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codec_mm: scatter cache soft alloc [1/1]

Browse Source 
PD#SWPL-161136

Problem:
Flexible growth of cache memory.

Solution:
Scatter cache alloc small slot when force_cache_on closed.

Verify:
sc2

Change-Id: I5162ddf2dfed5205225f18283c2f8402a75fb977
Signed-off-by: Hao Shi <hao.shi@amlogic.com>
This commit is contained in:
Hao Shi
2024-04-02 11:10:10 +00:00
committed by Luan Yuan
parent 6e14143924
commit 503bc2c462
1 changed files with 21 additions and 3 deletions
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drivers/media/common/codec_mm/codec_mm_scatter.c
+21 -3
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@@ -47,6 +47,14 @@
})
#endif
#ifndef MAX
#define MAX(a, b) ({ \
const typeof(a) _a = a; \
const typeof(b) _b = b; \
_a > _b ? _a : _b; \
})
#endif
#define PAGE_COUNT(x) (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
u32 scatter_align_pages_size = 128;
@@ -1032,7 +1040,7 @@ static int codec_mm_page_alloc_from_one_pages(struct codec_mm_scatter_mgt *smgt,
}
static int codec_mm_page_alloc_from_slot(struct codec_mm_scatter_mgt *smgt,
phy_addr_type *pages, int num)
phy_addr_type *pages, int num, int is_cache)
{
#define INSTR1 "alloc default cma size fail,try %d pages\n"
struct codec_mm_slot *slot = NULL;
@@ -1055,8 +1063,18 @@ static int codec_mm_page_alloc_from_slot(struct codec_mm_scatter_mgt *smgt,
if (smgt->total_page_num <= 0 || /*no codec mm. */
smgt->alloced_page_num == smgt->total_page_num ||
list_empty(&smgt->free_list)) {
u32 alloc_pages = 0;
int alloc_unit_pages = scatter_get_unit_pages();
if (is_cache && !smgt->force_cache_on) {
// min slot size as 4M
alloc_unit_pages = MAX(alloc_unit_pages, 4 * SZ_1M >> PAGE_SHIFT);
alloc_pages = ALIGN(neednum, alloc_unit_pages);
pr_dbg("alloc pages is %d cache_pages is %d keep_size_page is %d\n",
alloc_pages, smgt->cached_pages, smgt->keep_size_PAGE);
}
/*codec_mm_scatter_info_dump(NULL, 0);*/
slot = codec_mm_slot_alloc(smgt, 0, 0);
slot = codec_mm_slot_alloc(smgt, alloc_pages * PAGE_SIZE, 0);
if (!slot) {
u32 alloc_pages =
smgt->try_alloc_in_cma_page_cnt / 4;
@@ -1292,7 +1310,7 @@ static int codec_mm_page_alloc_all_locked(struct codec_mm_scatter_mgt *smgt,
MMU_ALLOC_from_slot);
new_alloc = codec_mm_page_alloc_from_slot(smgt,
pages +
alloced, num - alloced);
alloced, num - alloced, iscache);
ATRACE_COUNTER("mmu alloc", MMU_ALLOC_from_slot_end);
if (new_alloc <= 0)
can_from_slot = 0;