diff mbox series

[1/1] fs/proc: remove redudant comments from /proc/bootconfig

Message ID 1704190777-26430-1-git-send-email-quic_zhenhuah@quicinc.com (mailing list archive)
State Handled Elsewhere
Headers show
Series [1/1] fs/proc: remove redudant comments from /proc/bootconfig | expand

Commit Message

Zhenhua Huang Jan. 2, 2024, 10:19 a.m. UTC
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@quicinc.com>
---
 fs/proc/bootconfig.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

Steven Rostedt Jan. 3, 2024, 2:18 a.m. UTC | #1
On Tue, 2 Jan 2024 18:19:37 +0800
Zhenhua Huang <quic_zhenhuah@quicinc.com> wrote:

> 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@quicinc.com>

Nice catch.

Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>

-- Steve

> ---
>  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 902b326..e5635a6 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);
Paul E. McKenney Jan. 3, 2024, 9:58 p.m. UTC | #2
On Tue, Jan 02, 2024 at 06:19:37PM +0800, Zhenhua Huang wrote:
> 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@quicinc.com>

Good catch, and what I get for testing with only a single bootconfig
parameter.  :-/

Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.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 902b326..e5635a6 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);
> -- 
> 2.7.4
>
diff mbox series

Patch

diff --git a/fs/proc/bootconfig.c b/fs/proc/bootconfig.c
index 902b326..e5635a6 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);