@@ -12,6 +12,7 @@
#include <rte_eal.h>
#include <rte_eal_memconfig.h>
+#include <rte_errno.h>
#include <rte_log.h>
#include <rte_string_fns.h>
#include "eal_private.h"
@@ -300,3 +301,217 @@ rte_eal_using_phys_addrs(void)
{
return 0;
}
+
+static uint64_t
+get_mem_amount(uint64_t page_sz, uint64_t max_mem)
+{
+ uint64_t area_sz, max_pages;
+
+ /* limit to RTE_MAX_MEMSEG_PER_LIST pages or RTE_MAX_MEM_MB_PER_LIST */
+ max_pages = RTE_MAX_MEMSEG_PER_LIST;
+ max_mem = RTE_MIN((uint64_t)RTE_MAX_MEM_MB_PER_LIST << 20, max_mem);
+
+ area_sz = RTE_MIN(page_sz * max_pages, max_mem);
+
+ /* make sure the list isn't smaller than the page size */
+ area_sz = RTE_MAX(area_sz, page_sz);
+
+ return RTE_ALIGN(area_sz, page_sz);
+}
+
+#define MEMSEG_LIST_FMT "memseg-%" PRIu64 "k-%i-%i"
+static int
+alloc_memseg_list(struct rte_memseg_list *msl, uint64_t page_sz,
+ int n_segs, int socket_id, int type_msl_idx)
+{
+ char name[RTE_FBARRAY_NAME_LEN];
+
+ snprintf(name, sizeof(name), MEMSEG_LIST_FMT, page_sz >> 10, socket_id,
+ type_msl_idx);
+ if (rte_fbarray_init(&msl->memseg_arr, name, n_segs,
+ sizeof(struct rte_memseg))) {
+ RTE_LOG(ERR, EAL, "Cannot allocate memseg list: %s\n",
+ rte_strerror(rte_errno));
+ return -1;
+ }
+
+ msl->page_sz = page_sz;
+ msl->socket_id = socket_id;
+ msl->base_va = NULL;
+
+ RTE_LOG(DEBUG, EAL, "Memseg list allocated: 0x%zxkB at socket %i\n",
+ (size_t)page_sz >> 10, socket_id);
+
+ return 0;
+}
+
+static int
+alloc_va_space(struct rte_memseg_list *msl)
+{
+ uint64_t page_sz;
+ size_t mem_sz;
+ void *addr;
+ int flags = 0;
+
+#ifdef RTE_ARCH_PPC_64
+ flags |= MAP_HUGETLB;
+#endif
+
+ page_sz = msl->page_sz;
+ mem_sz = page_sz * msl->memseg_arr.len;
+
+ addr = eal_get_virtual_area(msl->base_va, &mem_sz, page_sz, 0, flags);
+ if (addr == NULL) {
+ if (rte_errno == EADDRNOTAVAIL)
+ RTE_LOG(ERR, EAL, "Could not mmap %llu bytes at [%p] - please use '--base-virtaddr' option\n",
+ (unsigned long long)mem_sz, msl->base_va);
+ else
+ RTE_LOG(ERR, EAL, "Cannot reserve memory\n");
+ return -1;
+ }
+ msl->base_va = addr;
+
+ return 0;
+}
+
+
+static int
+memseg_primary_init(void)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ int hpi_idx, msl_idx = 0;
+ struct rte_memseg_list *msl;
+ uint64_t max_mem, total_mem;
+
+ /* no-huge does not need this at all */
+ if (internal_config.no_hugetlbfs)
+ return 0;
+
+ /* FreeBSD has an issue where core dump will dump the entire memory
+ * contents, including anonymous zero-page memory. Therefore, while we
+ * will be limiting total amount of memory to RTE_MAX_MEM_MB, we will
+ * also be further limiting total memory amount to whatever memory is
+ * available to us through contigmem driver (plus spacing blocks).
+ *
+ * so, at each stage, we will be checking how much memory we are
+ * preallocating, and adjust all the values accordingly.
+ */
+
+ max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
+ total_mem = 0;
+
+ /* create memseg lists */
+ for (hpi_idx = 0; hpi_idx < (int) internal_config.num_hugepage_sizes;
+ hpi_idx++) {
+ uint64_t max_type_mem, total_type_mem = 0;
+ uint64_t avail_mem;
+ int type_msl_idx, max_segs, avail_segs, total_segs = 0;
+ struct hugepage_info *hpi;
+ uint64_t hugepage_sz;
+
+ hpi = &internal_config.hugepage_info[hpi_idx];
+ hugepage_sz = hpi->hugepage_sz;
+
+ /* no NUMA support on FreeBSD */
+
+ /* check if we've already exceeded total memory amount */
+ if (total_mem >= max_mem)
+ break;
+
+ /* first, calculate theoretical limits according to config */
+ max_type_mem = RTE_MIN(max_mem - total_mem,
+ (uint64_t)RTE_MAX_MEM_MB_PER_TYPE << 20);
+ max_segs = RTE_MAX_MEMSEG_PER_TYPE;
+
+ /* now, limit all of that to whatever will actually be
+ * available to us, because without dynamic allocation support,
+ * all of that extra memory will be sitting there being useless
+ * and slowing down core dumps in case of a crash.
+ *
+ * we need (N*2)-1 segments because we cannot guarantee that
+ * each segment will be IOVA-contiguous with the previous one,
+ * so we will allocate more and put spaces inbetween segments
+ * that are non-contiguous.
+ */
+ avail_segs = (hpi->num_pages[0] * 2) - 1;
+ avail_mem = avail_segs * hugepage_sz;
+
+ max_type_mem = RTE_MIN(avail_mem, max_type_mem);
+ max_segs = RTE_MIN(avail_segs, max_segs);
+
+ type_msl_idx = 0;
+ while (total_type_mem < max_type_mem &&
+ total_segs < max_segs) {
+ uint64_t cur_max_mem, cur_mem;
+ unsigned int n_segs;
+
+ if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
+ RTE_LOG(ERR, EAL,
+ "No more space in memseg lists, please increase %s\n",
+ RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
+ return -1;
+ }
+
+ msl = &mcfg->memsegs[msl_idx++];
+
+ cur_max_mem = max_type_mem - total_type_mem;
+
+ cur_mem = get_mem_amount(hugepage_sz,
+ cur_max_mem);
+ n_segs = cur_mem / hugepage_sz;
+
+ if (alloc_memseg_list(msl, hugepage_sz, n_segs,
+ 0, type_msl_idx))
+ return -1;
+
+ total_segs += msl->memseg_arr.len;
+ total_type_mem = total_segs * hugepage_sz;
+ type_msl_idx++;
+
+ if (alloc_va_space(msl)) {
+ RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n");
+ return -1;
+ }
+ }
+ total_mem += total_type_mem;
+ }
+ return 0;
+}
+
+static int
+memseg_secondary_init(void)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ int msl_idx = 0;
+ struct rte_memseg_list *msl;
+
+ for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS; msl_idx++) {
+
+ msl = &mcfg->memsegs[msl_idx];
+
+ /* skip empty memseg lists */
+ if (msl->memseg_arr.len == 0)
+ continue;
+
+ if (rte_fbarray_attach(&msl->memseg_arr)) {
+ RTE_LOG(ERR, EAL, "Cannot attach to primary process memseg lists\n");
+ return -1;
+ }
+
+ /* preallocate VA space */
+ if (alloc_va_space(msl)) {
+ RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int
+rte_eal_memseg_init(void)
+{
+ return rte_eal_process_type() == RTE_PROC_PRIMARY ?
+ memseg_primary_init() :
+ memseg_secondary_init();
+}
@@ -153,382 +153,6 @@ eal_get_virtual_area(void *requested_addr, size_t *size,
return aligned_addr;
}
-static uint64_t
-get_mem_amount(uint64_t page_sz, uint64_t max_mem)
-{
- uint64_t area_sz, max_pages;
-
- /* limit to RTE_MAX_MEMSEG_PER_LIST pages or RTE_MAX_MEM_MB_PER_LIST */
- max_pages = RTE_MAX_MEMSEG_PER_LIST;
- max_mem = RTE_MIN((uint64_t)RTE_MAX_MEM_MB_PER_LIST << 20, max_mem);
-
- area_sz = RTE_MIN(page_sz * max_pages, max_mem);
-
- /* make sure the list isn't smaller than the page size */
- area_sz = RTE_MAX(area_sz, page_sz);
-
- return RTE_ALIGN(area_sz, page_sz);
-}
-
-static int
-free_memseg_list(struct rte_memseg_list *msl)
-{
- if (rte_fbarray_destroy(&msl->memseg_arr)) {
- RTE_LOG(ERR, EAL, "Cannot destroy memseg list\n");
- return -1;
- }
- memset(msl, 0, sizeof(*msl));
- return 0;
-}
-
-static int
-alloc_memseg_list(struct rte_memseg_list *msl, uint64_t page_sz,
- uint64_t max_mem, int socket_id, int type_msl_idx)
-{
- char name[RTE_FBARRAY_NAME_LEN];
- uint64_t mem_amount;
- int max_segs;
-
- mem_amount = get_mem_amount(page_sz, max_mem);
- max_segs = mem_amount / page_sz;
-
- snprintf(name, sizeof(name), MEMSEG_LIST_FMT, page_sz >> 10, socket_id,
- type_msl_idx);
- if (rte_fbarray_init(&msl->memseg_arr, name, max_segs,
- sizeof(struct rte_memseg))) {
- RTE_LOG(ERR, EAL, "Cannot allocate memseg list: %s\n",
- rte_strerror(rte_errno));
- return -1;
- }
-
- msl->page_sz = page_sz;
- msl->socket_id = socket_id;
- msl->base_va = NULL;
-
- RTE_LOG(DEBUG, EAL, "Memseg list allocated: 0x%zxkB at socket %i\n",
- (size_t)page_sz >> 10, socket_id);
-
- return 0;
-}
-
-static int
-alloc_va_space(struct rte_memseg_list *msl)
-{
- uint64_t page_sz;
- size_t mem_sz;
- void *addr;
- int flags = 0;
-
-#ifdef RTE_ARCH_PPC_64
- flags |= MAP_HUGETLB;
-#endif
-
- page_sz = msl->page_sz;
- mem_sz = page_sz * msl->memseg_arr.len;
-
- addr = eal_get_virtual_area(msl->base_va, &mem_sz, page_sz, 0, flags);
- if (addr == NULL) {
- if (rte_errno == EADDRNOTAVAIL)
- RTE_LOG(ERR, EAL, "Could not mmap %llu bytes at [%p] - please use '--base-virtaddr' option\n",
- (unsigned long long)mem_sz, msl->base_va);
- else
- RTE_LOG(ERR, EAL, "Cannot reserve memory\n");
- return -1;
- }
- msl->base_va = addr;
-
- return 0;
-}
-
-static int __rte_unused
-memseg_primary_init_32(void)
-{
- struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
- int active_sockets, hpi_idx, msl_idx = 0;
- unsigned int socket_id, i;
- struct rte_memseg_list *msl;
- uint64_t extra_mem_per_socket, total_extra_mem, total_requested_mem;
- uint64_t max_mem;
-
- /* no-huge does not need this at all */
- if (internal_config.no_hugetlbfs)
- return 0;
-
- /* this is a giant hack, but desperate times call for desperate
- * measures. in legacy 32-bit mode, we cannot preallocate VA space,
- * because having upwards of 2 gigabytes of VA space already mapped will
- * interfere with our ability to map and sort hugepages.
- *
- * therefore, in legacy 32-bit mode, we will be initializing memseg
- * lists much later - in eal_memory.c, right after we unmap all the
- * unneeded pages. this will not affect secondary processes, as those
- * should be able to mmap the space without (too many) problems.
- */
- if (internal_config.legacy_mem)
- return 0;
-
- /* 32-bit mode is a very special case. we cannot know in advance where
- * the user will want to allocate their memory, so we have to do some
- * heuristics.
