linux-kernel - [PATCH v2 fs/proc/bootconfig 1/2] fs/proc: remove redundant comments from /proc/bootconfig

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Message-Id: <20240409044358.1156477-1-paulmck@kernel.org>
Date: Mon,  8 Apr 2024 21:43:57 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Cc: Zhenhua Huang <quic_zhenhuah@...cinc.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	"Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH v2 fs/proc/bootconfig 1/2] fs/proc: remove redundant comments from /proc/bootconfig

From: Zhenhua Huang <quic_zhenhuah@...cinc.com>

commit 717c7c894d4b ("fs/proc: Add boot loader arguments as comment to
/proc/bootconfig") adds bootloader argument comments into /proc/bootconfig.

/proc/bootconfig shows boot_command_line[] multiple times following
every xbc key value pair, that's duplicated and not necessary.
Remove redundant ones.

Output before and after the fix is like:
key1 = value1
*bootloader argument comments*
key2 = value2
*bootloader argument comments*
key3 = value3
*bootloader argument comments*
..

key1 = value1
key2 = value2
key3 = value3
*bootloader argument comments*
..

Fixes: 717c7c894d4b ("fs/proc: Add boot loader arguments as comment to /proc/bootconfig")
Signed-off-by: Zhenhua Huang <quic_zhenhuah@...cinc.com>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
Cc: <linux-trace-kernel@...r.kernel.org>
Cc: <linux-fsdevel@...r.kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@...nel.org>
---
 fs/proc/bootconfig.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/proc/bootconfig.c b/fs/proc/bootconfig.c
index 902b326e1e560..e5635a6b127b0 100644
--- a/fs/proc/bootconfig.c
+++ b/fs/proc/bootconfig.c
@@ -62,12 +62,12 @@ static int __init copy_xbc_key_value_list(char *dst, size_t size)
 				break;
 			dst += ret;
 		}
-		if (ret >= 0 && boot_command_line[0]) {
-			ret = snprintf(dst, rest(dst, end), "# Parameters from bootloader:\n# %s\n",
-				       boot_command_line);
-			if (ret > 0)
-				dst += ret;
-		}
+	}
+	if (ret >= 0 && boot_command_line[0]) {
+		ret = snprintf(dst, rest(dst, end), "# Parameters from bootloader:\n# %s\n",
+			       boot_command_line);
+		if (ret > 0)
+			dst += ret;
 	}
 out:
 	kfree(key);
-- 
2.40.1