Defined in 1 files as a function:
Referenced in 1 files:
Smatch caller information:
mm/page_alloc.c __move_freepages_block_isolate() -> split_large_buddy()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | zone | 4096-ptr_max |
| PARAM_VALUE | 0 | zone->zone_start_pfn | 0-12384898975268864 |
| PARAM_VALUE | 1 | page | 4096-ptr_max |
| PARAM_VALUE | 1 | page->flags.f | 0-18446744073709551614 |
| PARAM_VALUE | 1 | page->page_type | u32max |
| PARAM_VALUE | 1 | page->private | 0 |
| PARAM_VALUE | 2 | pfn | 0-18446744073709551614 |
| PARAM_VALUE | 4 | fpi | 0 |
| CAPPED_DATA | 0 | zone | 1 |
| CAPPED_DATA | 0 | zone->zone_start_pfn | 1 |
| CAPPED_DATA | 2 | pfn | 1 |
| CAPPED_DATA | 2 | pfn | 1 |
| DATA_SOURCE | 0 | zone | $0 |
| DATA_SOURCE | 2 | pfn | r find_large_buddy |
| DATA_SOURCE | 3 | order | r buddy_order |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| LOCK2 | irq | ||
| LOCK2 | 0 | &zone->lock | |
| HALF_LOCKED2 | &dev->mutex | ||
| HALF_LOCKED2 | global &pcp_batch_high_lock | ||
| TYPE_LOCK | (struct zone)->lock |
mm/page_alloc.c free_one_page() -> split_large_buddy()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 1 | page | 4096-ptr_max |
| PARAM_VALUE | 2 | pfn | 0-12384898975264768,9223396226110586880-u64max |
| PARAM_VALUE | 4 | fpi | 0,2,4,8 |
| DATA_SOURCE | 0 | zone | $0 |
| DATA_SOURCE | 4 | fpi | $4 |
| BIT_INFO | 4 | fpi | 0x0,0xb |
| HARD_MAX | 4 | fpi | 8 |
| PREEMPT_ADD | <- disables preempt | ||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| UNITS | 1 | page | unit_byte |
| UNITS | 2 | pfn | unit_byte |
| UNITS | 3 | order | unit_byte |
| LOCK2 | flags | ||
| LOCK2 | 0 | &zone->lock | |
| TYPE_LOCK | (struct zone)->lock |
mm/page_alloc.c free_one_page() -> split_large_buddy()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 1 | page | 4096-ptr_max |
| PARAM_VALUE | 4 | fpi | 0,2,4,8 |
| BUF_SIZE | 1 | page | (-1),1-s32max |
| BUF_SIZE | 1 | page | (-1),1-s32max |
| CAPPED_DATA | 1 | page | 1 |
| DATA_SOURCE | 0 | zone | $0 |
| DATA_SOURCE | 1 | page | $1 |
| DATA_SOURCE | 2 | pfn | $2 |
| DATA_SOURCE | 3 | order | $3 |
| DATA_SOURCE | 4 | fpi | $4 |
| NOSPEC | 3 | order | |
| NOSPEC | 3 | order | |
| HARD_MAX | 4 | fpi | 8 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| HOST_DATA | 1 | page | 4096-s32max[c] |
| HOST_DATA | 1 | page->private | 0-9[c] |
| HOST_DATA | 3 | order | 1-10[c] |
| USER_DATA | 1 | page | 4096-s32max[c] |
| USER_DATA | 1 | page->private | 0-9[c] |
| USER_DATA | 3 | order | 1-31[c] |
| UNITS | 1 | page | unit_page |
| UNITS | 2 | pfn | unit_page |
| UNITS | 3 | order | unit_byte |
| LOCK2 | flags | ||
| LOCK2 | 0 | &zone->lock | |
| TYPE_LOCK | (struct zone)->lock |