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[37.110.65.23]) by smtp.gmail.com with ESMTPSA id j12sm5051733ljg.15.2020.06.10.07.27.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jun 2020 07:27:52 -0700 (PDT) From: Dmitry Kozlyuk To: dev@dpdk.org Cc: Dmitry Malloy , Narcisa Ana Maria Vasile , Fady Bader , Tal Shnaiderman , Dmitry Kozlyuk , Anatoly Burakov , Bruce Richardson Date: Wed, 10 Jun 2020 17:27:23 +0300 Message-Id: <20200610142730.31376-5-dmitry.kozliuk@gmail.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200610142730.31376-1-dmitry.kozliuk@gmail.com> References: <20200608074153.29611-1-dmitry.kozliuk@gmail.com> <20200610142730.31376-1-dmitry.kozliuk@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v8 04/11] eal/mem: extract common code for memseg list initialization X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" All supported OS create memory segment lists (MSL) and reserve VA space for them in a nearly identical way. Move common code into EAL private functions to reduce duplication. Signed-off-by: Dmitry Kozlyuk --- lib/librte_eal/common/eal_common_memory.c | 95 +++++++++++++++++ lib/librte_eal/common/eal_private.h | 62 +++++++++++ lib/librte_eal/freebsd/eal_memory.c | 94 ++++------------- lib/librte_eal/linux/eal_memory.c | 119 +++++----------------- 4 files changed, 203 insertions(+), 167 deletions(-) diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c index f9fbd3e4e..76cf87c1f 100644 --- a/lib/librte_eal/common/eal_common_memory.c +++ b/lib/librte_eal/common/eal_common_memory.c @@ -25,6 +25,7 @@ #include "eal_private.h" #include "eal_internal_cfg.h" #include "eal_memcfg.h" +#include "eal_options.h" #include "malloc_heap.h" /* @@ -182,6 +183,100 @@ eal_get_virtual_area(void *requested_addr, size_t *size, return aligned_addr; } +int +eal_memseg_list_init_named(struct rte_memseg_list *msl, const char *name, + uint64_t page_sz, int n_segs, int socket_id, bool heap) +{ + 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; + msl->heap = heap; + + RTE_LOG(DEBUG, EAL, + "Memseg list allocated at socket %i, page size 0x%zxkB\n", + socket_id, (size_t)page_sz >> 10); + + return 0; +} + +int +eal_memseg_list_init(struct rte_memseg_list *msl, uint64_t page_sz, + int n_segs, int socket_id, int type_msl_idx, bool heap) +{ + char name[RTE_FBARRAY_NAME_LEN]; + + snprintf(name, sizeof(name), MEMSEG_LIST_FMT, page_sz >> 10, socket_id, + type_msl_idx); + + return eal_memseg_list_init_named( + msl, name, page_sz, n_segs, socket_id, heap); +} + +int +eal_memseg_list_alloc(struct rte_memseg_list *msl, int reserve_flags) +{ + size_t page_sz, mem_sz; + void *addr; + + 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, reserve_flags); + if (addr == NULL) { +#ifndef RTE_EXEC_ENV_WINDOWS + /* The hint would be misleading on Windows, but this function + * is called from many places, including common code, + * so don't duplicate the message. + */ + if (rte_errno == EADDRNOTAVAIL) + RTE_LOG(ERR, EAL, "Cannot reserve %llu bytes at [%p] - " + "please use '--" OPT_BASE_VIRTADDR "' option\n", + (unsigned long long)mem_sz, msl->base_va); +#endif + return -1; + } + msl->base_va = addr; + msl->len = mem_sz; + + RTE_LOG(DEBUG, EAL, "VA reserved for memseg list at %p, size %zx\n", + addr, mem_sz); + + return 0; +} + +void +eal_memseg_list_populate(struct rte_memseg_list *msl, void *addr, int n_segs) +{ + size_t page_sz = msl->page_sz; + int i; + + for (i = 0; i < n_segs; i++) { + struct rte_fbarray *arr = &msl->memseg_arr; + struct rte_memseg *ms = rte_fbarray_get(arr, i); + + if (rte_eal_iova_mode() == RTE_IOVA_VA) + ms->iova = (uintptr_t)addr; + else + ms->iova = RTE_BAD_IOVA; + ms->addr = addr; + ms->hugepage_sz = page_sz; + ms->socket_id = 0; + ms->len = page_sz; + + rte_fbarray_set_used(arr, i); + + addr = RTE_PTR_ADD(addr, page_sz); + } +} + static struct rte_memseg * virt2memseg(const void *addr, const struct rte_memseg_list *msl) { diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h index 3173f1d67..1ec51b2eb 100644 --- a/lib/librte_eal/common/eal_private.h +++ b/lib/librte_eal/common/eal_private.h @@ -254,6 +254,68 @@ void * eal_get_virtual_area(void *requested_addr, size_t *size, size_t page_sz, int flags, int reserve_flags); +/** + * Initialize a memory segment list and create its backing storage. + * + * @param msl + * Memory segment list to be filled. + * @param name + * Name for the backing storage. + * @param page_sz + * Size of segment pages in the MSL. + * @param n_segs + * Number of segments. + * @param socket_id + * Socket ID. Must not be SOCKET_ID_ANY. + * @param heap + * Mark MSL as pointing to a heap. + * @return + * 0 on success, (-1) on failure and rte_errno is set. + */ +int +eal_memseg_list_init_named(struct rte_memseg_list *msl, const char *name, + uint64_t page_sz, int n_segs, int socket_id, bool heap); + +/** + * Initialize memory segment list and create its backing storage + * with a name corresponding to MSL parameters. + * + * @param type_msl_idx + * Index of the MSL among other MSLs of the same socket and page size. + * + * @see eal_memseg_list_init_named for remaining parameters description. + */ +int +eal_memseg_list_init(struct rte_memseg_list *msl, uint64_t page_sz, + int n_segs, int socket_id, int type_msl_idx, bool heap); + +/** + * Reserve VA space for a memory segment list + * previously initialized with eal_memseg_list_init(). + * + * @param msl + * Initialized memory segment list with page size defined. + * @param reserve_flags + * Extra memory reservation flags. Can be 0 if unnecessary. + * @return + * 0 on success, (-1) on failure and rte_errno is set. + */ +int +eal_memseg_list_alloc(struct rte_memseg_list *msl, int reserve_flags); + +/** + * Populate MSL, each segment is one page long. + * + * @param msl + * Initialized memory segment list with page size defined. + * @param addr + * Starting address of list segments. + * @param n_segs + * Number of segments to populate. + */ +void +eal_memseg_list_populate(struct rte_memseg_list *msl, void *addr, int n_segs); + /** * Get cpu core_id. * diff --git a/lib/librte_eal/freebsd/eal_memory.c b/lib/librte_eal/freebsd/eal_memory.c index 5bc2da160..29c3ed5a9 100644 --- a/lib/librte_eal/freebsd/eal_memory.c +++ b/lib/librte_eal/freebsd/eal_memory.c @@ -66,53 +66,34 @@ rte_eal_hugepage_init(void) struct rte_memseg_list *msl; struct rte_fbarray *arr; struct rte_memseg *ms; - uint64_t page_sz; + uint64_t mem_sz, page_sz; int n_segs, cur_seg; /* create a memseg list */ msl = &mcfg->memsegs[0]; + mem_sz = internal_config.memory; page_sz = RTE_PGSIZE_4K; - n_segs = internal_config.memory / page_sz; + n_segs = mem_sz / page_sz; - if (rte_fbarray_init(&msl->memseg_arr, "nohugemem", n_segs, - sizeof(struct rte_memseg))) { - RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n"); + if (eal_memseg_list_init_named( + msl, "nohugemem", page_sz, n_segs, 0, true)) { return -1; } - addr = mmap(NULL, internal_config.memory, - PROT_READ | PROT_WRITE, + addr = mmap(NULL, mem_sz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (addr == MAP_FAILED) { RTE_LOG(ERR, EAL, "%s: mmap() failed: %s\n", __func__, strerror(errno)); return -1; } - msl->base_va = addr; - msl->page_sz = page_sz; - msl->len = internal_config.memory; - msl->socket_id = 0; - msl->heap = 1; - - /* populate memsegs. each memseg is 1 page