coherency_line_size: the minimum amount of data in bytes that gets
transferred from memory to cache
- level: the cache hierarcy in the multi-level cache configuration
+ level: the cache hierarchy in the multi-level cache configuration
number_of_sets: total number of sets in the cache, a set is a
collection of cache lines with the same cache index
auto selects the default scheme, which automatically
enables eagerfpu restore for xsaveopt.
+ module.async_probe [KNL]
+ Enable asynchronous probe on this module.
+
early_ioremap_debug [KNL]
Enable debug messages in early_ioremap support. This
is useful for tracking down temporary early mappings
F: lib/lru_cache.c
F: Documentation/blockdev/drbd/
-DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
+DRIVER CORE, KOBJECTS, DEBUGFS, KERNFS AND SYSFS
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
S: Supported
F: Documentation/kobject.txt
F: drivers/base/
-F: fs/sysfs/
F: fs/debugfs/
-F: include/linux/kobj*
+F: fs/kernfs/
+F: fs/sysfs/
F: include/linux/debugfs.h
+F: include/linux/kobj*
F: lib/kobj*
DRM DRIVERS
unsigned long gpage_npages[MMU_PAGE_COUNT];
static int __init do_gpage_early_setup(char *param, char *val,
- const char *unused)
+ const char *unused, void *arg)
{
static phys_addr_t size;
unsigned long npages;
strlcpy(cmdline, boot_command_line, COMMAND_LINE_SIZE);
parse_args("hugetlb gpages", cmdline, NULL, 0, 0, 0,
- &do_gpage_early_setup);
+ NULL, &do_gpage_early_setup);
/*
* Walk gpage list in reverse, allocating larger page sizes first.
{
return drv->bus->match ? drv->bus->match(dev, drv) : 1;
}
+extern bool driver_allows_async_probing(struct device_driver *drv);
extern int driver_add_groups(struct device_driver *drv,
const struct attribute_group **groups);
*
*/
+#include <linux/async.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/errno.h>
{
struct bus_type *bus = dev->bus;
struct subsys_interface *sif;
- int ret;
if (!bus)
return;
- if (bus->p->drivers_autoprobe) {
- ret = device_attach(dev);
- WARN_ON(ret < 0);
- }
+ if (bus->p->drivers_autoprobe)
+ device_initial_probe(dev);
mutex_lock(&bus->p->mutex);
list_for_each_entry(sif, &bus->p->interfaces, node)
}
static DRIVER_ATTR_WO(uevent);
+static void driver_attach_async(void *_drv, async_cookie_t cookie)
+{
+ struct device_driver *drv = _drv;
+ int ret;
+
+ ret = driver_attach(drv);
+
+ pr_debug("bus: '%s': driver %s async attach completed: %d\n",
+ drv->bus->name, drv->name, ret);
+}
+
/**
* bus_add_driver - Add a driver to the bus.
* @drv: driver.
klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
if (drv->bus->p->drivers_autoprobe) {
- error = driver_attach(drv);
- if (error)
- goto out_unregister;
+ if (driver_allows_async_probing(drv)) {
+ pr_debug("bus: '%s': probing driver %s asynchronously\n",
+ drv->bus->name, drv->name);
+ async_schedule(driver_attach_async, drv);
+ } else {
+ error = driver_attach(drv);
+ if (error)
+ goto out_unregister;
+ }
}
module_add_driver(drv->owner, drv);
if (ret)
goto free_ci;
/*
- * For systems using DT for cache hierarcy, of_node and shared_cpu_map
+ * For systems using DT for cache hierarchy, of_node and shared_cpu_map
* will be set up here only if they are not populated already
*/
ret = cache_shared_cpu_map_setup(cpu);
if (ret) {
- pr_warn("Unable to detect cache hierarcy from DT for CPU %d\n",
+ pr_warn("Unable to detect cache hierarchy from DT for CPU %d\n",
cpu);
goto free_ci;
}
#include <linux/acpi.h>
#include <linux/of.h>
#include <linux/cpufeature.h>
+#include <linux/tick.h>
#include "base.h"
}
static DEVICE_ATTR(offline, 0444, print_cpus_offline, NULL);
+static ssize_t print_cpus_isolated(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int n = 0, len = PAGE_SIZE-2;
+
+ n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(cpu_isolated_map));
+
+ return n;
+}
+static DEVICE_ATTR(isolated, 0444, print_cpus_isolated, NULL);
+
+#ifdef CONFIG_NO_HZ_FULL
+static ssize_t print_cpus_nohz_full(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int n = 0, len = PAGE_SIZE-2;
+
+ n = scnprintf(buf, len, "%*pbl\n", cpumask_pr_args(tick_nohz_full_mask));
+
+ return n;
+}
+static DEVICE_ATTR(nohz_full, 0444, print_cpus_nohz_full, NULL);
+#endif
+
static void cpu_device_release(struct device *dev)
{
/*
&cpu_attrs[2].attr.attr,
&dev_attr_kernel_max.attr,
&dev_attr_offline.attr,
+ &dev_attr_isolated.attr,
+#ifdef CONFIG_NO_HZ_FULL
+ &dev_attr_nohz_full.attr,
+#endif
#ifdef CONFIG_GENERIC_CPU_AUTOPROBE
&dev_attr_modalias.attr,
#endif
* more than one device is probing at the same time, it is possible for one
* probe to complete successfully while another is about to defer. If the second
* depends on the first, then it will get put on the pending list after the
- * trigger event has already occured and will be stuck there.