- */
- active_sockets = 0;
- total_requested_mem = 0;
- if (internal_config.force_sockets)
- for (i = 0; i < rte_socket_count(); i++) {
- uint64_t mem;
-
- socket_id = rte_socket_id_by_idx(i);
- mem = internal_config.socket_mem[socket_id];
-
- if (mem == 0)
- continue;
-
- active_sockets++;
- total_requested_mem += mem;
- }
- else
- total_requested_mem = internal_config.memory;
-
- max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
- if (total_requested_mem > max_mem) {
- RTE_LOG(ERR, EAL, "Invalid parameters: 32-bit process can at most use %uM of memory\n",
- (unsigned int)(max_mem >> 20));
- return -1;
- }
- total_extra_mem = max_mem - total_requested_mem;
- extra_mem_per_socket = active_sockets == 0 ? total_extra_mem :
- total_extra_mem / active_sockets;
-
- /* the allocation logic is a little bit convoluted, but here's how it
- * works, in a nutshell:
- * - if user hasn't specified on which sockets to allocate memory via
- * --socket-mem, we allocate all of our memory on master core socket.
- * - if user has specified sockets to allocate memory on, there may be
- * some "unused" memory left (e.g. if user has specified --socket-mem
- * such that not all memory adds up to 2 gigabytes), so add it to all
- * sockets that are in use equally.
- *
- * page sizes are sorted by size in descending order, so we can safely
- * assume that we dispense with bigger page sizes first.
- */
-
- /* create memseg lists */
- for (i = 0; i < rte_socket_count(); i++) {
- int hp_sizes = (int) internal_config.num_hugepage_sizes;
- uint64_t max_socket_mem, cur_socket_mem;
- unsigned int master_lcore_socket;
- struct rte_config *cfg = rte_eal_get_configuration();
- bool skip;
-
- socket_id = rte_socket_id_by_idx(i);
-
-#ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
- if (socket_id > 0)
- break;
-#endif
-
- /* if we didn't specifically request memory on this socket */
- skip = active_sockets != 0 &&
- internal_config.socket_mem[socket_id] == 0;
- /* ...or if we didn't specifically request memory on *any*
- * socket, and this is not master lcore
- */
- master_lcore_socket = rte_lcore_to_socket_id(cfg->master_lcore);
- skip |= active_sockets == 0 && socket_id != master_lcore_socket;
-
- if (skip) {
- RTE_LOG(DEBUG, EAL, "Will not preallocate memory on socket %u\n",
- socket_id);
- continue;
- }
-
- /* max amount of memory on this socket */
- max_socket_mem = (active_sockets != 0 ?
- internal_config.socket_mem[socket_id] :
- internal_config.memory) +
- extra_mem_per_socket;
- cur_socket_mem = 0;
-
- for (hpi_idx = 0; hpi_idx < hp_sizes; hpi_idx++) {
- uint64_t max_pagesz_mem, cur_pagesz_mem = 0;
- uint64_t hugepage_sz;
- struct hugepage_info *hpi;
- int type_msl_idx, max_segs, total_segs = 0;
-
- hpi = &internal_config.hugepage_info[hpi_idx];
- hugepage_sz = hpi->hugepage_sz;
-
- /* check if pages are actually available */
- if (hpi->num_pages[socket_id] == 0)
- continue;
-
- max_segs = RTE_MAX_MEMSEG_PER_TYPE;
- max_pagesz_mem = max_socket_mem - cur_socket_mem;
-
- /* make it multiple of page size */
- max_pagesz_mem = RTE_ALIGN_FLOOR(max_pagesz_mem,
- hugepage_sz);
-
- RTE_LOG(DEBUG, EAL, "Attempting to preallocate "
- "%" PRIu64 "M on socket %i\n",
- max_pagesz_mem >> 20, socket_id);
-
- type_msl_idx = 0;
- while (cur_pagesz_mem < max_pagesz_mem &&
- total_segs < max_segs) {
- if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
- RTE_LOG(ERR, EAL,
- "No more space in memseg lists, please increase %s\n",
- RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
- return -1;
- }
-
- msl = &mcfg->memsegs[msl_idx];
-
- if (alloc_memseg_list(msl, hugepage_sz,
- max_pagesz_mem, socket_id,
- type_msl_idx)) {
- /* failing to allocate a memseg list is
- * a serious error.
- */
- RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n");
- return -1;
- }
-
- if (alloc_va_space(msl)) {
- /* if we couldn't allocate VA space, we
- * can try with smaller page sizes.
