diff options
Diffstat (limited to 'lib/librte_eal/linuxapp/eal/eal_memory.c')
| -rw-r--r-- | lib/librte_eal/linuxapp/eal/eal_memory.c | 176 |
1 files changed, 123 insertions, 53 deletions
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c index ebe06833..52791282 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memory.c +++ b/lib/librte_eal/linuxapp/eal/eal_memory.c @@ -2,6 +2,7 @@ * BSD LICENSE * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * Copyright(c) 2013 6WIND. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -30,36 +31,6 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* BSD LICENSE - * - * Copyright(c) 2013 6WIND. - * - * 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 - * 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 - * distribution. - * * Neither the name of 6WIND S.A. 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 - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ #define _FILE_OFFSET_BITS 64 #include <errno.h> @@ -70,7 +41,6 @@ #include <stdint.h> #include <inttypes.h> #include <string.h> -#include <stdarg.h> #include <sys/mman.h> #include <sys/types.h> #include <sys/stat.h> @@ -78,11 +48,14 @@ #include <sys/file.h> #include <unistd.h> #include <limits.h> -#include <errno.h> #include <sys/ioctl.h> #include <sys/time.h> #include <signal.h> #include <setjmp.h> +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES +#include <numa.h> +#include <numaif.h> +#endif #include <rte_log.h> #include <rte_memory.h> @@ -137,6 +110,13 @@ test_phys_addrs_available(void) if (rte_xen_dom0_supported()) return; + if (!rte_eal_has_hugepages()) { + RTE_LOG(ERR, EAL, + "Started without hugepages support, physical addresses not available\n"); + phys_addrs_available = false; + return; + } + physaddr = rte_mem_virt2phy(&tmp); if (physaddr == RTE_BAD_PHYS_ADDR) { RTE_LOG(ERR, EAL, @@ -147,16 +127,6 @@ test_phys_addrs_available(void) } } -/* Lock page in physical memory and prevent from swapping. */ -int -rte_mem_lock_page(const void *virt) -{ - unsigned long virtual = (unsigned long)virt; - int page_size = getpagesize(); - unsigned long aligned = (virtual & ~ (page_size - 1)); - return mlock((void*)aligned, page_size); -} - /* * Get physical address of any mapped virtual address in the current process. */ @@ -387,6 +357,14 @@ static int huge_wrap_sigsetjmp(void) return sigsetjmp(huge_jmpenv, 1); } +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES +/* Callback for numa library. */ +void numa_error(char *where) +{ + RTE_LOG(ERR, EAL, "%s failed: %s\n", where, strerror(errno)); +} +#endif + /* * Mmap all hugepages of hugepage table: it first open a file in * hugetlbfs, then mmap() hugepage_sz data in it. If orig is set, the @@ -395,18 +373,78 @@ static int huge_wrap_sigsetjmp(void) * map continguous physical blocks in contiguous virtual blocks. */ static unsigned -map_all_hugepages(struct hugepage_file *hugepg_tbl, - struct hugepage_info *hpi, int orig) +map_all_hugepages(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi, + uint64_t *essential_memory __rte_unused, int orig) { int fd; unsigned i; void *virtaddr; void *vma_addr = NULL; size_t vma_len = 0; +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES + int node_id = -1; + int essential_prev = 0; + int oldpolicy; + struct bitmask *oldmask = numa_allocate_nodemask(); + bool have_numa = true; + unsigned long maxnode = 0; + + /* Check if kernel supports NUMA. */ + if (numa_available() != 0) { + RTE_LOG(DEBUG, EAL, "NUMA is not supported.\n"); + have_numa = false; + } + + if (orig && have_numa) { + RTE_LOG(DEBUG, EAL, "Trying to obtain current memory policy.\n"); + if (get_mempolicy(&oldpolicy, oldmask->maskp, + oldmask->size + 1, 0, 0) < 0) { + RTE_LOG(ERR, EAL, + "Failed to get current mempolicy: %s. " + "Assuming MPOL_DEFAULT.