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malloc: make join elements function public

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Down the line, we will need to join free segments to determine
whether the resulting contiguous free space is bigger than a
page size, allowing to free some memory back to the system.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Tested-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Tested-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
This commit is contained in:
Anatoly Burakov 2018-04-11 13:29:41 +01:00 committed by Thomas Monjalon
parent 180698a82c
commit f21aa4ec9d
2 changed files with 6 additions and 3 deletions
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6
lib/librte_eal/common/malloc_elem.c
View File

@ -325,8 +325,8 @@ join_elem(struct malloc_elem *elem1, struct malloc_elem *elem2)
elem1->next = next;
}
static struct malloc_elem *
elem_join_adjacent_free(struct malloc_elem *elem)
struct malloc_elem *
malloc_elem_join_adjacent_free(struct malloc_elem *elem)
{
/*
* check if next element exists, is adjacent and is free, if so join
@ -388,7 +388,7 @@ malloc_elem_free(struct malloc_elem *elem)
ptr = RTE_PTR_ADD(elem, sizeof(*elem));
data_len = elem->size - MALLOC_ELEM_OVERHEAD;
elem = elem_join_adjacent_free(elem);
elem = malloc_elem_join_adjacent_free(elem);
malloc_elem_free_list_insert(elem);

3
lib/librte_eal/common/malloc_elem.h
View File

@ -141,6 +141,9 @@ malloc_elem_alloc(struct malloc_elem *elem, size_t size,
int
malloc_elem_free(struct malloc_elem *elem);
struct malloc_elem *
malloc_elem_join_adjacent_free(struct malloc_elem *elem);
/*
* attempt to resize a malloc_elem by expanding into any free space
* immediately after it in memory.