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xen/mcelog: mark g_physinfo, ncpus and xen_mce_chrdev_device as __ro_after_init

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The 'g_physinfo' and 'ncpus' variables are initialized only during the
init phase in the 'bind_virq_for_mce' function and never changed. So,
mark them as __ro_after_init.

The 'xen_mce_chrdev_device' variable is initialized only in the
declaration and never changed. So, this variable could be 'const', but
using the 'misc_register' and 'misc_deregister' functions discards the
'const' qualifier. Therefore, as an alternative, mark it as
__ro_after_init.

Signed-off-by: Len Bao <len.bao@gmx.us>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <20260523132802.25391-1-len.bao@gmx.us>
This commit is contained in:
Len Bao 2026-05-23 13:28:01 +00:00 committed by Juergen Gross
parent c1fd2c9f7f
commit 19c5d6401d
1 changed files with 3 additions and 3 deletions
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6
drivers/xen/mcelog.c
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@ -54,8 +54,8 @@
#include <asm/xen/hypervisor.h>
static struct mc_info g_mi;
static struct mcinfo_logical_cpu *g_physinfo;
static uint32_t ncpus;
static struct mcinfo_logical_cpu *g_physinfo __ro_after_init;
static uint32_t ncpus __ro_after_init;
static DEFINE_MUTEX(mcelog_lock);
@ -182,7 +182,7 @@ static const struct file_operations xen_mce_chrdev_ops = {
.unlocked_ioctl = xen_mce_chrdev_ioctl,
};
static struct miscdevice xen_mce_chrdev_device = {
static struct miscdevice xen_mce_chrdev_device __ro_after_init = {
MISC_MCELOG_MINOR,
"mcelog",
&xen_mce_chrdev_ops,