From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Subject: kernel.h: split out panic and oops helpers kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt to start cleaning it up by splitting out panic and oops helpers. There are several purposes of doing this: - dropping dependency in bug.h - dropping a loop by moving out panic_notifier.h - unload kernel.h from something which has its own domain At the same time convert users tree-wide to use new headers, although for the time being include new header back to kernel.h to avoid twisted indirected includes for existing users. [akpm@xxxxxxxxxxxxxxxxxxxx: thread_info.h needs limits.h] [andriy.shevchenko@xxxxxxxxxxxxxxx: ia64 fix] Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@xxxxxxxxxxxxxxx Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@xxxxxxxxxxxxxxx Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Co-developed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Acked-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> Acked-by: Corey Minyard <cminyard@xxxxxxxxxx> Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx> Acked-by: Arnd Bergmann <arnd@xxxxxxxx> Acked-by: Kees Cook <keescook@xxxxxxxxxxxx> Acked-by: Wei Liu <wei.liu@xxxxxxxxxx> Acked-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Acked-by: Sebastian Reichel <sre@xxxxxxxxxx> Acked-by: Luis Chamberlain <mcgrof@xxxxxxxxxx> Acked-by: Stephen Boyd <sboyd@xxxxxxxxxx> Acked-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Acked-by: Helge Deller <deller@xxxxxx> # parisc Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/alpha/kernel/setup.c | 2 arch/arm64/kernel/setup.c | 1 arch/ia64/include/asm/pal.h | 1 arch/mips/kernel/relocate.c | 1 arch/mips/sgi-ip22/ip22-reset.c | 1 arch/mips/sgi-ip32/ip32-reset.c | 1 arch/parisc/kernel/pdc_chassis.c | 1 arch/powerpc/kernel/setup-common.c | 1 arch/s390/kernel/ipl.c | 1 arch/sparc/kernel/sstate.c | 1 arch/um/drivers/mconsole_kern.c | 1 arch/um/kernel/um_arch.c | 1 arch/x86/include/asm/desc.h | 1 arch/x86/kernel/cpu/mshyperv.c | 1 arch/x86/kernel/setup.c | 1 arch/x86/purgatory/purgatory.c | 2 arch/x86/xen/enlighten.c | 1 arch/xtensa/platforms/iss/setup.c | 1 drivers/bus/brcmstb_gisb.c | 1 drivers/char/ipmi/ipmi_msghandler.c | 1 drivers/clk/analogbits/wrpll-cln28hpc.c | 4 drivers/edac/altera_edac.c | 1 drivers/firmware/google/gsmi.c | 1 drivers/hv/vmbus_drv.c | 1 drivers/hwtracing/coresight/coresight-cpu-debug.c | 1 drivers/leds/trigger/ledtrig-activity.c | 1 drivers/leds/trigger/ledtrig-heartbeat.c | 1 drivers/leds/trigger/ledtrig-panic.c | 1 drivers/misc/bcm-vk/bcm_vk_dev.c | 1 drivers/misc/ibmasm/heartbeat.c | 1 drivers/misc/pvpanic/pvpanic.c | 1 drivers/net/ipa/ipa_smp2p.c | 1 drivers/parisc/power.c | 1 drivers/power/reset/ltc2952-poweroff.c | 1 drivers/remoteproc/remoteproc_core.c | 1 drivers/s390/char/con3215.c | 1 drivers/s390/char/con3270.c | 1 drivers/s390/char/sclp.c | 1 drivers/s390/char/sclp_con.c | 1 drivers/s390/char/sclp_vt220.c | 1 drivers/s390/char/zcore.c | 1 drivers/soc/bcm/brcmstb/pm/pm-arm.c | 1 drivers/staging/olpc_dcon/olpc_dcon.c | 1 drivers/video/fbdev/hyperv_fb.c | 1 include/asm-generic/bug.h | 3 include/linux/kernel.h | 84 ---------- include/linux/panic.h | 98 ++++++++++++ include/linux/panic_notifier.h | 12 + include/linux/thread_info.h | 1 kernel/hung_task.c | 1 kernel/kexec_core.c | 1 kernel/panic.c | 1 kernel/rcu/tree.c | 2 kernel/sysctl.c | 1 kernel/trace/trace.c | 1 55 files changed, 169 insertions(+), 85 deletions(-) --- a/arch/alpha/kernel/setup.