 AM, Robert O'Callahan wrote:
> On Tue, Mar 21, 2017 at 5:23 PM, Daniel Xu <dxu at dxuuu.xyz> wrote:
> > I'm interested in getting rr to support set_mempolicy(2). Before I begin
> > to hack the code base, I'd like to get a gauge on the difficulty of this
> > task. If there were any past attempts / failures I'd like to know that
> > as well.
> As far as I can tell from the man page, this system call has no
> user-visible effects other than its return value (and some performance
> side effects). Therefore it should be as simple as changing it from
> 'UnsupportedSyscall' to 'EmulatedSyscall' in syscalls.py, and writing
> a test. See cd502dbff705d928ed396baf94375b7885bdd18a for an example of
> how to write a test.
> AFAIK no-one has tried to do this before.
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