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From: Brian Gerst <brgerst@gmail.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Ingo Molnar <mingo@kernel.org>, "H . Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>, Ard Biesheuvel <ardb@kernel.org>,
	Uros Bizjak <ubizjak@gmail.com>,
	Linus Torvalds <torvalds@linuxfoundation.org>,
	Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Brian Gerst <brgerst@gmail.com>
Subject: [PATCH v3 11/11] x86/smp: Move this_cpu_off to percpu hot section
Date: Mon,  3 Mar 2025 11:52:46 -0500	[thread overview]
Message-ID: <20250303165246.2175811-12-brgerst@gmail.com> (raw)
In-Reply-To: <20250303165246.2175811-1-brgerst@gmail.com>

No functional change.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
---
 arch/x86/include/asm/percpu.h  | 2 +-
 arch/x86/kernel/setup_percpu.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 6fbb52abb594..4f202cdd503d 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -584,7 +584,7 @@ do {									\
 #include <asm-generic/percpu.h>
 
 /* We can use this directly for local CPU (faster). */
-DECLARE_PER_CPU_READ_MOSTLY(unsigned long, this_cpu_off);
+DECLARE_PER_CPU_CACHE_HOT(unsigned long, this_cpu_off);
 
 #endif /* !__ASSEMBLY__ */
 
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 175afc3ffb12..bfa48e7a32a2 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -26,7 +26,7 @@
 DEFINE_PER_CPU_CACHE_HOT(int, cpu_number);
 EXPORT_PER_CPU_SYMBOL(cpu_number);
 
-DEFINE_PER_CPU_READ_MOSTLY(unsigned long, this_cpu_off);
+DEFINE_PER_CPU_CACHE_HOT(unsigned long, this_cpu_off);
 EXPORT_PER_CPU_SYMBOL(this_cpu_off);
 
 unsigned long __per_cpu_offset[NR_CPUS] __ro_after_init;
-- 
2.48.1


  parent reply	other threads:[~2025-03-03 16:53 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-03 16:52 [PATCH v3 00/11] Add a percpu subsection for cache hot data Brian Gerst
2025-03-03 16:52 ` [PATCH v3 01/11] percpu: Introduce percpu hot section Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 02/11] x86/percpu: Move pcpu_hot to " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 03/11] x86/preempt: Move preempt count " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 04/11] x86/smp: Move cpu number " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 05/11] x86/retbleed: Move call depth " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 06/11] x86/softirq: Move softirq_pending " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 07/11] x86/irq: Move irq stacks " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:34   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 08/11] x86/percpu: Move top_of_stack " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:33   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 09/11] x86/percpu: Move current_task " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:33   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` [PATCH v3 10/11] x86/stackprotector: Move __stack_chk_guard " Brian Gerst
2025-03-04  8:27   ` [tip: x86/core] " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:33   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 16:52 ` Brian Gerst [this message]
2025-03-04  8:27   ` [tip: x86/core] x86/smp: Move this_cpu_off " tip-bot2 for Brian Gerst
2025-03-04 10:36   ` tip-bot2 for Brian Gerst
2025-03-04 19:33   ` tip-bot2 for Brian Gerst
2025-03-04 19:43   ` tip-bot2 for Brian Gerst
2025-03-03 19:53 ` [PATCH v3 00/11] Add a percpu subsection for cache hot data Uros Bizjak
2025-03-03 20:38 ` Ingo Molnar
2025-03-03 20:55   ` Brian Gerst
2025-03-04  8:47     ` Ingo Molnar
2025-03-04  9:26       ` Brian Gerst
2025-03-04  9:47         ` Ingo Molnar
2025-03-04  9:52           ` Uros Bizjak
2025-03-04  9:55             ` Ingo Molnar
2025-03-04 15:00               ` Brian Gerst
2025-03-04 16:01                 ` Uros Bizjak
2025-03-04 16:42                   ` Brian Gerst
2025-03-04 16:48                     ` Uros Bizjak

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