quoted

diff --git a/Documentation/admin-guide/kernel-parameters.txt

b/Documentation/admin-guide/kernel-parameters.txt
index a8d0afd..27c5f96 100644

--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt

@@ -6934,12 +6934,12 @@ Kernel parameters

  	softlockup_panic=
  			[KNL] Should the soft-lockup detector generate panics.
-			Format: 0 | 1
+			Format: <int>

-			A value of 1 instructs the soft-lockup detector
-			to panic the machine when a soft-lockup occurs. It is
-			also controlled by the kernel.softlockup_panic sysctl
-			and CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC, which is the
+			A value of non-zero instructs the soft-lockup detector
+			to panic the machine when a soft-lockup duration exceeds
+			N thresholds. It is also controlled by the kernel.softlockup_panic
+			sysctl and CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC, which is

the

quoted

  			respective build-time switch to that functionality.

Seems like kernel/configs/debug.config still has the old format "#
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set" ...

Should be updated to "CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=0", right?

Will fix 

quoted

  	softlockup_all_cpu_backtrace=

diff --git a/arch/arm/configs/aspeed_g5_defconfig

b/arch/arm/configs/aspeed_g5_defconfig
index 2e6ea13..ec558e5 100644

--- a/arch/arm/configs/aspeed_g5_defconfig
+++ b/arch/arm/configs/aspeed_g5_defconfig

@@ -306,7 +306,7 @@ CONFIG_SCHED_STACK_END_CHECK=y
  CONFIG_PANIC_ON_OOPS=y
  CONFIG_PANIC_TIMEOUT=-1
  CONFIG_SOFTLOCKUP_DETECTOR=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
  CONFIG_BOOTPARAM_HUNG_TASK_PANIC=1
  CONFIG_WQ_WATCHDOG=y
  # CONFIG_SCHED_DEBUG is not set

diff --git a/arch/arm/configs/pxa3xx_defconfig

b/arch/arm/configs/pxa3xx_defconfig
index 07d422f..fb272e3 100644

--- a/arch/arm/configs/pxa3xx_defconfig
+++ b/arch/arm/configs/pxa3xx_defconfig

@@ -100,7 +100,7 @@ CONFIG_PRINTK_TIME=y
  CONFIG_DEBUG_KERNEL=y
  CONFIG_MAGIC_SYSRQ=y
  CONFIG_DEBUG_SHIRQ=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
  # CONFIG_SCHED_DEBUG is not set
  CONFIG_DEBUG_SPINLOCK=y
  CONFIG_DEBUG_SPINLOCK_SLEEP=y

diff --git a/arch/openrisc/configs/or1klitex_defconfig

b/arch/openrisc/configs/or1klitex_defconfig
index fb1eb9a..984b0e3 100644

--- a/arch/openrisc/configs/or1klitex_defconfig
+++ b/arch/openrisc/configs/or1klitex_defconfig

@@ -52,5 +52,5 @@

CONFIG_LSM="lockdown,yama,loadpin,safesetid,integrity,bpf"

quoted

  CONFIG_PRINTK_TIME=y
  CONFIG_PANIC_ON_OOPS=y
  CONFIG_SOFTLOCKUP_DETECTOR=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
  CONFIG_BUG_ON_DATA_CORRUPTION=y

diff --git a/arch/powerpc/configs/skiroot_defconfig

b/arch/powerpc/configs/skiroot_defconfig
index 2b71a6d..a4114fc 100644

--- a/arch/powerpc/configs/skiroot_defconfig
+++ b/arch/powerpc/configs/skiroot_defconfig

@@ -289,7 +289,7 @@ CONFIG_SCHED_STACK_END_CHECK=y
  CONFIG_DEBUG_STACKOVERFLOW=y
  CONFIG_PANIC_ON_OOPS=y
  CONFIG_SOFTLOCKUP_DETECTOR=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
  CONFIG_HARDLOCKUP_DETECTOR=y
  CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
  CONFIG_WQ_WATCHDOG=y

diff --git a/drivers/gpu/drm/ci/arm.config

b/drivers/gpu/drm/ci/arm.config index 411e814..d7c5167 100644

--- a/drivers/gpu/drm/ci/arm.config
+++ b/drivers/gpu/drm/ci/arm.config

@@ -52,7 +52,7 @@ CONFIG_TMPFS=y
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKDEP=n
  CONFIG_SOFTLOCKUP_DETECTOR=n
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=n
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=0

  CONFIG_FW_LOADER_COMPRESS=y

diff --git a/drivers/gpu/drm/ci/arm64.config

b/drivers/gpu/drm/ci/arm64.config index fddfbd4..ea0e307 100644

--- a/drivers/gpu/drm/ci/arm64.config
+++ b/drivers/gpu/drm/ci/arm64.config

@@ -161,7 +161,7 @@ CONFIG_TMPFS=y
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKDEP=n
  CONFIG_SOFTLOCKUP_DETECTOR=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1

  CONFIG_DETECT_HUNG_TASK=y

diff --git a/drivers/gpu/drm/ci/x86_64.config

b/drivers/gpu/drm/ci/x86_64.config
index 8eaba388..7ac98a7 100644

--- a/drivers/gpu/drm/ci/x86_64.config
+++ b/drivers/gpu/drm/ci/x86_64.config

@@ -47,7 +47,7 @@ CONFIG_TMPFS=y
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKDEP=n
  CONFIG_SOFTLOCKUP_DETECTOR=y
-CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1

  CONFIG_DETECT_HUNG_TASK=y

diff --git a/kernel/watchdog.c b/kernel/watchdog.c index

0685e3a..a5fa116 100644

--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c

@@ -363,7 +363,7 @@ static struct cpumask watchdog_allowed_mask

__read_mostly;

  /* Global variables, exported for sysctl */
  unsigned int __read_mostly softlockup_panic =
-			IS_ENABLED(CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC);
+			CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC;

  static bool softlockup_initialized __read_mostly;
  static u64 __read_mostly sample_period; @@ -879,7 +879,9 @@ static
enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer)

  		add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK);
  		sys_info(softlockup_si_mask & ~SYS_INFO_ALL_BT);
-		if (softlockup_panic)
+		duration = duration / get_softlockup_thresh();

Nit: reusing "duration" here makes things a bit confusing, maybe just use a temp
variable?

	thresh_count = duration / get_softlockup_thresh();

	if (softlockup_panic && thresh_count >= softlockup_panic)
		panic("softlockup: hung tasks");

Will change in next version, thanks

[Li,Rongqing]