From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 2/6] ftrace: Assign ftrace_list_end to ftrace_ops_list type cast to RCU
Date: Wed, 05 Jun 2024 16:26:46 -0400 [thread overview]
Message-ID: <20240605202708.450784356@goodmis.org> (raw)
In-Reply-To: 20240605202644.293295925@goodmis.org
From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
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) <rostedt@goodmis.org>
---
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
next prev parent reply other threads:[~2024-06-05 20:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-05 20:26 [PATCH 0/6] ftrace: Minor fixes for sparse and kernel test robot Steven Rostedt
2024-06-05 20:26 ` [PATCH 1/6] ftrace: Declare function_trace_op in header to quiet sparse warning Steven Rostedt
2024-06-05 20:26 ` Steven Rostedt [this message]
2024-06-05 20:26 ` [PATCH 3/6] ftrace: Assign RCU list variable with rcu_assign_ptr() Steven Rostedt
2024-06-05 20:26 ` [PATCH 4/6] ftrace: Fix prototypes for ftrace_startup/shutdown_subops() Steven Rostedt
2024-06-05 20:26 ` [PATCH 5/6] function_graph: Make fgraph_do_direct static key static Steven Rostedt
2024-06-05 20:26 ` [PATCH 6/6] function_graph: Do not update pid func if CONFIG_DYNAMIC_FTRACE not enabled Steven Rostedt
2024-06-05 21:53 ` [PATCH 0/6] ftrace: Minor fixes for sparse and kernel test robot Masami Hiramatsu
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