- */
- RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list, retrying with different page size\n");
- /* deallocate memseg list */
- if (free_memseg_list(msl))
- return -1;
- break;
- }
-
- total_segs += msl->memseg_arr.len;
- cur_pagesz_mem = total_segs * hugepage_sz;
- type_msl_idx++;
- msl_idx++;
- }
- cur_socket_mem += cur_pagesz_mem;
- }
- if (cur_socket_mem == 0) {
- RTE_LOG(ERR, EAL, "Cannot allocate VA space on socket %u\n",
- socket_id);
- return -1;
- }
- }
-
- return 0;
-}
-
-static int __rte_unused
-memseg_primary_init(void)
-{
- struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
- int i, socket_id, hpi_idx, msl_idx = 0;
- struct rte_memseg_list *msl;
- uint64_t max_mem, total_mem;
-
- /* no-huge does not need this at all */
- if (internal_config.no_hugetlbfs)
- return 0;
-
- max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
- total_mem = 0;
-
- /* create memseg lists */
- for (hpi_idx = 0; hpi_idx < (int) internal_config.num_hugepage_sizes;
- hpi_idx++) {
- struct hugepage_info *hpi;
- uint64_t hugepage_sz;
-
- hpi = &internal_config.hugepage_info[hpi_idx];
- hugepage_sz = hpi->hugepage_sz;
-
- for (i = 0; i < (int) rte_socket_count(); i++) {
- uint64_t max_type_mem, total_type_mem = 0;
- int type_msl_idx, max_segs, total_segs = 0;
-
- socket_id = rte_socket_id_by_idx(i);
-
-#ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
- if (socket_id > 0)
- break;
-#endif
-
- if (total_mem >= max_mem)
- break;
-
- max_type_mem = RTE_MIN(max_mem - total_mem,
- (uint64_t)RTE_MAX_MEM_MB_PER_TYPE << 20);
- max_segs = RTE_MAX_MEMSEG_PER_TYPE;
-
- type_msl_idx = 0;
- while (total_type_mem < max_type_mem &&
- total_segs < max_segs) {
- uint64_t cur_max_mem;
- if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
- RTE_LOG(ERR, EAL,
- "No more space in memseg lists, please increase %s\n",
- RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
- return -1;
- }
-
- msl = &mcfg->memsegs[msl_idx++];
-
- cur_max_mem = max_type_mem - total_type_mem;
- if (alloc_memseg_list(msl, hugepage_sz,
- cur_max_mem, socket_id,
- type_msl_idx))
- return -1;
-
- total_segs += msl->memseg_arr.len;
- total_type_mem = total_segs * hugepage_sz;
- type_msl_idx++;
-
- if (alloc_va_space(msl)) {
- RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n");
- return -1;
- }
- }
- total_mem += total_type_mem;
- }
- }
- return 0;
-}
-
-static int
-memseg_secondary_init(void)
-{
- struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
- int msl_idx = 0;
- struct rte_memseg_list *msl;
-
- for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS; msl_idx++) {
-
- msl = &mcfg->memsegs[msl_idx];
-
- /* skip empty memseg lists */
- if (msl->memseg_arr.len == 0)
- continue;
-
- if (rte_fbarray_attach(&msl->memseg_arr)) {
- RTE_LOG(ERR, EAL, "Cannot attach to primary process memseg lists\n");
- return -1;
- }
-
- /* preallocate VA space */
- if (alloc_va_space(msl)) {
- RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n");
- return -1;
- }
- }
-
- return 0;
-}
-
static struct rte_memseg *
virt2memseg(const void *addr, const struct rte_memseg_list *msl)
{
@@ -918,15 +542,7 @@ rte_eal_memory_init(void)
/* lock mem hotplug here, to prevent races while we init */
rte_rwlock_read_lock(&mcfg->memory_hotplug_lock);
- retval = rte_eal_process_type() == RTE_PROC_PRIMARY ?
-#ifndef RTE_ARCH_64
- memseg_primary_init_32() :
-#else
- memseg_primary_init() :
-#endif
- memseg_secondary_init();
-
- if (retval < 0)
+ if (rte_eal_memseg_init() < 0)
goto fail;
if (eal_memalloc_init() < 0)
@@ -46,6 +46,18 @@ void eal_log_set_default(FILE *default_log);
*/
int rte_eal_cpu_init(void);
+/**
+ * Create memseg lists
+ *
+ * This function is private to EAL.