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/alpha/kernel/setup.c @@ -28,6 +28,7 @@ #include <linux/init.h> #include <linux/string.h> #include <linux/ioport.h> +#include <linux/panic_notifier.h> #include <linux/platform_device.h> #include <linux/memblock.h> #include <linux/pci.h> @@ -46,7 +47,6 @@ #include <linux/log2.h> #include <linux/export.h> -extern struct atomic_notifier_head panic_notifier_list; static int alpha_panic_event(struct notifier_block *, unsigned long, void *); static struct notifier_block alpha_panic_block = { alpha_panic_event, --- a/arch/arm64/kernel/setup.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/arm64/kernel/setup.c @@ -23,6 +23,7 @@ #include <linux/interrupt.h> #include <linux/smp.h> #include <linux/fs.h> +#include <linux/panic_notifier.h> #include <linux/proc_fs.h> #include <linux/memblock.h> #include <linux/of_fdt.h> --- a/arch/ia64/include/asm/pal.h~kernelh-split-out-panic-and-oops-helpers +++ a/arch/ia64/include/asm/pal.h @@ -99,6 +99,7 @@ #include <linux/types.h> #include <asm/fpu.h> +#include <asm/intrinsics.h> /* * Data types needed to pass information into PAL procedures and --- a/arch/mips/kernel/relocate.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/mips/kernel/relocate.c @@ -18,6 +18,7 @@ #include <linux/kernel.h> #include <linux/libfdt.h> #include <linux/of_fdt.h> +#include <linux/panic_notifier.h> #include <linux/sched/task.h> #include <linux/start_kernel.h> #include <linux/string.h> --- a/arch/mips/sgi-ip22/ip22-reset.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/mips/sgi-ip22/ip22-reset.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/sched/signal.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/pm.h> #include <linux/timer.h> --- a/arch/mips/sgi-ip32/ip32-reset.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/mips/sgi-ip32/ip32-reset.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/panic_notifier.h> #include <linux/sched.h> #include <linux/sched/signal.h> #include <linux/notifier.h> --- a/arch/parisc/kernel/pdc_chassis.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/parisc/kernel/pdc_chassis.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/notifier.h> #include <linux/cache.h> --- a/arch/powerpc/kernel/setup-common.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/powerpc/kernel/setup-common.c @@ -9,6 +9,7 @@ #undef DEBUG #include <linux/export.h> +#include <linux/panic_notifier.h> #include <linux/string.h> #include <linux/sched.h> #include <linux/init.h> --- a/arch/s390/kernel/ipl.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/s390/kernel/ipl.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/delay.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/ctype.h> #include <linux/fs.h> --- a/arch/sparc/kernel/sstate.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/sparc/kernel/sstate.c @@ -6,6 +6,7 @@ #include <linux/kernel.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/init.h> --- a/arch/um/drivers/mconsole_kern.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/um/drivers/mconsole_kern.c @@ -12,6 +12,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/sched/debug.h> #include <linux/proc_fs.h> --- a/arch/um/kernel/um_arch.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/um/kernel/um_arch.c @@ -7,6 +7,7 @@ #include <linux/init.h> #include <linux/mm.h> #include <linux/module.h> +#include <linux/panic_notifier.h> #include <linux/seq_file.h> #include <linux/string.h> #include <linux/utsname.h> --- a/arch/x86/include/asm/desc.h~kernelh-split-out-panic-and-oops-helpers +++ a/arch/x86/include/asm/desc.h @@ -9,6 +9,7 @@ #include <asm/irq_vectors.h> #include <asm/cpu_entry_area.h> +#include <linux/debug_locks.h> #include <linux/smp.h> #include <linux/percpu.h> --- a/arch/x86/kernel/cpu/mshyperv.