MODULE_PARM_DESC(libcfs_console_min_delay, "Lustre kernel debug console min delay (jiffies)");
EXPORT_SYMBOL(libcfs_console_min_delay);
+static int param_set_uint_minmax(const char *val,
+ const struct kernel_param *kp,
+ unsigned int min, unsigned int max)
+{
+ unsigned int num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+ ret = kstrtouint(val, 0, &num);
+ if (ret == -EINVAL || num < min || num > max)
+ return -EINVAL;
+ *((unsigned int *)kp->arg) = num;
+ return 0;
+}
+
+static int param_set_uintpos(const char *val, const struct kernel_param *kp)
+{
+ return param_set_uint_minmax(val, kp, 1, -1);
+}
+
+static struct kernel_param_ops param_ops_uintpos = {
+ .set = param_set_uintpos,
+ .get = param_get_uint,
+};
+
+#define param_check_uintpos(name, p) \
+ __param_check(name, p, unsigned int)
+
unsigned int libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
-module_param(libcfs_console_backoff, uint, 0644);
+module_param(libcfs_console_backoff, uintpos, 0644);
MODULE_PARM_DESC(libcfs_console_backoff, "Lustre kernel debug console backoff factor");
EXPORT_SYMBOL(libcfs_console_backoff);
return rc;
}
-static int proc_console_backoff(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc, backoff;
- struct ctl_table dummy = *table;
-
- dummy.data = &backoff;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- backoff = libcfs_console_backoff;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- backoff = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (backoff <= 0)
- return -EINVAL;
-
- libcfs_console_backoff = backoff;
-
- return rc;
-}
-
static int libcfs_force_lbug(struct ctl_table *table, int write,
void __user *buffer,
size_t *lenp, loff_t *ppos)
.mode = 0644,
.proc_handler = &proc_console_min_delay_cs
},
- {
- .procname = "console_backoff",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_backoff
- },
-
{
.procname = "cpu_partition_table",
.maxlen = 128,
}
};
+struct lnet_debugfs_symlink_def {
+ char *name;
+ char *target;
+};
+
+struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
+ { "console_ratelimit",
+ "/sys/module/libcfs/parameters/libcfs_console_ratelimit"},
+ { "debug_path",
+ "/sys/module/libcfs/parameters/libcfs_debug_file_path"},
+ { "panic_on_lbug",
+ "/sys/module/libcfs/parameters/libcfs_panic_on_lbug"},
+ { "libcfs_console_backoff",
+ "/sys/module/libcfs/parameters/libcfs_console_backoff"},
+ {},
+};
+
static ssize_t lnet_debugfs_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
{
struct ctl_table *table;
struct dentry *entry;
+ struct lnet_debugfs_symlink_def *symlinks;
if (lnet_debugfs_root == NULL)
lnet_debugfs_root = debugfs_create_dir("lnet", NULL);
entry = debugfs_create_file(table->procname, table->mode,
lnet_debugfs_root, table,
&lnet_debugfs_file_operations);
+
+ for (symlinks = lnet_debugfs_symlinks; symlinks->name; symlinks++)
+ entry = debugfs_create_symlink(symlinks->name,
+ lnet_debugfs_root,
+ symlinks->target);
+
}
static void remove_debugfs(void)