diff options
Diffstat (limited to 'src/vppinfra')
| -rw-r--r-- | src/vppinfra/CMakeLists.txt | 3 | ||||
| -rw-r--r-- | src/vppinfra/linux/syscall.h | 6 | ||||
| -rw-r--r-- | src/vppinfra/pmalloc.c | 562 | ||||
| -rw-r--r-- | src/vppinfra/pmalloc.h | 131 | ||||
| -rw-r--r-- | src/vppinfra/test_pmalloc.c | 169 |
5 files changed, 871 insertions, 0 deletions
diff --git a/src/vppinfra/CMakeLists.txt b/src/vppinfra/CMakeLists.txt index 26368493382..6e1a4fd861a 100644 --- a/src/vppinfra/CMakeLists.txt +++ b/src/vppinfra/CMakeLists.txt @@ -56,6 +56,7 @@ set(VPPINFRA_SRCS macros.c maplog.c mhash.c + pmalloc.c pool.c ptclosure.c random.c @@ -135,6 +136,7 @@ set(VPPINFRA_HEADERS mheap.h os.h pipeline.h + pmalloc.h pool.h pmc.h ptclosure.h @@ -227,6 +229,7 @@ if(VPP_BUILD_VPPINFRA_TESTS) longjmp macros maplog + pmalloc pool_iterate ptclosure random diff --git a/src/vppinfra/linux/syscall.h b/src/vppinfra/linux/syscall.h index 4511b85ac1d..1ae029d5802 100644 --- a/src/vppinfra/linux/syscall.h +++ b/src/vppinfra/linux/syscall.h @@ -19,6 +19,12 @@ #include <unistd.h> #include <sys/syscall.h> +static inline int +getcpu (unsigned *cpu, unsigned *node, void *tcache) +{ + return syscall (__NR_getcpu, cpu, node, tcache); +} + static inline long set_mempolicy (int mode, const unsigned long *nodemask, unsigned long maxnode) { diff --git a/src/vppinfra/pmalloc.c b/src/vppinfra/pmalloc.c new file mode 100644 index 00000000000..d354cce8a7d --- /dev/null +++ b/src/vppinfra/pmalloc.c @@ -0,0 +1,562 @@ +/* + * Copyright (c) 2018 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define _GNU_SOURCE +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <linux/mempolicy.h> +#include <linux/memfd.h> + +#include <vppinfra/format.h> +#include <vppinfra/linux/syscall.h> +#include <vppinfra/linux/sysfs.h> +#include <vppinfra/mem.h> +#include <vppinfra/hash.h> +#include <vppinfra/pmalloc.h> + +#if __SIZEOF_POINTER__ >= 8 +#define DEFAULT_RESERVED_MB 16384 +#else +#define DEFAULT_RESERVED_MB 256 +#endif + +static inline clib_pmalloc_chunk_t * +get_chunk (clib_pmalloc_page_t * pp, u32 index) +{ + return pool_elt_at_index (pp->chunks, index); +} + +static inline int +pmalloc_validate_numa_node (u32 * numa_node) +{ + if (*numa_node == CLIB_PMALLOC_NUMA_LOCAL) + { + u32 cpu; + if (getcpu (&cpu, numa_node, 0) != 0) + return 1; + } + return 0; +} + +int +clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size) +{ + struct stat st; + uword off, pagesize; + int fd; + + ASSERT (pm->error == 0); + + pm->log2_page_sz = 21; + pm->error = clib_mem_create_hugetlb_fd ("detect_hugepage_size", &fd); + + if (pm->error) + return -1; + + if (fd != -1) + { + if (fstat (fd, &st) == -1) + pm->log2_page_sz = min_log2 (st.st_blksize); + close (fd); + } + + pagesize = 1ULL << pm->log2_page_sz; + + size = size ? size : ((u64) DEFAULT_RESERVED_MB) << 20; + size = round_pow2 (size, pagesize); + + pm->max_pages = size >> pm->log2_page_sz; + + /* reserve VA space for future growth */ + pm->base = mmap (0, size + pagesize, PROT_NONE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (pm->base == MAP_FAILED) + { + pm->error = clib_error_return_unix (0, "failed to reserve %u pages"); + return -1; + } + + off = round_pow2 (pointer_to_uword (pm->base), pagesize) - + pointer_to_uword (pm->base); + + /* trim start and end of reservation to be page aligned */ + if (off) + { + munmap (pm->base, off); + pm->base += off; + } + + munmap (pm->base + (pm->max_pages * pagesize), pagesize - off); + return 0; +} + +static inline void * +alloc_chunk_from_page (clib_pmalloc_main_t * pm, clib_pmalloc_page_t * pp, + u32 n_blocks, u32 block_align, u32 numa_node) +{ + clib_pmalloc_chunk_t *c; + void *va; + u32 off; + u32 alloc_chunk_index; + + if (pp->chunks == 0) + { + pool_get (pp->chunks, c); + pp->n_free_chunks = 1; + pp->first_chunk_index = c - pp->chunks; + c->prev = c->next = ~0; + c->size = pp->n_free_blocks; + } + + alloc_chunk_index = pp->first_chunk_index; + +next_chunk: + c = pool_elt_at_index (pp->chunks, alloc_chunk_index); + off = (block_align - (c->start & (block_align - 1))) & (block_align - 1); + + if (c->used || n_blocks + off > c->size) + { + if (c->next == ~0) + return 0; + alloc_chunk_index = c->next; + goto next_chunk; + } + + /* if alignment is needed create new empty chunk */ + if (off) + { + u32 offset_chunk_index; + clib_pmalloc_chunk_t *co; + pool_get (pp->chunks, c); + pp->n_free_chunks++; + offset_chunk_index = alloc_chunk_index; + alloc_chunk_index = c - pp->chunks; + + co = pool_elt_at_index (pp->chunks, offset_chunk_index); + c->size = co->size - off; + c->next = co->next; + c->start = co->start + off; + c->prev = offset_chunk_index; + co->size = off; + co->next = alloc_chunk_index; + } + + c->used = 1; + if (c->size > n_blocks) + { + u32 tail_chunk_index; + clib_pmalloc_chunk_t *ct; + pool_get (pp->chunks, ct); + pp->n_free_chunks++; + tail_chunk_index = ct - pp->chunks; + c = pool_elt_at_index (pp->chunks, alloc_chunk_index); + ct->size = c->size - n_blocks; + ct->next = c->next; + ct->prev = alloc_chunk_index; + ct->start = c->start + n_blocks; + + c->size = n_blocks; + c->next = tail_chunk_index; + if (ct->next != ~0) + pool_elt_at_index (pp->chunks, ct->next)->prev = tail_chunk_index; + } + else if (c->next != ~0) + pool_elt_at_index (pp->chunks, c->next)->prev = alloc_chunk_index; + + c = get_chunk (pp, alloc_chunk_index); + va = pm->base + ((pp - pm->pages) << pm->log2_page_sz) + + (c->start << PMALLOC_LOG2_BLOCK_SZ); + hash_set (pm->chunk_index_by_va, pointer_to_uword (va), alloc_chunk_index); + pp->n_free_blocks -= n_blocks; + pp->n_free_chunks--; + return va; +} + +static inline clib_pmalloc_page_t * +pmalloc_map_pages (clib_pmalloc_main_t * pm, clib_pmalloc_arena_t * a, + u32 numa_node, u32 n_pages) +{ + clib_pmalloc_page_t *pp = 0; + u64 seek, pa, sys_page_size; + int pagemap_fd, status, rv, i, mmap_flags; + void *va; + int old_mpol = -1; + long unsigned int mask[16] = { 0 }; + long unsigned int old_mask[16] = { 0 }; + + clib_error_free (pm->error); + + if (pm->max_pages <= vec_len (pm->pages)) + { + pm->error = clib_error_return (0, "maximum number of pages reached"); + return 0; + } + + pm->error = clib_sysfs_prealloc_hugepages (numa_node, pm->log2_page_sz, + n_pages); + + if (pm->error) + return 0; + + rv = get_mempolicy (&old_mpol, old_mask, sizeof (old_mask) * 8 + 1, 0, 0); + /* failure to get mempolicy means we can only proceed with numa 0 maps */ + if (rv == -1 && numa_node != 0) + { + pm->error = clib_error_return_unix (0, "failed to get mempolicy"); + return 0; + } + + mask[0] = 1 << numa_node; + rv = set_mempolicy (MPOL_BIND, mask, sizeof (mask) * 8 + 1); + if (rv == -1 && numa_node != 0) + { + pm->error = clib_error_return_unix (0, "failed to set mempolicy for " + "numa node %u", numa_node); + return 0; + } + + mmap_flags = MAP_FIXED | MAP_HUGETLB | MAP_LOCKED | MAP_ANONYMOUS; + if (a->flags & CLIB_PMALLOC_ARENA_F_SHARED_MEM) + { + mmap_flags |= MAP_SHARED; + pm->error = clib_mem_create_hugetlb_fd ((char *) a->name, &a->fd); + if (a->fd == -1) + goto error; + } + else + { + mmap_flags |= MAP_PRIVATE; + a->fd = -1; + } + + va = pm->base + (vec_len (pm->pages) << pm->log2_page_sz); + if (mmap (va, n_pages << pm->log2_page_sz, PROT_READ | PROT_WRITE, + mmap_flags, a->fd, 0) == MAP_FAILED) + { + pm->error = clib_error_return_unix (0, "failed to mmap %u pages at %p " + "fd %d numa %d flags 0x%x", n_pages, + va, a->fd, numa_node, mmap_flags); + goto error; + } + + rv = set_mempolicy (old_mpol, old_mask, sizeof (old_mask) * 8 + 1); + if (rv == -1 && numa_node != 0) + { + pm->error = clib_error_return_unix (0, "failed to restore mempolicy"); + goto error; + } + + /* we tolerate move_pages failure only if request os for numa node 0 + to support non-numa kernels */ + rv = move_pages (0, 1, &va, 0, &status, 0); + if ((rv == 0 && status != numa_node) || (rv != 0 && numa_node != 0)) + { + pm->error = rv == -1 ? + clib_error_return_unix (0, "page allocated on wrong node, numa node " + "%u status %d", numa_node, status) : + clib_error_return (0, "page allocated on wrong node, numa node " + "%u status %d", numa_node, status); + + /* unmap & reesrve */ + munmap (va, n_pages << pm->log2_page_sz); + mmap (va, n_pages << pm->log2_page_sz, PROT_NONE, + MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + goto error; + } + + memset (va, 0, n_pages << pm->log2_page_sz); + sys_page_size = sysconf (_SC_PAGESIZE); + pagemap_fd = open ((char *) "/proc/self/pagemap", O_RDONLY); + + for (i = 0; i < n_pages; i++) + { + uword page_va = pointer_to_uword ((u8 *) va + (i << pm->log2_page_sz)); + vec_add2 (pm->pages, pp, 1); + pp->n_free_blocks = 1 << (pm->log2_page_sz - PMALLOC_LOG2_BLOCK_SZ); + pp->index = pp - pm->pages; + pp->arena_index = a->index; + + vec_add1 (a->page_indices, pp->index); + a->n_pages++; + + seek = (page_va / sys_page_size) * sizeof (pa); + if (pagemap_fd != -1 && + lseek (pagemap_fd, seek, SEEK_SET) == seek && + read (pagemap_fd, &pa, sizeof (pa)) == (sizeof (pa)) && + pa & (1ULL << 63) /* page present bit */ ) + { + pp->pa = (pa & pow2_mask (55)) * sys_page_size; + } + vec_add1_aligned (pm->va_pa_diffs, pp->pa ? page_va - pp->pa : 0, + CLIB_CACHE_LINE_BYTES); + } + + if (pagemap_fd != -1) + close (pagemap_fd); + + /* return pointer to 1st page */ + return pp - (n_pages - 1); + +error: + if (a->fd != -1) + close (a->fd); + return 0; +} + +void * +clib_pmalloc_create_shared_arena (clib_pmalloc_main_t * pm, char *name, + uword size, u32 numa_node) +{ + clib_pmalloc_arena_t *a; + clib_pmalloc_page_t *pp; + u32 n_pages = round_pow2 (size, 1 << pm->log2_page_sz) >> pm->log2_page_sz; + + if (n_pages + vec_len (pm->pages) > pm->max_pages) + return 0; + + if (pmalloc_validate_numa_node (&numa_node)) + return 0; + + pool_get (pm->arenas, a); + a->index = a - pm->arenas; + a->name = format (0, "%s%c", name, 0); + a->numa_node = numa_node; + a->flags = CLIB_PMALLOC_ARENA_F_SHARED_MEM; + a->log2_page_sz = pm->log2_page_sz; + + if ((pp = pmalloc_map_pages (pm, a, numa_node, n_pages)) == 0) + { + vec_free (a->name); + memset (a, 0, sizeof (*a)); + pool_put (pm->arenas, a); + return 0; + } + + return pm->base + (pp->index << pm->log2_page_sz); +} + +static inline void * +clib_pmalloc_alloc_inline (clib_pmalloc_main_t * pm, clib_pmalloc_arena_t * a, + uword size, uword align, u32 numa_node) +{ + clib_pmalloc_page_t *pp; + u32 n_blocks, block_align, *page_index; + + ASSERT (is_pow2 (align)); + + if (pmalloc_validate_numa_node (&numa_node)) + return 0; + + if (a == 0) + { + vec_validate_init_empty (pm->default_arena_for_numa_node, + numa_node, ~0); + if (pm->default_arena_for_numa_node[numa_node] == ~0) + { + pool_get (pm->arenas, a); + pm->default_arena_for_numa_node[numa_node] = a - pm->arenas; + a->name = format (0, "default-numa-%u%c", numa_node, 0); + a->numa_node = numa_node; + } + else + a = pool_elt_at_index (pm->arenas, + pm->default_arena_for_numa_node[numa_node]); + } + + n_blocks = round_pow2 (size, PMALLOC_BLOCK_SZ) / PMALLOC_BLOCK_SZ; + block_align = align >> PMALLOC_LOG2_BLOCK_SZ; + + vec_foreach (page_index, a->page_indices) + { + pp = vec_elt_at_index (pm->pages, *page_index); + void *rv = alloc_chunk_from_page (pm, pp, n_blocks, block_align, + numa_node); + + if (rv) + return rv; + } + + if ((a->flags & CLIB_PMALLOC_ARENA_F_SHARED_MEM) == 0 && + (pp = pmalloc_map_pages (pm, a, numa_node, 1))) + return alloc_chunk_from_page (pm, pp, n_blocks, block_align, numa_node); + + return 0; +} + +void * +clib_pmalloc_alloc_aligned_on_numa (clib_pmalloc_main_t * pm, uword size, + uword align, u32 numa_node) +{ + return clib_pmalloc_alloc_inline (pm, 0, size, align, numa_node); +} + +void * +clib_pmalloc_alloc_aligned (clib_pmalloc_main_t * pm, uword size, uword align) +{ + return clib_pmalloc_alloc_inline (pm, 0, size, align, + CLIB_PMALLOC_NUMA_LOCAL); +} + +void * +clib_pmalloc_alloc_from_arena (clib_pmalloc_main_t * pm, void *arena_va, + uword size, uword align) +{ + clib_pmalloc_arena_t *a = clib_pmalloc_get_arena (pm, arena_va); + return clib_pmalloc_alloc_inline (pm, a, size, align, 0); +} + +void +clib_pmalloc_free (clib_pmalloc_main_t * pm, void *va) +{ + clib_pmalloc_page_t *pp; + clib_pmalloc_chunk_t *c; + uword *p; + u32 chunk_index, page_index; + + p = hash_get (pm->chunk_index_by_va, pointer_to_uword (va)); + + if (p == 0) + os_panic (); + + chunk_index = p[0]; + page_index = clib_pmalloc_get_page_index (pm, va); + hash_unset (pm->chunk_index_by_va, pointer_to_uword (va)); + + pp = vec_elt_at_index (pm->pages, page_index); + c = pool_elt_at_index (pp->chunks, chunk_index); + c->used = 0; + pp->n_free_blocks += c->size; + pp->n_free_chunks++; + + /* merge with next if free */ + if (c->next != ~0 && get_chunk (pp, c->next)->used == 0) + { + clib_pmalloc_chunk_t *next = get_chunk (pp, c->next); + c->size += next->size; + c->next = next->next; + if (next->next != ~0) + get_chunk (pp, next->next)->prev = chunk_index; + memset (next, 0, sizeof (*next)); + pool_put (pp->chunks, next); + pp->n_free_chunks--; + } + + /* merge with prev if free */ + if (c->prev != ~0 && get_chunk (pp, c->prev)->used == 0) + { + clib_pmalloc_chunk_t *prev = get_chunk (pp, c->prev); + prev->size += c->size; + prev->next = c->next; + if (c->next != ~0) + get_chunk (pp, c->next)->prev = c->prev; + memset (c, 0, sizeof (*c)); + pool_put (pp->chunks, c); + pp->n_free_chunks--; + } +} + +static u8 * +format_pmalloc_page (u8 * s, va_list * va) +{ + clib_pmalloc_page_t *pp = va_arg (*va, clib_pmalloc_page_t *); + int verbose = va_arg (*va, int); + u32 indent = format_get_indent (s); + + s = format (s, "page %u: phys-addr %p ", pp->index, pp->pa); + + if (pp->chunks == 0) + return s; + + s = format (s, "free %u chunks %u free-chunks %d ", + (pp->n_free_blocks) << PMALLOC_LOG2_BLOCK_SZ, + pool_elts (pp->chunks), pp->n_free_chunks); + + if (verbose >= 2) + { + clib_pmalloc_chunk_t *c; + c = pool_elt_at_index (pp->chunks, pp->first_chunk_index); + s = format (s, "\n%U%12s%12s%8s%8s%8s%8s", + format_white_space, indent + 2, + "chunk offset", "size", "used", "index", "prev", "next"); + while (1) + { + s = format (s, "\n%U%12u%12u%8s%8d%8d%8d", + format_white_space, indent + 2, + c->start << PMALLOC_LOG2_BLOCK_SZ, + c->size << PMALLOC_LOG2_BLOCK_SZ, + c->used ? "yes" : "no", + c - pp->chunks, c->prev, c->next); + if (c->next == ~0) + break; + c = pool_elt_at_index (pp->chunks, c->next); + } + } + return s; +} + +u8 * +format_pmalloc (u8 * s, va_list * va) +{ + clib_pmalloc_main_t *pm = va_arg (*va, clib_pmalloc_main_t *); + int verbose = va_arg (*va, int); + u32 indent = format_get_indent (s); + + clib_pmalloc_page_t *pp; + clib_pmalloc_arena_t *a; + + s = format (s, "used-pages %u reserved-pages %u pagesize %uKB", + vec_len (pm->pages), pm->max_pages, + 1 << (pm->log2_page_sz - 10)); + + if (verbose >= 2) + s = format (s, " va-start %p", pm->base); + + if (pm->error) + s = format (s, "\n%Ulast-error: %U", format_white_space, indent + 2, + format_clib_error, pm->error); + + + /* *INDENT-OFF* */ + pool_foreach (a, pm->arenas, + { + u32 *page_index; + s = format (s, "\n%Uarena '%s' pages %u numa-node %u", + format_white_space, indent + 2, + a->name, vec_len (a->page_indices), a->numa_node); + if (a->fd != -1) + s = format (s, " shared fd %d", a->fd); + if (verbose >= 1) + vec_foreach (page_index, a->page_indices) + { + pp = vec_elt_at_index (pm->pages, *page_index); + s = format (s, "\n%U%U", format_white_space, indent + 4, + format_pmalloc_page, pp, verbose); + } + }); + /* *INDENT-ON* */ + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/pmalloc.h b/src/vppinfra/pmalloc.h new file mode 100644 index 00000000000..4d9906ab6e7 --- /dev/null +++ b/src/vppinfra/pmalloc.h @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2018 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef