module: cleanup comments, remove noinline
On my (32-bit x86) machine, sys_init_module() uses 124 bytes of stack
once load_module() is inlined.
This effectively reverts ffb4ba76 which inlined it due to stack
pressure.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/kernel/module.c b/kernel/module.c
index f3cba93..d0b5f8d 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1,6 +1,6 @@
/*
Copyright (C) 2002 Richard Henderson
- Copyright (C) 2001 Rusty Russell, 2002 Rusty Russell IBM.
+ Copyright (C) 2001 Rusty Russell, 2002, 2010 Rusty Russell IBM.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -2523,12 +2523,14 @@
static int post_relocation(struct module *mod, const struct load_info *info)
{
+ /* Sort exception table now relocations are done. */
sort_extable(mod->extable, mod->extable + mod->num_exentries);
/* Copy relocated percpu area over. */
percpu_modcopy(mod, (void *)info->sechdrs[info->index.pcpu].sh_addr,
info->sechdrs[info->index.pcpu].sh_size);
+ /* Setup kallsyms-specific fields. */
add_kallsyms(mod, info);
/* Arch-specific module finalizing. */
@@ -2537,7 +2539,7 @@
/* Allocate and load the module: note that size of section 0 is always
zero, and we rely on this for optional sections. */
-static noinline struct module *load_module(void __user *umod,
+static struct module *load_module(void __user *umod,
unsigned long len,
const char __user *uargs)
{
@@ -2598,6 +2600,7 @@
goto free_arch_cleanup;
}
+ /* Mark state as coming so strong_try_module_get() ignores us. */
mod->state = MODULE_STATE_COMING;
/* Now sew it into the lists so we can get lockdep and oops
@@ -2625,10 +2628,12 @@
list_add_rcu(&mod->list, &modules);
mutex_unlock(&module_mutex);
+ /* Module is ready to execute: parsing args may do that. */
err = parse_args(mod->name, mod->args, mod->kp, mod->num_kp, NULL);
if (err < 0)
goto unlink;
+ /* Link in to syfs. */
err = mod_sysfs_setup(mod, &info, mod->kp, mod->num_kp);
if (err < 0)
goto unlink;
@@ -2637,9 +2642,8 @@
kfree(info.strmap);
free_copy(&info);
- trace_module_load(mod);
-
/* Done! */
+ trace_module_load(mod);
return mod;
unlink: