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FlexRAN MAC: align allocated memory for lfds

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This commit is contained in:
Robert Schmidt
2018-09-03 18:10:28 +02:00
parent 1adbaa7a54
commit 9399bed23a
1 changed files with 11 additions and 2 deletions
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openair2/ENB_APP/CONTROL_MODULES/MAC/flexran_agent_mac.c
+11 -2
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@@ -1272,8 +1272,17 @@ void flexran_agent_init_mac_agent(mid_t mod_id) {
lfds700_misc_prng_init(&ps[mod_id]);
int num_elements = RINGBUFFER_SIZE + 1;
//Allow RINGBUFFER_SIZE messages to be stored in the ringbuffer at any time
dl_mac_config_array[mod_id] = malloc( sizeof(struct lfds700_ringbuffer_element) * num_elements);
lfds700_ringbuffer_init_valid_on_current_logical_core( &ringbuffer_state[mod_id], dl_mac_config_array[mod_id], num_elements, &ps[mod_id], NULL );
/* lfds700_ringbuffer_init_valid_on_current_logical_core()'s second argument
* must be aligned to LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES. From the
* documentation: "Heap allocated variables however will by no means be
* correctly aligned and an aligned malloc must be used." Therefore, we use
* posix_memalign */
i = posix_memalign((void **)&dl_mac_config_array[mod_id],
LFDS700_PAL_ATOMIC_ISOLATION_IN_BYTES,
sizeof(struct lfds700_ringbuffer_element) * num_elements);
AssertFatal(i == 0, "posix_memalign(): could not allocate aligned memory for lfds library\n");
lfds700_ringbuffer_init_valid_on_current_logical_core(&ringbuffer_state[mod_id],
dl_mac_config_array[mod_id], num_elements, &ps[mod_id], NULL);
for (i = 0; i < MAX_MOBILES_PER_ENB; i++) {
for (j = 0; j < 8; j++) {
if (RC.mac && RC.mac[mod_id])