diff --git a/arch/Kconfig b/arch/Kconfig
index 77e5af5fda3f41a36b7d6ce18dd168189582554c..6517e5477459338ca9493c12f546d79c0264c171 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -400,23 +400,8 @@ config HAVE_HARDLOCKUP_DETECTOR_PERF
The arch chooses to use the generic perf-NMI-based hardlockup
detector. Must define HAVE_PERF_EVENTS_NMI.
-config HAVE_NMI_WATCHDOG
- depends on HAVE_NMI
- bool
- help
- The arch provides its own hardlockup detector implementation instead
- of the generic ones.
-
- Sparc64 defines this variable without HAVE_HARDLOCKUP_DETECTOR_ARCH.
- It is the last arch-specific implementation which was developed before
- adding the common infrastructure for handling hardlockup detectors.
- It is always built. It does _not_ use the common command line
- parameters and sysctl interface, except for
- /proc/sys/kernel/nmi_watchdog.
-
config HAVE_HARDLOCKUP_DETECTOR_ARCH
bool
- select HAVE_NMI_WATCHDOG
help
The arch provides its own hardlockup detector implementation instead
of the generic ones.
@@ -424,9 +409,6 @@ config HAVE_HARDLOCKUP_DETECTOR_ARCH
It uses the same command line parameters, and sysctl interface,
as the generic hardlockup detectors.
- HAVE_NMI_WATCHDOG is selected to build the code shared with
- the sparc64 specific implementation.
-
config HAVE_PERF_REGS
bool
help
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 8535e19062f65fa99cbe380e4ea4f02422d28954..7297f69635cbda35bb98b99f627ba01729a85058 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -33,7 +33,7 @@ config SPARC
select ARCH_WANT_IPC_PARSE_VERSION
select GENERIC_PCI_IOMAP
select HAS_IOPORT
- select HAVE_NMI_WATCHDOG if SPARC64
+ select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64
select HAVE_CBPF_JIT if SPARC32
select HAVE_EBPF_JIT if SPARC64
select HAVE_DEBUG_BUGVERBOSE
diff --git a/arch/sparc/Kconfig.debug b/arch/sparc/Kconfig.debug
index 6b2bec1888b3ec8a621870f46e55accc54729b95..4903b6847e43e14be225bb1646cdc1f8b1f48c19 100644
--- a/arch/sparc/Kconfig.debug
+++ b/arch/sparc/Kconfig.debug
@@ -14,3 +14,12 @@ config FRAME_POINTER
bool
depends on MCOUNT
default y
+
+config HAVE_HARDLOCKUP_DETECTOR_SPARC64
+ depends on HAVE_NMI
+ bool
+ help
+ Sparc64 hardlockup detector is the last one developed before adding
+ the common infrastructure for handling hardlockup detectors. It is
+ always built. It does _not_ use the common command line parameters
+ and sysctl interface, except for /proc/sys/kernel/nmi_watchdog.
diff --git a/include/linux/nmi.h b/include/linux/nmi.h
index 07bf2b813463d833da72708776fa9a15a29ffb04..63acc6586774d185f5ae7eac7b3b9d5cc4b64fff 100644
--- a/include/linux/nmi.h
+++ b/include/linux/nmi.h
@@ -9,7 +9,7 @@
#include <asm/irq.h>
/* Arch specific watchdogs might need to share extra watchdog-related APIs. */
-#if defined(CONFIG_HAVE_NMI_WATCHDOG)
+#if defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH) || defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64)
#include <asm/nmi.h>
#endif
@@ -90,8 +90,7 @@ static inline void hardlockup_detector_disable(void) {}
#endif
/* Sparc64 has special implemetantion that is always enabled. */
-#if defined(CONFIG_HARDLOCKUP_DETECTOR) || \
- (defined(CONFIG_HAVE_NMI_WATCHDOG) && !defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH))
+#if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64)
void arch_touch_nmi_watchdog(void);
#else
static inline void arch_touch_nmi_watchdog(void) { }
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index a351ab0c35ebf4bc28887010c9d53a7d22487bcb..010fcc3ac141c6ff5ae8e55c2372121863611e49 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -29,7 +29,7 @@
static DEFINE_MUTEX(watchdog_mutex);
-#if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HAVE_NMI_WATCHDOG)
+#if defined(CONFIG_HARDLOCKUP_DETECTOR) || defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64)
# define WATCHDOG_HARDLOCKUP_DEFAULT 1
#else
# define WATCHDOG_HARDLOCKUP_DEFAULT 0
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index a0b0c4decb89468fa8733240171529a1fece8b56..e94664339e286e2dd306e7ce7fd211991c9e7490 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1050,15 +1050,10 @@ config HAVE_HARDLOCKUP_DETECTOR_BUDDY
