linux-kernel - Re: [PATCH] Add nid sanity on alloc_pages

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Message-Id: <1184330904.6059.223.camel@localhost.localdomain>
Date:	Fri, 13 Jul 2007 22:48:24 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Paul Jackson <pj@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, joe.jin@...cle.com,
	bill.irwin@...cle.com, linux-kernel@...r.kernel.org,
	gurudas.pai@...cle.com, zwane@....linux.org.uk
Subject: Re: [PATCH] Add nid sanity on alloc_pages_node

On Fri, 2007-07-13 at 01:54 -0700, Paul Jackson wrote:
> > Something for the young ...
> 
> ... ancient self smiles with relief, glad that Andrew is not looking
> this way ;).
> 
> > We could do this: add a little bitops torture-test and run that
> > unconditionally, nice and early.
> 
> Good idea.  That would allow for wide spread coverage across all arch's
> that they obeyed the rules for the tighter API - find_first_bit returning
> exactly N on finding no bits set, before we took the risk of actually
> relying on the changed API, by removing those min_t() guards.

That, the lockdep tests, the RCU tests...

Looks like the kernel is building up it's own test suite :-) That's a
-good- thing, maybe we should formalize it a bit (separate the "test
suite" config options) ?

Ben.


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