diff options
| author | Petr Vorel <pvorel@suse.cz> | 2022-09-01 21:44:03 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-09-11 21:55:12 -0700 |
| commit | bfca3dd3d0680fc2fc7f659a152234afbac26e4d (patch) | |
| tree | 31be270b66428d2ea0ebfa65b55c2f3d5d015b3b | |
| parent | 8ea0114eda0c1c85f8f01922ac8fc1e489a61129 (diff) | |
kernel/utsname_sysctl.c: print kernel arch
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.
Link: https://lkml.kernel.org/r/20220901194403.3819-1-pvorel@suse.cz
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: David Sterba <dsterba@suse.com>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | Documentation/admin-guide/sysctl/kernel.rst | 5 | ||||
| -rw-r--r-- | kernel/utsname_sysctl.c | 7 |
2 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index ee6572b1edad..bbaa85194695 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 @@ -74,6 +74,13 @@ 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, .maxlen = sizeof(init_uts_ns.name.sysname), |