included_palloc_h +#define included_palloc_h +#include <vppinfra/format.h> +#include <vppinfra/pool.h> + +#define PMALLOC_LOG2_BLOCK_SZ CLIB_LOG2_CACHE_LINE_BYTES +#define PMALLOC_BLOCK_SZ (1 << 6) + +#define CLIB_PMALLOC_NUMA_LOCAL 0xffffffff + +typedef struct +{ + u32 start, prev, next; + u32 size:31; + u32 used:1; +} clib_pmalloc_chunk_t; + +STATIC_ASSERT_SIZEOF (clib_pmalloc_chunk_t, 16); + +typedef struct +{ + u32 index; + u32 arena_index; + uword pa; + clib_pmalloc_chunk_t *chunks; + u32 first_chunk_index; + u32 n_free_chunks; + u32 n_free_blocks; +} clib_pmalloc_page_t; + +typedef struct +{ + u32 index; + u32 flags; +#define CLIB_PMALLOC_ARENA_F_SHARED_MEM (1 << 0) + int fd; + u32 numa_node; + u32 first_page_index; + u32 log2_page_sz; + u32 n_pages; + u8 *name; + u32 *page_indices; +} clib_pmalloc_arena_t; + +typedef struct +{ + u8 *base; + uword log2_page_sz; + uword *va_pa_diffs; + u32 max_pages; + clib_pmalloc_page_t *pages; + uword *chunk_index_by_va; + clib_pmalloc_arena_t *arenas; + u32 *default_arena_for_numa_node; + + clib_error_t *error; +} clib_pmalloc_main_t; + + +int clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size); +void *clib_pmalloc_alloc_aligned_on_numa (clib_pmalloc_main_t * pm, + uword size, uword align, + u32 numa_node); +void *clib_pmalloc_alloc_aligned (clib_pmalloc_main_t * pm, uword size, + uword align); +void clib_pmalloc_free (clib_pmalloc_main_t * pm, void *va); + +void *clib_pmalloc_create_shared_arena (clib_pmalloc_main_t * pm, char *name, + uword size, u32 numa_node); + +void *clib_pmalloc_alloc_from_arena (clib_pmalloc_main_t * pm, void *arena_va, + uword size, uword align); + +format_function_t format_pmalloc; + +always_inline clib_error_t * +clib_pmalloc_last_error (clib_pmalloc_main_t * pm) +{ + return pm->error; +} + +always_inline u32 +clib_pmalloc_get_page_index (clib_pmalloc_main_t * pm, void *va) +{ + uword index = (pointer_to_uword (va) - pointer_to_uword (pm->base)) >> + pm->log2_page_sz; + + ASSERT (index < vec_len (pm->pages)); + + return index; +} + +always_inline clib_pmalloc_arena_t * +clib_pmalloc_get_arena (clib_pmalloc_main_t * pm, void *va) +{ + u32 index = clib_pmalloc_get_page_index (pm, va); + return pm->arenas + pm->pages[index].arena_index; +} + +always_inline uword +clib_pmalloc_get_pa (clib_pmalloc_main_t * pm, void *va) +{ + u32 index = clib_pmalloc_get_page_index (pm, va); + return pointer_to_uword (va) - pm->va_pa_diffs[index]; +} + + +#endif /* included_palloc_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vppinfra/test_pmalloc.c b/src/vppinfra/test_pmalloc.c new file mode 100644 index 00000000000..c9ae01fc936 --- /dev/null +++ b/src/vppinfra/test_pmalloc.c @@ -0,0 +1,169 @@ +/* + * Copyright (c) 2018 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vppinfra/format.h> +#include <vppinfra/pmalloc.h> +#include <vppinfra/random.h> + +typedef struct +{ + uword baseva; + uword size; + uword *vas; + u32 nitems; + u32 item_size; + u32 align; + int max_numa; + u32 arena_pages; + u32 arena_numa; + u32 arena_items; + int verbose; + clib_pmalloc_main_t pmalloc_main; +} test_main_t; + +test_main_t test_main; + +clib_error_t * +test_palloc (test_main_t * tm) +{ + clib_pmalloc_main_t *pm = &tm->pmalloc_main; + void *arena; + int i; + uword *va; + + if (clib_pmalloc_init (pm, 0) != 0) + return clib_error_return (0, "pmalloc init failure"); + + fformat (stdout, "Allocate %d items...