[SCSI] refactor sdev/starget/shost busy checking

[linux-2.6-omap-h63xx.git] / kernel / module.c

diff --git a/kernel/module.c b/kernel/module.c
index dd9ac6ad5cb9575926c2d3e6ce74b27f97ae40cf..25bc9ac9e226ae02dce8ff39a7c1d914684b4e3e 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -784,6 +784,7 @@ sys_delete_module(const char __user *name_user, unsigned int flags)
        mutex_lock(&module_mutex);
        /* Store the name of the last unloaded module for diagnostic purposes */
        strlcpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module));
+       unregister_dynamic_debug_module(mod->name);
        free_module(mod);
 
  out:
@@ -1173,7 +1174,7 @@ static void free_notes_attrs(struct module_notes_attrs *notes_attrs,
                while (i-- > 0)
                        sysfs_remove_bin_file(notes_attrs->dir,
                                              &notes_attrs->attrs[i]);
-               kobject_del(notes_attrs->dir);
+               kobject_put(notes_attrs->dir);
        }
        kfree(notes_attrs);
 }
@@ -1783,6 +1784,33 @@ static inline void add_kallsyms(struct module *mod,
 }
 #endif /* CONFIG_KALLSYMS */
 
+#ifdef CONFIG_DYNAMIC_PRINTK_DEBUG
+static void dynamic_printk_setup(Elf_Shdr *sechdrs, unsigned int verboseindex)
+{
+       struct mod_debug *debug_info;
+       unsigned long pos, end;
+       unsigned int num_verbose;
+
+       pos = sechdrs[verboseindex].sh_addr;
+       num_verbose = sechdrs[verboseindex].sh_size /
+                               sizeof(struct mod_debug);
+       end = pos + (num_verbose * sizeof(struct mod_debug));
+
+       for (; pos < end; pos += sizeof(struct mod_debug)) {
+               debug_info = (struct mod_debug *)pos;
+               register_dynamic_debug_module(debug_info->modname,
+                       debug_info->type, debug_info->logical_modname,
+                       debug_info->flag_names, debug_info->hash,
+                       debug_info->hash2);
+       }
+}
+#else
+static inline void dynamic_printk_setup(Elf_Shdr *sechdrs,
+                                       unsigned int verboseindex)
+{
+}
+#endif /* CONFIG_DYNAMIC_PRINTK_DEBUG */
+
 static void *module_alloc_update_bounds(unsigned long size)
 {
        void *ret = module_alloc(size);
@@ -1806,6 +1834,7 @@ static noinline struct module *load_module(void __user *umod,
        Elf_Ehdr *hdr;
        Elf_Shdr *sechdrs;
        char *secstrings, *args, *modmagic, *strtab = NULL;
+       char *staging;
        unsigned int i;
        unsigned int symindex = 0;
        unsigned int strindex = 0;
@@ -1831,6 +1860,7 @@ static noinline struct module *load_module(void __user *umod,
 #endif
        unsigned int markersindex;
        unsigned int markersstringsindex;
+       unsigned int verboseindex;
        struct module *mod;
        long err = 0;
        void *percpu = NULL, *ptr = NULL; /* Stops spurious gcc warning */
@@ -1960,6 +1990,14 @@ static noinline struct module *load_module(void __user *umod,
                goto free_hdr;
        }
 
+       staging = get_modinfo(sechdrs, infoindex, "staging");
+       if (staging) {
+               add_taint_module(mod, TAINT_CRAP);
+               printk(KERN_WARNING "%s: module is from the staging directory,"
+                      " the quality is unknown, you have been warned.\n",
+                      mod->name);
+       }
+
        /* Now copy in args */
        args = strndup_user(uargs, ~0UL >> 1);
        if (IS_ERR(args)) {
@@ -2117,6 +2155,7 @@ static noinline struct module *load_module(void __user *umod,
        markersindex = find_sec(hdr, sechdrs, secstrings, "__markers");
        markersstringsindex = find_sec(hdr, sechdrs, secstrings,
                                        "__markers_strings");
+       verboseindex = find_sec(hdr, sechdrs, secstrings, "__verbose");
 
        /* Now do relocations. */
        for (i = 1; i < hdr->e_shnum; i++) {
@@ -2167,6 +2206,7 @@ static noinline struct module *load_module(void __user *umod,
                marker_update_probe_range(mod->markers,
                        mod->markers + mod->num_markers);
 #endif
+       dynamic_printk_setup(sechdrs, verboseindex);
        err = module_finalize(hdr, sechdrs, mod);
        if (err < 0)
                goto cleanup;
@@ -2556,6 +2596,8 @@ static char *module_flags(struct module *mod, char *buf)
                        buf[bx++] = 'P';
                if (mod->taints & (1 << TAINT_FORCED_MODULE))
                        buf[bx++] = 'F';
+               if (mod->taints & (1 << TAINT_CRAP))
+                       buf[bx++] = 'C';
                /*
                 * TAINT_FORCED_RMMOD: could be added.
                 * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't