diff options
| author |   Tom Jones <thj@freebsd.org> | 2024-02-02 14:25:24 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@0xa5.net> | 2024-04-24 14:40:59 +0000 |
| commit | 97188d71dd952e60e3603b0331c8a73aacfd233f (patch) | |
| tree | 40311a0af8076c801d9cd32124ff2d125efca857 | |
| parent | a0fd523013289c24c65f30ccd1bc9e4b39f81feb (diff) | |
vppinfra: Add FreeBSD method for updating pmalloc lookup table
FreeBSD has a different interface to request memory mapping information.
Add a FreeBSD specific method for reading physical addresses and make it
available at build time.
Type: improvement
Change-Id: I3588dde8e0a6f6d53333040245341ed09cebef9d
Signed-off-by: Tom Jones <thj@freebsd.org>
| -rw-r--r-- | src/vppinfra/pmalloc.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/src/vppinfra/pmalloc.c b/src/vppinfra/pmalloc.c index 2a27379b573..85b9db9d56c 100644 --- a/src/vppinfra/pmalloc.c +++ b/src/vppinfra/pmalloc.c @@ -17,6 +17,9 @@ #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> +#ifdef __FreeBSD__ +#include <sys/memrange.h> +#endif /* __FreeBSD__ */ #include <fcntl.h> #include <unistd.h> #include <sched.h> @@ -184,8 +187,9 @@ next_chunk: } static void -pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count) +pmalloc_update_lookup_table (clib_pmalloc_main_t *pm, u32 first, u32 count) { +#ifdef __linux uword seek, va, pa, p; int fd; u32 elts_per_page = 1U << (pm->def_log2_page_sz - pm->lookup_log2_page_sz); @@ -223,6 +227,45 @@ pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count) if (fd != -1) close (fd); +#elif defined(__FreeBSD__) + struct mem_extract meme; + uword p; + int fd; + u32 elts_per_page = 1U << (pm->def_log2_page_sz - pm->lookup_log2_page_sz); + + vec_validate_aligned (pm->lookup_table, + vec_len (pm->pages) * elts_per_page - 1, + CLIB_CACHE_LINE_BYTES); + + p = (uword) first * elts_per_page; + if (pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP) + { + while (p < (uword) elts_per_page * count) + { + pm->lookup_table[p] = + pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz); + p++; + } + return; + } + + fd = open ((char *) "/dev/mem", O_RDONLY); + if (fd == -1) + return; + + while (p < (uword) elts_per_page * count) + { + meme.me_vaddr = + pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz); + if (ioctl (fd, MEM_EXTRACT_PADDR, &meme) == -1) + continue; + pm->lookup_table[p] = meme.me_vaddr - meme.me_paddr; + p++; + } + return; +#else +#error "Unsupported OS" +#endif } static inline clib_pmalloc_page_t * |