[dpdk-dev] [PATCH v6 06/70] malloc: make malloc_elem_join_adjacent_free public

[Anatoly Burakov]

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.bura...@intel.com>
Tested-by: Santosh Shukla <santosh.shu...@caviumnetworks.com>
Tested-by: Hemant Agrawal <hemant.agra...@nxp.com>
Tested-by: Gowrishankar Muthukrishnan <gowrishanka...@linux.vnet.ibm.com>
---
 lib/librte_eal/common/malloc_elem.c | 6 +++---
 lib/librte_eal/common/malloc_elem.h | 3 +++
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/lib/librte_eal/common/malloc_elem.c 
b/lib/librte_eal/common/malloc_elem.c
index e02ed88..2291ee1 100644
--- a/lib/librte_eal/common/malloc_elem.c
+++ b/lib/librte_eal/common/malloc_elem.c
@@ -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);
 
diff --git a/lib/librte_eal/common/malloc_elem.h 
b/lib/librte_eal/common/malloc_elem.h
index 40e8eb5..99921d2 100644
--- a/lib/librte_eal/common/malloc_elem.h
+++ b/lib/librte_eal/common/malloc_elem.h
@@ -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.
-- 
2.7.4