util/bit_array: use spdk_realloc for process sharing

Change-Id: I8fe49388e7bec9306474f27de7c17e767dfa19e8
Signed-off-by: GangCao <gang.cao@intel.com>

include/spdk/env.h

@@ -63,6 +63,13 @@ spdk_malloc(size_t size, size_t align, uint64_t *phys_addr);
 void *
 spdk_zmalloc(size_t size, size_t align, uint64_t *phys_addr);
 
+/**
+ * Resize the allocated and pinned memory buffer with the given
+ *   new size and alignment. Existing contents are preserved.
+ */
+void *
+spdk_realloc(void *buf, size_t size, size_t align, uint64_t *phys_addr);
+
 /**
  * Free a memory buffer previously allocated with spdk_zmalloc.
  *   This call is never made from the performance path.

lib/env/env.c

@@ -63,6 +63,16 @@ spdk_zmalloc(size_t size, size_t align, uint64_t *phys_addr)
 	return buf;
 }
 
+void *
+spdk_realloc(void *buf, size_t size, size_t align, uint64_t *phys_addr)
+{
+	void *new_buf = rte_realloc(buf, size, align);
+	if (new_buf && phys_addr) {
+		*phys_addr = rte_malloc_virt2phy(new_buf);
+	}
+	return new_buf;
+}
+
 void
 spdk_free(void *buf)
 {

lib/util/bit_array.c

@@ -32,6 +32,7 @@
  */
 
 #include "spdk/bit_array.h"
+#include "spdk/env.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -77,7 +78,7 @@ spdk_bit_array_free(struct spdk_bit_array **bap)
 
 	ba = *bap;
 	*bap = NULL;
-	free(ba);
+	spdk_free(ba);
 }
 
 static inline uint32_t
@@ -113,7 +114,7 @@ spdk_bit_array_resize(struct spdk_bit_array **bap, uint32_t num_bits)
 	 */
 	new_size += SPDK_BIT_ARRAY_WORD_BYTES;
 
-	new_ba = (struct spdk_bit_array *)realloc(*bap, new_size);
+	new_ba = (struct spdk_bit_array *)spdk_realloc(*bap, new_size, 64, NULL);
 	if (!new_ba) {
 		return -ENOMEM;
 	}

test/lib/nvme/unit/test_env.c

@@ -51,6 +51,12 @@ spdk_zmalloc(size_t size, size_t align, uint64_t *phys_addr)
 	return buf;
 }
 
+void *
+spdk_realloc(void *buf, size_t size, size_t align, uint64_t *phys_addr)
+{
+	return realloc(buf, size);
+}
+
 void spdk_free(void *buf)
 {
 	free(buf);

test/lib/util/bit_array/bit_array_ut.c

@@ -37,6 +37,18 @@
 
 #include "bit_array.c"
 
+void *
+spdk_realloc(void *buf, size_t size, size_t align, uint64_t *phys_addr)
+{
+	return realloc(buf, size);
+}
+
+void
+spdk_free(void *buf)
+{
+	free(buf);
+}
+
 static void
 test_1bit(void)
 {