| /* 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 */ |