diff options
Diffstat (limited to 'rootdir.c')
| -rw-r--r-- | rootdir.c | 73 |
1 files changed, 73 insertions, 0 deletions
@@ -22,6 +22,7 @@ #include <mach/vm_statistics.h> #include <mach/vm_cache_statistics.h> #include <mach/default_pager.h> +#include <mach_debug/mach_debug_types.h> #include <hurd/paths.h> #include <stdio.h> #include <unistd.h> @@ -35,6 +36,8 @@ #include "procfs_dir.h" #include "main.h" +#include "mach_debug_U.h" + /* This implements a directory node with the static files in /proc. NB: the libps functions for host information return static storage; using them would require locking and as a consequence it would be @@ -470,6 +473,69 @@ rootdir_mounts_exists (void *dir_hook, const void *entry_hook) translator_exists = access (MTAB_TRANSLATOR, F_OK|X_OK) == 0; return translator_exists; } + +static error_t +rootdir_gc_slabinfo (void *hook, char **contents, ssize_t *contents_len) +{ + error_t err; + FILE *m; + const char header[] = + "cache obj slab bufs objs bufs" + " total reclaimable\n" + "name flags size size /slab usage count" + " memory memory\n"; + cache_info_array_t cache_info; + size_t mem_usage, mem_reclaimable, mem_total, mem_total_reclaimable; + mach_msg_type_number_t cache_info_count; + int i; + + cache_info = NULL; + cache_info_count = 0; + + err = host_slab_info (mach_host_self(), &cache_info, &cache_info_count); + if (err) + return err; + + m = open_memstream (contents, contents_len); + if (m == NULL) + { + err = ENOMEM; + goto out; + } + + fprintf (m, "%s", header); + + mem_total = 0; + mem_total_reclaimable = 0; + + for (i = 0; i < cache_info_count; i++) + { + mem_usage = (cache_info[i].nr_slabs * cache_info[i].slab_size) + >> 10; + mem_total += mem_usage; + mem_reclaimable = (cache_info[i].flags & CACHE_FLAGS_NO_RECLAIM) + ? 0 : (cache_info[i].nr_free_slabs + * cache_info[i].slab_size) >> 10; + mem_total_reclaimable += mem_reclaimable; + fprintf (m, + "%-21s %04x %7zu %3zuk %4lu %6lu %6lu %7zuk %10zuk\n", + cache_info[i].name, cache_info[i].flags, + cache_info[i].obj_size, cache_info[i].slab_size >> 10, + cache_info[i].bufs_per_slab, cache_info[i].nr_objs, + cache_info[i].nr_bufs, mem_usage, mem_reclaimable); + } + + fprintf (m, "total: %zuk, reclaimable: %zuk\n", + mem_total, mem_total_reclaimable); + + fclose (m); + *contents_len += 1; /* For the terminating 0. */ + + out: + vm_deallocate (mach_task_self (), + cache_info, cache_info_count * sizeof *cache_info); + return err; +} /* Glue logic and entries table */ @@ -563,6 +629,13 @@ static const struct procfs_dir_entry rootdir_entries[] = { .exists = rootdir_mounts_exists, } }, + { + .name = "slabinfo", + .hook = & (struct procfs_node_ops) { + .get_contents = rootdir_gc_slabinfo, + .cleanup_contents = procfs_cleanup_contents_with_free, + }, + }, #ifdef PROFILE /* In order to get a usable gmon.out file, we must apparently use exit(). */ { |