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mm/cma: make MAX_CMA_AREAS = CONFIG_CMA_AREAS

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There is no real difference between the global area, and other
additionally configured CMA areas via CONFIG_CMA_AREAS that always
defaults without user input.  This makes MAX_CMA_AREAS same as
CONFIG_CMA_AREAS, also incrementing its default values, thus maintaining
current default for MAX_CMA_AREAS both for UMA and NUMA systems.

Link: https://lkml.kernel.org/r/20240205051929.298559-1-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2024-02-05 10:49:29 +05:30 committed by Andrew Morton
parent fe58582c0e
commit 73307523c9
2 changed files with 4 additions and 8 deletions
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6
include/linux/cma.h
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@ -6,12 +6,8 @@
#include <linux/types.h>
#include <linux/numa.h>
/*
* There is always at least global CMA area and a few optional
* areas configured in kernel .config.
*/
#ifdef CONFIG_CMA_AREAS
#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
#define MAX_CMA_AREAS CONFIG_CMA_AREAS
#endif
#define CMA_MAX_NAME 64

6
mm/Kconfig
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@ -917,14 +917,14 @@ config CMA_SYSFS
config CMA_AREAS
int "Maximum count of the CMA areas"
depends on CMA
default 19 if NUMA
default 7
default 20 if NUMA
default 8
help
CMA allows to create CMA areas for particular purpose, mainly,
used as device private area. This parameter sets the maximum
number of CMA area in the system.
If unsure, leave the default value "7" in UMA and "19" in NUMA.
If unsure, leave the default value "8" in UMA and "20" in NUMA.
config MEM_SOFT_DIRTY
bool "Track memory changes"