#include <linux/list.h>
#include <linux/sysctl.h>
-#include <linux/proc_fs.h>
+#include <linux/debugfs.h>
#include <asm/div64.h>
#define DEBUG_SUBSYSTEM S_LNET
#include <lnet/lib-lnet.h>
#include "tracefile.h"
-#ifdef CONFIG_SYSCTL
-static struct ctl_table_header *lnet_table_header;
-#endif
+static struct dentry *lnet_debugfs_root;
static DECLARE_RWSEM(ioctl_list_sem);
static LIST_HEAD(ioctl_list);
RETURN(err);
}
-int
-lprocfs_call_handler(void *data, int write, loff_t *ppos,
- void __user *buffer, size_t *lenp,
- int (*handler)(void *data, int write, loff_t pos,
- void __user *buffer, int len))
+int lprocfs_call_handler(void *data, int write, loff_t *ppos,
+ void __user *buffer, size_t *lenp,
+ int (*handler)(void *data, int write, loff_t pos,
+ void __user *buffer, int len))
{
int rc = handler(data, write, *ppos, buffer, *lenp);
return rc;
}
-static int
-proc_dobitmasks(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int proc_dobitmasks(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
__proc_dobitmasks);
return cfs_trace_dump_debug_buffer_usrstr(buffer, nob);
}
-static int
-proc_dump_kernel(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int proc_dump_kernel(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
__proc_dump_kernel);
return cfs_trace_daemon_command_usrstr(buffer, nob);
}
-static int
-proc_daemon_file(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int proc_daemon_file(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
__proc_daemon_file);
}
-static int __proc_debug_mb(void *data, int write,
- loff_t pos, void __user *buffer, int nob)
-{
- if (!write) {
- char tmpstr[32];
- int len = snprintf(tmpstr, sizeof(tmpstr), "%d",
- cfs_trace_get_debug_mb());
-
- if (pos >= len)
- return 0;
-
- return cfs_trace_copyout_string(buffer, nob, tmpstr + pos,
- "\n");
- }
-
- return cfs_trace_set_debug_mb_usrstr(buffer, nob);
-}
-
-static int
-proc_debug_mb(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
-{
- return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
- __proc_debug_mb);
-}
-
-static int
-proc_console_max_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc, max_delay_cs;
- struct ctl_table dummy = *table;
- cfs_duration_t d;
-
- dummy.data = &max_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- max_delay_cs = cfs_duration_sec(libcfs_console_max_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- max_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (max_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(max_delay_cs) / 100;
- if (d == 0 || d < libcfs_console_min_delay)
- return -EINVAL;
- libcfs_console_max_delay = d;
-
- return rc;
-}
-
-static int
-proc_console_min_delay_cs(struct ctl_table *table, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
-{
- int rc, min_delay_cs;
- struct ctl_table dummy = *table;
- cfs_duration_t d;
-
- dummy.data = &min_delay_cs;
- dummy.proc_handler = &proc_dointvec;
-
- if (!write) { /* read */
- min_delay_cs = cfs_duration_sec(libcfs_console_min_delay * 100);
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- return rc;
- }
-
- /* write */
- min_delay_cs = 0;
- rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
- if (rc < 0)
- return rc;
- if (min_delay_cs <= 0)
- return -EINVAL;
-
- d = cfs_time_seconds(min_delay_cs) / 100;
- if (d == 0 || d > libcfs_console_max_delay)
- return -EINVAL;
- libcfs_console_min_delay = d;
-
- 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)
+static int libcfs_force_lbug(struct ctl_table *table, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
{
if (write)
LBUG();
return 0;
}
-static int
-proc_fail_loc(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int proc_fail_loc(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
int rc;
long old_fail_loc = cfs_fail_loc;
return rc;
}
-static int
-proc_cpt_table(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int proc_cpt_table(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
__proc_cpt_table);
return rc;
}
-static int
-proc_cpt_distance(struct ctl_table *table, int write, void __user *buffer,
- size_t *lenp, loff_t *ppos)
+static int proc_cpt_distance(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
{
return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
__proc_cpt_distance);
}
static struct ctl_table lnet_table[] = {
- /*
- * NB No .strategy entries have been provided since sysctl(8) prefers
- * to go via /proc for portability.
