2024-06-05 20:39:17

by Steven Rostedt

[permalink] [raw]
Subject: [PATCH 2/6] ftrace: Assign ftrace_list_end to ftrace_ops_list type cast to RCU

From: "Steven Rostedt (Google)" <[email protected]>

Use a type cast to convert ftrace_list_end to RCU when assigning
ftrace_ops_list. This will quiet the sparse warning:

kernel/trace/ftrace.c:125:59: warning: incorrect type in initializer (different address spaces)
kernel/trace/ftrace.c:125:59: expected struct ftrace_ops [noderef] __rcu *[addressable] [toplevel] ftrace_ops_list
kernel/trace/ftrace.c:125:59: got struct ftrace_ops *

Signed-off-by: Steven Rostedt (Google) <[email protected]>
---
kernel/trace/ftrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index da7e6abf48b4..3af0b1feb873 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -122,7 +122,7 @@ static int ftrace_disabled __read_mostly;

DEFINE_MUTEX(ftrace_lock);

-struct ftrace_ops __rcu *ftrace_ops_list __read_mostly = &ftrace_list_end;
+struct ftrace_ops __rcu *ftrace_ops_list __read_mostly = (struct ftrace_ops __rcu *)&ftrace_list_end;
ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
struct ftrace_ops global_ops;

--
2.43.0