From: Joel Granados <j.granados@samsung.com>
To: Luis Chamberlain <mcgrof@kernel.org>
Cc: <keescook@chromium.org>, <yzaikin@google.com>,
<ebiederm@xmission.com>, <dave.hansen@intel.com>, <arnd@arndb.de>,
<bp@alien8.de>, <James.Bottomley@HansenPartnership.com>,
<deller@gmx.de>, <tglx@linutronix.de>, <mingo@redhat.com>,
<x86@kernel.org>, <hpa@zytor.com>, <luto@kernel.org>,
<peterz@infradead.org>, <brgerst@gmail.com>,
<christophe.jaillet@wanadoo.fr>,
<kirill.shutemov@linux.intel.com>, <jroedel@suse.de>,
<akpm@linux-foundation.org>, <willy@infradead.org>,
<linux-parisc@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 1/2] sysctl: remove empty dev table
Date: Tue, 30 May 2023 23:13:49 +0200 [thread overview]
Message-ID: <20230530211349.olrowajsp3idiurd@localhost> (raw)
In-Reply-To: <20230526222207.982107-2-mcgrof@kernel.org>
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On Fri, May 26, 2023 at 03:22:05PM -0700, Luis Chamberlain wrote:
> Now that all the dev sysctls have been moved out we can remove the
> dev sysctl base directory. We don't need to create base directories,
> they are created for you as if using 'mkdir -p' with register_syctl()
> and register_sysctl_init(). For details refer to sysctl_mkdir_p()
> usage.
>
> We save 90 bytes with this changes:
>
> ./scripts/bloat-o-meter vmlinux.2.remove-sysctl-table vmlinux.3-remove-dev-table
> add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-90 (-90)
> Function old new delta
> sysctl_init_bases 111 85 -26
> dev_table 64 - -64
> Total: Before=21257057, After=21256967, chg -0.00%
>
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
> ---
> kernel/sysctl.c | 5 -----
> 1 file changed, 5 deletions(-)
>
> diff --git a/kernel/sysctl.c b/kernel/sysctl.c
> index fa2aa8bd32b6..a7fdb828afb6 100644
> --- a/kernel/sysctl.c
> +++ b/kernel/sysctl.c
> @@ -2344,16 +2344,11 @@ static struct ctl_table debug_table[] = {
> { }
> };
>
> -static struct ctl_table dev_table[] = {
> - { }
> -};
> -
> int __init sysctl_init_bases(void)
> {
> register_sysctl_init("kernel", kern_table);
> register_sysctl_init("vm", vm_table);
> register_sysctl_init("debug", debug_table);
> - register_sysctl_init("dev", dev_table);
>
> return 0;
> }
> --
> 2.39.2
>
Reviewed-by: Joel Granados <j.granados@samsung.com>
--
Joel Granados
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next prev parent reply other threads:[~2023-05-30 21:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-26 22:22 [PATCH v2 0/2] kernel/sysctl.c: remove to major base directories Luis Chamberlain
2023-05-26 22:22 ` [PATCH v2 1/2] sysctl: remove empty dev table Luis Chamberlain
2023-05-29 20:04 ` Joel Granados
2023-05-30 16:42 ` Luis Chamberlain
2023-05-30 21:10 ` Joel Granados
2023-05-30 22:55 ` Luis Chamberlain
2023-06-01 5:35 ` Joel Granados
2023-05-30 21:13 ` Joel Granados [this message]
2023-05-26 22:22 ` [PATCH v2 2/2] signal: move show_unhandled_signals sysctl to its own file Luis Chamberlain
2023-05-29 20:05 ` Joel Granados
2023-05-30 21:14 ` Joel Granados
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