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/x86/kernel/cpu/mshyperv.c @@ -17,6 +17,7 @@ #include <linux/irq.h> #include <linux/kexec.h> #include <linux/i8253.h> +#include <linux/panic_notifier.h> #include <linux/random.h> #include <asm/processor.h> #include <asm/hypervisor.h> --- a/arch/x86/kernel/setup.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/x86/kernel/setup.c @@ -14,6 +14,7 @@ #include <linux/initrd.h> #include <linux/iscsi_ibft.h> #include <linux/memblock.h> +#include <linux/panic_notifier.h> #include <linux/pci.h> #include <linux/root_dev.h> #include <linux/hugetlb.h> --- a/arch/x86/purgatory/purgatory.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/x86/purgatory/purgatory.c @@ -9,6 +9,8 @@ */ #include <linux/bug.h> +#include <linux/kernel.h> +#include <linux/types.h> #include <crypto/sha2.h> #include <asm/purgatory.h> --- a/arch/x86/xen/enlighten.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/x86/xen/enlighten.c @@ -6,6 +6,7 @@ #include <linux/cpu.h> #include <linux/kexec.h> #include <linux/slab.h> +#include <linux/panic_notifier.h> #include <xen/xen.h> #include <xen/features.h> --- a/arch/xtensa/platforms/iss/setup.c~kernelh-split-out-panic-and-oops-helpers +++ a/arch/xtensa/platforms/iss/setup.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/printk.h> #include <linux/string.h> --- a/drivers/bus/brcmstb_gisb.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/bus/brcmstb_gisb.c @@ -6,6 +6,7 @@ #include <linux/init.h> #include <linux/types.h> #include <linux/module.h> +#include <linux/panic_notifier.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/sysfs.h> --- a/drivers/char/ipmi/ipmi_msghandler.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/char/ipmi/ipmi_msghandler.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/errno.h> +#include <linux/panic_notifier.h> #include <linux/poll.h> #include <linux/sched.h> #include <linux/seq_file.h> --- a/drivers/clk/analogbits/wrpll-cln28hpc.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/clk/analogbits/wrpll-cln28hpc.c @@ -23,8 +23,12 @@ #include <linux/bug.h> #include <linux/err.h> +#include <linux/limits.h> #include <linux/log2.h> #include <linux/math64.h> +#include <linux/math.h> +#include <linux/minmax.h> + #include <linux/clk/analogbits-wrpll-cln28hpc.h> /* MIN_INPUT_FREQ: minimum input clock frequency, in Hz (Fref_min) */ --- a/drivers/edac/altera_edac.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/edac/altera_edac.c @@ -20,6 +20,7 @@ #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> +#include <linux/panic_notifier.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/types.h> --- a/drivers/firmware/google/gsmi.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/firmware/google/gsmi.c @@ -19,6 +19,7 @@ #include <linux/dma-mapping.h> #include <linux/fs.h> #include <linux/slab.h> +#include <linux/panic_notifier.h> #include <linux/ioctl.h> #include <linux/acpi.h> #include <linux/io.h> --- a/drivers/hv/vmbus_drv.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/hv/vmbus_drv.c @@ -25,6 +25,7 @@ #include <linux/delay.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/ptrace.h> #include <linux/screen_info.h> #include <linux/kdebug.h> --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -17,6 +17,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> +#include <linux/panic_notifier.h> #include <linux/pm_qos.h> #include <linux/slab.h> #include <linux/smp.h> --- a/drivers/leds/trigger/ledtrig-activity.