Messages in this thread Patch in this message | | | From | Song Chen <> | Subject | [PATCH v2] trace/kprobe: remove duplicated calls of ring_buffer_event_data | Date | Wed, 19 Oct 2022 10:11:18 +0800 |
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Function __kprobe_trace_func calls ring_buffer_event_data to get a ring buffer, however, it has been done in above call trace_event_buffer_reserve. So does __kretprobe_trace_func.
This patch removes those duplicated calls.
Signed-off-by: Song Chen <chensong_2000@189.cn> --- kernel/trace/trace_kprobe.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 23f7f0ec4f4c..f905829b856b 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1394,7 +1394,6 @@ __kprobe_trace_func(struct trace_kprobe *tk, struct pt_regs *regs, return; fbuffer.regs = regs; - entry = fbuffer.entry = ring_buffer_event_data(fbuffer.event); entry->ip = (unsigned long)tk->rp.kp.addr; store_trace_args(&entry[1], &tk->tp, regs, sizeof(*entry), dsize); @@ -1435,7 +1434,6 @@ __kretprobe_trace_func(struct trace_kprobe *tk, struct kretprobe_instance *ri, return; fbuffer.regs = regs; - entry = fbuffer.entry = ring_buffer_event_data(fbuffer.event); entry->func = (unsigned long)tk->rp.kp.addr; entry->ret_ip = get_kretprobe_retaddr(ri); store_trace_args(&entry[1], &tk->tp, regs, sizeof(*entry), dsize); -- 2.25.1
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