Return-path: Received: from wolverine02.qualcomm.com ([199.106.114.251]:41815 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751306Ab1HZHgz (ORCPT ); Fri, 26 Aug 2011 03:36:55 -0400 From: Vasanthakumar Thiagarajan To: CC: , Subject: [PATCH V3 3/3] ath6kl: Add debugfs file entry to dump credit distribution stats Date: Fri, 26 Aug 2011 13:06:33 +0530 Message-ID: <1314344193-8468-3-git-send-email-vthiagar@qca.qualcomm.com> (sfid-20110826_093657_984453_1E7A3AD7) In-Reply-To: <1314344193-8468-1-git-send-email-vthiagar@qca.qualcomm.com> References: <1314344193-8468-1-git-send-email-vthiagar@qca.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: It would be at /ieee80211/phyX/ath6kl/credit_dist_stats. Signed-off-by: Vasanthakumar Thiagarajan --- drivers/net/wireless/ath/ath6kl/debug.c | 69 +++++++++++++++++++++++++++++++ 1 files changed, 69 insertions(+), 0 deletions(-) V3 - Define macros for magic numbers which are used as length - Add total available and free credits stats - Define and use a macro to print credit stats diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c index 5a082c0..1cc23c1 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 -- 1.7.0.4