diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 12:21:10 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 12:21:10 -0800 |
commit | b0f4b285d7ed174804658539129a834270f4829a (patch) | |
tree | be7f8dca58075aba2c6a137fcfd4d44c5c333efc /include/trace/boot.h | |
parent | be9c5ae4eeec2e85527e95647348b8ea4eb25128 (diff) | |
parent | 5250d329e38cdf7580faeb9c53c17d3588d7d19c (diff) |
Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits)
sched, trace: update trace_sched_wakeup()
tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3
Revert "x86: disable X86_PTRACE_BTS"
ring-buffer: prevent false positive warning
ring-buffer: fix dangling commit race
ftrace: enable format arguments checking
x86, bts: memory accounting
x86, bts: add fork and exit handling
ftrace: introduce tracing_reset_online_cpus() helper
tracing: fix warnings in kernel/trace/trace_sched_switch.c
tracing: fix warning in kernel/trace/trace.c
tracing/ring-buffer: remove unused ring_buffer size
trace: fix task state printout
ftrace: add not to regex on filtering functions
trace: better use of stack_trace_enabled for boot up code
trace: add a way to enable or disable the stack tracer
x86: entry_64 - introduce FTRACE_ frame macro v2
tracing/ftrace: add the printk-msg-only option
tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()
x86, bts: correctly report invalid bts records
...
Fixed up trivial conflict in scripts/recordmcount.pl due to SH bits
being already partly merged by the SH merge.
Diffstat (limited to 'include/trace/boot.h')
-rw-r--r-- | include/trace/boot.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/trace/boot.h b/include/trace/boot.h new file mode 100644 index 00000000000..088ea089e31 --- /dev/null +++ b/include/trace/boot.h @@ -0,0 +1,60 @@ +#ifndef _LINUX_TRACE_BOOT_H +#define _LINUX_TRACE_BOOT_H + +#include <linux/module.h> +#include <linux/kallsyms.h> +#include <linux/init.h> + +/* + * 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 */ |