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authorSven Eckelmann <sven@narfation.org>2020-08-17 13:42:29 +0200
committerSimon Wunderlich <sw@simonwunderlich.de>2020-12-04 08:40:52 +0100
commitaff6f5a68b921aa8d49c9a50e0115a5b099732ef (patch)
treef4b3adaec8e9c0e906bbb2201150f7dcf6170fde /net/batman-adv/log.c
parent76e9f276285de08695c62c4cf0caa5ad5b5cb9a3 (diff)
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.c209
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);