+ * trigger event has already occurred and will be stuck there.
*
* The atomic 'deferred_trigger_count' is used to determine if a successful
* trigger has occurred in the midst of probing a driver. If the trigger count
return ret;
}
-static int __device_attach(struct device_driver *drv, void *data)
+bool driver_allows_async_probing(struct device_driver *drv)
{
- struct device *dev = data;
+ switch (drv->probe_type) {
+ case PROBE_PREFER_ASYNCHRONOUS:
+ return true;
+
+ case PROBE_FORCE_SYNCHRONOUS:
+ return false;
+
+ default:
+ if (module_requested_async_probing(drv->owner))
+ return true;
+
+ return false;
+ }
+}
+
+struct device_attach_data {
+ struct device *dev;
+
+ /*
+ * Indicates whether we are are considering asynchronous probing or
+ * not. Only initial binding after device or driver registration
+ * (including deferral processing) may be done asynchronously, the
+ * rest is always synchronous, as we expect it is being done by
+ * request from userspace.
+ */
+ bool check_async;
+
+ /*
+ * Indicates if we are binding synchronous or asynchronous drivers.
+ * When asynchronous probing is enabled we'll execute 2 passes
+ * over drivers: first pass doing synchronous probing and second
+ * doing asynchronous probing (if synchronous did not succeed -
+ * most likely because there was no driver requiring synchronous
+ * probing - and we found asynchronous driver during first pass).
+ * The 2 passes are done because we can't shoot asynchronous
+ * probe for given device and driver from bus_for_each_drv() since
+ * driver pointer is not guaranteed to stay valid once
+ * bus_for_each_drv() iterates to the next driver on the bus.
+ */
+ bool want_async;
+
+ /*
+ * We'll set have_async to 'true' if, while scanning for matching
+ * driver, we'll encounter one that requests asynchronous probing.
+ */
+ bool have_async;
+};
+
+static int __device_attach_driver(struct device_driver *drv, void *_data)
+{
+ struct device_attach_data *data = _data;
+ struct device *dev = data->dev;
+ bool async_allowed;
+
+ /*
+ * Check if device has already been claimed. This may
+ * happen with driver loading, device discovery/registration,
+ * and deferred probe processing happens all at once with
+ * multiple threads.
+ */
+ if (dev->driver)
+ return -EBUSY;
if (!driver_match_device(drv, dev))
return 0;
+ async_allowed = driver_allows_async_probing(drv);
+
+ if (async_allowed)
+ data->have_async = true;
+
+ if (data->check_async && async_allowed != data->want_async)
+ return 0;
+
return driver_probe_device(drv, dev);
}
-/**
- * device_attach - try to attach device to a driver.
- * @dev: device.
- *
- * Walk the list of drivers that the bus has and call
- * driver_probe_device() for each pair. If a compatible
- * pair is found, break out and return.
- *
- * Returns 1 if the device was bound to a driver;
- * 0 if no matching driver was found;
- * -ENODEV if the device is not registered.
- *
- * When called for a USB interface, @dev->parent lock must be held.
