linux-kernel - [tip: x86/asm] percpu: Remove PER_CPU_FIRST

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Message-ID: <173988070299.10177.12068715152153299676.tip-bot2@tip-bot2>
Date: Tue, 18 Feb 2025 12:11:42 -0000
From: "tip-bot2 for Brian Gerst" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Brian Gerst <brgerst@...il.com>, Ingo Molnar <mingo@...nel.org>,
 Ard Biesheuvel <ardb@...nel.org>,
 Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/asm] percpu: Remove PER_CPU_FIRST_SECTION

The following commit has been merged into the x86/asm branch of tip:

Commit-ID:     95b0916118106054e1f3d5d7f8628ef3dc0b3c02
Gitweb:        https://git.kernel.org/tip/95b0916118106054e1f3d5d7f8628ef3dc0b3c02
Author:        Brian Gerst <brgerst@...il.com>
AuthorDate:    Thu, 23 Jan 2025 14:07:44 -05:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 18 Feb 2025 10:15:53 +01:00

percpu: Remove PER_CPU_FIRST_SECTION

x86-64 was the last user.

Signed-off-by: Brian Gerst <brgerst@...il.com>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Reviewed-by: Ard Biesheuvel <ardb@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: https://lore.kernel.org/r/20250123190747.745588-13-brgerst@gmail.com
---
 include/asm-generic/vmlinux.lds.h |  1 -
 include/linux/percpu-defs.h       | 12 ------------
 2 files changed, 13 deletions(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 02a4adb..a3c77a1 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -1062,7 +1062,6 @@ defined(CONFIG_AUTOFDO_CLANG) || defined(CONFIG_PROPELLER_CLANG)
  */
 #define PERCPU_INPUT(cacheline)						\
 	__per_cpu_start = .;						\
-	*(.data..percpu..first)						\
 	. = ALIGN(PAGE_SIZE);						\
 	*(.data..percpu..page_aligned)					\
 	. = ALIGN(cacheline);						\
diff --git a/include/linux/percpu-defs.h b/include/linux/percpu-defs.h
index 5b520fe..40d34e0 100644
--- a/include/linux/percpu-defs.h
+++ b/include/linux/percpu-defs.h
@@ -26,13 +26,11 @@
 #define PER_CPU_SHARED_ALIGNED_SECTION "..shared_aligned"
 #define PER_CPU_ALIGNED_SECTION "..shared_aligned"
 #endif
-#define PER_CPU_FIRST_SECTION "..first"
 
 #else
 
 #define PER_CPU_SHARED_ALIGNED_SECTION ""
 #define PER_CPU_ALIGNED_SECTION "..shared_aligned"
-#define PER_CPU_FIRST_SECTION ""
 
 #endif
 
@@ -115,16 +113,6 @@
 	DEFINE_PER_CPU_SECTION(type, name, "")
 
 /*
- * Declaration/definition used for per-CPU variables that must come first in
- * the set of variables.
- */
-#define DECLARE_PER_CPU_FIRST(type, name)				\
-	DECLARE_PER_CPU_SECTION(type, name, PER_CPU_FIRST_SECTION)
-
-#define DEFINE_PER_CPU_FIRST(type, name)				\
-	DEFINE_PER_CPU_SECTION(type, name, PER_CPU_FIRST_SECTION)
-
-/*
  * Declaration/definition used for per-CPU variables that must be cacheline
  * aligned under SMP conditions so that, whilst a particular instance of the
  * data corresponds to a particular CPU, inefficiencies due to direct access by