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Date: Sun, 31 Oct 2010 00:04:40 -0400
From: Arnaud Lacombe <lacombar@...il.com>
To: Joe Perches <joe@...ches.com>
Cc: linux-kernel@...r.kernel.org, Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 1/2] kernel/module.c: Use pr_<level> and pr_fmt
Hi,
[not that I'm fond of getting my mailbox full of whitespace patches, but...]
On Sat, Oct 30, 2010 at 7:58 PM, Joe Perches <joe@...ches.com> wrote:
> Add missing KERN_CONT to printks
> Convert to pr_<level>
> Add "#define pr_fmt(fmt) fmt" so pr_<level> uses are not prefixed.
> Coalesce long formats for easier grep.
>
... until someone submit a new patch which would move back the the
line length to 80 char because check_<foo>.pl complained or because
they read `Documentation/CodingStyle'. That's an interresting way to
endlessly submit patches without any functional improvement.
- Arnaud
> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
> kernel/module.c | 108 +++++++++++++++++++++++-------------------------------
> 1 files changed, 46 insertions(+), 62 deletions(-)
>
> diff --git a/kernel/module.c b/kernel/module.c
> index 437a74a..9b6b0da 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -16,6 +16,9 @@
> along with this program; if not, write to the Free Software
> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> */
> +
> +#define pr_fmt(fmt) fmt
> +
> #include <linux/module.h>
> #include <linux/moduleloader.h>
> #include <linux/ftrace_event.h>
> @@ -315,26 +318,18 @@ static bool find_symbol_in_section(const struct symsearch *syms,
> if (syms->licence == GPL_ONLY)
> return false;
> if (syms->licence == WILL_BE_GPL_ONLY && fsa->warn) {
> - printk(KERN_WARNING "Symbol %s is being used "
> - "by a non-GPL module, which will not "
> - "be allowed in the future\n", fsa->name);
> - printk(KERN_WARNING "Please see the file "
> - "Documentation/feature-removal-schedule.txt "
> - "in the kernel source tree for more details.\n");
> + pr_warn("Symbol %s is being used by a non-GPL module, which will not be allowed in the future\n",
> + fsa->name);
> + pr_warn("Please see the file Documentation/feature-removal-schedule.txt in the kernel source tree for more details.\n");
> }
> }
>
> #ifdef CONFIG_UNUSED_SYMBOLS
> if (syms->unused && fsa->warn) {
> - printk(KERN_WARNING "Symbol %s is marked as UNUSED, "
> - "however this module is using it.\n", fsa->name);
> - printk(KERN_WARNING
> - "This symbol will go away in the future.\n");
> - printk(KERN_WARNING
> - "Please evalute if this is the right api to use and if "
> - "it really is, submit a report the linux kernel "
> - "mailinglist together with submitting your code for "
> - "inclusion.\n");
> + pr_warn("Symbol %s is marked as UNUSED, however this module is using it.\n",
> + fsa->name);
> + pr_warn("This symbol will go away in the future.\n");
> + pr_warn("Please evalute if this is the right api to use and if it really is, submit a report to the linux kernel mailing list together with submitting your code for inclusion.\n");
> }
> #endif
>
> @@ -395,16 +390,15 @@ static int percpu_modalloc(struct module *mod,
> unsigned long size, unsigned long align)
> {
> if (align > PAGE_SIZE) {
> - printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n",
> - mod->name, align, PAGE_SIZE);
> + pr_warn("%s: per-cpu alignment %li > %li\n",
> + mod->name, align, PAGE_SIZE);
> align = PAGE_SIZE;
> }
>
> mod->percpu = __alloc_reserved_percpu(size, align);
> if (!mod->percpu) {
> - printk(KERN_WARNING
> - "%s: Could not allocate %lu bytes percpu data\n",
> - mod->name, size);
> + pr_warn("%s: Could not allocate %lu bytes percpu data\n",
