panic: Separate sysctl logic from CONFIG_SMP

commit 9360d035a579d95d1e76c471061b9065b18a0eb1 upstream.

In preparation for adding more sysctls directly in kernel/panic.c, split
CONFIG_SMP from the logic that adds sysctls.

Cc: Petr Mladek <pmladek@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: tangmeng <tangmeng@uniontech.com>
Cc: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221117234328.594699-1-keescook@chromium.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/kernel/panic.c b/kernel/panic.c
index 5ed1ad0..0b56031 100644 (file)
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -73,8 +73,9 @@ ATOMIC_NOTIFIER_HEAD(panic_notifier_list);
 
 EXPORT_SYMBOL(panic_notifier_list);
 
-#if defined(CONFIG_SMP) && defined(CONFIG_SYSCTL)
+#ifdef CONFIG_SYSCTL
 static struct ctl_table kern_panic_table[] = {
+#ifdef CONFIG_SMP
        {
                .procname       = "oops_all_cpu_backtrace",
                .data           = &sysctl_oops_all_cpu_backtrace,
@@ -84,6 +85,7 @@ static struct ctl_table kern_panic_table[] = {
                .extra1         = SYSCTL_ZERO,
                .extra2         = SYSCTL_ONE,
        },
+#endif
        { }
 };