netdev - Re: [PATCH V2] net/netlink: optimize seq_puts and seq_printf in af

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Date:   Thu, 3 May 2018 18:57:35 +0800
From:   YU Bo <tsu.yubo@...il.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     davem@...emloft.net, xiyou.wangcong@...il.com, yuzibode@....com,
        netdev@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH V2] net/netlink: optimize seq_puts and seq_printf in
 af_netlink.c

Hello,
On Thu, May 03, 2018 at 11:44:33AM +0200, Julia Lawall wrote:
>
>
>On Thu, 3 May 2018, YU Bo wrote:
>
>> Before the patch, the command `cat /proc/net/netlink` will output like:
>>
>> https://clbin.com/BojZv
>>
>> After the patch:
>>
>> https://clbin.com/lnu4L
>>
>> The optimization will make convenience for using `cat /proc/net/netlink`
>> But,The checkpatch will give a warning:
>>
>> WARNING: quoted string split across lines
>
>The interest of the checkpatch warning is that someone may want to grep
>for something that has actually been split over two lines.  If this is not
>an issue in your case and if there are good reasons for splitting the
>string, then you can ignore checkpatch.
Yes, the warning will be generated in original af_netlink.c and i dom't
think to split it is better.

Thank you!
>
>julia
>
>>
>> Signed-off-by: Bo YU <tsu.yubo@...il.com>
>> ---
>> Changes in v2:
>> Do not break the indentation of the code line
>> ---
>> net/netlink/af_netlink.c | 6 +++---
>> 1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
>> index 55342c4d5cec..2e2dd88fc79f 100644
>> --- a/net/netlink/af_netlink.c
>> +++ b/net/netlink/af_netlink.c
>> @@ -2606,13 +2606,13 @@ static int netlink_seq_show(struct seq_file *seq, void
>> *v)
>> {
>> 	if (v == SEQ_START_TOKEN) {
>> 		seq_puts(seq,
>> -			 "sk       Eth Pid    Groups   "
>> -			 "Rmem     Wmem     Dump     Locks     Drops
>> Inode\n");
>> +			 "sk               Eth Pid        Groups   "
>> +			 "Rmem     Wmem     Dump  Locks    Drops    Inode\n");
>> 	} else {
>> 		struct sock *s = v;
>> 		struct netlink_sock *nlk = nlk_sk(s);
>>
>> -		seq_printf(seq, "%pK %-3d %-6u %08x %-8d %-8d %d %-8d %-8d
>> %-8lu\n",
>> +		seq_printf(seq, "%pK %-3d %-10u %08x %-8d %-8d %-5d %-8d %-8d
>> %-8lu\n",
>> 			   s,
>> 			   s->sk_protocol,
>> 			   nlk->portid,
>> --
>> 2.11.0
>>
>> --
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