[for-next][PATCH 04/11] ring_buffer: Remove unused "event" parameter

Steven Rostedt
2022-11-24T14:51:49Z

From: Song Chen <chensong_2000@189.cn>

After commit a389d86f7fd0 ("ring-buffer: Have nested events still record
running time stamp"), the "event" parameter is no longer used in either
ring_buffer_unlock_commit() or rb_commit(). Best to remove it.

Link: https://lkml.kernel.org/r/1666274811-24138-1-git-send-email-chensong_2000@189.cn

Signed-off-by: Song Chen <chensong_2000@189.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
include/linux/ring_buffer.h | 3 +--
kernel/trace/ring_buffer.c | 12 +++++-------
kernel/trace/ring_buffer_benchmark.c | 2 +-
kernel/trace/trace.c | 2 +-
4 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 3c7d295746f6..782e14f62201 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -113,8 +113,7 @@ void ring_buffer_change_overwrite(struct trace_buffer *buffer, int val);

struct ring_buffer_event *ring_buffer_lock_reserve(struct trace_buffer *buffer,
unsigned long length);
-int ring_buffer_unlock_commit(struct trace_buffer *buffer,
- struct ring_buffer_event *event);
+int ring_buffer_unlock_commit(struct trace_buffer *buffer);
int ring_buffer_write(struct trace_buffer *buffer,
unsigned long length, void *data);

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index b21bf14bae9b..843818ee4814 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -3180,8 +3180,7 @@ static inline void rb_event_discard(struct ring_buffer_event *event)
event->time_delta = 1;
}

-static void rb_commit(struct ring_buffer_per_cpu *cpu_buffer,
- struct ring_buffer_event *event)
+static void rb_commit(struct ring_buffer_per_cpu *cpu_buffer)
{
local_inc(&cpu_buffer->entries);
rb_end_commit(cpu_buffer);
@@ -3383,15 +3382,14 @@ void ring_buffer_nest_end(struct trace_buffer *buffer)
*
* Must be paired with ring_buffer_lock_reserve.
*/
-int ring_buffer_unlock_commit(struct trace_buffer *buffer,
- struct ring_buffer_event *event)
+int ring_buffer_unlock_commit(struct trace_buffer *buffer)
{
struct ring_buffer_per_cpu *cpu_buffer;
int cpu = raw_smp_processor_id();

cpu_buffer = buffer->buffers[cpu];

- rb_commit(cpu_buffer, event);
+ rb_commit(cpu_buffer);

rb_wakeups(buffer, cpu_buffer);

@@ -3977,7 +3975,7 @@ int ring_buffer_write(struct trace_buffer *buffer,

memcpy(body, data, length);

- rb_commit(cpu_buffer, event);
+ rb_commit(cpu_buffer);

rb_wakeups(buffer, cpu_buffer);

@@ -5998,7 +5996,7 @@ static __init int rb_write_something(struct rb_test_data *data, bool nested)
}

out:
- ring_buffer_unlock_commit(data->buffer, event);
+ ring_buffer_unlock_commit(data->buffer);

return 0;
}
diff --git a/kernel/trace/ring_buffer_benchmark.c b/kernel/trace/ring_buffer_benchmark.c
index 78e576575b79..aef34673d79d 100644
--- a/kernel/trace/ring_buffer_benchmark.c
+++ b/kernel/trace/ring_buffer_benchmark.c
@@ -258,7 +258,7 @@ static void ring_buffer_producer(void)
hit++;
entry = ring_buffer_event_data(event);
*entry = smp_processor_id();
- ring_buffer_unlock_commit(buffer, event);
+ ring_buffer_unlock_commit(buffer);
}
}
end_time = ktime_get();
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5cfc95a52bc3..5c97dbef741b 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -999,7 +999,7 @@ __buffer_unlock_commit(struct trace_buffer *buffer, struct ring_buffer_event *ev
/* ring_buffer_unlock_commit() enables preemption */
preempt_enable_notrace();
} else
- ring_buffer_unlock_commit(buffer, event);
+ ring_buffer_unlock_commit(buffer);
}

/**
--
2.35.1