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/leds/trigger/ledtrig-activity.c @@ -11,6 +11,7 @@ #include <linux/kernel_stat.h> #include <linux/leds.h> #include <linux/module.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/sched.h> #include <linux/slab.h> --- a/drivers/leds/trigger/ledtrig-heartbeat.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/leds/trigger/ledtrig-heartbeat.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/panic_notifier.h> #include <linux/slab.h> #include <linux/timer.h> #include <linux/sched.h> --- a/drivers/leds/trigger/ledtrig-panic.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/leds/trigger/ledtrig-panic.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/leds.h> #include "../leds.h" --- a/drivers/misc/bcm-vk/bcm_vk_dev.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/misc/bcm-vk/bcm_vk_dev.c @@ -9,6 +9,7 @@ #include <linux/fs.h> #include <linux/idr.h> #include <linux/interrupt.h> +#include <linux/panic_notifier.h> #include <linux/kref.h> #include <linux/module.h> #include <linux/mutex.h> --- a/drivers/misc/ibmasm/heartbeat.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/misc/ibmasm/heartbeat.c @@ -9,6 +9,7 @@ */ #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include "ibmasm.h" #include "dot_command.h" #include "lowlevel.h" --- a/drivers/misc/pvpanic/pvpanic.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/misc/pvpanic/pvpanic.c @@ -13,6 +13,7 @@ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/panic_notifier.h> #include <linux/types.h> #include <linux/cdev.h> #include <linux/list.h> --- a/drivers/net/ipa/ipa_smp2p.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/net/ipa/ipa_smp2p.c @@ -8,6 +8,7 @@ #include <linux/device.h> #include <linux/interrupt.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/soc/qcom/smem.h> #include <linux/soc/qcom/smem_state.h> --- a/drivers/parisc/power.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/parisc/power.c @@ -38,6 +38,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/sched/signal.h> #include <linux/kthread.h> --- a/drivers/power/reset/ltc2952-poweroff.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/power/reset/ltc2952-poweroff.c @@ -52,6 +52,7 @@ #include <linux/slab.h> #include <linux/kmod.h> #include <linux/module.h> +#include <linux/panic_notifier.h> #include <linux/mod_devicetable.h> #include <linux/gpio/consumer.h> #include <linux/reboot.h> --- a/drivers/remoteproc/remoteproc_core.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/remoteproc/remoteproc_core.c @@ -20,6 +20,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/device.h> +#include <linux/panic_notifier.h> #include <linux/slab.h> #include <linux/mutex.h> #include <linux/dma-map-ops.h> --- a/drivers/s390/char/con3215.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/con3215.c @@ -19,6 +19,7 @@ #include <linux/console.h> #include <linux/interrupt.h> #include <linux/err.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/serial.h> /* ASYNC_* flags */ #include <linux/slab.h> --- a/drivers/s390/char/con3270.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/con3270.c @@ -13,6 +13,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/list.h> +#include <linux/panic_notifier.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/err.h> --- a/drivers/s390/char/sclp.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/sclp.c @@ -11,6 +11,7 @@ #include <linux/kernel_stat.h> #include <linux/module.h> #include <linux/err.h> +#include <linux/panic_notifier.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/timer.h> --- a/drivers/s390/char/sclp_con.