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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-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: [for-next][PATCH 09/15] ftrace: Assign ftrace_list_end to ftrace_ops_list type cast to RCU
Date: Thu, 06 Jun 2024 08:10:13 -0400	[thread overview]
Message-ID: <20240606121105.828859387@goodmis.org> (raw)
In-Reply-To: 20240606121004.857581251@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 *

Link: https://lore.kernel.org/linux-trace-kernel/20240605202708.450784356@goodmis.org

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
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 9c4d01b1bb68..034242675e7b 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



  parent reply	other threads:[~2024-06-06 12:11 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-06 12:10 [for-next][PATCH 00/15] ftrace: Updates for 6.11 Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 01/15] ftrace: Add back ftrace_update_trampoline() to ftrace_update_pid_func() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 02/15] ftrace/selftests: Fix pid test with function graph not showing pids Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 03/15] ftrace: Rename dup_hash() and comment it Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 04/15] ftrace: Remove "ftrace_hash" parameter from __ftrace_hash_rec_update() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 05/15] ftrace: Add comments to ftrace_hash_rec_disable/enable() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 06/15] ftrace: Convert "inc" parameter to bool in ftrace_hash_rec_update_modify() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 07/15] ftrace: Add comments to ftrace_hash_move() and friends Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 08/15] ftrace: Declare function_trace_op in header to quiet sparse warning Steven Rostedt
2024-06-06 12:10 ` Steven Rostedt [this message]
2024-06-06 12:10 ` [for-next][PATCH 10/15] ftrace: Assign RCU list variable with rcu_assign_ptr() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 11/15] ftrace: Fix prototypes for ftrace_startup/shutdown_subops() Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 12/15] function_graph: Make fgraph_do_direct static key static Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 13/15] function_graph: Do not update pid func if CONFIG_DYNAMIC_FTRACE not enabled Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 14/15] ftrace: Hide one more entry in stack trace when ftrace_pid is enabled Steven Rostedt
2024-06-06 12:10 ` [for-next][PATCH 15/15] fgraph: Remove some unused functions Steven Rostedt

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