From 7996a3d79d55b7f879dfd62e202bbfe2963718d3 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sat, 27 Jul 2013 22:15:01 +0000 Subject: really properly move files --- libdde-linux26/contrib/include/trace/boot.h | 60 +++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 libdde-linux26/contrib/include/trace/boot.h (limited to 'libdde-linux26/contrib/include/trace/boot.h') diff --git a/libdde-linux26/contrib/include/trace/boot.h b/libdde-linux26/contrib/include/trace/boot.h new file mode 100644 index 00000000..088ea089 --- /dev/null +++ b/libdde-linux26/contrib/include/trace/boot.h @@ -0,0 +1,60 @@ +#ifndef _LINUX_TRACE_BOOT_H +#define _LINUX_TRACE_BOOT_H + +#include +#include +#include + +/* + * Structure which defines the trace of an initcall + * while it is called. + * You don't have to fill the func field since it is + * only used internally by the tracer. + */ +struct boot_trace_call { + pid_t caller; + char func[KSYM_SYMBOL_LEN]; +}; + +/* + * Structure which defines the trace of an initcall + * while it returns. + */ +struct boot_trace_ret { + char func[KSYM_SYMBOL_LEN]; + int result; + unsigned long long duration; /* nsecs */ +}; + +#ifdef CONFIG_BOOT_TRACER +/* Append the traces on the ring-buffer */ +extern void trace_boot_call(struct boot_trace_call *bt, initcall_t fn); +extern void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn); + +/* Tells the tracer that smp_pre_initcall is finished. + * So we can start the tracing + */ +extern void start_boot_trace(void); + +/* Resume the tracing of other necessary events + * such as sched switches + */ +extern void enable_boot_trace(void); + +/* Suspend this tracing. Actually, only sched_switches tracing have + * to be suspended. Initcalls doesn't need it.) + */ +extern void disable_boot_trace(void); +#else +static inline +void trace_boot_call(struct boot_trace_call *bt, initcall_t fn) { } + +static inline +void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn) { } + +static inline void start_boot_trace(void) { } +static inline void enable_boot_trace(void) { } +static inline void disable_boot_trace(void) { } +#endif /* CONFIG_BOOT_TRACER */ + +#endif /* __LINUX_TRACE_BOOT_H */ -- cgit v1.2.3