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/sclp_con.c @@ -10,6 +10,7 @@ #include <linux/kmod.h> #include <linux/console.h> #include <linux/init.h> +#include <linux/panic_notifier.h> #include <linux/timer.h> #include <linux/jiffies.h> #include <linux/termios.h> --- a/drivers/s390/char/sclp_vt220.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/sclp_vt220.c @@ -9,6 +9,7 @@ #include <linux/module.h> #include <linux/spinlock.h> +#include <linux/panic_notifier.h> #include <linux/list.h> #include <linux/wait.h> #include <linux/timer.h> --- a/drivers/s390/char/zcore.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/s390/char/zcore.c @@ -15,6 +15,7 @@ #include <linux/init.h> #include <linux/slab.h> #include <linux/debugfs.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <asm/asm-offsets.h> --- a/drivers/soc/bcm/brcmstb/pm/pm-arm.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/soc/bcm/brcmstb/pm/pm-arm.c @@ -28,6 +28,7 @@ #include <linux/notifier.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/panic_notifier.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <linux/printk.h> --- a/drivers/staging/olpc_dcon/olpc_dcon.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/staging/olpc_dcon/olpc_dcon.c @@ -22,6 +22,7 @@ #include <linux/device.h> #include <linux/uaccess.h> #include <linux/ctype.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> #include <linux/olpc-ec.h> #include <asm/tsc.h> --- a/drivers/video/fbdev/hyperv_fb.c~kernelh-split-out-panic-and-oops-helpers +++ a/drivers/video/fbdev/hyperv_fb.c @@ -52,6 +52,7 @@ #include <linux/completion.h> #include <linux/fb.h> #include <linux/pci.h> +#include <linux/panic_notifier.h> #include <linux/efi.h> #include <linux/console.h> --- a/include/asm-generic/bug.h~kernelh-split-out-panic-and-oops-helpers +++ a/include/asm-generic/bug.h @@ -17,7 +17,8 @@ #endif #ifndef __ASSEMBLY__ -#include <linux/kernel.h> +#include <linux/panic.h> +#include <linux/printk.h> #ifdef CONFIG_BUG --- a/include/linux/kernel.h~kernelh-split-out-panic-and-oops-helpers +++ a/include/linux/kernel.h @@ -14,6 +14,7 @@ #include <linux/math.h> #include <linux/minmax.h> #include <linux/typecheck.h> +#include <linux/panic.h> #include <linux/printk.h> #include <linux/build_bug.h> #include <linux/static_call_types.h> @@ -72,7 +73,6 @@ #define lower_32_bits(n) ((u32)((n) & 0xffffffff)) struct completion; -struct pt_regs; struct user; #ifdef CONFIG_PREEMPT_VOLUNTARY @@ -177,14 +177,6 @@ void __might_fault(const char *file, int static inline void might_fault(void) { } #endif -extern struct atomic_notifier_head panic_notifier_list; -extern long (*panic_blink)(int state); -__printf(1, 2) -void panic(const char *fmt, ...) __noreturn __cold; -void nmi_panic(struct pt_regs *regs, const char *msg); -extern void oops_enter(void); -extern void oops_exit(void); -extern bool oops_may_print(void); void do_exit(long error_code) __noreturn; void complete_and_exit(struct completion *, long) __noreturn; @@ -372,52 +364,8 @@ extern int __kernel_text_address(unsigne extern int kernel_text_address(unsigned long addr); extern int func_ptr_is_kernel_text(void *ptr); -#ifdef CONFIG_SMP -extern unsigned int sysctl_oops_all_cpu_backtrace; -#else -#define sysctl_oops_all_cpu_backtrace 0 -#endif /* CONFIG_SMP */ - extern void bust_spinlocks(int yes); -extern int panic_timeout; -extern unsigned long panic_print; -extern int panic_on_oops; -extern int panic_on_unrecovered_nmi; -extern int panic_on_io_nmi; -extern int panic_on_warn; -extern unsigned long panic_on_taint; -extern bool panic_on_taint_nousertaint; -extern int sysctl_panic_on_rcu_stall; -extern int sysctl_max_rcu_stall_to_panic; -extern int