This is the generic (non-x86) changes for zero-based per cpu variables.
This patchset provides the following:
* Init: Move setup of nr_cpu_ids to as early as possible for usage
by early boot functions.
* Generic: Percpu infrastructure to rebase the per cpu area to zero
This provides for the capability of accessing the percpu variables
using a local register instead of having to go through a table
on node 0 to find this cpu specific offsets. It also would allow
atomic operations on percpu variables to reduce required locking.
* Introduces a new DEFINE_PER_CPU_FIRST to locate a percpu variable
(cpu_pda in this case) at the beginning of the percpu .data section.
Based on git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
Signed-off-by: Mike Travis <[EMAIL PROTECTED]>
---
v3: * split generic/x86-specific into two patches
v2: * rebased and retested using linux-2.6.git
* fixed errors reported by checkpatch.pl
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