Messages in this thread | | | Date | Fri, 29 Jul 2022 14:53:44 +0200 | From | Petr Vorel <> | Subject | Re: [PATCH v2 1/1] drivers/base/cpu: Print kernel arch |
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Hi all,
> Print the machine hardware name (UTS_MACHINE) in /proc/sys/kernel/arch.
> This helps people who debug kernel with initramfs with minimal > environment (i.e. without coreutils or even busybox) or allow to open > sysfs file instead of run 'uname -m' in high level languages.
> Signed-off-by: Petr Vorel <pvorel@suse.cz> > ---
Changes v1->v2: * Add file into /proc/sys/kernel/ (previously it was in /sys/devices/system/cpu/). There are * Update Documentation/ABI/ (Greg)
Kind regards, Petr
> Documentation/admin-guide/sysctl/kernel.rst | 5 +++++ kernel/utsname_sysctl.c > | 7 +++++++ 2 files changed, 12 insertions(+)
> diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst > index ddccd1077462..70a0acf07101 100644 > --- a/Documentation/admin-guide/sysctl/kernel.rst > +++ b/Documentation/admin-guide/sysctl/kernel.rst > @@ -65,6 +65,11 @@ combining the following values: > 4 s3_beep > = =======
> +arch > +==== > + > +The machine hardware name, the same output as ``uname -m`` > +(e.g. ``x86_64`` or ``aarch64``).
> auto_msgmni > =========== > diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c > index 4ca61d49885b..7ffdd2cd5ff9 100644 > --- a/kernel/utsname_sysctl.c > +++ b/kernel/utsname_sysctl.c > @@ -73,6 +73,13 @@ static DEFINE_CTL_TABLE_POLL(hostname_poll); > static DEFINE_CTL_TABLE_POLL(domainname_poll);
> static struct ctl_table uts_kern_table[] = { > + { > + .procname = "arch", > + .data = init_uts_ns.name.machine, > + .maxlen = sizeof(init_uts_ns.name.machine), > + .mode = 0444, > + .proc_handler = proc_do_uts_string, > + }, > { > .procname = "ostype", > .data = init_uts_ns.name.sysname,
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