\n", tm->nitems); + + for (i = 0; i < tm->nitems; i++) + { + u32 size = tm->item_size ? tm->item_size : 64 + 64 * (i % 8); + u32 align = tm->align ? tm->align : 64 << (i % 5); + u32 numa = i % (tm->max_numa + 1); + va = clib_pmalloc_alloc_aligned_on_numa (pm, size, align, numa); + + if (va == 0) + clib_error ("Failed to alloc %u byte chunk with align %u on numa %u," + "\nerror: %U", size, align, numa, format_clib_error, + clib_pmalloc_last_error (pm)); + + if ((pointer_to_uword (va) & (align - 1)) != 0) + clib_error (0, "Alignment error: %p not aligned with %u", va, align); + + vec_add1 (tm->vas, pointer_to_uword (va)); + } + fformat (stdout, "%U\n", format_pmalloc, pm, tm->verbose); + + /* alloc from arena */ + if (tm->arena_items) + { + fformat (stdout, "Allocate %d items from arena ...\n", tm->arena_items); + arena = clib_pmalloc_create_shared_arena (pm, "test arena", + tm->arena_pages << 21, + tm->arena_numa); + if (arena == 0) + clib_error ("Failed to alloc shared arena: %U", format_clib_error, + clib_pmalloc_last_error (pm)); + + for (i = 0; i < tm->arena_items; i++) + { + u32 size = tm->item_size ? tm->item_size : 64 + 64 * (i % 8); + u32 align = tm->align ? tm->align : 64 << (i % 5); + va = clib_pmalloc_alloc_from_arena (pm, arena, size, align); + vec_add1 (tm->vas, pointer_to_uword (va)); + } + fformat (stdout, "\n%U\n", format_pmalloc, pm, tm->verbose); + } + + + fformat (stdout, "Freeing %d items ...\n", vec_len (tm->vas)); + for (i = 0; i < vec_len (tm->vas); i++) + clib_pmalloc_free (pm, (void *) tm->vas[i]); + + fformat (stdout, "\n%U\n", format_pmalloc, pm, tm->verbose); + return 0; +} + +clib_error_t * +test_palloc_main (unformat_input_t * i) +{ + test_main_t *tm = &test_main; + clib_error_t *error; + + tm->nitems = 5; + tm->arena_pages = 2; + tm->arena_numa = CLIB_PMALLOC_NUMA_LOCAL; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "nitems %u", &tm->nitems)) + ; + else if (unformat (i, "max-numa %u", &tm->max_numa)) + ; + else if (unformat (i, "item-size %u", &tm->item_size)) + ; + else if (unformat (i, "align %u", &tm->align)) + ; + else if (unformat (i, "verbose %d", &tm->verbose)) + ; + else if (unformat (i, "arena-pages %u", &tm->arena_pages)) + ; + else if (unformat (i, "arena-numa %u", &tm->arena_numa)) + ; + else if (unformat (i, "arena-items %u", &tm->arena_items)) + ; + else if (unformat (i, "verbose")) + tm->verbose = 1; + else + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, i); + } + + error = test_palloc (tm); + + return error; +} + +#ifdef CLIB_UNIX +int +main (int argc, char *argv[]) +{ + unformat_input_t i; + int rv = 0; + clib_error_t *error; + + clib_mem_init (0, 3ULL << 30); + + unformat_init_command_line (&i, argv); + error = test_palloc_main (&i); + if (error) + { + clib_error_report (error); + rv = 1; + } + unformat_free (&i); + + return rv; +} +#endif /* CLIB_UNIX */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |