static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct klp_patch *patch;
int ret;
bool val;
ret = kstrtobool(buf, &val);
if (ret)
return ret;
if (!val)
return count;
mutex_lock(&klp_mutex);
patch = container_of(kobj, struct klp_patch, kobj);
if (patch != klp_transition_patch) {
mutex_unlock(&klp_mutex);
return -EINVAL;
}
klp_force_transition();
mutex_unlock(&klp_mutex);
return count;
}
static ssize_t qeth_dev_performance_stats_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct qeth_card *card = dev_get_drvdata(dev);
struct qeth_qdio_out_q *queue;
unsigned int i;
bool reset;
int rc;
if (!card)
return -EINVAL;
rc = kstrtobool(buf, &reset);
if (rc)
return rc;
if (reset) {
memset(&card->stats, 0, sizeof(card->stats));
for (i = 0; i < card->qdio.no_out_queues; i++) {
queue = card->qdio.out_qs[i];
if (!queue)
break;
memset(&queue->stats, 0, sizeof(queue->stats));
}
}
return count;
}
static ssize_t store_chkcfg(struct device_driver *drv, const char *buf,
size_t count)
{
int ret;
ret = kstrtobool(buf, &altera_cvp_chkcfg);
if (ret)
return ret;
return count;
}
/*
* Since "base" would be a nonsense argument, this open-codes the
* _from_user helper instead of using the helper macro below.
*/
int kstrtobool_from_user(const char __user *s, size_t count, bool *res)
{
/* Longest string needed to differentiate, newline, terminator */
char buf[4];
count = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, s, count))
return -EFAULT;
buf[count] = '\0';
return kstrtobool(buf, res);
}
static int __init parse_disable_radix(char *p)
{
bool val;
if (strlen(p) == 0)
val = true;
else if (kstrtobool(p, &val))
return -EINVAL;
disable_radix = val;
return 0;
}
static ssize_t enabled_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct klp_patch *patch;
int ret;
bool enabled;
ret = kstrtobool(buf, &enabled);
if (ret)
return ret;
patch = container_of(kobj, struct klp_patch, kobj);
mutex_lock(&klp_mutex);
if (!klp_is_patch_registered(patch)) {
/*
* Module with the patch could either disappear meanwhile or is
* not properly initialized yet.
*/
ret = -EINVAL;
goto err;
}
if (patch->enabled == enabled) {
/* already in requested state */
ret = -EINVAL;
goto err;
}
if (patch == klp_transition_patch) {
klp_reverse_transition();
} else if (enabled) {
ret = __klp_enable_patch(patch);
if (ret)
goto err;
} else {
ret = __klp_disable_patch(patch);
if (ret)
goto err;
}
mutex_unlock(&klp_mutex);
return count;
err:
mutex_unlock(&klp_mutex);
return ret;
}
static int __init nobp_setup_early(char *str)
{
bool enabled;
int rc;
rc = kstrtobool(str, &enabled);
if (rc)
return rc;
if (enabled && test_facility(82)) {
/*
* The user explicitely requested nobp=1, enable it and
* disable the expoline support.
*/
__set_facility(82, S390_lowcore.alt_stfle_fac_list);
if (IS_ENABLED(CONFIG_EXPOLINE))
nospec_disable = 1;
} else {
__clear_facility(82, S390_lowcore.alt_stfle_fac_list);
}
return 0;
}
static int __init setup_psi(char *str)
{
return kstrtobool(str, &psi_enable) == 0;
}
/*
* Enable / Disable high resolution mode
*/
static int __init setup_hrtimer_hres(char *str)
{
return (kstrtobool(str, &hrtimer_hres_enabled) == 0);
}
/*
* Enable/disable cede_offline when available.
*/
static int __init setup_cede_offline(char *str)
{
return (kstrtobool(str, &cede_offline_enabled) == 0);
}
static int __init rtasmsgs_setup(char *str)
{
return (kstrtobool(str, &full_rtas_msgs) == 0);
}
static int __init early_parse_stp(char *p)
{
return kstrtobool(p, &stp_online);
}