From 78fc485622240f812ad95bba5a2165f4e7c77b54 Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Fri, 26 Aug 2011 13:06:33 +0530 Subject: [PATCH] ath6kl: Add debugfs file entry to dump credit distribution stats It would be at /ieee80211/phyX/ath6kl/credit_dist_stats. Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/debug.c | 69 +++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c index 5a082c0f34cd..2b462876cec1 100644 --- a/drivers/net/wireless/ath/ath6kl/debug.c +++ b/drivers/net/wireless/ath/ath6kl/debug.c @@ -290,6 +290,72 @@ static const struct file_operations fops_tgt_stats = { .llseek = default_llseek, }; +#define print_credit_info(fmt_str, ep_list_field) \ + (len += scnprintf(buf + len, buf_len - len, fmt_str, \ + ep_list->ep_list_field)) +#define CREDIT_INFO_DISPLAY_STRING_LEN 200 +#define CREDIT_INFO_LEN 128 + +static ssize_t read_file_credit_dist_stats(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath6kl *ar = file->private_data; + struct htc_target *target = ar->htc_target; + struct htc_endpoint_credit_dist *ep_list; + char *buf; + unsigned int buf_len, len = 0; + ssize_t ret_cnt; + + buf_len = CREDIT_INFO_DISPLAY_STRING_LEN + + get_queue_depth(&target->cred_dist_list) * CREDIT_INFO_LEN; + buf = kzalloc(buf_len, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", + "Total Avail Credits: ", + target->cred_dist_cntxt->total_avail_credits); + len += scnprintf(buf + len, buf_len - len, "%25s%5d\n", + "Free credits :", + target->cred_dist_cntxt->cur_free_credits); + + len += scnprintf(buf + len, buf_len - len, + " Epid Flags Cred_norm Cred_min Credits Cred_assngd" + " Seek_cred Cred_sz Cred_per_msg Cred_to_dist" + " qdepth\n"); + + list_for_each_entry(ep_list, &target->cred_dist_list, list) { + print_credit_info(" %2d", endpoint); + print_credit_info("%10x", dist_flags); + print_credit_info("%8d", cred_norm); + print_credit_info("%9d", cred_min); + print_credit_info("%9d", credits); + print_credit_info("%10d", cred_assngd); + print_credit_info("%13d", seek_cred); + print_credit_info("%12d", cred_sz); + print_credit_info("%9d", cred_per_msg); + print_credit_info("%14d", cred_to_dist); + len += scnprintf(buf + len, buf_len - len, "%12d\n", + get_queue_depth(&((struct htc_endpoint *) + ep_list->htc_rsvd)->txq)); + } + + if (len > buf_len) + len = buf_len; + + ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + return ret_cnt; +} + +static const struct file_operations fops_credit_dist_stats = { + .read = read_file_credit_dist_stats, + .open = ath6kl_debugfs_open, + .owner = THIS_MODULE, + .llseek = default_llseek, +}; + int ath6kl_debug_init(struct ath6kl *ar) { ar->debugfs_phy = debugfs_create_dir("ath6kl", @@ -300,6 +366,9 @@ int ath6kl_debug_init(struct ath6kl *ar) debugfs_create_file("tgt_stats", S_IRUSR, ar->debugfs_phy, ar, &fops_tgt_stats); + debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar, + &fops_credit_dist_stats); + return 0; } #endif -- 2.30.2