sysctl_panic_on_stackoverflow; - -extern bool crash_kexec_post_notifiers; - -/* - * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It - * holds a CPU number which is executing panic() currently. A value of - * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). - */ -extern atomic_t panic_cpu; -#define PANIC_CPU_INVALID -1 -/* - * Only to be used by arch init code. If the user over-wrote the default - * CONFIG_PANIC_TIMEOUT, honor it. - */ -static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) -{ - if (panic_timeout == arch_default_timeout) - panic_timeout = timeout; -} -extern const char *print_tainted(void); -enum lockdep_ok { - LOCKDEP_STILL_OK, - LOCKDEP_NOW_UNRELIABLE -}; -extern void add_taint(unsigned flag, enum lockdep_ok); -extern int test_taint(unsigned flag); -extern unsigned long get_taint(void); extern int root_mountflags; extern bool early_boot_irqs_disabled; @@ -436,36 +384,6 @@ extern enum system_states { SYSTEM_SUSPEND, } system_state; -/* This cannot be an enum because some may be used in assembly source. */ -#define TAINT_PROPRIETARY_MODULE 0 -#define TAINT_FORCED_MODULE 1 -#define TAINT_CPU_OUT_OF_SPEC 2 -#define TAINT_FORCED_RMMOD 3 -#define TAINT_MACHINE_CHECK 4 -#define TAINT_BAD_PAGE 5 -#define TAINT_USER 6 -#define TAINT_DIE 7 -#define TAINT_OVERRIDDEN_ACPI_TABLE 8 -#define TAINT_WARN 9 -#define TAINT_CRAP 10 -#define TAINT_FIRMWARE_WORKAROUND 11 -#define TAINT_OOT_MODULE 12 -#define TAINT_UNSIGNED_MODULE 13 -#define TAINT_SOFTLOCKUP 14 -#define TAINT_LIVEPATCH 15 -#define TAINT_AUX 16 -#define TAINT_RANDSTRUCT 17 -#define TAINT_FLAGS_COUNT 18 -#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) - -struct taint_flag { - char c_true; /* character printed when tainted */ - char c_false; /* character printed when not tainted */ - bool module; /* also show as a per-module taint flag */ -}; - -extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; - extern const char hex_asc[]; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] --- /dev/null +++ a/include/linux/panic.h @@ -0,0 +1,98 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_PANIC_H +#define _LINUX_PANIC_H + +#include <linux/compiler_attributes.h> +#include <linux/types.h> + +struct pt_regs; + +extern long (*panic_blink)(int state); +__printf(1, 2) +void panic(const char *fmt, ...) __noreturn __cold; +void nmi_panic(struct pt_regs *regs, const char *msg); +extern void oops_enter(void); +extern void oops_exit(void); +extern bool oops_may_print(void); + +#ifdef CONFIG_SMP +extern unsigned int sysctl_oops_all_cpu_backtrace; +#else +#define sysctl_oops_all_cpu_backtrace 0 +#endif /* CONFIG_SMP */ + +extern int panic_timeout; +extern unsigned long panic_print; +extern int panic_on_oops; +extern int panic_on_unrecovered_nmi; +extern int panic_on_io_nmi; +extern int panic_on_warn; + +extern unsigned long panic_on_taint; +extern bool panic_on_taint_nousertaint; + +extern int sysctl_panic_on_rcu_stall; +extern int sysctl_max_rcu_stall_to_panic; +extern int sysctl_panic_on_stackoverflow; + +extern bool crash_kexec_post_notifiers; + +/* + * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It + * holds a CPU number which is executing panic() currently. A value of + * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). + */ +extern atomic_t panic_cpu; +#define PANIC_CPU_INVALID -1 + +/* + * Only to be used by arch init code. If the user over-wrote the default + * CONFIG_PANIC_TIMEOUT, honor it. + */ +static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) +{ + if (panic_timeout == arch_default_timeout) + panic_timeout = timeout; +} + +/* This cannot be an enum because