linux-kernel - [PATCH v2 1/2] riscv: fgraph: Select HAVE_FUNCTION_GRAPH_TRACER depends on HAVE_DYNAMIC_FTRACE_WITH

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Message-Id: <20250317031214.4138436-1-pulehui@huaweicloud.com>
Date: Mon, 17 Mar 2025 03:12:13 +0000
From: Pu Lehui <pulehui@...weicloud.com>
To: linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Palmer Dabbelt <palmer@...belt.com>,
	Alexandre Ghiti <alex@...ti.fr>,
	Björn Töpel <bjorn@...nel.org>,
	"Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
	"Steven Rostedt (Google)" <rostedt@...dmis.org>,
	Naresh Kamboju <naresh.kamboju@...aro.org>,
	Pu Lehui <pulehui@...wei.com>
Subject: [PATCH v2 1/2] riscv: fgraph: Select HAVE_FUNCTION_GRAPH_TRACER depends on HAVE_DYNAMIC_FTRACE_WITH_ARGS

From: Pu Lehui <pulehui@...wei.com>

Currently, fgraph on riscv relies on the infrastructure of
DYNAMIC_FTRACE_WITH_ARGS. However, DYNAMIC_FTRACE_WITH_ARGS may be
turned off on riscv, which will cause the enabled fgraph to be abnormal.
Therefore, let's select HAVE_FUNCTION_GRAPH_TRACER depends on
HAVE_DYNAMIC_FTRACE_WITH_ARGS.

Fixes: a3ed4157b7d8 ("fgraph: Replace fgraph_ret_regs with ftrace_regs")
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503160820.dvqMpH0g-lkp@intel.com/
Signed-off-by: Pu Lehui <pulehui@...wei.com>
---
 arch/riscv/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 7612c52e9b1e..5d63abc499ce 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -149,7 +149,7 @@ config RISCV
 	select HAVE_DYNAMIC_FTRACE_WITH_ARGS if HAVE_DYNAMIC_FTRACE
 	select HAVE_FTRACE_GRAPH_FUNC
 	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
-	select HAVE_FUNCTION_GRAPH_TRACER
+	select HAVE_FUNCTION_GRAPH_TRACER if HAVE_DYNAMIC_FTRACE_WITH_ARGS
 	select HAVE_FUNCTION_GRAPH_FREGS
 	select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION
 	select HAVE_EBPF_JIT if MMU
-- 
2.34.1