projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| f39650de AS |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_PANIC_H | |
| 3 | #define _LINUX_PANIC_H | |
| 4 | ||
| 5 | #include <linux/compiler_attributes.h> | |
| 6 | #include <linux/types.h> | |
| 7 | ||
| 8 | struct pt_regs; | |
| 9 | ||
| 10 | extern long (*panic_blink)(int state); | |
| 11 | __printf(1, 2) | |
| 12 | void panic(const char *fmt, ...) __noreturn __cold; | |
| 13 | void nmi_panic(struct pt_regs *regs, const char *msg); | |
| 14 | extern void oops_enter(void); | |
| 15 | extern void oops_exit(void); | |
| 16 | extern bool oops_may_print(void); | |
| 17 | ||
| 18 | #ifdef CONFIG_SMP | |
| 19 | extern unsigned int sysctl_oops_all_cpu_backtrace; | |
| 20 | #else | |
| 21 | #define sysctl_oops_all_cpu_backtrace 0 | |
| 22 | #endif /* CONFIG_SMP */ | |
| 23 | ||
| 24 | extern int panic_timeout; | |
| 25 | extern unsigned long panic_print; | |
| 26 | extern int panic_on_oops; | |
| 27 | extern int panic_on_unrecovered_nmi; | |
| 28 | extern int panic_on_io_nmi; | |
| 29 | extern int panic_on_warn; | |
| 30 | ||
| 31 | extern unsigned long panic_on_taint; | |
| 32 | extern bool panic_on_taint_nousertaint; | |
| 33 | ||
| 34 | extern int sysctl_panic_on_rcu_stall; | |
| 35 | extern int sysctl_max_rcu_stall_to_panic; | |
| 36 | extern int sysctl_panic_on_stackoverflow; | |
| 37 | ||
| 38 | extern bool crash_kexec_post_notifiers; | |
| 39 | ||
| 40 | /* | |
| 41 | * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It | |
| 42 | * holds a CPU number which is executing panic() currently. A value of | |
| 43 | * PANIC_CPU_INVALID means no CPU has entered panic() or crash_kexec(). | |
| 44 | */ | |
| 45 | extern atomic_t panic_cpu; | |
| 46 | #define PANIC_CPU_INVALID -1 | |
| 47 | ||
| 48 | /* | |
| 49 | * Only to be used by arch init code. If the user over-wrote the default | |
| 50 | * CONFIG_PANIC_TIMEOUT, honor it. | |
| 51 | */ | |
| 52 | static inline void set_arch_panic_timeout(int timeout, int arch_default_timeout) | |
| 53 | { | |
| 54 | if (panic_timeout == arch_default_timeout) | |
| 55 | panic_timeout = timeout; | |
| 56 | } | |
| 57 | ||
| 58 | /* This cannot be an enum because some may be used in assembly source. */ | |
| 59 | #define TAINT_PROPRIETARY_MODULE 0 | |
| 60 | #define TAINT_FORCED_MODULE 1 | |
| 61 | #define TAINT_CPU_OUT_OF_SPEC 2 | |
| 62 | #define TAINT_FORCED_RMMOD 3 | |
| 63 | #define TAINT_MACHINE_CHECK 4 | |
| 64 | #define TAINT_BAD_PAGE 5 | |
| 65 | #define TAINT_USER 6 | |
| 66 | #define TAINT_DIE 7 | |
| 67 | #define TAINT_OVERRIDDEN_ACPI_TABLE 8 | |
| 68 | #define TAINT_WARN 9 | |
| 69 | #define TAINT_CRAP 10 | |
| 70 | #define TAINT_FIRMWARE_WORKAROUND 11 | |
| 71 | #define TAINT_OOT_MODULE 12 | |
| 72 | #define TAINT_UNSIGNED_MODULE 13 | |
| 73 | #define TAINT_SOFTLOCKUP 14 | |
| 74 | #define TAINT_LIVEPATCH 15 | |
| 75 | #define TAINT_AUX 16 | |
| 76 | #define TAINT_RANDSTRUCT 17 | |
| 77 | #define TAINT_FLAGS_COUNT 18 | |
| 78 | #define TAINT_FLAGS_MAX ((1UL << TAINT_FLAGS_COUNT) - 1) | |
| 79 | ||
| 80 | struct taint_flag { | |
| 81 | char c_true; /* character printed when tainted */ | |
| 82 | char c_false; /* character printed when not tainted */ | |
| 83 | bool module; /* also show as a per-module taint flag */ | |
| 84 | }; | |
| 85 | ||
| 86 | extern const struct taint_flag taint_flags[TAINT_FLAGS_COUNT]; | |
| 87 | ||
| 88 | enum lockdep_ok { | |
| 89 | LOCKDEP_STILL_OK, | |
| 90 | LOCKDEP_NOW_UNRELIABLE, | |
| 91 | }; | |
| 92 | ||
| 93 | extern const char *print_tainted(void); | |
| 94 | extern void add_taint(unsigned flag, enum lockdep_ok); | |
| 95 | extern int test_taint(unsigned flag); | |
| 96 | extern unsigned long get_taint(void); | |
| 97 | ||
| 98 | #endif /* _LINUX_PANIC_H */ |