From: Mathieu Malaterre <malat@debian.org>
Date: Wed, 6 Jun 2018 21:42:32 +0200
Subject: watchdog/core: Add missing prototypes for weak functions
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Git-commit: 81bd415c91eb966118d773dddf254aebf3022411
Patch-mainline: v4.20-rc2
References: git-fixes

The split out of the hard lockup detector exposed two new weak functions,
but no prototypes for them, which triggers the build warning:

  kernel/watchdog.c:109:12: warning: no previous prototype for ‘watchdog_nmi_enable’ [-Wmissing-prototypes]
  kernel/watchdog.c:115:13: warning: no previous prototype for ‘watchdog_nmi_disable’ [-Wmissing-prototypes]

Add the prototypes.

Fixes: 73ce0511c436 ("kernel/watchdog.c: move hardlockup detector to separate file")
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Babu Moger <babu.moger@oracle.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180606194232.17653-1-malat@debian.org

Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 include/linux/nmi.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -61,6 +61,9 @@ static inline void reset_hung_task_detec
 #define NMI_WATCHDOG_ENABLED      (1 << NMI_WATCHDOG_ENABLED_BIT)
 #define SOFT_WATCHDOG_ENABLED     (1 << SOFT_WATCHDOG_ENABLED_BIT)
 
+int watchdog_nmi_enable(unsigned int cpu);
+void watchdog_nmi_disable(unsigned int cpu);
+
 /**
  * touch_nmi_watchdog - restart NMI watchdog timeout.
  *