The following commit has been merged into the x86/core branch of tip:
Commit-ID: c8f1ac2bd7771a3bc536f897c142ca219cac13e1
Gitweb: https://git.kernel.org/tip/c8f1ac2bd7771a3bc536f897c142ca219cac13e1
Author: Brian Gerst <brgerst@xxxxxxxxx>
AuthorDate: Mon, 03 Mar 2025 11:52:41 -05:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 04 Mar 2025 20:30:33 +01:00
x86/softirq: Move softirq_pending to percpu hot section
No functional change.
Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Uros Bizjak <ubizjak@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250303165246.2175811-7-brgerst@xxxxxxxxx
---
arch/x86/include/asm/current.h | 1 -
arch/x86/include/asm/hardirq.h | 4 ++--
arch/x86/kernel/irq.c | 3 +++
3 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h
index 8ba2c0f..f153c77 100644
--- a/arch/x86/include/asm/current.h
+++ b/arch/x86/include/asm/current.h
@@ -16,7 +16,6 @@ struct pcpu_hot {
struct task_struct *current_task;
unsigned long top_of_stack;
void *hardirq_stack_ptr;
- u16 softirq_pending;
#ifdef CONFIG_X86_64
bool hardirq_stack_inuse;
#else
diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h
index 6ffa8b7..f00c09f 100644
--- a/arch/x86/include/asm/hardirq.h
+++ b/arch/x86/include/asm/hardirq.h
@@ -3,7 +3,6 @@
#define _ASM_X86_HARDIRQ_H
#include <linux/threads.h>
-#include <asm/current.h>
typedef struct {
#if IS_ENABLED(CONFIG_KVM_INTEL)
@@ -66,7 +65,8 @@ extern u64 arch_irq_stat_cpu(unsigned int cpu);
extern u64 arch_irq_stat(void);
#define arch_irq_stat arch_irq_stat
-#define local_softirq_pending_ref pcpu_hot.softirq_pending
+DECLARE_PER_CPU_CACHE_HOT(u16, __softirq_pending);
+#define local_softirq_pending_ref __softirq_pending
#if IS_ENABLED(CONFIG_KVM_INTEL)
/*
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index feca4f2..83a5252 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -33,6 +33,9 @@
DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
EXPORT_PER_CPU_SYMBOL(irq_stat);
+DEFINE_PER_CPU_CACHE_HOT(u16, __softirq_pending);
+EXPORT_PER_CPU_SYMBOL(__softirq_pending);
+
atomic_t irq_err_count;
/*
|