- */
-int device_attach(struct device *dev)
+static void __device_attach_async_helper(void *_dev, async_cookie_t cookie)
+{
+ struct device *dev = _dev;
+ struct device_attach_data data = {
+ .dev = dev,
+ .check_async = true,
+ .want_async = true,
+ };
+
+ device_lock(dev);
+
+ bus_for_each_drv(dev->bus, NULL, &data, __device_attach_driver);
+ dev_dbg(dev, "async probe completed\n");
+
+ pm_request_idle(dev);
+
+ device_unlock(dev);
+
+ put_device(dev);
+}
+
+static int __device_attach(struct device *dev, bool allow_async)
{
int ret = 0;
ret = 0;
}
} else {
- ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);
- pm_request_idle(dev);
+ struct device_attach_data data = {
+ .dev = dev,
+ .check_async = allow_async,
+ .want_async = false,
+ };
+
+ ret = bus_for_each_drv(dev->bus, NULL, &data,
+ __device_attach_driver);
+ if (!ret && allow_async && data.have_async) {
+ /*
+ * If we could not find appropriate driver
+ * synchronously and we are allowed to do
+ * async probes and there are drivers that
+ * want to probe asynchronously, we'll
+ * try them.
+ */
+ dev_dbg(dev, "scheduling asynchronous probe\n");
+ get_device(dev);
+ async_schedule(__device_attach_async_helper, dev);
+ } else {
+ pm_request_idle(dev);
+ }
}
out_unlock:
device_unlock(dev);
return ret;
}
+
+/**
+ * device_attach - try to attach device to a driver.
+ * @dev: device.
+ *
+ * Walk the list of drivers that the bus has and call
+ * driver_probe_device() for each pair. If a compatible
+ * pair is found, break out and return.
+ *
+ * Returns 1 if the device was bound to a driver;
+ * 0 if no matching driver was found;
+ * -ENODEV if the device is not registered.
+ *
+ * When called for a USB interface, @dev->parent lock must be held.
+ */
+int device_attach(struct device *dev)
+{
+ return __device_attach(dev, false);
+}
EXPORT_SYMBOL_GPL(device_attach);
+void device_initial_probe(struct device *dev)
+{
+ __device_attach(dev, true);
+}
+
static int __driver_attach(struct device *dev, void *data)
{
struct device_driver *drv = data;
drv = dev->driver;
if (drv) {
+ if (driver_allows_async_probing(drv))
+ async_synchronize_full();
+
pm_runtime_get_sync(dev);
driver_sysfs_remove(dev);
int page_array_size;
struct list_head pending_list;
#endif
- char fw_id[];
+ const char *fw_id;
};
struct fw_cache_entry {
struct list_head list;
- char name[];
+ const char *name;
};
struct fw_name_devm {
unsigned long magic;
- char name[];
+ const char *name;
};
#define to_fwbuf(d) container_of(d, struct firmware_buf, ref)
{
struct firmware_buf *buf;
- buf = kzalloc(sizeof(*buf) + strlen(fw_name) + 1, GFP_ATOMIC);
-
+ buf = kzalloc(sizeof(*buf), GFP_ATOMIC);
if (!buf)
- return buf;
+ return NULL;
+
+ buf->fw_id = kstrdup_const(fw_name, GFP_ATOMIC);
+ if (!buf->fw_id) {
+ kfree(buf);
+ return NULL;
+ }
kref_init(&buf->ref);
- strcpy(buf->fw_id, fw_name);
buf->fwc = fwc;
init_completion(&buf->completion);
#ifdef CONFIG_FW_LOADER_USER_HELPER
} else
#endif
vfree(buf->data);
+ kfree_const(buf->fw_id);
kfree(buf);
}
static int fw_get_filesystem_firmware(struct device *device,
struct firmware_buf *buf)
{
- int i;
+ int i, len;
int rc = -ENOENT;
- char *path = __getname();
+ char *path;
+
+ path = __getname();
+ if (!path)
+ return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(fw_path); i++) {
struct file *file;
if (!fw_path[i][0])
continue;
- snprintf(path, PATH_MAX, "%s/%s", fw_path[i], buf->fw_id);
+ len = snprintf(path, PATH_MAX, "%s/%s",
+ fw_path[i], buf->fw_id);
+ if (len >= PATH_MAX) {
+ rc = -ENAMETOOLONG;
+ break;
+ }
file = filp_open(path, O_RDONLY, 0);
if (IS_ERR(file))
if (fwn->magic == (unsigned long)&fw_cache)
pr_debug("%s: fw_name-%s devm-%p released\n",
__func__, fwn->name, res);
+ kfree_const(fwn->name);
}
static int fw_devm_match(struct device *dev, void *res,
if (fwn)
return 1;
- fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm) +
- strlen(name) + 1, GFP_KERNEL);
+ fwn = devres_alloc(fw_name_devm_release, sizeof(struct fw_name_devm),
+ GFP_KERNEL);
if (!fwn)
return -ENOMEM;
+ fwn->name = kstrdup_const(name, GFP_KERNEL);
+ if (!fwn->name) {
+ kfree(fwn);
+ return -ENOMEM;
+ }
fwn->magic = (unsigned long)&fw_cache;
- strcpy(fwn->name, name);
devres_add(dev, fwn);
return 0;
put_device(fw_work->device); /* taken in request_firmware_nowait() */
module_put(fw_work->module);
+ kfree_const(fw_work->name);
kfree(fw_work);
}
return -ENOMEM;
fw_work->module = module;
- fw_work->name = name;
+ fw_work->name = kstrdup_const(name, gfp);
+ if (!fw_work->name) {
+ kfree(fw_work);
+ return -ENOMEM;
+ }
fw_work->device = device;
fw_work->context = context;
fw_work->cont = cont;
(uevent ? FW_OPT_UEVENT : FW_OPT_USERHELPER);
if (!try_module_get(module)) {
+ kfree_const(fw_work->name);
kfree(fw_work);
return -EFAULT;
}
{
struct fw_cache_entry *fce;
- fce = kzalloc(sizeof(*fce) + strlen(name) + 1, GFP_ATOMIC);
+ fce = kzalloc(sizeof(*fce), GFP_ATOMIC);
if (!fce)
goto exit;
- strcpy(fce->name, name);
+ fce->name = kstrdup_const(name, GFP_ATOMIC);
+ if (!fce->name) {
+ kfree(fce);
+ fce = NULL;
+ goto exit;
+ }
exit:
return fce;
}
static void free_fw_cache_entry(struct fw_cache_entry *fce)
{
+ kfree_const(fce->name);
kfree(fce);
}
{
int retval, code;
+ if (drv->driver.probe_type == PROBE_PREFER_ASYNCHRONOUS) {
+ pr_err("%s: drivers registered with %s can not be probed asynchronously\n",
+ drv->driver.name, __func__);
+ return -EINVAL;
+ }
+
+ /*
+ * We have to run our probes synchronously because we check if
+ * we find any devices to bind to and exit with error if there
+ * are any.
+ */
+ drv->driver.probe_type = PROBE_FORCE_SYNCHRONOUS;
+
/*
* Prevent driver from requesting probe deferral to avoid further
* futile probe attempts.
.probe = probe_one_instance,
.remove = remove_one_instance,
.id_table = amd64_pci_table,
+ .driver.probe_type = PROBE_FORCE_SYNCHRONOUS,
};
static void setup_pci_device(void)
struct kernfs_node *kn = filp->f_path.dentry->d_fsdata;
struct kernfs_open_node *on = kn->attr.open;
- /* need parent for the kobj, grab both */
if (!kernfs_get_active(kn))
goto trigger;
return 0;
if (size) {
- if (pos > size)
+ if (pos >= size)
return 0;
if (pos + count > size)
count = size - pos;
* This function creates a group for the first time. It will explicitly
* warn and error if any of the attribute files being created already exist.
*
- * Returns 0 on success or error.
+ * Returns 0 on success or error code on failure.
*/
int sysfs_create_group(struct kobject *kobj,
const struct attribute_group *grp)
* It will explicitly warn and error if any of the attribute files being
* created already exist.
*
- * Returns 0 on success or error code from sysfs_create_group on error.
+ * Returns 0 on success or error code from sysfs_create_group on failure.
*/
int sysfs_create_groups(struct kobject *kobj,
const struct attribute_group **groups)
* The primary use for this function is to call it after making a change
* that affects group visibility.
*
- * Returns 0 on success or error.
+ * Returns 0 on success or error code on failure.
*/
int sysfs_update_group(struct kobject *kobj,
const struct attribute_group *grp)
/**
* struct cacheinfo - represent a cache leaf node
* @type: type of the cache - data, inst or unified
- * @level: represents the hierarcy in the multi-level cache
+ * @level: represents the hierarchy in the multi-level cache
* @coherency_line_size: size of each cache line usually representing
* the minimum amount of data that gets transferred from memory
* @number_of_sets: total number of sets, a set is a collection of cache
extern struct kset *bus_get_kset(struct bus_type *bus);
extern struct klist *bus_get_device_klist(struct bus_type *bus);
+/**
+ * enum probe_type - device driver probe type to try
+ * Device drivers may opt in for special handling of their
+ * respective probe routines. This tells the core what to
+ * expect and prefer.
