Re: Patch 1/6 introduce sysctl

[Arjan van de Ven]

On Thu, 2005-01-27 at 11:36 +0100, Andi Kleen wrote:
> Arjan van de Ven <arjan@xxxxxxxxxxxxx> writes:
> 
> > This first patch of the series introduces a sysctl (default off) that
> > enables/disables the randomisation feature globally. Since randomisation may
> > make it harder to debug really tricky situations (reproducability goes
> > down), the sysadmin needs a way to disable it globally.
> 
> A global sysctl doesn't make much sense to me for this. If you
> want to get some program running you don't want to impact your
> system daemons. And a non root user couldn't enable it anyways,
> which can be annoying if it is needed to get some binary working.
> 
> If anything I would make it a personality flag so that it can
> be set per process.

I actually wanted both; eg a global "whack it off" and a per process
flag for all the reasons you state. 
I have no objection to remove the global "whack it off" flag, however,
for testing this stuff in -mm it might be useful to have a simple "turn
it off" option.


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