From: Tejun Heo <tj@kernel.org>
Date: Thu, 9 Sep 2010 16:00:15 +0000 (+0200)
Subject: percpu: fix build breakage on s390 and cleanup build configuration tests
X-Git-Tag: v2.6.37-rc1~163^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c9a024fde58b08745680863859d1483def64f74;p=pandora-kernel.git

percpu: fix build breakage on s390 and cleanup build configuration tests

Commit bbddff05 (percpu: use percpu allocator on UP too) incorrectly
excluded pcpu_build_alloc_info() on SMP configurations which use
generic setup_per_cpu_area() like s390.  The config ifdefs are
becoming confusing.  Fix and clean it up by,

* Move pcpu_build_alloc_info() right on top of its two users -
  pcpu_{embed|page}_first_chunk() which are already in CONFIG_SMP
  block.

* Define BUILD_{EMBED|PAGE}_FIRST_CHUNK which indicate whether each
  first chunk function needs to be included and use them to control
  inclusion of the three functions to reduce confusion.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Sachin Sant <sachinp@in.ibm.com>
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