+ *
+ * @PROBE_DEFAULT_STRATEGY: Used by drivers that work equally well
+ * whether probed synchronously or asynchronously.
+ * @PROBE_PREFER_ASYNCHRONOUS: Drivers for "slow" devices which
+ * probing order is not essential for booting the system may
+ * opt into executing their probes asynchronously.
+ * @PROBE_FORCE_SYNCHRONOUS: Use this to annotate drivers that need
+ * their probe routines to run synchronously with driver and
+ * device registration (with the exception of -EPROBE_DEFER
+ * handling - re-probing always ends up being done asynchronously).
+ *
+ * Note that the end goal is to switch the kernel to use asynchronous
+ * probing by default, so annotating drivers with
+ * %PROBE_PREFER_ASYNCHRONOUS is a temporary measure that allows us
+ * to speed up boot process while we are validating the rest of the
+ * drivers.
+ */
+enum probe_type {
+ PROBE_DEFAULT_STRATEGY,
+ PROBE_PREFER_ASYNCHRONOUS,
+ PROBE_FORCE_SYNCHRONOUS,
+};
+
/**
* struct device_driver - The basic device driver structure
* @name: Name of the device driver.
* @owner: The module owner.
* @mod_name: Used for built-in modules.
* @suppress_bind_attrs: Disables bind/unbind via sysfs.
+ * @probe_type: Type of the probe (synchronous or asynchronous) to use.
* @of_match_table: The open firmware table.
* @acpi_match_table: The ACPI match table.
* @probe: Called to query the existence of a specific device,
const char *mod_name; /* used for built-in modules */
bool suppress_bind_attrs; /* disables bind/unbind via sysfs */
+ enum probe_type probe_type;
const struct of_device_id *of_match_table;
const struct acpi_device_id *acpi_match_table;
extern void device_release_driver(struct device *dev);
extern int __must_check device_attach(struct device *dev);
extern int __must_check driver_attach(struct device_driver *drv);
+extern void device_initial_probe(struct device *dev);
extern int __must_check device_reprobe(struct device *dev);
/*
bool sig_ok;
#endif
+ bool async_probe_requested;
+
/* symbols that will be GPL-only in the near future. */
const struct kernel_symbol *gpl_future_syms;
const unsigned long *gpl_future_crcs;
extern void print_modules(void);
+static inline bool module_requested_async_probing(struct module *module)
+{
+ return module && module->async_probe_requested;
+}
+
#else /* !CONFIG_MODULES... */
/* Given an address, look for it in the exception tables. */
static inline void print_modules(void)
{
}
+
+static inline bool module_requested_async_probing(struct module *module)
+{
+ return false;
+}
+
#endif /* CONFIG_MODULES */
#ifdef CONFIG_SYSFS
#define core_param(name, var, type, perm) \
param_check_##type(name, &(var)); \
__module_param_call("", name, ¶m_ops_##type, &var, perm, -1, 0)
+
+/**
+ * core_param_unsafe - same as core_param but taints kernel
+ */
+#define core_param_unsafe(name, var, type, perm) \
+ param_check_##type(name, &(var)); \
+ __module_param_call("", name, ¶m_ops_##type, &var, perm, \
+ -1, KERNEL_PARAM_FL_UNSAFE)
+
#endif /* !MODULE */
/**
unsigned num,
s16 level_min,
s16 level_max,
+ void *arg,
int (*unknown)(char *param, char *val,
- const char *doing));
+ const char *doing, void *arg));
/* Called by module remove. */
#ifdef CONFIG_SYSFS
early_param("loglevel", loglevel);
/* Change NUL term back to "=", to make "param" the whole string. */
-static int __init repair_env_string(char *param, char *val, const char *unused)
+static int __init repair_env_string(char *param, char *val,
+ const char *unused, void *arg)
{
if (val) {
/* param=val or param="val"? */
}
/* Anything after -- gets handed straight to init. */
-static int __init set_init_arg(char *param, char *val, const char *unused)
+static int __init set_init_arg(char *param, char *val,
+ const char *unused, void *arg)
{
unsigned int i;
if (panic_later)
return 0;
- repair_env_string(param, val, unused);
+ repair_env_string(param, val, unused, NULL);
for (i = 0; argv_init[i]; i++) {
if (i == MAX_INIT_ARGS) {
* Unknown boot options get handed to init, unless they look like
* unused parameters (modprobe will find them in /proc/cmdline).
