projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3f5ec136 FW |
1 | #ifndef _LINUX_TRACE_BOOT_H |
| 2 | #define _LINUX_TRACE_BOOT_H | |
| 3 | ||
| 4 | /* | |
| 5 | * Structure which defines the trace of an initcall. | |
| 6 | * You don't have to fill the func field since it is | |
| 7 | * only used internally by the tracer. | |
| 8 | */ | |
| 9 | struct boot_trace { | |
| 10 | pid_t caller; | |
| 11 | char func[KSYM_NAME_LEN]; | |
| 12 | int result; | |
| 13 | unsigned long long duration; /* usecs */ | |
| 14 | ktime_t calltime; | |
| 15 | ktime_t rettime; | |
| 16 | }; | |
| 17 | ||
| 18 | #ifdef CONFIG_BOOT_TRACER | |
| 19 | /* Append the trace on the ring-buffer */ | |
| 20 | extern void trace_boot(struct boot_trace *it, initcall_t fn); | |
| 21 | ||
| 22 | /* Tells the tracer that smp_pre_initcall is finished. | |
| 23 | * So we can start the tracing | |
| 24 | */ | |
| 25 | extern void start_boot_trace(void); | |
| 26 | ||
| 27 | /* Resume the tracing of other necessary events | |
| 28 | * such as sched switches | |
| 29 | */ | |
| 30 | extern void enable_boot_trace(void); | |
| 31 | ||
| 32 | /* Suspend this tracing. Actually, only sched_switches tracing have | |
| 33 | * to be suspended. Initcalls doesn't need it.) | |
| 34 | */ | |
| 35 | extern void disable_boot_trace(void); | |
| 36 | #else | |
| 37 | static inline void trace_boot(struct boot_trace *it, initcall_t fn) { } | |
| 38 | static inline void start_boot_trace(void) { } | |
| 39 | static inline void enable_boot_trace(void) { } | |
| 40 | static inline void disable_boot_trace(void) { } | |
| 41 | #endif /* CONFIG_BOOT_TRACER */ | |
| 42 | ||
| 43 | #endif /* __LINUX_TRACE_BOOT_H */ |