linux-kernel - [PATCH net-next 7/9] net: netconsole: extract release appending into separate function

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Message-ID: <20240903140757.2802765-8-leitao@debian.org>
Date: Tue,  3 Sep 2024 07:07:50 -0700
From: Breno Leitao <leitao@...ian.org>
To: kuba@...nel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	pabeni@...hat.com
Cc: thepacketgeek@...il.com,
	horms@...nel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	davej@...emonkey.org.uk,
	thevlad@...a.com,
	max@...sevol.com
Subject: [PATCH net-next 7/9] net: netconsole: extract release appending into separate function

Refactor the code by extracting the logic for appending the
release into the buffer into a separate function.

The goal is to reduce the size of send_msg_fragmented() and improve
code readability.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 drivers/net/netconsole.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index c8a23a7684e5..be23def330e9 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -1058,6 +1058,14 @@ static struct notifier_block netconsole_netdev_notifier = {
 	.notifier_call  = netconsole_netdev_event,
 };
 
+static void append_release(char *buf)
+{
+	const char *release;
+
+	release = init_utsname()->release;
+	scnprintf(buf, MAX_PRINT_CHUNK, "%s,", release);
+}
+
 static void send_msg_fragmented(struct netconsole_target *nt,
 				const char *msg,
 				const char *userdata,
@@ -1068,7 +1076,6 @@ static void send_msg_fragmented(struct netconsole_target *nt,
 	static char buf[MAX_PRINT_CHUNK]; /* protected by target_list_lock */
 	int offset = 0, userdata_len = 0;
 	const char *header, *msgbody;
-	const char *release;
 
 	if (userdata)
 		userdata_len = nt->userdata_length;
@@ -1087,10 +1094,8 @@ static void send_msg_fragmented(struct netconsole_target *nt,
 	 * Transfer multiple chunks with the following extra header.
 	 * "ncfrag=<byte-offset>/<total-bytes>"
 	 */
-	if (release_len) {
-		release = init_utsname()->release;
-		scnprintf(buf, MAX_PRINT_CHUNK, "%s,", release);
-	}
+	if (release_len)
+		append_release(buf);
 
 	/* Copy the header into the buffer */
 	memcpy(buf + release_len, header, header_len);
-- 
2.43.5