linux-kernel - Re: [PATCH v4 1/2] fs/proc: optimize exactly register one ctl

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Date:   Fri, 11 Mar 2022 22:14:17 -0800
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Xiaoming Ni <nixiaoming@...wei.com>
Cc:     Meng Tang <tangmeng@...ontech.com>, mcgrof@...nel.org,
        keescook@...omium.org, yzaikin@...gle.com, ebiederm@...ssion.com,
        willy@...radead.org, nizhen@...ontech.com,
        zhanglianjie@...ontech.com, sujiaxun@...ontech.com,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] fs/proc: optimize exactly register one ctl_table

On Fri, 04 Mar 2022, Xiaoming Ni wrote:
>For example,
>
>+ #define register_sysctl_init(path, table)
>__register_sysctl_init(path, table, ARRAY_SIZE(table))
>...
>-		for (entry = table; entry->procname; entry++, node++)
>+		for (entry = table; entry->procname && num > 0; entry++, node++, num--) {

Furthermore the other iteratators could be consolidated such as:

+#define for_each_table_entry(entry, table) \
+       for ((entry) = (table); (entry)->procname; (entry)++)

.... probably before this patch.

Thanks,
Davidlohr