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Subject[for-next][PATCH 3/5] tracing: Pass type into tracing_generic_entry_update()
From: Cong Wang <xiyou.wangcong@gmail.com>

All callers of tracing_generic_entry_update() have to initialize
entry->type, so let's just simply move it inside.
Link: http://lkml.kernel.org/r/20190525165802.25944-2-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 | 1 +
kernel/trace/trace.c | 8 ++++----
kernel/trace/trace_event_perf.c | 3 +--
3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 8a62731673f7..5c6f2a6c8cd2 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -142,6 +142,7 @@ enum print_line_t {
enum print_line_t trace_handle_return(struct trace_seq *s);

void tracing_generic_entry_update(struct trace_entry *entry,
+ unsigned short type,
unsigned long flags,
int pc);
struct trace_event_file;
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 77b9c4ca5faa..6b62e1718548 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -743,8 +743,7 @@ trace_event_setup(struct ring_buffer_event *event,
{
struct trace_entry *ent = ring_buffer_event_data(event);

- tracing_generic_entry_update(ent, flags, pc);
- ent->type = type;
+ tracing_generic_entry_update(ent, type, flags, pc);
}

static __always_inline struct ring_buffer_event *
@@ -2312,13 +2311,14 @@ enum print_line_t trace_handle_return(struct trace_seq *s)
EXPORT_SYMBOL_GPL(trace_handle_return);

void
-tracing_generic_entry_update(struct trace_entry *entry, unsigned long flags,
- int pc)
+tracing_generic_entry_update(struct trace_entry *entry, unsigned short type,
+ unsigned long flags, int pc)
{
struct task_struct *tsk = current;

entry->preempt_count = pc & 0xff;
entry->pid = (tsk) ? tsk->pid : 0;
+ entry->type = type;
entry->flags =
#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
(irqs_disabled_flags(flags) ? TRACE_FLAG_IRQS_OFF : 0) |
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index 4629a6104474..0892e38ed6fb 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -416,8 +416,7 @@ void perf_trace_buf_update(void *record, u16 type)
unsigned long flags;

local_save_flags(flags);
- tracing_generic_entry_update(entry, flags, pc);
- entry->type = type;
+ tracing_generic_entry_update(entry, type, flags, pc);
}
NOKPROBE_SYMBOL(perf_trace_buf_update);

--
2.20.1

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