long */ - for (cur_seg = 0; cur_seg < n_segs; cur_seg++) { - arr = &msl->memseg_arr; - ms = rte_fbarray_get(arr, cur_seg); - if (rte_eal_iova_mode() == RTE_IOVA_VA) - ms->iova = (uintptr_t)addr; - else - ms->iova = RTE_BAD_IOVA; - ms->addr = addr; - ms->hugepage_sz = page_sz; - ms->len = page_sz; - ms->socket_id = 0; + msl->base_va = addr; + msl->len = mem_sz; - rte_fbarray_set_used(arr, cur_seg); + eal_memseg_list_populate(msl, addr, n_segs); - addr = RTE_PTR_ADD(addr, page_sz); - } return 0; } @@ -336,64 +317,25 @@ get_mem_amount(uint64_t page_sz, uint64_t max_mem) 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, +memseg_list_init(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; + return eal_memseg_list_init( + msl, page_sz, n_segs, socket_id, type_msl_idx, false); } static int -alloc_va_space(struct rte_memseg_list *msl) +memseg_list_alloc(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; + flags |= EAL_RESERVE_HUGEPAGES; #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 '--" OPT_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; - msl->len = mem_sz; - - return 0; + return eal_memseg_list_alloc(msl, flags); } - static int memseg_primary_init(void) { @@ -479,7 +421,7 @@ memseg_primary_init(void) cur_max_mem); n_segs = cur_mem / hugepage_sz; - if (alloc_memseg_list(msl, hugepage_sz, n_segs, + if (memseg_list_init(msl, hugepage_sz, n_segs, 0, type_msl_idx)) return -1; @@ -487,7 +429,7 @@ memseg_primary_init(void) total_type_mem = total_segs * hugepage_sz; type_msl_idx++; - if (alloc_va_space(msl)) { + if (memseg_list_alloc(msl)) { RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n"); return -1; } @@ -518,7 +460,7 @@ memseg_secondary_init(void) } /* preallocate VA space */ - if (alloc_va_space(msl)) { + if (memseg_list_alloc(msl)) { RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n"); return -1; } diff --git a/lib/librte_eal/linux/eal_memory.c b/lib/librte_eal/linux/eal_memory.c index 7a9c97ff8..d9de30e8b 100644 --- a/lib/librte_eal/linux/eal_memory.c +++ b/lib/librte_eal/linux/eal_memory.c @@ -802,7 +802,7 @@ get_mem_amount(uint64_t page_sz, uint64_t max_mem) } static int -free_memseg_list(struct rte_memseg_list *msl) +memseg_list_free(struct rte_memseg_list *msl) { if (rte_fbarray_destroy(&msl->memseg_arr)) { RTE_LOG(ERR, EAL, "Cannot destroy memseg list\n"); @@ -812,58 +812,18 @@ free_memseg_list(struct rte_memseg_list *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, +memseg_list_init(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; - msl->heap = 1; /* mark it as a heap segment */ - - RTE_LOG(DEBUG, EAL, "Memseg list allocated: 0x%zxkB at socket %i\n", - (size_t)page_sz >> 10, socket_id); - - return 0; + return eal_memseg_list_init( + msl, page_sz, n_segs, socket_id, type_msl_idx, true); } static int -alloc_va_space(struct rte_memseg_list *msl) +memseg_list_alloc(struct rte_memseg_list *msl) { - uint64_t page_sz; - size_t mem_sz; - void *addr; - int flags = 0; - - 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 '--" OPT_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; - msl->len = mem_sz; - - return 0; + return eal_memseg_list_alloc(msl, 0); } /* @@ -1009,13 +969,17 @@ prealloc_segments(struct hugepage_file *hugepages, int n_pages) } /* now, allocate fbarray itself */ - if (alloc_memseg_list(msl, page_sz, n_segs, socket, + if (memseg_list_init(msl, page_sz, n_segs, socket, msl_idx) < 0) return -1; /* finally, allocate VA space */ - if (alloc_va_space(msl) < 0) + if (memseg_list_alloc(msl) < 0) { + RTE_LOG(ERR, EAL, + "Cannot preallocate %zukB hugepages\n", + page_sz >> 10); return -1; + } } } return 0; @@ -1323,8 +1287,6 @@ eal_legacy_hugepage_init(void) struct rte_mem_config *mcfg; struct hugepage_file *hugepage = NULL, *tmp_hp = NULL; struct hugepage_info used_hp[MAX_HUGEPAGE_SIZES]; - struct rte_fbarray *arr; - struct rte_memseg *ms; uint64_t memory[RTE_MAX_NUMA_NODES]; @@ -1343,7 +1305,7 @@ eal_legacy_hugepage_init(void) void *prealloc_addr; size_t mem_sz; struct rte_memseg_list *msl; - int n_segs, cur_seg, fd, flags; + int n_segs, fd, flags; #ifdef MEMFD_SUPPORTED int memfd; #endif @@ -1358,12 +1320,12 @@ eal_legacy_hugepage_init(void) /* create a memseg list */ msl = &mcfg->memsegs[0]; + mem_sz = internal_config.memory; page_sz = RTE_PGSIZE_4K; - n_segs = internal_config.memory / page_sz; + n_segs = mem_sz / page_sz; - if (rte_fbarray_init(&msl->memseg_arr, "nohugemem", n_segs, - sizeof(struct rte_memseg))) { - RTE_LOG(ERR, EAL, "Cannot allocate memseg list\n"); + if (eal_memseg_list_init_named( + msl, "nohugemem", page_sz, n_segs, 0, true)) { return -1; } @@ -1400,16 +1362,12 @@ eal_legacy_hugepage_init(void) /* preallocate address space for the memory, so that it can be * fit into the DMA mask. */ - mem_sz = internal_config.memory; - prealloc_addr = eal_get_virtual_area( - NULL, &mem_sz, page_sz, 0, 0); - if (prealloc_addr == NULL) { - RTE_LOG(ERR, EAL, - "%s: reserving memory area failed: " - "%s\n", - __func__, strerror(errno)); + if (eal_memseg_list_alloc(msl, 0)) { + RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n"); return -1; } + + prealloc_addr = msl->base_va; addr = mmap(prealloc_addr, mem_sz, PROT_READ | PROT_WRITE, flags | MAP_FIXED, fd, 0); if (addr == MAP_FAILED || addr != prealloc_addr) { @@ -1418,11 +1376,6 @@ eal_legacy_hugepage_init(void) munmap(prealloc_addr, mem_sz); return -1; } - msl->base_va = addr; - msl->page_sz = page_sz; - msl->socket_id = 0; - msl->len = mem_sz; - msl->heap = 1; /* we're in single-file segments mode, so only the segment list * fd needs to be set up. @@ -1434,24 +1387,8 @@ eal_legacy_hugepage_init(void) } } - /* populate memsegs. each memseg is one page long */ - for (cur_seg = 0; cur_seg < n_segs; cur_seg++) { - arr = &msl->memseg_arr; + eal_memseg_list_populate(msl, addr, n_segs); - ms = rte_fbarray_get(arr, cur_seg); - if (rte_eal_iova_mode() == RTE_IOVA_VA) - ms->iova = (uintptr_t)addr; - else - ms->iova = RTE_BAD_IOVA; - ms->addr = addr; - ms->hugepage_sz = page_sz; - ms->socket_id = 0; - ms->len = page_sz; - - rte_fbarray_set_used(arr, cur_seg); - - addr = RTE_PTR_ADD(addr, (size_t)page_sz); - } if (mcfg->dma_maskbits && rte_mem_check_dma_mask_thread_unsafe(mcfg->dma_maskbits)) { RTE_LOG(ERR, EAL, @@ -2191,7 +2128,7 @@ memseg_primary_init_32(void) max_pagesz_mem); n_segs = cur_mem / hugepage_sz; - if (alloc_memseg_list(msl, hugepage_sz, n_segs, + if (memseg_list_init(msl, hugepage_sz, n_segs, socket_id, type_msl_idx)) { /* failing to allocate a memseg list is * a serious error. @@ -2200,13 +2137,13 @@ memseg_primary_init_32(void) return -1; } - if (alloc_va_space(msl)) { + if (memseg_list_alloc(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)) + if (memseg_list_free(msl)) return -1; break; } @@ -2395,11 +2332,11 @@ memseg_primary_init(void) } msl = &mcfg->memsegs[msl_idx++]; - if (alloc_memseg_list(msl, pagesz, n_segs, + if (memseg_list_init(msl, pagesz, n_segs, socket_id, cur_seglist)) goto out; - if (alloc_va_space(msl)) { + if (memseg_list_alloc(msl)) { RTE_LOG(ERR, EAL, "Cannot allocate VA space for memseg list\n"); goto out; } @@ -2433,7 +2370,7 @@ memseg_secondary_init(void) } /* preallocate VA space */ - if (alloc_va_space(msl)) { + if (memseg_list_alloc(msl)) { RTE_LOG(ERR, EAL, "Cannot preallocate VA space for hugepage memory\n"); return -1; } -- 2.25.4