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authorTejun Heo <tj@kernel.org>2009-08-14 10:00:50 +0400
committerTejun Heo <tj@kernel.org>2009-08-14 10:00:50 +0400
commitf58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8 (patch)
tree9eb76a0d6aa34e56f8650fe98a5ce26891a522ab /Documentation/kernel-parameters.txt
parent08fc45806103e59a37418e84719b878f9bb32540 (diff)
downloadlinux-f58dc01ba2ca9fe3ab2ba4ca43d9c8a735cf62d8.tar.xz
percpu: generalize first chunk allocator selection
Now that all first chunk allocators are in mm/percpu.c, it makes sense to make generalize percpu_alloc kernel parameter. Define PCPU_FC_* and set pcpu_chosen_fc using early_param() in mm/percpu.c. Arch code can use the set value to determine which first chunk allocator to use. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt11
1 files changed, 6 insertions, 5 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 12e9eb77ee0d..dee9ce2e6cfa 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1919,11 +1919,12 @@ and is between 256 and 4096 characters. It is defined in the file
Format: { 0 | 1 }
See arch/parisc/kernel/pdc_chassis.c
- percpu_alloc= [X86] Select which percpu first chunk allocator to use.
- Allowed values are one of "lpage", "embed" and "page".
- See comments in arch/x86/kernel/setup_percpu.c for
- details on each allocator. This parameter is primarily
- for debugging and performance comparison.
+ percpu_alloc= Select which percpu first chunk allocator to use.
+ Currently supported values are "embed", "page" and
+ "lpage". Archs may support subset or none of the
+ selections. See comments in mm/percpu.c for details
+ on each allocator. This parameter is primarily for
+ debugging and performance comparison.
pf. [PARIDE]
See Documentation/blockdev/paride.txt.