From 473a4084e19e3fe4ad11ff7bdb7552d0b41cd6f1 Mon Sep 17 00:00:00 2001 From: Maharaja Kennadyrajan Date: Wed, 27 Feb 2019 16:54:42 +0530 Subject: ath10k: Added support to reset HTT stats in debugfs Reset HTT stats helps to get the aggregated HTT stats via tracing and also we can clear the accumulated HTT stats with this debugfs file. Signed-off-by: Maharaja Kennadyrajan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/debug.c | 43 ++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) (limited to 'drivers/net/wireless/ath/ath10k/debug.c') diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c index 2da8611778a2..f828fd810270 100644 --- a/drivers/net/wireless/ath/ath10k/debug.c +++ b/drivers/net/wireless/ath/ath10k/debug.c @@ -873,7 +873,7 @@ static int ath10k_debug_htt_stats_req(struct ath10k *ar) cookie = get_jiffies_64(); ret = ath10k_htt_h2t_stats_req(&ar->htt, ar->debug.htt_stats_mask, - cookie); + ar->debug.reset_htt_stats, cookie); if (ret) { ath10k_warn(ar, "failed to send htt stats request: %d\n", ret); return ret; @@ -2469,6 +2469,44 @@ static const struct file_operations fops_ps_state_enable = { .llseek = default_llseek, }; +static ssize_t ath10k_write_reset_htt_stats(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath10k *ar = file->private_data; + unsigned long reset; + int ret; + + ret = kstrtoul_from_user(user_buf, count, 0, &reset); + if (ret) + return ret; + + if (reset == 0 || reset > 0x1ffff) + return -EINVAL; + + mutex_lock(&ar->conf_mutex); + + ar->debug.reset_htt_stats = reset; + + ret = ath10k_debug_htt_stats_req(ar); + if (ret) + goto out; + + ar->debug.reset_htt_stats = 0; + ret = count; + +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static const struct file_operations fops_reset_htt_stats = { + .write = ath10k_write_reset_htt_stats, + .owner = THIS_MODULE, + .open = simple_open, + .llseek = default_llseek, +}; + int ath10k_debug_create(struct ath10k *ar) { ar->debug.cal_data = vzalloc(ATH10K_DEBUG_CAL_DATA_LEN); @@ -2609,6 +2647,9 @@ int ath10k_debug_register(struct ath10k *ar) debugfs_create_file("ps_state_enable", 0600, ar->debug.debugfs_phy, ar, &fops_ps_state_enable); + debugfs_create_file("reset_htt_stats", 0200, ar->debug.debugfs_phy, ar, + &fops_reset_htt_stats); + return 0; } -- cgit v1.2.3