From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
kernel test robot <lkp@intel.com>
Subject: [PATCH] x86/topology: Make __max_die_per_package available unconditionally
Date: Thu, 14 Jan 2021 12:18:14 +0100 [thread overview]
Message-ID: <20210114111814.5346-1-bp@alien8.de> (raw)
From: Borislav Petkov <bp@suse.de>
Move it outside of CONFIG_SMP in order to avoid ifdeffery at the usage
sites.
Fixes: 76e2fc63ca40 ("x86/cpu/amd: Set __max_die_per_package on AMD")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/topology.h | 4 ++--
arch/x86/kernel/cpu/topology.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index 488a8e848754..9239399e5491 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -110,6 +110,8 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
#define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id)
#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
+extern unsigned int __max_die_per_package;
+
#ifdef CONFIG_SMP
#define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu))
#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
@@ -118,8 +120,6 @@ extern const struct cpumask *cpu_coregroup_mask(int cpu);
extern unsigned int __max_logical_packages;
#define topology_max_packages() (__max_logical_packages)
-extern unsigned int __max_die_per_package;
-
static inline int topology_max_die_per_package(void)
{
return __max_die_per_package;
diff --git a/arch/x86/kernel/cpu/topology.c b/arch/x86/kernel/cpu/topology.c
index 1068002c8532..8678864ce712 100644
--- a/arch/x86/kernel/cpu/topology.c
+++ b/arch/x86/kernel/cpu/topology.c
@@ -25,10 +25,10 @@
#define BITS_SHIFT_NEXT_LEVEL(eax) ((eax) & 0x1f)
#define LEVEL_MAX_SIBLINGS(ebx) ((ebx) & 0xffff)
-#ifdef CONFIG_SMP
unsigned int __max_die_per_package __read_mostly = 1;
EXPORT_SYMBOL(__max_die_per_package);
+#ifdef CONFIG_SMP
/*
* Check if given CPUID extended toplogy "leaf" is implemented
*/
--
2.29.2
next reply other threads:[~2021-01-14 11:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-14 11:18 Borislav Petkov [this message]
2021-01-14 11:23 ` [tip: x86/urgent] x86/topology: Make __max_die_per_package available unconditionally tip-bot2 for Borislav Petkov
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