zsmalloc: add Kconfig for enabling page table method

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Zsmalloc has two methods 1) copy-based and 2) pte based to
access objects that span two pages.
You can see history why we supported two approach from [1].

But it was bad choice that adding hard coding to select arch
which want to use pte based method because there are lots of
SoC in an architecure and they can have different cache size,
CPU speed and so on so it would be better to expose it to user
as selectable Kconfig option like Andrew Morton suggested.

[1] https://lkml.org/lkml/2012/7/11/58

Acked-by: Nitin Gupta <ngupta@vflare.org>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Minchan Kim 2013-12-11 11:04:36 +09:00 • committed by Greg Kroah-Hartman

parent 99ec297ad6

commit 1b945aeef0

2 changed files with 17 additions and 15 deletions

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13

drivers/staging/zsmalloc/Kconfig

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19

drivers/staging/zsmalloc/zsmalloc-main.c

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