linux-kernel - [patch V6 05/19] x86/cpu: Move __max_die_per

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Date: Tue, 13 Feb 2024 22:04:05 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org,
 Tom Lendacky <thomas.lendacky@....com>,
 Andrew Cooper <andrew.cooper3@...rix.com>,
 Arjan van de Ven <arjan@...ux.intel.com>,
 Huang Rui <ray.huang@....com>,
 Juergen Gross <jgross@...e.com>,
 Dimitri Sivanich <dimitri.sivanich@....com>,
 Sohil Mehta <sohil.mehta@...el.com>,
 K Prateek Nayak <kprateek.nayak@....com>,
 Kan Liang <kan.liang@...ux.intel.com>,
 Zhang Rui <rui.zhang@...el.com>,
 "Paul E. McKenney" <paulmck@...nel.org>,
 Feng Tang <feng.tang@...el.com>,
 Andy Shevchenko <andy@...radead.org>,
 Michael Kelley <mhklinux@...look.com>,
 "Peter Zijlstra (Intel)" <peterz@...radead.org>,
 Wang Wendy <wendy.wang@...el.com>
Subject: [patch V6 05/19] x86/cpu: Move __max_die_per_package to common.c

From: Thomas Gleixner <tglx@...utronix.de>

In preparation of a complete replacement for the topology leaf 0xb/0x1f
evaluation, move __max_die_per_package into the common code.

Will be removed once everything is converted over.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Tested-by: Juergen Gross <jgross@...e.com>
Tested-by: Sohil Mehta <sohil.mehta@...el.com>
Tested-by: Michael Kelley <mhklinux@...look.com>
Tested-by: Zhang Rui <rui.zhang@...el.com>
Tested-by: Wang Wendy <wendy.wang@...el.com>

---
 arch/x86/kernel/cpu/common.c   |    3 +++
 arch/x86/kernel/cpu/topology.c |    3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)
---

--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -75,6 +75,9 @@ u32 elf_hwcap2 __read_mostly;
 int smp_num_siblings = 1;
 EXPORT_SYMBOL(smp_num_siblings);

+unsigned int __max_die_per_package __read_mostly = 1;
+EXPORT_SYMBOL(__max_die_per_package);
+
 static struct ppin_info {
 	int	feature;
 	int	msr_ppin_ctl;
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -25,9 +25,6 @@
 #define BITS_SHIFT_NEXT_LEVEL(eax)	((eax) & 0x1f)
 #define LEVEL_MAX_SIBLINGS(ebx)		((ebx) & 0xffff)

-unsigned int __max_die_per_package __read_mostly = 1;
-EXPORT_SYMBOL(__max_die_per_package);
-
 #ifdef CONFIG_SMP
 /*
  * Check if given CPUID extended topology "leaf" is implemented