diff options
| -rw-r--r-- | drivers/staging/zram/zram_drv.h | 3 | ||||
| -rw-r--r-- | drivers/staging/zsmalloc/Kconfig | 23 | ||||
| -rw-r--r-- | drivers/staging/zsmalloc/Makefile | 3 | ||||
| -rw-r--r-- | include/linux/zsmalloc.h (renamed from drivers/staging/zsmalloc/zsmalloc.h) | 0 | ||||
| -rw-r--r-- | mm/Kconfig | 25 | ||||
| -rw-r--r-- | mm/Makefile | 1 | ||||
| -rw-r--r-- | mm/zsmalloc.c (renamed from drivers/staging/zsmalloc/zsmalloc-main.c) | 3 |
7 files changed, 28 insertions, 30 deletions
diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h index 508a19f..1c39fed 100644 --- a/drivers/staging/zram/zram_drv.h +++ b/drivers/staging/zram/zram_drv.h @@ -17,8 +17,7 @@ #include <linux/spinlock.h> #include <linux/mutex.h> - -#include "../zsmalloc/zsmalloc.h" +#include <linux/zsmalloc.h> /* * Some arbitrary value. This is just to catch diff --git a/drivers/staging/zsmalloc/Kconfig b/drivers/staging/zsmalloc/Kconfig deleted file mode 100644 index e75611a..0000000 --- a/drivers/staging/zsmalloc/Kconfig +++ /dev/null @@ -1,23 +0,0 @@ -config ZSMALLOC - bool "Memory allocator for compressed pages" - default n - help - zsmalloc is a slab-based memory allocator designed to store - compressed RAM pages. zsmalloc uses virtual memory mapping - in order to reduce fragmentation. However, this results in a - non-standard allocator interface where a handle, not a pointer, is - returned by an alloc(). This handle must be mapped in order to - access the allocated space. - -config PGTABLE_MAPPING - bool "Use page table mapping to access object in zsmalloc" - depends on ZSMALLOC - help - By default, zsmalloc uses a copy-based object mapping method to - access allocations that span two pages. However, if a particular - architecture (ex, ARM) performs VM mapping faster than copying, - then you should select this. This causes zsmalloc to use page table - mapping rather than copying for object mapping. - - You can check speed with zsmalloc benchmark[1]. - [1] https://github.com/spartacus06/zsmalloc diff --git a/drivers/staging/zsmalloc/Makefile b/drivers/staging/zsmalloc/Makefile deleted file mode 100644 index b134848..0000000 --- a/drivers/staging/zsmalloc/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -zsmalloc-y := zsmalloc-main.o - -obj-$(CONFIG_ZSMALLOC) += zsmalloc.o diff --git a/drivers/staging/zsmalloc/zsmalloc.h b/include/linux/zsmalloc.h index c2eb174..c2eb174 100644 --- a/drivers/staging/zsmalloc/zsmalloc.h +++ b/include/linux/zsmalloc.h @@ -370,3 +370,28 @@ config CLEANCACHE in a negligible performance hit. If unsure, say Y to enable cleancache + +config ZSMALLOC + bool "Memory allocator for compressed pages" + depends on MMU + default n + help + zsmalloc is a slab-based memory allocator designed to store + compressed RAM pages. zsmalloc uses virtual memory mapping + in order to reduce fragmentation. However, this results in a + non-standard allocator interface where a handle, not a pointer, is + returned by an alloc(). This handle must be mapped in order to + access the allocated space. + +config PGTABLE_MAPPING + bool "Use page table mapping to access object in zsmalloc" + depends on ZSMALLOC + help + By default, zsmalloc uses a copy-based object mapping method to + access allocations that span two pages. However, if a particular + architecture (ex, ARM) performs VM mapping faster than copying, + then you should select this. This causes zsmalloc to use page table + mapping rather than copying for object mapping. + + You can check speed with zsmalloc benchmark[1]. + [1] https://github.com/spartacus06/zsmalloc diff --git a/mm/Makefile b/mm/Makefile index d65b93e..e13c7c8 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -51,3 +51,4 @@ obj-$(CONFIG_HWPOISON_INJECT) += hwpoison-inject.o obj-$(CONFIG_DEBUG_KMEMLEAK) += kmemleak.o obj-$(CONFIG_DEBUG_KMEMLEAK_TEST) += kmemleak-test.o obj-$(CONFIG_CLEANCACHE) += cleancache.o +obj-$(CONFIG_ZSMALLOC) += zsmalloc.o diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/mm/zsmalloc.c index 07186ab..6c60592 100644 --- a/drivers/staging/zsmalloc/zsmalloc-main.c +++ b/mm/zsmalloc.c @@ -91,8 +91,7 @@ #include <linux/hardirq.h> #include <linux/spinlock.h> #include <linux/types.h> - -#include "zsmalloc.h" +#include <linux/zsmalloc.h> /* * This must be power of 2 and greater than of equal to sizeof(link_free). |