[PATCH 2/3] trace_kprobes: always show group name

[Lai Jiangshan]

Sometimes the group name is not "kprobes",
It'll be better if we can read it from tracing/kprobe_events.

# echo 'r:laijs/vfs_read vfs_read %ax' > kprobe_events
# cat kprobe_events
r:laijs/vfs_read vfs_read %ax=%ax

Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
---
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 79ce6a2..9e42f2a 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -758,7 +758,7 @@ static int probes_seq_show(struct seq_file *m, void *v)
 	char buf[MAX_ARGSTR_LEN + 1];
 
 	seq_printf(m, "%c", probe_is_return(tp) ? 'r' : 'p');
-	seq_printf(m, ":%s", tp->call.name);
+	seq_printf(m, ":%s/%s", tp->call.system, tp->call.name);
 
 	if (tp->symbol)
 		seq_printf(m, " %s+%u", probe_symbol(tp), tp->rp.kp.offset);


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