diff options
author | Sven Eckelmann <sven@narfation.org> | 2020-08-17 13:42:29 +0200 |
---|---|---|
committer | Simon Wunderlich <sw@simonwunderlich.de> | 2020-12-04 08:40:52 +0100 |
commit | aff6f5a68b921aa8d49c9a50e0115a5b099732ef (patch) | |
tree | f4b3adaec8e9c0e906bbb2201150f7dcf6170fde /net/batman-adv/log.c | |
parent | 76e9f276285de08695c62c4cf0caa5ad5b5cb9a3 (diff) | |
download | linux-aff6f5a68b921aa8d49c9a50e0115a5b099732ef.tar.bz2 |
batman-adv: Drop deprecated debugfs support
The debugfs support in batman-adv was marked as deprecated by the commit
00caf6a2b318 ("batman-adv: Mark debugfs functionality as deprecated") and
scheduled for removal in 2021.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/log.c')
-rw-r--r-- | net/batman-adv/log.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c index c0ca5fbe5b08..b7e9923b11a2 100644 --- a/net/batman-adv/log.c +++ b/net/batman-adv/log.c @@ -7,214 +7,10 @@ #include "log.h" #include "main.h" -#include <linux/compiler.h> -#include <linux/debugfs.h> -#include <linux/errno.h> -#include <linux/eventpoll.h> -#include <linux/export.h> -#include <linux/fcntl.h> -#include <linux/fs.h> -#include <linux/gfp.h> -#include <linux/jiffies.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/poll.h> -#include <linux/sched.h> /* for linux/wait.h */ -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/stddef.h> -#include <linux/types.h> -#include <linux/uaccess.h> -#include <linux/wait.h> #include <stdarg.h> -#include "debugfs.h" #include "trace.h" -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - -#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1) - -static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN; - -static char *batadv_log_char_addr(struct batadv_priv_debug_log *debug_log, - size_t idx) -{ - return &debug_log->log_buff[idx & BATADV_LOG_BUFF_MASK]; -} - -static void batadv_emit_log_char(struct batadv_priv_debug_log *debug_log, - char c) -{ - char *char_addr; - - char_addr = batadv_log_char_addr(debug_log, debug_log->log_end); - *char_addr = c; - debug_log->log_end++; - - if (debug_log->log_end - debug_log->log_start > batadv_log_buff_len) - debug_log->log_start = debug_log->log_end - batadv_log_buff_len; -} - -__printf(2, 3) -static int batadv_fdebug_log(struct batadv_priv_debug_log *debug_log, - const char *fmt, ...) -{ - va_list args; - static char debug_log_buf[256]; - char *p; - - if (!debug_log) - return 0; - - spin_lock_bh(&debug_log->lock); - va_start(args, fmt); - vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, args); - va_end(args); - - for (p = debug_log_buf; *p != 0; p++) - batadv_emit_log_char(debug_log, *p); - - spin_unlock_bh(&debug_log->lock); - - wake_up(&debug_log->queue_wait); - - return 0; -} - -static int batadv_log_open(struct inode *inode, struct file *file) -{ - if (!try_module_get(THIS_MODULE)) - return -EBUSY; - - batadv_debugfs_deprecated(file, - "Use tracepoint batadv:batadv_dbg instead\n"); - - stream_open(inode, file); - file->private_data = inode->i_private; - return 0; -} - -static int batadv_log_release(struct inode *inode, struct file *file) -{ - module_put(THIS_MODULE); - return 0; -} - -static bool batadv_log_empty(struct batadv_priv_debug_log *debug_log) -{ - return !(debug_log->log_start - debug_log->log_end); -} - -static ssize_t batadv_log_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct batadv_priv *bat_priv = file->private_data; - struct batadv_priv_debug_log *debug_log = bat_priv->debug_log; - int error, i = 0; - char *char_addr; - char c; - - if ((file->f_flags & O_NONBLOCK) && batadv_log_empty(debug_log)) - return -EAGAIN; - - if (!buf) - return -EINVAL; - - if (count == 0) - return 0; - - if (!access_ok(buf, count)) - return -EFAULT; - - error = wait_event_interruptible(debug_log->queue_wait, - (!batadv_log_empty(debug_log))); - - if (error) - return error; - - spin_lock_bh(&debug_log->lock); - - while ((!error) && (i < count) && - (debug_log->log_start != debug_log->log_end)) { - char_addr = batadv_log_char_addr(debug_log, - debug_log->log_start); - c = *char_addr; - - debug_log->log_start++; - - spin_unlock_bh(&debug_log->lock); - - error = __put_user(c, buf); - - spin_lock_bh(&debug_log->lock); - - buf++; - i++; - } - - spin_unlock_bh(&debug_log->lock); - - if (!error) - return i; - - return error; -} - -static __poll_t batadv_log_poll(struct file *file, poll_table *wait) -{ - struct batadv_priv *bat_priv = file->private_data; - struct batadv_priv_debug_log *debug_log = bat_priv->debug_log; - - poll_wait(file, &debug_log->queue_wait, wait); - - if (!batadv_log_empty(debug_log)) - return EPOLLIN | EPOLLRDNORM; - - return 0; -} - -static const struct file_operations batadv_log_fops = { - .open = batadv_log_open, - .release = batadv_log_release, - .read = batadv_log_read, - .poll = batadv_log_poll, - .llseek = no_llseek, - .owner = THIS_MODULE, -}; - -/** - * batadv_debug_log_setup() - Initialize debug log - * @bat_priv: the bat priv with all the soft interface information - * - * Return: 0 on success or negative error number in case of failure - */ -int batadv_debug_log_setup(struct batadv_priv *bat_priv) -{ - bat_priv->debug_log = kzalloc(sizeof(*bat_priv->debug_log), GFP_ATOMIC); - if (!bat_priv->debug_log) - return -ENOMEM; - - spin_lock_init(&bat_priv->debug_log->lock); - init_waitqueue_head(&bat_priv->debug_log->queue_wait); - - debugfs_create_file("log", 0400, bat_priv->debug_dir, bat_priv, - &batadv_log_fops); - return 0; -} - -/** - * batadv_debug_log_cleanup() - Destroy debug log - * @bat_priv: the bat priv with all the soft interface information - */ -void batadv_debug_log_cleanup(struct batadv_priv *bat_priv) -{ - kfree(bat_priv->debug_log); - bat_priv->debug_log = NULL; -} - -#endif /* CONFIG_BATMAN_ADV_DEBUGFS */ - /** * batadv_debug_log() - Add debug log entry * @bat_priv: the bat priv with all the soft interface information @@ -232,11 +28,6 @@ int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) vaf.fmt = fmt; vaf.va = &args; -#ifdef CONFIG_BATMAN_ADV_DEBUGFS - batadv_fdebug_log(bat_priv->debug_log, "[%10u] %pV", - jiffies_to_msecs(jiffies), &vaf); -#endif - trace_batadv_dbg(bat_priv, &vaf); va_end(args); |