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mem: add prefer_freelist knob

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This commit is contained in:
Thomas Schoebel-Theuer 2024-03-21 10:22:39 +01:00
parent 43a77b8a70
commit 47f71d83cf
3 changed files with 6 additions and 3 deletions
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7
kernel/brick_mem.c
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@ -606,10 +606,9 @@ void __brick_block_free(void *data, int order, int cline)
#ifdef CONFIG_MARS_MEM_PREALLOC #ifdef CONFIG_MARS_MEM_PREALLOC
int brick_allow_freelist = 1; int brick_allow_freelist = 1;
EXPORT_SYMBOL_GPL(brick_allow_freelist); int brick_prefer_freelist = 1;
int brick_pre_reserve[BRICK_MAX_ORDER+1] = {}; int brick_pre_reserve[BRICK_MAX_ORDER+1] = {};
EXPORT_SYMBOL_GPL(brick_pre_reserve);
/* Note: we have no separate lists per CPU. /* Note: we have no separate lists per CPU.
* This should not hurt because the freelists are only used * This should not hurt because the freelists are only used
@ -933,7 +932,9 @@ void _brick_block_free(void *data, int len, int cline)
} }
#endif /* BRICK_DEBUG_MEM */ #endif /* BRICK_DEBUG_MEM */
#ifdef CONFIG_MARS_MEM_PREALLOC #ifdef CONFIG_MARS_MEM_PREALLOC
if (order > 0 && brick_allow_freelist && atomic_read(&freelist_count[order]) <= brick_mem_freelist_max[order]) { if (order > 0 && brick_allow_freelist &&
(brick_prefer_freelist ||
atomic_read(&freelist_count[order]) <= brick_mem_freelist_max[order])) {
_put_free(data, order); _put_free(data, order);
} else } else
#endif #endif

1
kernel/brick_mem.h
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@ -237,6 +237,7 @@ extern void _brick_block_free(void *data, int len, int cline);
#ifdef CONFIG_MARS_MEM_PREALLOC #ifdef CONFIG_MARS_MEM_PREALLOC
extern int brick_allow_freelist; extern int brick_allow_freelist;
extern int brick_prefer_freelist;
extern int brick_pre_reserve[BRICK_MAX_ORDER+1]; extern int brick_pre_reserve[BRICK_MAX_ORDER+1];
extern int brick_mem_freelist_max[BRICK_MAX_ORDER+1]; extern int brick_mem_freelist_max[BRICK_MAX_ORDER+1];

1
kernel/sy_old/mars_proc.c
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@ -650,6 +650,7 @@ struct ctl_table mars_table[] = {
INT_ENTRY("mem_used_raw_kb", brick_global_block_used,0400), INT_ENTRY("mem_used_raw_kb", brick_global_block_used,0400),
#ifdef CONFIG_MARS_MEM_PREALLOC #ifdef CONFIG_MARS_MEM_PREALLOC
INT_ENTRY("mem_allow_freelist", brick_allow_freelist, 0600), INT_ENTRY("mem_allow_freelist", brick_allow_freelist, 0600),
INT_ENTRY("mem_prefer_freelist", brick_prefer_freelist, 0600),
VEC_INT_ENTRY("mem_freelist_max", brick_mem_freelist_max, 0600, BRICK_MAX_ORDER+1), VEC_INT_ENTRY("mem_freelist_max", brick_mem_freelist_max, 0600, BRICK_MAX_ORDER+1),
VEC_INT_ENTRY("mem_alloc_count", brick_mem_alloc_count, 0400, BRICK_MAX_ORDER+1), VEC_INT_ENTRY("mem_alloc_count", brick_mem_alloc_count, 0400, BRICK_MAX_ORDER+1),
VEC_INT_ENTRY("mem_alloc_max", brick_mem_alloc_count, 0600, BRICK_MAX_ORDER+1), VEC_INT_ENTRY("mem_alloc_max", brick_mem_alloc_count, 0600, BRICK_MAX_ORDER+1),