Messages in this thread Patch in this message | | | Date | Tue, 16 Jul 2019 15:00:19 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 5/5] tracing: Make trace_get_fields() global |
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From: Cong Wang <xiyou.wangcong@gmail.com>
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 <mingo@redhat.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- 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 5c6f2a6c8cd2..5150436783e8 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 edc72f3b080c..c7506bc81b75 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) { -- 2.20.1
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