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Patch from Smadar Gonen <smadar.gn@gmail.com>

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Implements some useful scst_user statistic in /proc



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@967 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2009-07-21 17:47:05 +00:00
parent 6903b1d7ae
commit 3048e684a3
1 changed files with 43 additions and 0 deletions
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43
scst/src/dev_handlers/scst_user.c
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@@ -178,6 +178,8 @@ static unsigned int dev_user_poll(struct file *filp, poll_table *wait);
static long dev_user_ioctl(struct file *file, unsigned int cmd,
unsigned long arg);
static int dev_user_release(struct inode *inode, struct file *file);
static int dev_user_read_proc(struct seq_file *seq,
struct scst_dev_type *dev_type);
/** Data **/
@@ -3056,6 +3058,7 @@ static int dev_usr_parse(struct scst_cmd *cmd)
.name = DEV_USER_NAME, \
.type = -1, \
.parse = dev_usr_parse, \
.read_proc = dev_user_read_proc, \
}
static struct scst_dev_type dev_user_devtype = USR_TYPE;
@@ -3185,6 +3188,46 @@ out:
return res;
}
/*
* Called when a file in the /proc/scsi_tgt/scst_user is read
*/
static int dev_user_read_proc(struct seq_file *seq, struct scst_dev_type *dev_type)
{
int res = 0;
struct scst_user_dev *dev;
unsigned long flags;
TRACE_ENTRY();
spin_lock(&dev_list_lock);
list_for_each_entry(dev, &dev_list, dev_list_entry) {
int i;
seq_printf(seq, "Device %s commands:\n", dev->name);
spin_lock_irqsave(&dev->cmd_lists.cmd_list_lock, flags);
for (i = 0; i < (int)ARRAY_SIZE(dev->ucmd_hash); i++) {
struct list_head *head = &dev->ucmd_hash[i];
struct scst_user_cmd *ucmd;
list_for_each_entry(ucmd, head, hash_list_entry) {
seq_printf(seq, "ucmd %p (state %x, ref %d), "
"sent_to_user %d, seen_by_user %d, "
"aborted %d, jammed %d, scst_cmd %p\n",
ucmd, ucmd->state,
atomic_read(&ucmd->ucmd_ref),
ucmd->sent_to_user, ucmd->seen_by_user,
ucmd->aborted, ucmd->jammed, ucmd->cmd);
}
}
spin_unlock_irqrestore(&dev->cmd_lists.cmd_list_lock, flags);
}
spin_unlock(&dev_list_lock);
TRACE_EXIT_RES(res);
return res;
}
static inline int test_cleanup_list(void)
{
int res = !list_empty(&cleanup_list) ||