Re: [Uclinux-dist-devel] [RFC PATCH] percpu: always align percpuoutput section to PAGE_SIZE

[Mike Frysinger]

On Tue, Oct 26, 2010 at 10:06, Tejun Heo wrote:
> The linker script macros PERCPU_VADDR() and PERCPU() are used to
> define this output section and the latter takes @align parameter.
> Several architectures are using @align smaller than PAGE_SIZE breaking
> percpu memory alignment.

hmm, i just pushed through a fix in the Blackfin tree as we hit a boot
failure otherwise:
-   PERCPU(4)
+   PERCPU(PAGE_SIZE)

> This patch removes @align parameter from PERCPU(), renames it to
> PERCPU_SECTION and makes it always align to PAGE_SIZE. ÂWhile at it,
> add PCPU_SETUP_BUG_ON() checks such that alignment problems are
> reliably detected and remove percpu alignment comment recently added
> in workqueue.c as the condition would trigger BUG way before reaching
> there.

seems this still hasnt made it to mainline.  has it stalled or
something ?  feel free for the Blackfin bits:
Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
-mike
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