- */
{
INIT_CTL_NAME
.procname = "debug",
},
{
INIT_CTL_NAME
- .procname = "console_ratelimit",
- .data = &libcfs_console_ratelimit,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- },
- {
- INIT_CTL_NAME
- .procname = "console_max_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_max_delay_cs
- },
- {
- INIT_CTL_NAME
- .procname = "console_min_delay_centisecs",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_min_delay_cs
- },
- {
- INIT_CTL_NAME
- .procname = "console_backoff",
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_console_backoff
- },
- {
- INIT_CTL_NAME
- .procname = "debug_path",
- .data = libcfs_debug_file_path_arr,
- .maxlen = sizeof(libcfs_debug_file_path_arr),
- .mode = 0644,
- .proc_handler = &proc_dostring,
- },
- {
- INIT_CTL_NAME
.procname = "cpu_partition_table",
.maxlen = 128,
.mode = 0444,
},
{
INIT_CTL_NAME
- .procname = "panic_on_lbug",
- .data = &libcfs_panic_on_lbug,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- INIT_CTL_NAME
.procname = "dump_kernel",
.maxlen = 256,
.mode = 0200,
},
{
INIT_CTL_NAME
- .procname = "debug_mb",
- .mode = 0644,
- .proc_handler = &proc_debug_mb,
- },
- {
- INIT_CTL_NAME
.procname = "watchdog_ratelimit",
.data = &libcfs_watchdog_ratelimit,
.maxlen = sizeof(int),
}
};
-#ifdef CONFIG_SYSCTL
-static struct ctl_table top_table[] = {
- {
- INIT_CTL_NAME
- .procname = "lnet",
- .mode = 0555,
- .data = NULL,
- .maxlen = 0,
- .child = lnet_table,
- },
- { 0 }
+static const struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
+ { .name = "console_ratelimit",
+ .target = "../../../module/libcfs/parameters/libcfs_console_ratelimit" },
+ { .name = "debug_path",
+ .target = "../../../module/libcfs/parameters/libcfs_debug_file_path" },
+ { .name = "panic_on_lbug",
+ .target = "../../../module/libcfs/parameters/libcfs_panic_on_lbug" },
+ { .name = "console_backoff",
+ .target = "../../../module/libcfs/parameters/libcfs_console_backoff" },
+ { .name = "debug_mb",
+ .target = "../../../module/libcfs/parameters/libcfs_debug_mb" },
+ { .name = "console_min_delay_centisecs",
+ .target = "../../../module/libcfs/parameters/libcfs_console_min_delay" },
+ { .name = "console_max_delay_centisecs",
+ .target = "../../../module/libcfs/parameters/libcfs_console_max_delay" },
+ { .name = NULL },
};
-#endif
-static int insert_proc(void)
+static ssize_t lnet_debugfs_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
{
-#ifdef CONFIG_SYSCTL
- if (lnet_table_header == NULL)
- lnet_table_header = register_sysctl_table(top_table);
-#endif
- return 0;
+ struct ctl_table *table = filp->private_data;
+ ssize_t rc;
+
+ rc = table->proc_handler(table, 0, buf, &count, ppos);
+ if (!rc)
+ rc = count;
+
+ return rc;
+}
+
+static ssize_t lnet_debugfs_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ctl_table *table = filp->private_data;
+ ssize_t rc;
+
+ rc = table->proc_handler(table, 1, (void __user *)buf, &count, ppos);
+ if (!rc)
+ rc = count;
+
+ return rc;
+}
+
+static const struct file_operations lnet_debugfs_file_operations_rw = {
+ .open = simple_open,
+ .read = lnet_debugfs_read,
+ .write = lnet_debugfs_write,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations lnet_debugfs_file_operations_ro = {
+ .open = simple_open,
+ .read = lnet_debugfs_read,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations lnet_debugfs_file_operations_wo = {
+ .open = simple_open,
+ .write = lnet_debugfs_write,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations *lnet_debugfs_fops_select(umode_t mode)
+{
+ if (!(mode & S_IWUGO))
+ return &lnet_debugfs_file_operations_ro;
+
+ if (!(mode & S_IRUGO))
+ return &lnet_debugfs_file_operations_wo;
+
+ return &lnet_debugfs_file_operations_rw;
+}
+
+void lnet_insert_debugfs(struct ctl_table *table,
+ const struct lnet_debugfs_symlink_def *symlinks)
+{
+ if (!lnet_debugfs_root)
+ lnet_debugfs_root = debugfs_create_dir("lnet", NULL);
+
+ /* Even if we cannot create, just ignore it altogether) */
+ if (IS_ERR_OR_NULL(lnet_debugfs_root))
+ return;
+
+ /* We don't save the dentry returned in next two calls, because
+ * we don't call debugfs_remove() but rather remove_recursive()
+ */
+ for (; table && table->procname; table++)
+ debugfs_create_file(table->procname, table->mode,
+ lnet_debugfs_root, table,
+ lnet_debugfs_fops_select(table->mode));
+
+ for (; symlinks && symlinks->name; symlinks++)
+ debugfs_create_symlink(symlinks->name, lnet_debugfs_root,
+ symlinks->target);
}
+EXPORT_SYMBOL_GPL(lnet_insert_debugfs);
-static void remove_proc(void)
+static void lnet_remove_debugfs(void)
{
-#ifdef CONFIG_SYSCTL
- if (lnet_table_header != NULL)
- unregister_sysctl_table(lnet_table_header);
+ debugfs_remove_recursive(lnet_debugfs_root);
- lnet_table_header = NULL;
-#endif
+ lnet_debugfs_root = NULL;
}
static int __init libcfs_init(void)
goto cleanup_wi;
}
-
- rc = insert_proc();
- if (rc) {
- CERROR("insert_proc: error %d\n", rc);
- goto cleanup_crypto;
- }
+ lnet_insert_debugfs(lnet_table, lnet_debugfs_symlinks);
CDEBUG (D_OTHER, "portals setup OK\n");
return 0;
-cleanup_crypto:
- cfs_crypto_unregister();
cleanup_wi:
cfs_wi_shutdown();
cleanup_deregister:
{
int rc;
- remove_proc();
+ lnet_remove_debugfs();
CDEBUG(D_MALLOC, "before Portals cleanup: kmem %d\n",
atomic_read(&libcfs_kmemory));
git://git.whamcloud.com / fs / lustre-release.git / blobdiff