some may be used in assembly source. */ +#define TAINT_PROPRIETARY_MODULE 0 +#define TAINT_FORCED_MODULE 1 +#define TAINT_CPU_OUT_OF_SPEC 2 +#define TAINT_FORCED_RMMOD 3 +#define TAINT_MACHINE_CHECK 4 +#define TAINT_BAD_PAGE 5 +#define TAINT_USER 6 +#define TAINT_DIE 7 +#define TAINT_OVERRIDDEN_ACPI_TABLE 8 +#define TAINT_WARN 9 +#define TAINT_CRAP 10 +#define TAINT_FIRMWARE_WORKAROUND 11 +#define TAINT_OOT_MODULE 12 +#define TAINT_UNSIGNED_MODULE 13 +#define TAINT_SOFTLOCKUP 14 +#define TAINT_LIVEPATCH 15 +#define TAINT_AUX 16 +#define TAINT_RANDSTRUCT 17 +#define TAINT_FLAGS_COUNT 18 +#define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) + +struct taint_flag { + char c_true; /* character printed when tainted */ + char c_false; /* character printed when not tainted */ + bool module; /* also show as a per-module taint flag */ +}; + +extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; + +enum lockdep_ok { + LOCKDEP_STILL_OK, + LOCKDEP_NOW_UNRELIABLE, +}; + +extern const char *print_tainted(void); +extern void add_taint(unsigned flag, enum lockdep_ok); +extern int test_taint(unsigned flag); +extern unsigned long get_taint(void); + +#endif /* _LINUX_PANIC_H */ --- /dev/null +++ a/include/linux/panic_notifier.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_PANIC_NOTIFIERS_H +#define _LINUX_PANIC_NOTIFIERS_H + +#include <linux/notifier.h> +#include <linux/types.h> + +extern struct atomic_notifier_head panic_notifier_list; + +extern bool crash_kexec_post_notifiers; + +#endif /* _LINUX_PANIC_NOTIFIERS_H */ --- a/include/linux/thread_info.h~kernelh-split-out-panic-and-oops-helpers +++ a/include/linux/thread_info.h @@ -9,6 +9,7 @@ #define _LINUX_THREAD_INFO_H #include <linux/types.h> +#include <linux/limits.h> #include <linux/bug.h> #include <linux/restart_block.h> #include <linux/errno.h> --- a/kernel/hung_task.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/hung_task.c @@ -15,6 +15,7 @@ #include <linux/kthread.h> #include <linux/lockdep.h> #include <linux/export.h> +#include <linux/panic_notifier.h> #include <linux/sysctl.h> #include <linux/suspend.h> #include <linux/utsname.h> --- a/kernel/kexec_core.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/kexec_core.c @@ -26,6 +26,7 @@ #include <linux/suspend.h> #include <linux/device.h> #include <linux/freezer.h> +#include <linux/panic_notifier.h> #include <linux/pm.h> #include <linux/cpu.h> #include <linux/uaccess.h> --- a/kernel/panic.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/panic.c @@ -23,6 +23,7 @@ #include <linux/reboot.h> #include <linux/delay.h> #include <linux/kexec.h> +#include <linux/panic_notifier.h> #include <linux/sched.h> #include <linux/sysrq.h> #include <linux/init.h> --- a/kernel/rcu/tree.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/rcu/tree.c @@ -32,6 +32,8 @@ #include <linux/export.h> #include <linux/completion.h> #include <linux/moduleparam.h> +#include <linux/panic.h> +#include <linux/panic_notifier.h> #include <linux/percpu.h> #include <linux/notifier.h> #include <linux/cpu.h> --- a/kernel/sysctl.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/sysctl.c @@ -27,6 +27,7 @@ #include <linux/sysctl.h> #include <linux/bitmap.h> #include <linux/signal.h> +#include <linux/panic.h> #include <linux/printk.h> #include <linux/proc_fs.h> #include <linux/security.h> --- a/kernel/trace/trace.c~kernelh-split-out-panic-and-oops-helpers +++ a/kernel/trace/trace.c @@ -39,6 +39,7 @@ #include <linux/slab.h> #include <linux/ctype.h> #include <linux/init.h> +#include <linux/panic_notifier.h> #include <linux/poll.h> #include <linux/nmi.h> #include <linux/fs.h> _
