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e700f5d156
The softlockup_panic sysctl is currently a binary option: panic immediately or never panic on soft lockups. Panicking on any soft lockup, regardless of duration, can be overly aggressive for brief stalls that may be caused by legitimate operations. Conversely, never panicking may allow severe system hangs to persist undetected. Extend softlockup_panic to accept an integer threshold, allowing the kernel to panic only when the normalized lockup duration exceeds N watchdog threshold periods. This provides finer-grained control to distinguish between transient delays and persistent system failures. The accepted values are: - 0: Don't panic (unchanged) - 1: Panic when duration >= 1 * threshold (20s default, original behavior) - N > 1: Panic when duration >= N * threshold (e.g., 2 = 40s, 3 = 60s.) The original behavior is preserved for values 0 and 1, maintaining full backward compatibility while allowing systems to tolerate brief lockups while still catching severe, persistent hangs. [lirongqing@baidu.com: v2] Link: https://lkml.kernel.org/r/20251218074300.4080-1-lirongqing@baidu.com Link: https://lkml.kernel.org/r/20251216074521.2796-1-lirongqing@baidu.com Signed-off-by: Li RongQing <lirongqing@baidu.com> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Lance Yang <lance.yang@linux.dev> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Song Liu <song@kernel.org> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
110 lines
2.7 KiB
Plaintext
110 lines
2.7 KiB
Plaintext
CONFIG_SYSVIPC=y
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CONFIG_PREEMPT=y
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CONFIG_LOG_BUF_SHIFT=18
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# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
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CONFIG_KALLSYMS_ALL=y
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# CONFIG_BLK_DEV_BSG is not set
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# CONFIG_ARCH_MULTI_V7 is not set
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CONFIG_ARCH_PXA=y
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CONFIG_MACH_PXA3XX_DT=y
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CONFIG_AEABI=y
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CONFIG_CMDLINE="root=/dev/nfs rootfstype=nfs nfsroot=192.168.1.100:/nfsroot/ ip=192.168.1.101:192.168.1.100::255.255.255.0::eth0:on console=ttyS0,115200 mem=64M debug"
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CONFIG_FPE_NWFPE=y
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CONFIG_MODULES=y
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CONFIG_NET=y
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CONFIG_PACKET=y
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CONFIG_UNIX=y
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CONFIG_INET=y
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CONFIG_IP_PNP=y
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# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
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# CONFIG_INET_XFRM_MODE_TUNNEL is not set
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# CONFIG_INET_XFRM_MODE_BEET is not set
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# CONFIG_INET_DIAG is not set
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# CONFIG_IPV6 is not set
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# CONFIG_STANDALONE is not set
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# CONFIG_PREVENT_FIRMWARE_BUILD is not set
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CONFIG_MTD=y
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CONFIG_MTD_BLOCK=y
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CONFIG_MTD_ONENAND=y
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CONFIG_MTD_ONENAND_VERIFY_WRITE=y
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CONFIG_MTD_ONENAND_GENERIC=y
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CONFIG_MTD_RAW_NAND=y
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CONFIG_MTD_NAND_MARVELL=y
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CONFIG_BLK_DEV_LOOP=y
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CONFIG_BLK_DEV_RAM=y
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CONFIG_NETDEVICES=y
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CONFIG_SMC91X=y
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# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
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# CONFIG_KEYBOARD_ATKBD is not set
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CONFIG_KEYBOARD_GPIO=y
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CONFIG_KEYBOARD_PXA27x=y
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CONFIG_INPUT_TOUCHSCREEN=y
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# CONFIG_LEGACY_PTYS is not set
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CONFIG_SERIAL_PXA=y
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CONFIG_SERIAL_PXA_CONSOLE=y
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# CONFIG_HW_RANDOM is not set
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CONFIG_I2C=y
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# CONFIG_I2C_HELPER_AUTO is not set
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CONFIG_I2C_PXA=y
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CONFIG_SPI=y
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CONFIG_SPI_PXA2XX=y
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CONFIG_GPIO_MAX732X=y
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CONFIG_GPIO_PCA953X=y
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CONFIG_GPIO_PCF857X=y
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CONFIG_GPIO_MAX7301=y
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CONFIG_POWER_SUPPLY_DEBUG=y
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CONFIG_PDA_POWER=y
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CONFIG_BATTERY_DA9030=y
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# CONFIG_HWMON is not set
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CONFIG_PMIC_DA903X=y
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CONFIG_REGULATOR=y
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CONFIG_REGULATOR_DEBUG=y
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CONFIG_REGULATOR_DA903X=y
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CONFIG_FB=y
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CONFIG_FB_PXA=y
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CONFIG_LCD_CLASS_DEVICE=y
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CONFIG_LCD_TDO24M=y
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CONFIG_BACKLIGHT_CLASS_DEVICE=y
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CONFIG_BACKLIGHT_DA903X=y
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# CONFIG_VGA_CONSOLE is not set
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CONFIG_FRAMEBUFFER_CONSOLE=y
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CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
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CONFIG_LOGO=y
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# CONFIG_USB_SUPPORT is not set
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CONFIG_MMC=y
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CONFIG_MMC_PXA=y
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CONFIG_NEW_LEDS=y
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CONFIG_LEDS_CLASS=m
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CONFIG_LEDS_GPIO=m
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CONFIG_LEDS_DA903X=m
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CONFIG_LEDS_TRIGGERS=y
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CONFIG_LEDS_TRIGGER_TIMER=m
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CONFIG_LEDS_TRIGGER_HEARTBEAT=m
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CONFIG_LEDS_TRIGGER_BACKLIGHT=m
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CONFIG_LEDS_TRIGGER_GPIO=m
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CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
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CONFIG_JFFS2_FS=y
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CONFIG_JFFS2_FS_WBUF_VERIFY=y
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CONFIG_JFFS2_COMPRESSION_OPTIONS=y
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CONFIG_JFFS2_LZO=y
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CONFIG_JFFS2_RUBIN=y
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CONFIG_NFS_FS=y
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CONFIG_NFS_V3=y
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CONFIG_NFS_V3_ACL=y
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CONFIG_NFS_V4=y
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CONFIG_ROOT_NFS=y
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CONFIG_NLS=y
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CONFIG_FONTS=y
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CONFIG_FONT_6x11=y
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CONFIG_PRINTK_TIME=y
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CONFIG_DEBUG_KERNEL=y
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CONFIG_MAGIC_SYSRQ=y
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CONFIG_DEBUG_SHIRQ=y
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CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
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# CONFIG_SCHED_DEBUG is not set
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CONFIG_DEBUG_SPINLOCK=y
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CONFIG_DEBUG_SPINLOCK_SLEEP=y
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# CONFIG_FTRACE is not set
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CONFIG_DEBUG_USER=y
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# CONFIG_CRYPTO_HW is not set
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