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x86/softirq: Move softirq_pending to percpu hot section

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No functional change.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250303165246.2175811-7-brgerst@gmail.com
This commit is contained in:
Brian Gerst 2025-03-03 11:52:41 -05:00 committed by Ingo Molnar
parent 839be1619f
commit c8f1ac2bd7
3 changed files with 5 additions and 3 deletions
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1
arch/x86/include/asm/current.h
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@ -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

4
arch/x86/include/asm/hardirq.h
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@ -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)
/*

3
arch/x86/kernel/irq.c
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@ -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;
/*