linux-kernel - Commit 34d76c41 causes linker errors on ia64 with NR

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Date:	Sun, 18 Oct 2009 18:28:10 -0400
From:	Jeff Mahoney <jeffm@...e.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Commit 34d76c41 causes linker errors on ia64 with NR_CPUS=4096

Hi Peter -

Commit 34d76c41 introduced the update_shares_data percpu, but it ends up
causing problems on large ia64 machines. Specifically, ia64 is limited
to 64k in percpu vars and with NR_CPUS=4096, that ends up being 32k by
itself. It ends up causing link errors since that is how ia64 enforces
the 64k limit.

I can take a deeper look at finding a workable solution but thought I'd
mention it in case you had ideas already.

-Jeff

-- 
Jeff Mahoney
SuSE Labs
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