/*-
* BSD LICENSE
*
- * Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
* are met:
*
- * * Redistributions of source code must retain the above copyright
+ * * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
* distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
*/
#include <stdint.h>
#include <stddef.h>
malloc_heap_add_memzone(struct malloc_heap *heap, size_t size, unsigned align)
{
const unsigned mz_flags = 0;
- const size_t min_size = get_malloc_memzone_size();
+ const size_t block_size = get_malloc_memzone_size();
/* ensure the data we want to allocate will fit in the memzone */
- size_t mz_size = size + align + MALLOC_ELEM_OVERHEAD * 2;
- if (mz_size < min_size)
- mz_size = min_size;
+ const size_t min_size = size + align + MALLOC_ELEM_OVERHEAD * 2;
+ const struct rte_memzone *mz = NULL;
+
+ size_t mz_size = min_size;
+ if (mz_size < block_size)
+ mz_size = block_size;
char mz_name[RTE_MEMZONE_NAMESIZE];
rte_snprintf(mz_name, sizeof(mz_name), "MALLOC_S%u_HEAP_%u",
heap->numa_socket, heap->mz_count++);
- const struct rte_memzone *mz = rte_memzone_reserve(mz_name, mz_size,
- heap->numa_socket, mz_flags);
+
+ /* try getting a block. if we fail and we don't need as big a block
+ * as given in the config, we can shrink our request and try again
+ */
+ do {
+ mz = rte_memzone_reserve(mz_name, mz_size,
+ heap->numa_socket, mz_flags);
+ if (mz == NULL)
+ mz_size /= 2;
+ } while (mz == NULL && mz_size > min_size);
if (mz == NULL)
return -1;
start_elem->next_free = heap->free_head;
heap->free_head = start_elem;
+ /* increase heap total size by size of new memzone */
+ heap->total_size+=mz_size - MALLOC_ELEM_OVERHEAD;
return 0;
}
heap->free_head = NULL;
heap->mz_count = 0;
+ heap->alloc_count = 0;
+ heap->total_size = 0;
/*
* Find NUMA socket of heap that is being initialised, so that
* malloc_heaps[n].numa_socket == n
find_suitable_element(struct malloc_heap *heap, size_t size,
unsigned align, struct malloc_elem **prev)
{
- struct malloc_elem *elem = heap->free_head;
+ struct malloc_elem *elem, *min_elem, *min_prev;
+ size_t min_sz;
+
+ elem = heap->free_head;
+ min_elem = NULL;
+ min_prev = NULL;
+ min_sz = (size_t) SIZE_MAX;
*prev = NULL;
+
while(elem){
- if (malloc_elem_can_hold(elem, size, align))
- break;
- *prev = elem;
+ if (malloc_elem_can_hold(elem, size, align)) {
+ if (min_sz > elem->size) {
+ min_elem = elem;
+ *prev = min_prev;
+ min_sz = elem->size;
+ }
+ }
+ min_prev = elem;
elem = elem->next_free;
}
- return elem;
+ return (min_elem);
}
/*
size = CACHE_LINE_ROUNDUP(size);
align = CACHE_LINE_ROUNDUP(align);
rte_spinlock_lock(&heap->lock);
-
struct malloc_elem *prev, *elem = find_suitable_element(heap,
size, align, &prev);
if (elem == NULL){
- malloc_heap_add_memzone(heap, size, align);
- elem = find_suitable_element(heap, size, align, &prev);
+ if ((malloc_heap_add_memzone(heap, size, align)) == 0)
+ elem = find_suitable_element(heap, size, align, &prev);
}
- if (elem != NULL)
+
+ if (elem != NULL){
elem = malloc_elem_alloc(elem, size, align, prev);
+ /* increase heap's count of allocated elements */
+ heap->alloc_count++;
+ }
rte_spinlock_unlock(&heap->lock);
return elem == NULL ? NULL : (void *)(&elem[1]);
+
}
+
+/*
+ * Function to retrieve data for heap on given socket
+ */
+int
+malloc_heap_get_stats(struct malloc_heap *heap,
+ struct rte_malloc_socket_stats *socket_stats)
+{
+ if (!heap->initialised)
+ return -1;
+
+ struct malloc_elem *elem = heap->free_head;
+
+ /* Initialise variables for heap */
+ socket_stats->free_count = 0;
+ socket_stats->heap_freesz_bytes = 0;
+ socket_stats->greatest_free_size = 0;
+
+ /* Iterate through free list */
+ while(elem) {
+ socket_stats->free_count++;
+ socket_stats->heap_freesz_bytes += elem->size;
+ if (elem->size > socket_stats->greatest_free_size)
+ socket_stats->greatest_free_size = elem->size;
+
+ elem = elem->next_free;
+ }
+ /* Get stats on overall heap and allocated memory on this heap */
+ socket_stats->heap_totalsz_bytes = heap->total_size;
+ socket_stats->heap_allocsz_bytes = (socket_stats->heap_totalsz_bytes -
+ socket_stats->heap_freesz_bytes);
+ socket_stats->alloc_count = heap->alloc_count;
+ return 0;
+}
+
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