+ *
+ * Preallocate virtual memory.
+ *
+ * @return
+ * 0 on success, negative on error
+ */
+int rte_eal_memseg_init(void);
+
/**
* Map memory
*
@@ -767,6 +767,34 @@ remap_segment(struct hugepage_file *hugepages, int seg_start, int seg_end)
return 0;
}
+static uint64_t
+get_mem_amount(uint64_t page_sz, uint64_t max_mem)
+{
+ uint64_t area_sz, max_pages;
+
+ /* limit to RTE_MAX_MEMSEG_PER_LIST pages or RTE_MAX_MEM_MB_PER_LIST */
+ max_pages = RTE_MAX_MEMSEG_PER_LIST;
+ max_mem = RTE_MIN((uint64_t)RTE_MAX_MEM_MB_PER_LIST << 20, max_mem);
+
+ area_sz = RTE_MIN(page_sz * max_pages, max_mem);
+
+ /* make sure the list isn't smaller than the page size */
+ area_sz = RTE_MAX(area_sz, page_sz);
+
+ return RTE_ALIGN(area_sz, page_sz);
+}
+
+static int
+free_memseg_list(struct rte_memseg_list *msl)
+{
+ if (rte_fbarray_destroy(&msl->memseg_arr)) {
+ RTE_LOG(ERR, EAL, "Cannot destroy memseg list\n");
+ return -1;
+ }
+ memset(msl, 0, sizeof(*msl));
+ return 0;
+}
+
#define MEMSEG_LIST_FMT "memseg-%" PRIu64 "k-%i-%i"
static int
alloc_memseg_list(struct rte_memseg_list *msl, uint64_t page_sz,
@@ -1840,3 +1868,316 @@ rte_eal_using_phys_addrs(void)
{
return phys_addrs_available;
}
+
+static int __rte_unused
+memseg_primary_init_32(void)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ int active_sockets, hpi_idx, msl_idx = 0;
+ unsigned int socket_id, i;
+ struct rte_memseg_list *msl;
+ uint64_t extra_mem_per_socket, total_extra_mem, total_requested_mem;
+ uint64_t max_mem;
+
+ /* no-huge does not need this at all */
+ if (internal_config.no_hugetlbfs)
+ return 0;
+
+ /* this is a giant hack, but desperate times call for desperate
+ * measures. in legacy 32-bit mode, we cannot preallocate VA space,
+ * because having upwards of 2 gigabytes of VA space already mapped will
+ * interfere with our ability to map and sort hugepages.
+ *
+ * therefore, in legacy 32-bit mode, we will be initializing memseg
+ * lists much later - in eal_memory.c, right after we unmap all the
+ * unneeded pages. this will not affect secondary processes, as those
+ * should be able to mmap the space without (too many) problems.
+ */
+ if (internal_config.legacy_mem)
+ return 0;
+
+ /* 32-bit mode is a very special case. we cannot know in advance where
+ * the user will want to allocate their memory, so we have to do some
+ * heuristics.
+ */
+ active_sockets = 0;
+ total_requested_mem = 0;
+ if (internal_config.force_sockets)
+ for (i = 0; i < rte_socket_count(); i++) {
+ uint64_t mem;
+
+ socket_id = rte_socket_id_by_idx(i);
+ mem = internal_config.socket_mem[socket_id];
+
+ if (mem == 0)
+ continue;
+
+ active_sockets++;
+ total_requested_mem += mem;
+ }
+ else
+ total_requested_mem = internal_config.memory;
+
+ max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
+ if (total_requested_mem > max_mem) {
+ RTE_LOG(ERR, EAL, "Invalid parameters: 32-bit process can at most use %uM of memory\n",
+ (unsigned int)(max_mem >> 20));
+ return -1;
+ }
+ total_extra_mem = max_mem - total_requested_mem;
+ extra_mem_per_socket = active_sockets == 0 ? total_extra_mem :
+ total_extra_mem / active_sockets;
+
+ /* the allocation logic is a little bit convoluted, but here's how it
+ * works, in a nutshell:
+ * - if user hasn't specified on which sockets to allocate memory via
+ * --socket-mem, we allocate all of our memory on master core socket.
