[bpf-next,v4,01/27] x86/ftrace: Remove extra orig rax move

Message ID	20210826193922.66204-2-jolsa@kernel.org
State	New
Headers	show Return-Path: <netdev-owner@kernel.org> From: Jiri Olsa <jolsa@redhat.com> To: Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>, Andrii Nakryiko <andriin@fb.com>, "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>, John Fastabend <john.fastabend@gmail.com>, KP Singh <kpsingh@chromium.org>, Daniel Xu <dxu@dxuuu.xyz>, Viktor Malik <vmalik@redhat.com> Subject: [PATCH bpf-next v4 01/27] x86/ftrace: Remove extra orig rax move Date: Thu, 26 Aug 2021 21:38:56 +0200 Message-Id: <20210826193922.66204-2-jolsa@kernel.org> In-Reply-To: <20210826193922.66204-1-jolsa@kernel.org> References: <20210826193922.66204-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	[bpf-next,v4,01/27] x86/ftrace: Remove extra orig rax move \| expand [bpf-next,v4,01/27] x86/ftrace: Remove extra orig rax move [bpf-next,v4,03/27] x86/ftrace: Make function graph use ftrace directly [bpf-next,v4,05/27] ftrace: Add ftrace_add_rec_direct function [bpf-next,v4,07/27] ftrace: Add multi direct modify interface [bpf-next,v4,09/27] bpf: Add support to load multi func tracing program [bpf-next,v4,11/27] bpf: Factor out bpf_trampoline_init function [bpf-next,v4,13/27] bpf: Factor out __bpf_trampoline_put function [bpf-next,v4,15/27] bpf, x64: Allow to use caller address from stack [bpf-next,v4,17/27] bpf: Add multi trampoline attach support [bpf-next,v4,19/27] bpf: Attach multi trampoline with ftrace_ops [bpf-next,v4,21/27] libbpf: Add support to link multi func tracing program [bpf-next,v4,23/27] selftests/bpf: Add fexit multi func test [bpf-next,v4,24/27] selftests/bpf: Add fentry/fexit multi func test [bpf-next,v4,26/27] selftests/bpf: Add attach multi func test

Message ID

20210826193922.66204-2-jolsa@kernel.org

State

New

Headers

From: Jiri Olsa <jolsa@redhat.com>
To: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>, Andrii Nakryiko <andriin@fb.com>,
	"Steven Rostedt (VMware)" <rostedt@goodmis.org>
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
	Martin KaFai Lau <kafai@fb.com>,
	Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@chromium.org>, Daniel Xu <dxu@dxuuu.xyz>,
	Viktor Malik <vmalik@redhat.com>
Subject: [PATCH bpf-next v4 01/27] x86/ftrace: Remove extra orig rax move
Date: Thu, 26 Aug 2021 21:38:56 +0200
Message-Id: <20210826193922.66204-2-jolsa@kernel.org>
In-Reply-To: <20210826193922.66204-1-jolsa@kernel.org>
References: <20210826193922.66204-1-jolsa@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

[bpf-next,v4,01/27] x86/ftrace: Remove extra orig rax move | expand

Commit Message

Jiri Olsa Aug. 26, 2021, 7:38 p.m. UTC

There's identical move 2 lines earlier.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 arch/x86/kernel/ftrace_64.S | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S
index 7c273846c687..a8eb084a7a9a 100644
--- a/arch/x86/kernel/ftrace_64.S
+++ b/arch/x86/kernel/ftrace_64.S
@@ -251,7 +251,6 @@  SYM_INNER_LABEL(ftrace_regs_call, SYM_L_GLOBAL)
 	 * If ORIG_RAX is anything but zero, make this a call to that.
 	 * See arch_ftrace_set_direct_caller().
 	 */
-	movq ORIG_RAX(%rsp), %rax
 	testq	%rax, %rax
 SYM_INNER_LABEL(ftrace_regs_caller_jmp, SYM_L_GLOBAL)
 	jnz	1f

[bpf-next,v4,01/27] x86/ftrace: Remove extra orig rax move

Commit Message

Patch