linux-kernel - Re: [PATCH v2 1/1] lib: add version into /proc/allocinfo output

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Date: Tue, 14 May 2024 09:58:18 -0700
From: Kees Cook <keescook@...omium.org>
To: Suren Baghdasaryan <surenb@...gle.com>
Cc: akpm@...ux-foundation.org, kent.overstreet@...ux.dev,
	pasha.tatashin@...een.com, vbabka@...e.cz, linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] lib: add version into /proc/allocinfo output

On Tue, May 14, 2024 at 09:31:28AM -0700, Suren Baghdasaryan wrote:
> Add version string and a header at the beginning of /proc/allocinfo to
> allow later format changes. Example output:
> 
> > head /proc/allocinfo
> allocinfo - version: 1.0
> #     <size>  <calls> <tag info>
>            0        0 init/main.c:1314 func:do_initcalls
>            0        0 init/do_mounts.c:353 func:mount_nodev_root
>            0        0 init/do_mounts.c:187 func:mount_root_generic
>            0        0 init/do_mounts.c:158 func:do_mount_root
>            0        0 init/initramfs.c:493 func:unpack_to_rootfs
>            0        0 init/initramfs.c:492 func:unpack_to_rootfs
>            0        0 init/initramfs.c:491 func:unpack_to_rootfs
>          512        1 arch/x86/events/rapl.c:681 func:init_rapl_pmus
>          128        1 arch/x86/events/rapl.c:571 func:rapl_cpu_online
> 
> Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>

Ah yeah, good idea. (Do we have versioning like this anywhere else in
our /proc files? It seems a nice thing to add...)

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook