/*
* This function is a NUMA-aware equivalent of calc_num_pages.
* It takes in the list of hugepage sizes and the
* number of pages thereof, and calculates the best number of
* pages of each size to fulfill the request for <memory> ram
*/
static int
calc_num_pages_per_socket(uint64_t * memory,
struct hugepage_info *hp_info,
struct hugepage_info *hp_used,
unsigned num_hp_info)
{
unsigned socket, j, i = 0;
unsigned requested, available;
int total_num_pages = 0;
uint64_t remaining_mem, cur_mem;
uint64_t total_mem = internal_config.memory;
if (num_hp_info == 0)
return -1;
/* if specific memory amounts per socket weren't requested */
if (internal_config.force_sockets == 0) {
int cpu_per_socket[RTE_MAX_NUMA_NODES];
size_t default_size, total_size;
unsigned lcore_id;
/* Compute number of cores per socket */
memset(cpu_per_socket, 0, sizeof(cpu_per_socket));
RTE_LCORE_FOREACH(lcore_id) {
cpu_per_socket[rte_lcore_to_socket_id(lcore_id)]++;
}
/*
* Automatically spread requested memory amongst detected sockets according
* to number of cores from cpu mask present on each socket
*/
total_size = internal_config.memory;
for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_size != 0; socket++) {
/* Set memory amount per socket */
default_size = (internal_config.memory * cpu_per_socket[socket])
/ rte_lcore_count();
/* Limit to maximum available memory on socket */
default_size = RTE_MIN(default_size, get_socket_mem_size(socket));
/* Update sizes */
memory[socket] = default_size;
total_size -= default_size;
}
/*
* If some memory is remaining, try to allocate it by getting all
* available memory from sockets, one after the other
*/
for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_size != 0; socket++) {
/* take whatever is available */
default_size = RTE_MIN(get_socket_mem_size(socket) - memory[socket],
total_size);
/* Update sizes */
memory[socket] += default_size;
total_size -= default_size;
}
}
static int calc_num_pages_per_socket(uint64_t *memory,
struct odp_hugepage_type *hp_info,
struct odp_hugepage_type *hp_used,
unsigned num_hp_info)
{
unsigned socket, j, i = 0;
unsigned requested, available;
int total_num_pages = 0;
uint64_t remaining_mem, cur_mem;
uint64_t total_mem = local_config.memory;
if (num_hp_info == 0)
return -1;
if (local_config.force_sockets == 0) {
int cpu_per_socket[ODP_MAX_NUMA_NODES];
size_t default_size, total_size;
unsigned core_id;
memset(cpu_per_socket, 0, sizeof(cpu_per_socket));
ODP_LCORE_FOREACH(core_id)
{
cpu_per_socket[odp_core_to_socket_id(core_id)]++;
}
total_size = local_config.memory;
for (socket = 0; socket < ODP_MAX_NUMA_NODES &&
total_size != 0; socket++) {
default_size =
(local_config.memory * cpu_per_socket[socket])
/ odp_core_num();
default_size = ODP_MIN(default_size,
get_socket_mem_size(socket));
memory[socket] = default_size;
total_size -= default_size;
}
for (socket = 0; socket < ODP_MAX_NUMA_NODES &&
total_size != 0; socket++) {
default_size =
ODP_MIN(get_socket_mem_size(socket)
- memory[socket], total_size);
memory[socket] += default_size;
total_size -= default_size;
}
}
/*
* This function is a NUMA-aware equivalent of calc_num_pages.
* It takes in the list of hugepage sizes and the
* number of pages thereof, and calculates the best number of
* pages of each size to fulfill the request for <memory> ram
*/
static int
calc_num_pages_per_socket(uint64_t * memory,
struct hugepage_info *hp_info,
struct hugepage_info *hp_used,
unsigned num_hp_info)
{
unsigned socket, j, i = 0;
unsigned requested, available;
int total_num_pages = 0;
uint64_t remaining_mem, cur_mem;
uint64_t total_mem = internal_config.memory;
if (num_hp_info == 0)
return -1;
for (socket = 0; socket < RTE_MAX_NUMA_NODES && total_mem != 0; socket++) {
/* if specific memory amounts per socket weren't requested */
if (internal_config.force_sockets == 0) {
/* take whatever is available */
memory[socket] = RTE_MIN(get_socket_mem_size(socket),
total_mem);
}
/* skips if the memory on specific socket wasn't requested */
for (i = 0; i < num_hp_info && memory[socket] != 0; i++){
hp_used[i].hugedir = hp_info[i].hugedir;
hp_used[i].num_pages[socket] = RTE_MIN(
memory[socket] / hp_info[i].hugepage_sz,
hp_info[i].num_pages[socket]);
cur_mem = hp_used[i].num_pages[socket] *
hp_used[i].hugepage_sz;
memory[socket] -= cur_mem;
total_mem -= cur_mem;
total_num_pages += hp_used[i].num_pages[socket];
/* check if we have met all memory requests */
if (memory[socket] == 0)
break;
/* check if we have any more pages left at this size, if so
* move on to next size */
if (hp_used[i].num_pages[socket] == hp_info[i].num_pages[socket])
continue;
/* At this point we know that there are more pages available that are
* bigger than the memory we want, so lets see if we can get enough
* from other page sizes.
*/
remaining_mem = 0;
for (j = i+1; j < num_hp_info; j++)
remaining_mem += hp_info[j].hugepage_sz *
hp_info[j].num_pages[socket];
/* is there enough other memory, if not allocate another page and quit */
if (remaining_mem < memory[socket]){
cur_mem = RTE_MIN(memory[socket],
hp_info[i].hugepage_sz);
memory[socket] -= cur_mem;
total_mem -= cur_mem;
hp_used[i].num_pages[socket]++;
total_num_pages++;
break; /* we are done with this socket*/
}
}
/* if we didn't satisfy all memory requirements per socket */
if (memory[socket] > 0) {
/* to prevent icc errors */
requested = (unsigned) (internal_config.socket_mem[socket] /
0x100000);
available = requested -
((unsigned) (memory[socket] / 0x100000));
RTE_LOG(INFO, EAL, "Not enough memory available on socket %u! "
"Requested: %uMB, available: %uMB\n", socket,
requested, available);
return -1;
}
}
/* if we didn't satisfy total memory requirements */
if (total_mem > 0) {
requested = (unsigned) (internal_config.memory / 0x100000);
available = requested - (unsigned) (total_mem / 0x100000);
RTE_LOG(INFO, EAL, "Not enough memory available! Requested: %uMB,"
" available: %uMB\n", requested, available);
return -1;
}
return total_num_pages;
}