*/
-static int __init unknown_bootoption(char *param, char *val, const char *unused)
+static int __init unknown_bootoption(char *param, char *val,
+ const char *unused, void *arg)
{
- repair_env_string(param, val, unused);
+ repair_env_string(param, val, unused, NULL);
/* Handle obsolete-style parameters */
if (obsolete_checksetup(param))
}
/* Check for early params. */
-static int __init do_early_param(char *param, char *val, const char *unused)
+static int __init do_early_param(char *param, char *val,
+ const char *unused, void *arg)
{
const struct obs_kernel_param *p;
void __init parse_early_options(char *cmdline)
{
- parse_args("early options", cmdline, NULL, 0, 0, 0, do_early_param);
+ parse_args("early options", cmdline, NULL, 0, 0, 0, NULL,
+ do_early_param);
}
/* Arch code calls this early on, or if not, just before other parsing. */
after_dashes = parse_args("Booting kernel",
static_command_line, __start___param,
__stop___param - __start___param,
- -1, -1, &unknown_bootoption);
+ -1, -1, NULL, &unknown_bootoption);
if (!IS_ERR_OR_NULL(after_dashes))
parse_args("Setting init args", after_dashes, NULL, 0, -1, -1,
- set_init_arg);
+ NULL, set_init_arg);
jump_label_init();
initcall_command_line, __start___param,
__stop___param - __start___param,
level, level,
- &repair_env_string);
+ NULL, &repair_env_string);
for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++)
do_one_initcall(*fn);
*
* http://thread.gmane.org/gmane.linux.kernel/1420814
*/
- if (current->flags & PF_USED_ASYNC)
+ if (!mod->async_probe_requested && (current->flags & PF_USED_ASYNC))
async_synchronize_full();
mutex_lock(&module_mutex);
return err;
}
-static int unknown_module_param_cb(char *param, char *val, const char *modname)
+static int unknown_module_param_cb(char *param, char *val, const char *modname,
+ void *arg)
{
+ struct module *mod = arg;
+ int ret;
+
+ if (strcmp(param, "async_probe") == 0) {
+ mod->async_probe_requested = true;
+ return 0;
+ }
+
/* Check for magic 'dyndbg' arg */
- int ret = ddebug_dyndbg_module_param_cb(param, val, modname);
+ ret = ddebug_dyndbg_module_param_cb(param, val, modname);
if (ret != 0)
pr_warn("%s: unknown parameter '%s' ignored\n", modname, param);
return 0;
/* Module is ready to execute: parsing args may do that. */
after_dashes = parse_args(mod->name, mod->args, mod->kp, mod->num_kp,
- -32768, 32767, unknown_module_param_cb);
+ -32768, 32767, NULL,
+ unknown_module_param_cb);
if (IS_ERR(after_dashes)) {
err = PTR_ERR(after_dashes);
goto bug_cleanup;
unsigned num_params,
s16 min_level,
s16 max_level,
+ void *arg,
int (*handle_unknown)(char *param, char *val,
- const char *doing))
+ const char *doing, void *arg))
{
unsigned int i;
int err;
if (handle_unknown) {
pr_debug("doing %s: %s='%s'\n", doing, param, val);
- return handle_unknown(param, val, doing);
+ return handle_unknown(param, val, doing, arg);
}
pr_debug("Unknown argument '%s'\n", param);
unsigned num,
s16 min_level,
s16 max_level,
- int (*unknown)(char *param, char *val, const char *doing))
+ void *arg,
+ int (*unknown)(char *param, char *val,
+ const char *doing, void *arg))
{
char *param, *val;
return args;
irq_was_disabled = irqs_disabled();
ret = parse_one(param, val, doing, params, num,
- min_level, max_level, unknown);
+ min_level, max_level, arg, unknown);
if (irq_was_disabled && !irqs_disabled())
pr_warn("%s: option '%s' enabled irq's!\n",
doing, param);
/* handle both dyndbg and $module.dyndbg params at boot */
static int ddebug_dyndbg_boot_param_cb(char *param, char *val,
- const char *unused)
+ const char *unused, void *arg)
{
vpr_info("%s=\"%s\"\n", param, val);
return ddebug_dyndbg_param_cb(param, val, NULL, 0);
*/
cmdline = kstrdup(saved_command_line, GFP_KERNEL);
parse_args("dyndbg params", cmdline, NULL,
- 0, 0, 0, &ddebug_dyndbg_boot_param_cb);
+ 0, 0, 0, NULL, &ddebug_dyndbg_boot_param_cb);
kfree(cmdline);
return 0;
projects / karo-tx-linux.git / commitdiff