[PATCH] eal: change alloc_sz calculation which may cause unnecessarily allocation

[Fidaullah Noonari]

In try_expand_heap() alloc_sz is calculated which may result in 
unnecessary allocation of whole huge page, this may cause allocation
limit from system or eal

In response to this mail:
<CAEYuUWCnRZNwxiOHEeTHw0Gy9aFJRLZtvAG9g=smuUvUEMcFXg at mail.gmail.com>

Signed-off-by: Fidaullah Noonari <fidaullah.noonari at emumba.com>
---
 lib/eal/common/malloc_heap.c | 2 +-
 lib/eal/common/malloc_mp.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/eal/common/malloc_heap.c b/lib/eal/common/malloc_heap.c
index 27a52266ad..e348e385e4 100644
--- a/lib/eal/common/malloc_heap.c
+++ b/lib/eal/common/malloc_heap.c
@@ -402,7 +402,7 @@ try_expand_heap_primary(struct malloc_heap *heap, uint64_t pg_sz,
 	int n_segs;
 	bool callback_triggered = false;
 
-	alloc_sz = RTE_ALIGN_CEIL(align + elt_size +
+	alloc_sz = RTE_ALIGN_CEIL(RTE_ALIGN_CEIL(align, elt_size) +
 			MALLOC_ELEM_OVERHEAD, pg_sz);
 	n_segs = alloc_sz / pg_sz;
 
diff --git a/lib/eal/common/malloc_mp.c b/lib/eal/common/malloc_mp.c
index 2b8eb51067..1b79ed5e21 100644
--- a/lib/eal/common/malloc_mp.c
+++ b/lib/eal/common/malloc_mp.c
@@ -249,7 +249,7 @@ handle_alloc_request(const struct malloc_mp_req *m,
 		return -1;
 	}
 
-	alloc_sz = RTE_ALIGN_CEIL(ar->align + ar->elt_size +
+	alloc_sz = RTE_ALIGN_CEIL(RTE_ALIGN_CEIL(ar->align, ar->elt_size) +
 			MALLOC_ELEM_OVERHEAD, ar->page_sz);
 	n_segs = alloc_sz / ar->page_sz;
 
-- 
2.25.1