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ring_buffer: Remove unused "event" parameter

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After commit a389d86f7f ("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>
This commit is contained in:
Song Chen 2022-10-20 22:06:51 +08:00 committed by Steven Rostedt (Google)
parent a01fdc897f
commit 04aabc32fb
4 changed files with 8 additions and 11 deletions
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3
include/linux/ring_buffer.h
View File

@ -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);

12
kernel/trace/ring_buffer.c
View File

@ -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;
}

2
kernel/trace/ring_buffer_benchmark.c
View File

@ -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();

2
kernel/trace/trace.c
View File

@ -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);
}
/**