# sparc64: has a custom implementation which is not using the common
# hardlockup command line options and sysctl interface.
#
-# Note that HAVE_NMI_WATCHDOG is used to distinguish the sparc64 specific
-# implementaion. It is automatically enabled also for other arch-specific
-# variants which set HAVE_HARDLOCKUP_DETECTOR_ARCH. It makes the check
-# of avaialable and supported variants quite tricky.
-#
config HARDLOCKUP_DETECTOR
bool "Detect Hard Lockups"
- depends on DEBUG_KERNEL && !S390
- depends on ((HAVE_HARDLOCKUP_DETECTOR_PERF || HAVE_HARDLOCKUP_DETECTOR_BUDDY) && !HAVE_NMI_WATCHDOG) || HAVE_HARDLOCKUP_DETECTOR_ARCH
+ depends on DEBUG_KERNEL && !S390 && !HAVE_HARDLOCKUP_DETECTOR_SPARC64
+ depends on HAVE_HARDLOCKUP_DETECTOR_PERF || HAVE_HARDLOCKUP_DETECTOR_BUDDY || HAVE_HARDLOCKUP_DETECTOR_ARCH
imply HARDLOCKUP_DETECTOR_PERF
imply HARDLOCKUP_DETECTOR_BUDDY
select LOCKUP_DETECTOR
@@ -1079,7 +1074,7 @@ config HARDLOCKUP_DETECTOR_PREFER_BUDDY
bool "Prefer the buddy CPU hardlockup detector"
depends on HARDLOCKUP_DETECTOR
depends on HAVE_HARDLOCKUP_DETECTOR_PERF && HAVE_HARDLOCKUP_DETECTOR_BUDDY
- depends on !HAVE_NMI_WATCHDOG
+ depends on !HAVE_HARLOCKUP_DETECTOR_ARCH
help
Say Y here to prefer the buddy hardlockup detector over the perf one.
@@ -1095,7 +1090,7 @@ config HARDLOCKUP_DETECTOR_PERF
bool
depends on HARDLOCKUP_DETECTOR
depends on HAVE_HARDLOCKUP_DETECTOR_PERF && !HARDLOCKUP_DETECTOR_PREFER_BUDDY
- depends on !HAVE_NMI_WATCHDOG
+ depends on !HAVE_HARDLOCKUP_DETECTOR_ARCH
select HARDLOCKUP_DETECTOR_COUNTS_HRTIMER
config HARDLOCKUP_DETECTOR_BUDDY
@@ -1103,7 +1098,7 @@ config HARDLOCKUP_DETECTOR_BUDDY
depends on HARDLOCKUP_DETECTOR
depends on HAVE_HARDLOCKUP_DETECTOR_BUDDY
depends on !HAVE_HARDLOCKUP_DETECTOR_PERF || HARDLOCKUP_DETECTOR_PREFER_BUDDY
- depends on !HAVE_NMI_WATCHDOG
+ depends on !HAVE_HARDLOCKUP_DETECTOR_ARCH
select HARDLOCKUP_DETECTOR_COUNTS_HRTIMER
#