linux-kernel - [PATCH] parisc: add sysctl file interface panic_on

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Date:   Sat, 11 Apr 2020 21:06:19 +0800
From:   Xiaoming Ni <nixiaoming@...wei.com>
To:     <mcgrof@...nel.org>, <keescook@...omium.org>, <yzaikin@...gle.com>,
        <James.Bottomley@...senPartnership.com>, <deller@....de>
CC:     <nixiaoming@...wei.com>, <linux-kernel@...r.kernel.org>,
        <linux-fsdevel@...r.kernel.org>, <linux-parisc@...r.kernel.org>,
        <wangle6@...wei.com>, <victor.lisheng@...wei.com>
Subject: [PATCH] parisc: add sysctl file interface panic_on_stackoverflow

The variable sysctl_panic_on_stackoverflow is used in
arch/parisc/kernel/irq.c and arch/x86/kernel/irq_32.c, but the sysctl file
interface panic_on_stackoverflow only exists on x86.

Add sysctl file interface panic_on_stackoverflow for parisc

Signed-off-by: Xiaoming Ni <nixiaoming@...wei.com>
---
 kernel/sysctl.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8a176d8..b9ff323 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -994,30 +994,32 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write,
 		.proc_handler   = proc_dointvec,
 	},
 #endif
-#if defined(CONFIG_X86)
+
+#if (defined(CONFIG_X86_32) || defined(CONFIG_PARISC)) && \
+	defined(CONFIG_DEBUG_STACKOVERFLOW)
 	{
-		.procname	= "panic_on_unrecovered_nmi",
-		.data		= &panic_on_unrecovered_nmi,
+		.procname	= "panic_on_stackoverflow",
+		.data		= &sysctl_panic_on_stackoverflow,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
+#endif
+#if defined(CONFIG_X86)
 	{
-		.procname	= "panic_on_io_nmi",
-		.data		= &panic_on_io_nmi,
+		.procname	= "panic_on_unrecovered_nmi",
+		.data		= &panic_on_unrecovered_nmi,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-#ifdef CONFIG_DEBUG_STACKOVERFLOW
 	{
-		.procname	= "panic_on_stackoverflow",
-		.data		= &sysctl_panic_on_stackoverflow,
+		.procname	= "panic_on_io_nmi",
+		.data		= &panic_on_io_nmi,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-#endif
 	{
 		.procname	= "bootloader_type",
 		.data		= &bootloader_type,
-- 
1.8.5.6