x86: add embedding percpu first chunk allocator

Browse source

Impact: add better first percpu allocation for !NUMA

On !NUMA, we can simply allocate contiguous memory and use it for the
first chunk without mapping it into vmalloc area.  As the memory area
is covered by the large page physical memory mapping, it allows the
dynamic perpcu allocator to not add any TLB overhead for the static
percpu area and whatever falls into the first chunk and the
implementation is very simple too.

Signed-off-by: Tejun Heo <tj@kernel.org>

...

This commit is contained in:

Tejun Heo 2009-02-24 11:57:21 +09:00

parent 5f5d8405d1

commit 89c9215165

1 changed files with 85 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

86

arch/x86/kernel/setup_percpu.c

View file