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Date:   Thu, 25 May 2023 11:37:47 +0300
From:   Dan Carpenter <dan.carpenter@linaro.org>
To:     Joel Granados <j.granados@samsung.com>
Cc:     mcgrof@kernel.org, Christian Brauner <brauner@kernel.org>,
        Kees Cook <keescook@chromium.org>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        Iurii Zaikin <yzaikin@google.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Subject: Re: [PATCH v4 7/8] sysctl: Refactor base paths registrations
Message-ID: <c97bfda5-cecf-4521-880b-02c6da987120@kili.mountain>
References: <20230523122220.1610825-1-j.granados@samsung.com>
 <CGME20230523122236eucas1p17639bfdbfb30c9d751e0a8fc85fe2fd3@eucas1p1.samsung.com>
 <20230523122220.1610825-8-j.granados@samsung.com>
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On Tue, May 23, 2023 at 02:22:19PM +0200, Joel Granados wrote:
> This is part of the general push to deprecate register_sysctl_paths and
> register_sysctl_table. The old way of doing this through
> register_sysctl_base and DECLARE_SYSCTL_BASE macro is replaced with a
> call to register_sysctl_init. The 5 base paths affected are: "kernel",
> "vm", "debug", "dev" and "fs".
> 
> We remove the register_sysctl_base function and the DECLARE_SYSCTL_BASE
> macro since they are no longer needed.
> 
> In order to quickly acertain that the paths did not actually change I
> executed `find /proc/sys/ | sha1sum` and made sure that the sha was the
> same before and after the commit.
> 
> We end up saving 563 bytes with this change:
> 
> ./scripts/bloat-o-meter vmlinux.0.base vmlinux.1.refactor-base-paths
> add/remove: 0/5 grow/shrink: 2/0 up/down: 77/-640 (-563)
> Function                                     old     new   delta
> sysctl_init_bases                             55     111     +56
> init_fs_sysctls                               12      33     +21
> vm_base_table                                128       -    -128
> kernel_base_table                            128       -    -128
> fs_base_table                                128       -    -128
> dev_base_table                               128       -    -128
> debug_base_table                             128       -    -128
> Total: Before=21258215, After=21257652, chg -0.00%
> 
> Signed-off-by: Joel Granados <j.granados@samsung.com>
> [mcgrof: modified to use register_sysctl_init() over register_sysctl()
>  and add bloat-o-meter stats]
> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>

This needs a Fixes tag so it doesn't get backported by some weird fluke.
Or you could just fold it in with the original patch which introduced
the bug.

Probably add a copy of the output from dmesg?  Maybe add some
Reported-by tags?

regards,
dan carpenter
>