> + mod->name, size);
> return -ENOMEM;
> }
> mod->percpu_size = size;
> @@ -578,7 +572,7 @@ static int add_module_usage(struct module *a, struct module *b)
> DEBUGP("Allocating new usage for %s.\n", a->name);
> use = kmalloc(sizeof(*use), GFP_ATOMIC);
> if (!use) {
> - printk(KERN_WARNING "%s: out of memory loading\n", a->name);
> + pr_warn("%s: out of memory loading\n", a->name);
> return -ENOMEM;
> }
>
> @@ -947,8 +941,7 @@ static int try_to_force_load(struct module *mod, const char *reason)
> {
> #ifdef CONFIG_MODULE_FORCE_LOAD
> if (!test_taint(TAINT_FORCED_MODULE))
> - printk(KERN_WARNING "%s: %s: kernel tainted.\n",
> - mod->name, reason);
> + pr_warn("%s: %s: kernel tainted\n", mod->name, reason);
> add_taint_module(mod, TAINT_FORCED_MODULE);
> return 0;
> #else
> @@ -1001,13 +994,12 @@ static int check_version(Elf_Shdr *sechdrs,
> goto bad_version;
> }
>
> - printk(KERN_WARNING "%s: no symbol version for %s\n",
> - mod->name, symname);
> + pr_warn("%s: no symbol version for %s\n", mod->name, symname);
> return 0;
>
> bad_version:
> - printk("%s: disagrees about version of symbol %s\n",
> - mod->name, symname);
> + pr_warn("%s: disagrees about version of symbol %s\n",
> + mod->name, symname);
> return 0;
> }
>
> @@ -1110,8 +1102,8 @@ resolve_symbol_wait(struct module *mod,
> !IS_ERR(ksym = resolve_symbol(mod, info, name, owner))
> || PTR_ERR(ksym) != -EBUSY,
> 30 * HZ) <= 0) {
> - printk(KERN_WARNING "%s: gave up waiting for init of module %s.\n",
> - mod->name, owner);
> + pr_warn("%s: gave up waiting for init of module %s\n",
> + mod->name, owner);
> }
> return ksym;
> }
> @@ -1419,15 +1411,14 @@ static int mod_sysfs_init(struct module *mod)
> struct kobject *kobj;
>
> if (!module_sysfs_initialized) {
> - printk(KERN_ERR "%s: module sysfs not initialized\n",
> - mod->name);
> + pr_err("%s: module sysfs not initialized\n", mod->name);
> err = -EINVAL;
> goto out;
> }
>
> kobj = kset_find_obj(module_kset, mod->name);
> if (kobj) {
> - printk(KERN_ERR "%s: module is already loaded\n", mod->name);
> + pr_err("%s: module is already loaded\n", mod->name);
> kobject_put(kobj);
> err = -EINVAL;
> goto out;
> @@ -1623,9 +1614,7 @@ static int verify_export_symbols(struct module *mod)
> for (i = 0; i < ARRAY_SIZE(arr); i++) {
> for (s = arr[i].sym; s < arr[i].sym + arr[i].num; s++) {
> if (find_symbol(s->name, &owner, NULL, true, false)) {
> - printk(KERN_ERR
> - "%s: exports duplicate symbol %s"
> - " (owned by %s)\n",
> + pr_err("%s: exports duplicate symbol %s (owned by %s)\n",
> mod->name, s->name, module_name(owner));
> return -ENOEXEC;
> }
> @@ -1652,8 +1641,8 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
> /* We compiled with -fno-common. These are not
> supposed to happen. */
> DEBUGP("Common symbol: %s\n", name);
> - printk("%s: please compile with -fno-common\n",
> - mod->name);
> + pr_info("%s: please compile with -fno-common\n",
> + mod->name);
> ret = -ENOEXEC;
> break;
>
> @@ -1675,8 +1664,8 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
> if (!ksym && ELF_ST_BIND(sym[i].st_info) == STB_WEAK)
> break;
>
> - printk(KERN_WARNING "%s: Unknown symbol %s (err %li)\n",
> - mod->name, name, PTR_ERR(ksym));
> + pr_warn("%s: Unknown symbol %s (err %li)\n",
> + mod->name, name, PTR_ERR(ksym));
> ret = PTR_ERR(ksym) ?: -ENOENT;
> break;
>
> @@ -1808,8 +1797,8 @@ static void set_license(struct module *mod, const char *license)
>
> if (!license_is_gpl_compatible(license)) {
> if (!test_taint(TAINT_PROPRIETARY_MODULE))
> - printk(KERN_WARNING "%s: module license '%s' taints "
> - "kernel.\n", mod->name, license);
> + pr_warn("%s: module license '%s' taints kernel\n",
