diff options
| -rw-r--r-- | include/trace/events/initcall.h | 66 | ||||
| -rw-r--r-- | init/main.c | 7 |
2 files changed, 73 insertions, 0 deletions
diff --git a/include/trace/events/initcall.h b/include/trace/events/initcall.h new file mode 100644 index 000000000000..8d6cf10d27c9 --- /dev/null +++ b/include/trace/events/initcall.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM initcall + +#if !defined(_TRACE_INITCALL_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_INITCALL_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(initcall_level, + + TP_PROTO(const char *level), + + TP_ARGS(level), + + TP_STRUCT__entry( + __string(level, level) + ), + + TP_fast_assign( + __assign_str(level, level); + ), + + TP_printk("level=%s", __get_str(level)) +); + +TRACE_EVENT(initcall_start, + + TP_PROTO(initcall_t func), + + TP_ARGS(func), + + TP_STRUCT__entry( + __field(initcall_t, func) + ), + + TP_fast_assign( + __entry->func = func; + ), + + TP_printk("func=%pS", __entry->func) +); + +TRACE_EVENT(initcall_finish, + + TP_PROTO(initcall_t func, int ret), + + TP_ARGS(func, ret), + + TP_STRUCT__entry( + __field(initcall_t, func) + __field(int, ret) + ), + + TP_fast_assign( + __entry->func = func; + __entry->ret = ret; + ), + + TP_printk("func=%pS ret=%d", __entry->func, __entry->ret) +); + +#endif /* if !defined(_TRACE_GPIO_H) || defined(TRACE_HEADER_MULTI_READ) */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/init/main.c b/init/main.c index 0ebdd5f15be8..2af8f2bb5ca8 100644 --- a/init/main.c +++ b/init/main.c @@ -97,6 +97,9 @@ #include <asm/sections.h> #include <asm/cacheflush.h> +#define CREATE_TRACE_POINTS +#include <trace/events/initcall.h> + static int kernel_init(void *); extern void init_IRQ(void); @@ -827,10 +830,12 @@ int __init_or_module do_one_initcall(initcall_t fn) if (initcall_blacklisted(fn)) return -EPERM; + trace_initcall_start(fn); if (initcall_debug) ret = do_one_initcall_debug(fn); else ret = fn(); + trace_initcall_finish(fn, ret); msgbuf[0] = 0; @@ -895,6 +900,7 @@ static void __init do_initcall_level(int level) level, level, NULL, &repair_env_string); + trace_initcall_level(initcall_level_names[level]); for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++) do_one_initcall(*fn); } @@ -929,6 +935,7 @@ static void __init do_pre_smp_initcalls(void) { initcall_t *fn; + trace_initcall_level("early"); for (fn = __initcall_start; fn < __initcall0_start; fn++) do_one_initcall(*fn); } |