Malloc heap is now a doubly linked list, so it's now possible to
iterate over each malloc element regardless of its state.
Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
Notes:
v3: mark function as experimental
lib/librte_eal/common/include/rte_malloc.h | 10 ++++++++++
lib/librte_eal/common/malloc_elem.c | 24 ++++++++++++++++++++++++
lib/librte_eal/common/malloc_elem.h | 6 ++++++
lib/librte_eal/common/malloc_heap.c | 22 ++++++++++++++++++++++
lib/librte_eal/common/malloc_heap.h | 3 +++
lib/librte_eal/common/rte_malloc.c | 17 +++++++++++++++++
lib/librte_eal/rte_eal_version.map | 1 +
7 files changed, 83 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_malloc.h
b/lib/librte_eal/common/include/rte_malloc.h
index f02a8ba..a9fb7e4 100644
--- a/lib/librte_eal/common/include/rte_malloc.h
+++ b/lib/librte_eal/common/include/rte_malloc.h
@@ -13,6 +13,7 @@
#include <stdio.h>
#include <stddef.h>
+#include <rte_compat.h>
#include <rte_memory.h>
#ifdef __cplusplus
@@ -278,6 +279,15 @@ void
rte_malloc_dump_stats(FILE *f, const char *type);
/**
+ * Dump contents of all malloc heaps to a file.
+ *
+ * @param f
+ * A pointer to a file for output
+ */
+void __rte_experimental
+rte_malloc_dump_heaps(FILE *f);
+
+/**
* Set the maximum amount of allocated memory for this type.
*
* This is not yet implemented
diff --git a/lib/librte_eal/common/malloc_elem.c
b/lib/librte_eal/common/malloc_elem.c
index eb41200..e02ed88 100644
--- a/lib/librte_eal/common/malloc_elem.c
+++ b/lib/librte_eal/common/malloc_elem.c
@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
+#include <inttypes.h>
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
@@ -434,3 +435,26 @@ malloc_elem_resize(struct malloc_elem *elem, size_t size)
}
return 0;
}
+
+static inline const char *
+elem_state_to_str(enum elem_state state)
+{
+ switch (state) {
+ case ELEM_PAD:
+ return "PAD";
+ case ELEM_BUSY:
+ return "BUSY";
+ case ELEM_FREE:
+ return "FREE";
+ }
+ return "ERROR";
+}
+
+void
+malloc_elem_dump(const struct malloc_elem *elem, FILE *f)
+{
+ fprintf(f, "Malloc element at %p (%s)\n", elem,
+ elem_state_to_str(elem->state));
+ fprintf(f, " len: 0x%zx pad: 0x%" PRIx32 "\n", elem->size, elem->pad);
+ fprintf(f, " prev: %p next: %p\n", elem->prev, elem->next);
+}
diff --git a/lib/librte_eal/common/malloc_elem.h
b/lib/librte_eal/common/malloc_elem.h
index 238e451..40e8eb5 100644
--- a/lib/librte_eal/common/malloc_elem.h
+++ b/lib/librte_eal/common/malloc_elem.h
@@ -149,6 +149,12 @@ int
malloc_elem_resize(struct malloc_elem *elem, size_t size);
/*
+ * dump contents of malloc elem to a file.
+ */
+void
+malloc_elem_dump(const struct malloc_elem *elem, FILE *f);
+
+/*
* Given an element size, compute its freelist index.
*/
size_t
diff --git a/lib/librte_eal/common/malloc_heap.c
b/lib/librte_eal/common/malloc_heap.c
index 9c95166..44538d7 100644
--- a/lib/librte_eal/common/malloc_heap.c
+++ b/lib/librte_eal/common/malloc_heap.c
@@ -217,6 +217,28 @@ malloc_heap_get_stats(struct malloc_heap *heap,
return 0;
}
+/*
+ * Function to retrieve data for heap on given socket
+ */
+void
+malloc_heap_dump(struct malloc_heap *heap, FILE *f)
+{
+ struct malloc_elem *elem;
+
+ rte_spinlock_lock(&heap->lock);
+
+ fprintf(f, "Heap size: 0x%zx\n", heap->total_size);
+ fprintf(f, "Heap alloc count: %u\n", heap->alloc_count);
+
+ elem = heap->first;
+ while (elem) {
+ malloc_elem_dump(elem, f);
+ elem = elem->next;
+ }
+
+ rte_spinlock_unlock(&heap->lock);
+}
+
int
rte_eal_malloc_heap_init(void)
{
diff --git a/lib/librte_eal/common/malloc_heap.h
b/lib/librte_eal/common/malloc_heap.h
index ab0005c..bb28422 100644
--- a/lib/librte_eal/common/malloc_heap.h
+++ b/lib/librte_eal/common/malloc_heap.h
@@ -37,6 +37,9 @@ int
malloc_heap_get_stats(struct malloc_heap *heap,
struct rte_malloc_socket_stats *socket_stats);
+void
+malloc_heap_dump(struct malloc_heap *heap, FILE *f);
+
int
rte_eal_malloc_heap_init(void);
diff --git a/lib/librte_eal/common/rte_malloc.c
b/lib/librte_eal/common/rte_malloc.c
index 970813e..f11a822 100644
--- a/lib/librte_eal/common/rte_malloc.c
+++ b/lib/librte_eal/common/rte_malloc.c
@@ -182,6 +182,23 @@ rte_malloc_get_socket_stats(int socket,
}
/*
+ * Function to dump contents of all heaps
+ */
+void __rte_experimental
+rte_malloc_dump_heaps(FILE *f)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ unsigned int idx;
+
+ for (idx = 0; idx < rte_socket_count(); idx++) {
+ unsigned int socket = rte_socket_id_by_idx(idx);
+ fprintf(f, "Heap on socket %i:\n", socket);
+ malloc_heap_dump(&mcfg->malloc_heaps[socket], f);
+ }
+
+}
+
+/*
* Print stats on memory type. If type is NULL, info on all types is printed
*/
void
diff --git a/lib/librte_eal/rte_eal_version.map
b/lib/librte_eal/rte_eal_version.map
index dd38783..d9fc458 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -222,6 +222,7 @@ EXPERIMENTAL {
rte_eal_hotplug_remove;
rte_eal_mbuf_user_pool_ops;
rte_log_register_type_and_pick_level;
+ rte_malloc_dump_heaps;
rte_mp_action_register;
rte_mp_action_unregister;
rte_mp_reply;
--
2.7.4
