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authorTejun Heo <tj@kernel.org>2010-09-03 20:22:47 +0400
committerTejun Heo <tj@kernel.org>2010-09-08 13:11:12 +0400
commit6abad5acac09921f4944af77d3860f82d49f528d (patch)
treea4c83ef8f2cbb3b345282305a9ba82f06706ec04 /include/linux/percpu.h
parent4f8b02b4e5c6896e073bed736136d420bd44b627 (diff)
downloadlinux-6abad5acac09921f4944af77d3860f82d49f528d.tar.xz
percpu: reduce PCPU_MIN_UNIT_SIZE to 32k
In preparation of enabling percpu allocator for UP, reduce PCPU_MIN_UNIT_SIZE to 32k. On UP, the first chunk doesn't have to include static percpu variables and chunk size can be smaller which is important as UP percpu allocator will use contiguous kernel memory to populate chunks. PCPU_MIN_UNIT_SIZE also determines the maximum supported allocation size but 32k should still be enough. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux.com>
Diffstat (limited to 'include/linux/percpu.h')
-rw-r--r--include/linux/percpu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 49466b13c5c6..fc8130a7cac0 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -42,7 +42,7 @@
#ifdef CONFIG_SMP
/* minimum unit size, also is the maximum supported allocation size */
-#define PCPU_MIN_UNIT_SIZE PFN_ALIGN(64 << 10)
+#define PCPU_MIN_UNIT_SIZE PFN_ALIGN(32 << 10)
/*
* Percpu allocator can serve percpu allocations before slab is