> + mod->name, license);
> add_taint_module(mod, TAINT_PROPRIETARY_MODULE);
> }
> }
> @@ -2048,8 +2037,8 @@ static void dynamic_debug_setup(struct _ddebug *debug, unsigned int num)
> return;
> #ifdef CONFIG_DYNAMIC_DEBUG
> if (ddebug_add_module(debug, num, debug->modname))
> - printk(KERN_ERR "dynamic debug error adding module: %s\n",
> - debug->modname);
> + pr_err("dynamic debug error adding module: %s\n",
> + debug->modname);
> #endif
> }
>
> @@ -2163,8 +2152,7 @@ static int rewrite_section_headers(struct load_info *info)
> Elf_Shdr *shdr = &info->sechdrs[i];
> if (shdr->sh_type != SHT_NOBITS
> && info->len < shdr->sh_offset + shdr->sh_size) {
> - printk(KERN_ERR "Module len %lu truncated\n",
> - info->len);
> + pr_err("Module len %lu truncated\n", info->len);
> return -ENOEXEC;
> }
>
> @@ -2223,15 +2211,14 @@ static struct module *setup_load_info(struct load_info *info)
>
> info->index.mod = find_sec(info, ".gnu.linkonce.this_module");
> if (!info->index.mod) {
> - printk(KERN_WARNING "No module found in object\n");
> + pr_warn("No module found in object\n");
> return ERR_PTR(-ENOEXEC);
> }
> /* This is temporary: point mod into copy of data. */
> mod = (void *)info->sechdrs[info->index.mod].sh_addr;
>
> if (info->index.sym == 0) {
> - printk(KERN_WARNING "%s: module has no symbols (stripped?)\n",
> - mod->name);
> + pr_warn("%s: module has no symbols (stripped?)\n", mod->name);
> return ERR_PTR(-ENOEXEC);
> }
>
> @@ -2255,16 +2242,15 @@ static int check_modinfo(struct module *mod, struct load_info *info)
> if (err)
> return err;
> } else if (!same_magic(modmagic, vermagic, info->index.vers)) {
> - printk(KERN_ERR "%s: version magic '%s' should be '%s'\n",
> + pr_err("%s: version magic '%s' should be '%s'\n",
> mod->name, modmagic, vermagic);
> return -ENOEXEC;
> }
>
> if (get_modinfo(info, "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);
> + pr_warn("%s: module is from the staging directory, the quality is unknown, you have been warned.\n",
> + mod->name);
> }
>
> /* Set up license info based on the info section */
> @@ -2337,8 +2323,7 @@ static void find_module_sections(struct module *mod, struct load_info *info)
> sizeof(*mod->extable), &mod->num_exentries);
>
> if (section_addr(info, "__obsparm"))
> - printk(KERN_WARNING "%s: Ignoring obsolete parameters\n",
> - mod->name);
> + pr_warn("%s: Ignoring obsolete parameters\n", mod->name);
>
> info->debug = section_objs(info, "__verbose",
> sizeof(*info->debug), &info->num_debug);
> @@ -2727,11 +2712,10 @@ SYSCALL_DEFINE3(init_module, void __user *, umod,
> return ret;
> }
> if (ret > 0) {
> - printk(KERN_WARNING
> -"%s: '%s'->init suspiciously returned %d, it should follow 0/-E convention\n"
> -"%s: loading module anyway...\n",
> - __func__, mod->name, ret,
> - __func__);
> + pr_warn(
> +"%s: '%s'->init suspiciously returned %d, it should follow 0/-E convention\n%s: loading module anyway...\n",
> + __func__, mod->name, ret,
> + __func__);
> dump_stack();
> }
>
> @@ -3200,11 +3184,11 @@ void print_modules(void)
> /* Most callers should already have preempt disabled, but make sure */
> preempt_disable();
> list_for_each_entry_rcu(mod, &modules, list)
> - printk(" %s%s", mod->name, module_flags(mod, buf));
> + pr_cont(" %s%s", mod->name, module_flags(mod, buf));
> preempt_enable();
> if (last_unloaded_module[0])
> - printk(" [last unloaded: %s]", last_unloaded_module);
> - printk("\n");
> + pr_cont(" [last unloaded: %s]", last_unloaded_module);
> + pr_cont("\n");
> }
>
> #ifdef CONFIG_MODVERSIONS
> --
> 1.7.3.1.g432b3.dirty
>
> --
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