From: Naveen N Rao <naveen@kernel.org>
To: <linuxppc-dev@lists.ozlabs.org>,
<linux-trace-kernel@vger.kernel.org>, <bpf@vger.kernel.org>,
linux-kbuild@vger.kernel.org, <linux-kernel@vger.kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Daniel Borkmann <daniel@iogearbox.net>,
Masahiro Yamada <masahiroy@kernel.org>,
Nicholas Piggin <npiggin@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Andrii Nakryiko <andrii@kernel.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Vishal Chourasia <vishalc@linux.ibm.com>,
Mahesh Salgaonkar <mahesh@linux.ibm.com>,
Hari Bathini <hbathini@linux.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>
Subject: [RFC PATCH v4 08/17] powerpc/ftrace: Move ftrace stub used for init text before _einittext
Date: Sun, 14 Jul 2024 13:57:44 +0530 [thread overview]
Message-ID: <ce15b4bfe271a49b5edad8149be113bc78207fda.1720942106.git.naveen@kernel.org> (raw)
In-Reply-To: <cover.1720942106.git.naveen@kernel.org>
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@kernel.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
next prev parent reply other threads:[~2024-07-14 8:38 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-14 8:27 [RFC PATCH v4 00/17] powerpc: Core ftrace rework, support for ftrace direct and bpf trampolines Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 01/17] powerpc/trace: Account for -fpatchable-function-entry support by toolchain Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 02/17] powerpc/kprobes: Use ftrace to determine if a probe is at function entry Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 03/17] powerpc64/ftrace: Nop out additional 'std' instruction emitted by gcc v5.x Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 04/17] powerpc32/ftrace: Unify 32-bit and 64-bit ftrace entry code Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 05/17] powerpc/module_64: Convert #ifdef to IS_ENABLED() Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 06/17] powerpc/ftrace: Remove pointer to struct module from dyn_arch_ftrace Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 07/17] powerpc/ftrace: Skip instruction patching if the instructions are the same Naveen N Rao
2024-07-14 8:27 ` Naveen N Rao [this message]
2024-07-15 6:52 ` [RFC PATCH v4 08/17] powerpc/ftrace: Move ftrace stub used for init text before _einittext Nicholas Piggin
2024-07-14 8:27 ` [RFC PATCH v4 09/17] powerpc64/bpf: Fold bpf_jit_emit_func_call_hlp() into bpf_jit_emit_func_call_rel() Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 10/17] powerpc/ftrace: Add a postlink script to validate function tracer Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 11/17] kbuild: Add generic hook for architectures to use before the final vmlinux link Naveen N Rao
2024-07-15 7:29 ` Nicholas Piggin
2024-07-14 8:27 ` [RFC PATCH v4 12/17] powerpc64/ftrace: Move ftrace sequence out of line Naveen N Rao
2024-07-15 8:25 ` Nicholas Piggin
2024-07-15 12:42 ` David Laight
2024-08-27 9:12 ` Masahiro Yamada
2024-07-14 8:27 ` [RFC PATCH v4 13/17] powerpc64/ftrace: Support .text larger than 32MB with out-of-line stubs Naveen N Rao
2024-07-15 8:27 ` Nicholas Piggin
2024-07-14 8:27 ` [RFC PATCH v4 14/17] powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 15/17] powerpc/ftrace: Add support for DYNAMIC_FTRACE_WITH_DIRECT_CALLS Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 16/17] samples/ftrace: Add support for ftrace direct samples on powerpc Naveen N Rao
2024-07-14 8:27 ` [RFC PATCH v4 17/17] powerpc64/bpf: Add support for bpf trampolines Naveen N Rao
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