From 0aeb1def44169cbe7119f26cf10b974a2046142e Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Sat, 25 May 2019 09:58:01 -0700 Subject: [PATCH] tracing: Make trace_get_fields() global trace_get_fields() is the only way to read tracepoint fields at run time, as their fields are defined at compile-time with macros. Make this function visible to all users and it will be used by trace event injection code to calculate the size of a tracepoint entry. Link: http://lkml.kernel.org/r/20190525165802.25944-4-xiyou.wangcong@gmail.com Cc: Ingo Molnar Signed-off-by: Cong Wang Signed-off-by: Steven Rostedt (VMware) --- include/linux/trace_events.h | 8 ++++++++ kernel/trace/trace_events.c | 8 -------- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h index 5c6f2a6..5150436 100644 --- a/include/linux/trace_events.h +++ b/include/linux/trace_events.h @@ -318,6 +318,14 @@ trace_event_name(struct trace_event_call *call) return call->name; } +static inline struct list_head * +trace_get_fields(struct trace_event_call *event_call) +{ + if (!event_call->class->get_fields) + return &event_call->class->fields; + return event_call->class->get_fields(event_call); +} + struct trace_array; struct trace_subsystem_dir; diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index edc72f3..c7506bc 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -70,14 +70,6 @@ static int system_refcount_dec(struct event_subsystem *system) #define while_for_each_event_file() \ } -static struct list_head * -trace_get_fields(struct trace_event_call *event_call) -{ - if (!event_call->class->get_fields) - return &event_call->class->fields; - return event_call->class->get_fields(event_call); -} - static struct ftrace_event_field * __find_event_field(struct list_head *head, char *name) { -- 2.7.4