linux-kernel - [PATCH v2] mwifiex: debugfs: correct histogram spacing, formatting

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Date:   Mon, 3 Dec 2018 14:26:55 -0800
From:   Brian Norris <briannorris@...omium.org>
To:     Joe Perches <joe@...ches.com>, Kalle Valo <kvalo@...eaurora.org>
Cc:     Kalle Valo <kvalo@...eaurora.org>, linux-kernel@...r.kernel.org,
        Amitkumar Karwar <amitkarwar@...il.com>,
        Nishant Sarmukadam <nishants@...vell.com>,
        Ganapathi Bhat <gbhat@...vell.com>,
        Xinming Hu <huxinming820@...il.com>,
        linux-wireless@...r.kernel.org
Subject: [PATCH v2] mwifiex: debugfs: correct histogram spacing, formatting

Currently, snippets of this file look like:

rx rates (in Mbps): 0=1M   1=2M2=5.5M  3=11M   4=6M   5=9M  6=12M
7=18M  8=24M  9=36M  10=48M  11=54M12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)
44-53=MCS0-9(VHT:BW20)54-63=MCS0-9(VHT:BW40)64-73=MCS0-9(VHT:BW80)
...
noise_flr[--96dBm] = 22
noise_flr[--95dBm] = 149
noise_flr[--94dBm] = 9
noise_flr[--93dBm] = 2

We're missing some spaces, and we're adding a minus sign ('-') on values
that are already negative signed integers.

Signed-off-by: Brian Norris <briannorris@...omium.org>
---
v2:
 * combine strings to improve readability and save a tiny bit of code

On Mon, Dec 03, 2018 at 10:32:52AM -0800, Joe Perches wrote:
> It's be smaller object code and more intelligible source to use
> a single coalesced string with one sprintf

Sure, I can do that.

Here's a v2 that combines both sets of strings in that way. I'm not
resending the other patches, since they were only related in concept
(since I was referring to debugfs for implementing the nl80211 stuff),
but have no real dependency.

@Kalle: I can resend the others as a new series if that helps.

 drivers/net/wireless/marvell/mwifiex/debugfs.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/debugfs.c b/drivers/net/wireless/marvell/mwifiex/debugfs.c
index cce70252fd96..cbe4493b3266 100644
--- a/drivers/net/wireless/marvell/mwifiex/debugfs.c
+++ b/drivers/net/wireless/marvell/mwifiex/debugfs.c
@@ -273,15 +273,13 @@ mwifiex_histogram_read(struct file *file, char __user *ubuf,
 		     "total samples = %d\n",
 		     atomic_read(&phist_data->num_samples));
 
-	p += sprintf(p, "rx rates (in Mbps): 0=1M   1=2M");
-	p += sprintf(p, "2=5.5M  3=11M   4=6M   5=9M  6=12M\n");
-	p += sprintf(p, "7=18M  8=24M  9=36M  10=48M  11=54M");
-	p += sprintf(p, "12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
+	p += sprintf(p,
+		     "rx rates (in Mbps): 0=1M   1=2M 2=5.5M  3=11M   4=6M   5=9M  6=12M\n"
+		     "7=18M  8=24M  9=36M  10=48M  11=54M 12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
 
 	if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
-		p += sprintf(p, "44-53=MCS0-9(VHT:BW20)");
-		p += sprintf(p, "54-63=MCS0-9(VHT:BW40)");
-		p += sprintf(p, "64-73=MCS0-9(VHT:BW80)\n\n");
+		p += sprintf(p,
+			     "44-53=MCS0-9(VHT:BW20) 54-63=MCS0-9(VHT:BW40) 64-73=MCS0-9(VHT:BW80)\n\n");
 	} else {
 		p += sprintf(p, "\n");
 	}
@@ -310,7 +308,7 @@ mwifiex_histogram_read(struct file *file, char __user *ubuf,
 	for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) {
 		value = atomic_read(&phist_data->noise_flr[i]);
 		if (value)
-			p += sprintf(p, "noise_flr[-%02ddBm] = %d\n",
+			p += sprintf(p, "noise_flr[%02ddBm] = %d\n",
 				(int)(i-128), value);
 	}
 	for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) {
-- 
2.20.0.rc1.387.gf8505762e3-goog