X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Fmalloc_elem.c;h=c2c9461f1dfa636fb589436fc562cb316d3c67cb;hb=6a17919b0e2a482e0b3f505a048a2a3383e979e3;hp=d54a528ed6530a8690e4f1fc1a87a5de4bb58855;hpb=6d09256148567807b772347ec4ac363c4bcb6b5a;p=dpdk.git

diff --git a/lib/librte_eal/common/malloc_elem.c b/lib/librte_eal/common/malloc_elem.c
index d54a528ed6..c2c9461f1d 100644
--- a/lib/librte_eal/common/malloc_elem.c
+++ b/lib/librte_eal/common/malloc_elem.c
@@ -18,11 +18,23 @@
 #include <rte_common.h>
 #include <rte_spinlock.h>
 
+#include "eal_private.h"
 #include "eal_internal_cfg.h"
 #include "eal_memalloc.h"
 #include "malloc_elem.h"
 #include "malloc_heap.h"
 
+/*
+ * If debugging is enabled, freed memory is set to poison value
+ * to catch buggy programs. Otherwise, freed memory is set to zero
+ * to avoid having to zero in zmalloc
+ */
+#ifdef RTE_MALLOC_DEBUG
+#define MALLOC_POISON	       0x6b
+#else
+#define MALLOC_POISON	       0
+#endif
+
 size_t
 malloc_elem_find_max_iova_contig(struct malloc_elem *elem, size_t align)
 {
@@ -31,6 +43,8 @@ malloc_elem_find_max_iova_contig(struct malloc_elem *elem, size_t align)
 	rte_iova_t expected_iova;
 	struct rte_memseg *ms;
 	size_t page_sz, cur, max;
+	const struct internal_config *internal_conf =
+		eal_get_internal_configuration();
 
 	page_sz = (size_t)elem->msl->page_sz;
 	data_start = RTE_PTR_ADD(elem, MALLOC_ELEM_HEADER_LEN);
@@ -49,7 +63,7 @@ malloc_elem_find_max_iova_contig(struct malloc_elem *elem, size_t align)
 	 */
 	if (!elem->msl->external &&
 			(rte_eal_iova_mode() == RTE_IOVA_VA ||
-				(internal_config.legacy_mem &&
+				(internal_conf->legacy_mem &&
 					rte_eal_has_hugepages())))
 		return RTE_PTR_DIFF(data_end, contig_seg_start);
 
@@ -160,7 +174,7 @@ malloc_elem_insert(struct malloc_elem *elem)
 		next_elem = NULL;
 		heap->last = elem;
 	} else {
-		/* the new memory is somewhere inbetween start and end */
+		/* the new memory is somewhere between start and end */
 		uint64_t dist_from_start, dist_from_end;
 
 		dist_from_end = RTE_PTR_DIFF(heap->last, elem);
@@ -296,6 +310,11 @@ split_elem(struct malloc_elem *elem, struct malloc_elem *split_pt)
 	elem->next = split_pt;
 	elem->size = old_elem_size;
 	set_trailer(elem);
+	if (elem->pad) {
+		/* Update inner padding inner element size. */
+		elem = RTE_PTR_ADD(elem, elem->pad);
+		elem->size = old_elem_size - elem->pad;
+	}
 }
 
 /*
@@ -324,18 +343,24 @@ remove_elem(struct malloc_elem *elem)
 static int
 next_elem_is_adjacent(struct malloc_elem *elem)
 {
+	const struct internal_config *internal_conf =
+		eal_get_internal_configuration();
+
 	return elem->next == RTE_PTR_ADD(elem, elem->size) &&
 			elem->next->msl == elem->msl &&
-			(!internal_config.match_allocations ||
+			(!internal_conf->match_allocations ||
 			 elem->orig_elem == elem->next->orig_elem);
 }
 
 static int
 prev_elem_is_adjacent(struct malloc_elem *elem)
 {
+	const struct internal_config *internal_conf =
+		eal_get_internal_configuration();
+
 	return elem == RTE_PTR_ADD(elem->prev, elem->prev->size) &&
 			elem->prev->msl == elem->msl &&
-			(!internal_config.match_allocations ||
+			(!internal_conf->match_allocations ||
 			 elem->orig_elem == elem->prev->orig_elem);
 }
 
@@ -366,14 +391,14 @@ malloc_elem_free_list_index(size_t size)
 		return 0;
 
 	/* Find next power of 2 >= size. */
-	log2 = sizeof(size) * 8 - __builtin_clzl(size-1);
+	log2 = sizeof(size) * 8 - __builtin_clzl(size - 1);
 
 	/* Compute freelist index, based on log2(size). */
 	index = (log2 - MALLOC_MINSIZE_LOG2 + MALLOC_LOG2_INCREMENT - 1) /
-	        MALLOC_LOG2_INCREMENT;
+			MALLOC_LOG2_INCREMENT;
 
-	return index <= RTE_HEAP_NUM_FREELISTS-1?
-	        index: RTE_HEAP_NUM_FREELISTS-1;
+	return index <= RTE_HEAP_NUM_FREELISTS - 1 ?
+			index : RTE_HEAP_NUM_FREELISTS - 1;
 }
 
 /*
@@ -471,6 +496,10 @@ join_elem(struct malloc_elem *elem1, struct malloc_elem *elem2)
 	else
 		elem1->heap->last = elem1;
 	elem1->next = next;
+	if (elem1->pad) {
+		struct malloc_elem *inner = RTE_PTR_ADD(elem1, elem1->pad);
+		inner->size = elem1->size - elem1->pad;
+	}
 }
 
 struct malloc_elem *
@@ -494,7 +523,7 @@ malloc_elem_join_adjacent_free(struct malloc_elem *elem)
 		join_elem(elem, elem->next);
 
 		/* erase header, trailer and pad */
-		memset(erase, 0, erase_len);
+		memset(erase, MALLOC_POISON, erase_len);
 	}
 
 	/*
@@ -518,7 +547,7 @@ malloc_elem_join_adjacent_free(struct malloc_elem *elem)
 		join_elem(new_elem, elem);
 
 		/* erase header, trailer and pad */
-		memset(erase, 0, erase_len);
+		memset(erase, MALLOC_POISON, erase_len);
 
 		elem = new_elem;
 	}
@@ -549,7 +578,8 @@ malloc_elem_free(struct malloc_elem *elem)
 	/* decrease heap's count of allocated elements */
 	elem->heap->alloc_count--;
 
-	memset(ptr, 0, data_len);
+	/* poison memory */
+	memset(ptr, MALLOC_POISON, data_len);
 
 	return elem;
 }