lkml.org 
[lkml]   [2022]   [Oct]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] trace/kprobe: remove duplicated calls of ring_buffer_event_data
Date
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
\
 
 \ /
  Last update: 2022-10-19 04:11    [W:0.077 / U:0.400 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site