\n", strerror(errno)); + oldpolicy = MPOL_DEFAULT; + } + for (i = 0; i < RTE_MAX_NUMA_NODES; i++) + if (internal_config.socket_mem[i]) + maxnode = i + 1; + } +#endif for (i = 0; i < hpi->num_pages[0]; i++) { uint64_t hugepage_sz = hpi->hugepage_sz; +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES + if (maxnode) { + unsigned int j; + + for (j = 0; j < maxnode; j++) + if (essential_memory[j]) + break; + + if (j == maxnode) { + node_id = (node_id + 1) % maxnode; + while (!internal_config.socket_mem[node_id]) { + node_id++; + node_id %= maxnode; + } + essential_prev = 0; + } else { + node_id = j; + essential_prev = essential_memory[j]; + + if (essential_memory[j] < hugepage_sz) + essential_memory[j] = 0; + else + essential_memory[j] -= hugepage_sz; + } + + RTE_LOG(DEBUG, EAL, + "Setting policy MPOL_PREFERRED for socket %d\n", + node_id); + numa_set_preferred(node_id); + } +#endif + if (orig) { hugepg_tbl[i].file_id = i; hugepg_tbl[i].size = hugepage_sz; @@ -461,7 +499,7 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl, if (fd < 0) { RTE_LOG(DEBUG, EAL, "%s(): open failed: %s\n", __func__, strerror(errno)); - return i; + goto out; } /* map the segment, and populate page tables, @@ -472,7 +510,7 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl, RTE_LOG(DEBUG, EAL, "%s(): mmap failed: %s\n", __func__, strerror(errno)); close(fd); - return i; + goto out; } if (orig) { @@ -497,7 +535,12 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl, munmap(virtaddr, hugepage_sz); close(fd); unlink(hugepg_tbl[i].filepath); - return i; +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES + if (maxnode) + essential_memory[node_id] = + essential_prev; +#endif + goto out; } *(int *)virtaddr = 0; } @@ -508,7 +551,7 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl, RTE_LOG(DEBUG, EAL, "%s(): Locking file failed:%s \n", __func__, strerror(errno)); close(fd); - return i; + goto out; } close(fd); @@ -517,6 +560,22 @@ map_all_hugepages(struct hugepage_file *hugepg_tbl, vma_len -= hugepage_sz; } +out: +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES + if (maxnode) { + RTE_LOG(DEBUG, EAL, + "Restoring previous memory policy: %d\n", oldpolicy); + if (oldpolicy == MPOL_DEFAULT) { + numa_set_localalloc(); + } else if (set_mempolicy(oldpolicy, oldmask->maskp, + oldmask->size + 1) < 0) { + RTE_LOG(ERR, EAL, "Failed to restore mempolicy: %s\n", + strerror(errno)); + numa_set_localalloc(); + } + } + numa_free_cpumask(oldmask); +#endif return i; } @@ -551,8 +610,8 @@ find_numasocket(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi) f = fopen("/proc/self/numa_maps", "r"); if (f == NULL) { - RTE_LOG(NOTICE, EAL, "cannot open /proc/self/numa_maps," - " consider that all memory is in socket_id 0\n"); + RTE_LOG(NOTICE, EAL, "NUMA support not available" + " consider that all memory is in socket_id 0\n"); return 0; } @@ -601,6 +660,11 @@ find_numasocket(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi) if (hugepg_tbl[i].orig_va == va) { hugepg_tbl[i].socket_id = socket_id; hp_count++; +#ifdef RTE_EAL_NUMA_AWARE_HUGEPAGES + RTE_LOG(DEBUG, EAL, + "Hugepage %s is on socket %d\n", + hugepg_tbl[i].filepath, socket_id); +#endif } } } @@ -995,7 +1059,7 @@ rte_eal_hugepage_init(void) strerror(errno)); return -1; } - mcfg->memseg[0].phys_addr = (phys_addr_t)(uintptr_t)addr; + mcfg->memseg[0].phys_addr = RTE_BAD_PHYS_ADDR; mcfg->memseg[0].addr = addr; mcfg->memseg[0].hugepage_sz = RTE_PGSIZE_4K; mcfg->memseg[0].len = internal_config.memory; @@ -1039,6 +1103,11 @@ rte_eal_hugepage_init(void) huge_register_sigbus(); + /* make a copy of socket_mem, needed for balanced allocation. */ + for (i = 0; i < RTE_MAX_NUMA_NODES; i++) + memory[i] = internal_config.socket_mem[i]; + + /* map all hugepages and sort them */ for (i = 0; i < (int)internal_config.num_hugepage_sizes; i ++){ unsigned pages_old, pages_new; @@ -1056,7 +1125,8 @@ rte_eal_hugepage_init(void) /* map all hugepages available */ pages_old = hpi->num_pages[0]; - pages_new = map_all_hugepages(&tmp_hp[hp_offset], hpi, 1); + pages_new = map_all_hugepages(&tmp_hp[hp_offset], hpi, + memory, 1); if (pages_new < pages_old) { RTE_LOG(DEBUG, EAL, "%d not %d hugepages of size %u MB allocated\n", @@ -1099,7 +1169,7 @@ rte_eal_hugepage_init(void) sizeof(struct hugepage_file), cmp_physaddr); /* remap all hugepages */ - if (map_all_hugepages(&tmp_hp[hp_offset], hpi, 0) != + if (map_all_hugepages(&tmp_hp[hp_offset], hpi, NULL, 0) != hpi->num_pages[0]) { RTE_LOG(ERR, EAL, "Failed to remap %u MB pages\n", (unsigned)(hpi->hugepage_sz / 0x100000)); |