linux-kernel - [RFC PATCH v4 08/17] powerpc/ftrace: Move ftrace stub used for init text before

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Message-ID: <ce15b4bfe271a49b5edad8149be113bc78207fda.1720942106.git.naveen@kernel.org>
Date: Sun, 14 Jul 2024 13:57:44 +0530
From: Naveen N Rao <naveen@...nel.org>
To: <linuxppc-dev@...ts.ozlabs.org>,
	<linux-trace-kernel@...r.kernel.org>,
	<bpf@...r.kernel.org>,
	linux-kbuild@...r.kernel.org,
	<linux-kernel@...r.kernel.org>
Cc: Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Hari Bathini <hbathini@...ux.ibm.com>,
	Mahesh Salgaonkar <mahesh@...ux.ibm.com>,
	Vishal Chourasia <vishalc@...ux.ibm.com>
Subject: [RFC PATCH v4 08/17] powerpc/ftrace: Move ftrace stub used for init text before _einittext

Move the ftrace stub used to cover inittext before _einittext so that it
is within kernel text, as seen through core_kernel_text(). This is
required for a subsequent change to ftrace.

Signed-off-by: Naveen N Rao <naveen@...nel.org>
---
 arch/powerpc/kernel/vmlinux.lds.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index f420df7888a7..0aef9959f2cd 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -267,14 +267,13 @@ SECTIONS
 	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
 		_sinittext = .;
 		INIT_TEXT
-
+		*(.tramp.ftrace.init);
 		/*
 		 *.init.text might be RO so we must ensure this section ends on
 		 * a page boundary.
 		 */
 		. = ALIGN(PAGE_SIZE);
 		_einittext = .;
-		*(.tramp.ftrace.init);
 	} :text
 
 	/* .exit.text is discarded at runtime, not link time,
-- 
2.45.2