diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vppinfra/pmalloc.c | 32 | ||||
| -rw-r--r-- | src/vppinfra/pmalloc.h | 4 |
2 files changed, 30 insertions, 6 deletions
diff --git a/src/vppinfra/pmalloc.c b/src/vppinfra/pmalloc.c index 5812f9fa120..98e3369bbca 100644 --- a/src/vppinfra/pmalloc.c +++ b/src/vppinfra/pmalloc.c @@ -62,6 +62,7 @@ int clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size) { uword off, pagesize; + u64 *pt = 0; ASSERT (pm->error == 0); @@ -70,6 +71,11 @@ clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size) pm->sys_log2_page_sz = min_log2 (sysconf (_SC_PAGESIZE)); pm->lookup_log2_page_sz = pm->def_log2_page_sz; + /* check if pagemap is accessible */ + pt = clib_mem_vm_get_paddr (&pt, pm->sys_log2_page_sz, 1); + if (pt == 0 || pt[0] == 0) + pm->flags |= CLIB_PMALLOC_F_NO_PAGEMAP; + size = size ? size : ((u64) DEFAULT_RESERVED_MB) << 20; size = round_pow2 (size, pagesize); @@ -206,9 +212,19 @@ pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count) vec_validate_aligned (pm->lookup_table, vec_len (pm->pages) * elts_per_page - 1, CLIB_CACHE_LINE_BYTES); - fd = open ((char *) "/proc/self/pagemap", O_RDONLY); - p = first * elts_per_page; + if (pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP) + { + while (p < elts_per_page * count) + { + pm->lookup_table[p] = pointer_to_uword (pm->base) + + (p << pm->lookup_log2_page_sz); + p++; + } + return; + } + + fd = open ((char *) "/proc/self/pagemap", O_RDONLY); while (p < elts_per_page * count) { va = pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz); @@ -273,10 +289,13 @@ pmalloc_map_pages (clib_pmalloc_main_t * pm, clib_pmalloc_arena_t * a, return 0; } - mmap_flags = MAP_FIXED | MAP_ANONYMOUS | MAP_LOCKED; + mmap_flags = MAP_FIXED | MAP_ANONYMOUS; + + if ((pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP) == 0) + mmap_flags |= MAP_LOCKED; if (a->log2_subpage_sz != pm->sys_log2_page_sz) - mmap_flags |= MAP_HUGETLB; + mmap_flags |= MAP_HUGETLB | MAP_LOCKED; if (a->flags & CLIB_PMALLOC_ARENA_F_SHARED_MEM) { @@ -628,9 +647,10 @@ format_pmalloc (u8 * s, va_list * va) clib_pmalloc_arena_t *a; s = format (s, "used-pages %u reserved-pages %u default-page-size %U " - "lookup-page-size %U", vec_len (pm->pages), pm->max_pages, + "lookup-page-size %U%s", vec_len (pm->pages), pm->max_pages, format_log2_page_size, pm->def_log2_page_sz, - format_log2_page_size, pm->lookup_log2_page_sz); + format_log2_page_size, pm->lookup_log2_page_sz, + pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP ? " no-pagemap" : ""); if (verbose >= 2) diff --git a/src/vppinfra/pmalloc.h b/src/vppinfra/pmalloc.h index 41b85e0c517..9cd652971a6 100644 --- a/src/vppinfra/pmalloc.h +++ b/src/vppinfra/pmalloc.h @@ -60,6 +60,10 @@ typedef struct typedef struct { + /* flags */ + u32 flags; +#define CLIB_PMALLOC_F_NO_PAGEMAP (1 << 0) + /* base VA address */ u8 *base; |