From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Date: Sun, 18 Aug 2024 12:50:28 +0000 (+0900)
Subject: tracing: Fix function timing profiler to initialize hashtable
X-Git-Tag: v6.13-rc1~163^2~22
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c54a1a06daa78613519b4d24495b0d175b8af63f;p=thirdparty%2Fkernel%2Flinux.git

tracing: Fix function timing profiler to initialize hashtable

Since the new fgraph requires to initialize fgraph_ops.ops.func_hash before
calling register_ftrace_graph(), initialize it with default (tracing all
functions) parameter.

Cc: stable@vger.kernel.org
Fixes: 5fccc7552ccb ("ftrace: Add subops logic to allow one ops to manage many")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 4c28dd177ca65..d2dd71d04b8ac 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -883,6 +883,10 @@ static void profile_graph_return(struct ftrace_graph_ret *trace,
 }
 
 static struct fgraph_ops fprofiler_ops = {
+	.ops = {
+		.flags = FTRACE_OPS_FL_INITIALIZED,
+		INIT_OPS_HASH(fprofiler_ops.ops)
+	},
 	.entryfunc = &profile_graph_entry,
 	.retfunc = &profile_graph_return,
 };