+ * - if user has specified sockets to allocate memory on, there may be
+ * some "unused" memory left (e.g. if user has specified --socket-mem
+ * such that not all memory adds up to 2 gigabytes), so add it to all
+ * sockets that are in use equally.
+ *
+ * page sizes are sorted by size in descending order, so we can safely
+ * assume that we dispense with bigger page sizes first.
+ */
+
+ /* create memseg lists */
+ for (i = 0; i < rte_socket_count(); i++) {
+ int hp_sizes = (int) internal_config.num_hugepage_sizes;
+ uint64_t max_socket_mem, cur_socket_mem;
+ unsigned int master_lcore_socket;
+ struct rte_config *cfg = rte_eal_get_configuration();
+ bool skip;
+
+ socket_id = rte_socket_id_by_idx(i);
+
+#ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
+ if (socket_id > 0)
+ break;
+#endif
+
+ /* if we didn't specifically request memory on this socket */
+ skip = active_sockets != 0 &&
+ internal_config.socket_mem[socket_id] == 0;
+ /* ...or if we didn't specifically request memory on *any*
+ * socket, and this is not master lcore
+ */
+ master_lcore_socket = rte_lcore_to_socket_id(cfg->master_lcore);
+ skip |= active_sockets == 0 && socket_id != master_lcore_socket;
+
+ if (skip) {
+ RTE_LOG(DEBUG, EAL, "Will not preallocate memory on socket %u\n",
+ socket_id);
+ continue;
+ }
+
+ /* max amount of memory on this socket */
+ max_socket_mem = (active_sockets != 0 ?
+ internal_config.socket_mem[socket_id] :
+ internal_config.memory) +
+ extra_mem_per_socket;
+ cur_socket_mem = 0;
+
+ for (hpi_idx = 0; hpi_idx < hp_sizes; hpi_idx++) {
+ uint64_t max_pagesz_mem, cur_pagesz_mem = 0;
+ uint64_t hugepage_sz;
+ struct hugepage_info *hpi;
+ int type_msl_idx, max_segs, total_segs = 0;
+
+ hpi = &internal_config.hugepage_info[hpi_idx];
+ hugepage_sz = hpi->hugepage_sz;
+
+ /* check if pages are actually available */
+ if (hpi->num_pages[socket_id] == 0)
+ continue;
+
+ max_segs = RTE_MAX_MEMSEG_PER_TYPE;
+ max_pagesz_mem = max_socket_mem - cur_socket_mem;
+
+ /* make it multiple of page size */
+ max_pagesz_mem = RTE_ALIGN_FLOOR(max_pagesz_mem,
+ hugepage_sz);
+
+ RTE_LOG(DEBUG, EAL, "Attempting to preallocate "
+ "%" PRIu64 "M on socket %i\n",
+ max_pagesz_mem >> 20, socket_id);
+
+ type_msl_idx = 0;
+ while (cur_pagesz_mem < max_pagesz_mem &&
+ total_segs < max_segs) {
+ uint64_t cur_mem;
+ unsigned int n_segs;
+
+ if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
+ RTE_LOG(ERR, EAL,
+ "No more space in memseg lists, please increase %s\n",
+ RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
+ return -1;
+ }
+
+ msl = &mcfg->memsegs[msl_idx];
+
+ cur_mem = get_mem_amount(hugepage_sz,
+ max_pagesz_mem);
+ n_segs = cur_mem / hugepage_sz;
+
+ if (alloc_memseg_list(msl, hugepage_sz, n_segs,
+ socket_id, type_msl_idx)) {
+ /* failing to allocate a memseg list is
+ * a serious error.
+ */
+ RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n");
+ return -1;
+ }
+
+ if (alloc_va_space(msl)) {
+ /* if we couldn't allocate VA space, we
+ * can try with smaller page sizes.
