diff options
Diffstat (limited to 'src/vppinfra/linux')
| -rw-r--r-- | src/vppinfra/linux/sysfs.c | 27 | ||||
| -rw-r--r-- | src/vppinfra/linux/sysfs.h | 2 |
2 files changed, 29 insertions, 0 deletions
diff --git a/src/vppinfra/linux/sysfs.c b/src/vppinfra/linux/sysfs.c index 1157e4fe655..758eaa1a86c 100644 --- a/src/vppinfra/linux/sysfs.c +++ b/src/vppinfra/linux/sysfs.c @@ -16,6 +16,7 @@ #include <vppinfra/clib.h> #include <vppinfra/clib_error.h> #include <vppinfra/format.h> +#include <vppinfra/bitmap.h> #include <sys/types.h> #include <sys/stat.h> @@ -262,6 +263,32 @@ clib_sysfs_prealloc_hugepages (int numa_node, int log2_page_size, int nr) return clib_sysfs_set_nr_hugepages (numa_node, log2_page_size, n + needed); } +__clib_export uword * +clib_sysfs_list_to_bitmap (char *filename) +{ + FILE *fp; + uword *r = 0; + + fp = fopen (filename, "r"); + + if (fp != NULL) + { + u8 *buffer = 0; + vec_validate (buffer, 256 - 1); + if (fgets ((char *) buffer, 256, fp)) + { + unformat_input_t in; + unformat_init_string (&in, (char *) buffer, + strlen ((char *) buffer)); + if (unformat (&in, "%U", unformat_bitmap_list, &r) != 1) + clib_warning ("unformat_bitmap_list failed"); + unformat_free (&in); + } + vec_free (buffer); + fclose (fp); + } + return r; +} /* * fd.io coding-style-patch-verification: ON diff --git a/src/vppinfra/linux/sysfs.h b/src/vppinfra/linux/sysfs.h index 5f5eec2d07a..9cbc34823dd 100644 --- a/src/vppinfra/linux/sysfs.h +++ b/src/vppinfra/linux/sysfs.h @@ -35,6 +35,8 @@ clib_error_t *clib_sysfs_get_surplus_hugepages (int numa_node, clib_error_t *clib_sysfs_prealloc_hugepages (int numa_node, int log2_page_size, int nr); +uword *clib_sysfs_list_to_bitmap (char *filename); + #endif /* included_linux_sysfs_h */ /* |