mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-31 18:09:19 +00:00
staging: zsmalloc: add ZS_MAX_PAGES_PER_ZSPAGE
This patch moves where max_zspage_order is declared and changes its meaning. "Order" typically implies 2^order of something; however, it is currently being used as the "maximum number of single pages in a zspage". To add clarity, ZS_MAX_ZSPAGE_ORDER is now used to calculate ZS_MAX_PAGES_PER_ZSPAGE, which is 2^ZS_MAX_ZSPAGE_ORDER and is the upper bound on the number of pages in a zspage. Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com> Acked-by: Nitin Gupta <ngupta@vflare.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
aafefe932a
commit
84d4faaba2
2 changed files with 8 additions and 7 deletions
|
@ -186,7 +186,7 @@ static int get_zspage_order(int class_size)
|
|||
/* zspage order which gives maximum used size per KB */
|
||||
int max_usedpc_order = 1;
|
||||
|
||||
for (i = 1; i <= max_zspage_order; i++) {
|
||||
for (i = 1; i <= ZS_MAX_PAGES_PER_ZSPAGE; i++) {
|
||||
int zspage_size;
|
||||
int waste, usedpc;
|
||||
|
||||
|
|
|
@ -25,6 +25,13 @@
|
|||
*/
|
||||
#define ZS_ALIGN 8
|
||||
|
||||
/*
|
||||
* A single 'zspage' is composed of up to 2^N discontiguous 0-order (single)
|
||||
* pages. ZS_MAX_ZSPAGE_ORDER defines upper limit on N.
|
||||
*/
|
||||
#define ZS_MAX_ZSPAGE_ORDER 2
|
||||
#define ZS_MAX_PAGES_PER_ZSPAGE (_AC(1, UL) << ZS_MAX_ZSPAGE_ORDER)
|
||||
|
||||
/*
|
||||
* Object location (<PFN>, <obj_idx>) is encoded as
|
||||
* as single (void *) handle value.
|
||||
|
@ -58,12 +65,6 @@
|
|||
#define ZS_SIZE_CLASSES ((ZS_MAX_ALLOC_SIZE - ZS_MIN_ALLOC_SIZE) / \
|
||||
ZS_SIZE_CLASS_DELTA + 1)
|
||||
|
||||
/*
|
||||
* A single 'zspage' is composed of N discontiguous 0-order (single) pages.
|
||||
* This defines upper limit on N.
|
||||
*/
|
||||
static const int max_zspage_order = 4;
|
||||
|
||||
/*
|
||||
* We do not maintain any list for completely empty or full pages
|
||||
*/
|
||||
|
|
Loading…
Reference in a new issue