+ */
+ RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list, retrying with different page size\n");
+ /* deallocate memseg list */
+ if (free_memseg_list(msl))
+ return -1;
+ break;
+ }
+
+ total_segs += msl->memseg_arr.len;
+ cur_pagesz_mem = total_segs * hugepage_sz;
+ type_msl_idx++;
+ msl_idx++;
+ }
+ cur_socket_mem += cur_pagesz_mem;
+ }
+ if (cur_socket_mem == 0) {
+ RTE_LOG(ERR, EAL, "Cannot allocate VA space on socket %u\n",
+ socket_id);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int __rte_unused
+memseg_primary_init(void)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ int i, socket_id, hpi_idx, msl_idx = 0;
+ struct rte_memseg_list *msl;
+ uint64_t max_mem, total_mem;
+
+ /* no-huge does not need this at all */
+ if (internal_config.no_hugetlbfs)
+ return 0;
+
+ max_mem = (uint64_t)RTE_MAX_MEM_MB << 20;
+ total_mem = 0;
+
+ /* create memseg lists */
+ for (hpi_idx = 0; hpi_idx < (int) internal_config.num_hugepage_sizes;
+ hpi_idx++) {
+ struct hugepage_info *hpi;
+ uint64_t hugepage_sz;
+
+ hpi = &internal_config.hugepage_info[hpi_idx];
+ hugepage_sz = hpi->hugepage_sz;
+
+ for (i = 0; i < (int) rte_socket_count(); i++) {
+ uint64_t max_type_mem, total_type_mem = 0;
+ int type_msl_idx, max_segs, total_segs = 0;
+
+ socket_id = rte_socket_id_by_idx(i);
+
+#ifndef RTE_EAL_NUMA_AWARE_HUGEPAGES
+ if (socket_id > 0)
+ break;
+#endif
+
+ if (total_mem >= max_mem)
+ break;
+
+ max_type_mem = RTE_MIN(max_mem - total_mem,
+ (uint64_t)RTE_MAX_MEM_MB_PER_TYPE << 20);
+ max_segs = RTE_MAX_MEMSEG_PER_TYPE;
+
+ type_msl_idx = 0;
+ while (total_type_mem < max_type_mem &&
+ total_segs < max_segs) {
+ uint64_t cur_max_mem, cur_mem;
+ unsigned int n_segs;
+
+ if (msl_idx >= RTE_MAX_MEMSEG_LISTS) {
+ RTE_LOG(ERR, EAL,
+ "No more space in memseg lists, please increase %s\n",
+ RTE_STR(CONFIG_RTE_MAX_MEMSEG_LISTS));
+ return -1;
+ }
+
+ msl = &mcfg->memsegs[msl_idx++];
+
+ cur_max_mem = max_type_mem - total_type_mem;
+
+ cur_mem = get_mem_amount(hugepage_sz,
+ cur_max_mem);
+ n_segs = cur_mem / hugepage_sz;
+
+ if (alloc_memseg_list(msl, hugepage_sz, n_segs,
+ socket_id, type_msl_idx))
+ return -1;
+
+ total_segs += msl->memseg_arr.len;
+ total_type_mem = total_segs * hugepage_sz;
+ type_msl_idx++;
+
+ if (alloc_va_space(msl)) {
+ RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n");
+ return -1;
+ }
+ }
+ total_mem += total_type_mem;
+ }
+ }
+ return 0;
+}
+
+static int
+memseg_secondary_init(void)
+{
+ struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
+ int msl_idx = 0;
+ struct rte_memseg_list *msl;
+
+ for (msl_idx = 0; msl_idx < RTE_MAX_MEMSEG_LISTS; msl_idx++) {
+
+ msl = &mcfg->memsegs[msl_idx];
+
+ /* skip empty memseg lists */
+ if (msl->memseg_arr.len == 0)
+ continue;
+
+ if (rte_fbarray_attach(&msl->memseg_arr)) {
+ RTE_LOG(ERR, EAL, "Cannot attach to primary process memseg lists\n");
+ return -1;
+ }
+
+ /* preallocate VA space */
+ if (alloc_va_space(msl)) {
+ RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+int
+rte_eal_memseg_init(void)
+{
+ return rte_eal_process_type() == RTE_PROC_PRIMARY ?
+#ifndef RTE_ARCH_64
+ memseg_primary_init_32() :
+#else
+ memseg_primary_init() :
+#endif
+ memseg_secondary_init();
+}