linux-kernel - [PATCH v3 7/7] riscv: ftrace: support PREEMPT

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Message-Id: <20241127172908.17149-8-andybnac@gmail.com>
Date: Thu, 28 Nov 2024 01:29:08 +0800
From: Andy Chiu <andybnac@...il.com>
To: Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>
Cc: linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	bjorn@...osinc.com,
	puranjay12@...il.com,
	alexghiti@...osinc.com,
	yongxuan.wang@...ive.com,
	greentime.hu@...ive.com,
	nick.hu@...ive.com,
	nylon.chen@...ive.com,
	tommy.wu@...ive.com,
	eric.lin@...ive.com,
	viccent.chen@...ive.com,
	zong.li@...ive.com,
	samuel.holland@...ive.com
Subject: [PATCH v3 7/7] riscv: ftrace: support PREEMPT

From: Andy Chiu <andy.chiu@...ive.com>

Now, we can safely enable dynamic ftrace with kernel preemption.

Signed-off-by: Andy Chiu <andy.chiu@...ive.com>
---
 arch/riscv/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 75a5ebde4427..554e4e363c54 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -148,7 +148,7 @@ config RISCV
 	select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
 	select HAVE_FUNCTION_GRAPH_TRACER
 	select HAVE_FUNCTION_GRAPH_RETVAL if HAVE_FUNCTION_GRAPH_TRACER
-	select HAVE_FUNCTION_TRACER if !XIP_KERNEL && !PREEMPTION
+	select HAVE_FUNCTION_TRACER if !XIP_KERNEL
 	select HAVE_EBPF_JIT if MMU
 	select HAVE_GUP_FAST if MMU
 	select HAVE_FUNCTION_ARG_ACCESS_API
-- 
2.39.3 (Apple Git-145)