The following commit has been merged into the x86/core branch of tip: Commit-ID: 7fcecafebed90d03f35bec6e147fc0b5f6e1bc71 Gitweb: https://git.kernel.org/tip/7fcecafebed90d03f35bec6e147fc0b5f6e1bc71 Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Thu, 15 Sep 2022 13:11:06 +02:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Mon, 17 Oct 2022 16:41:05 +02:00 x86/softirq: Move softirq pending next to current task Another hot variable which is strict per CPU and benefits from being in the same cache line. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220915111145.702133710@xxxxxxxxxxxxx --- arch/x86/include/asm/current.h | 1 + arch/x86/include/asm/hardirq.h | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/current.h b/arch/x86/include/asm/current.h index ac3090d..b89aba0 100644 --- a/arch/x86/include/asm/current.h +++ b/arch/x86/include/asm/current.h @@ -19,6 +19,7 @@ struct pcpu_hot { int cpu_number; 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 275e7fd..66837b8 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -3,9 +3,9 @@ #define _ASM_X86_HARDIRQ_H #include <linux/threads.h> +#include <asm/current.h> typedef struct { - u16 __softirq_pending; #if IS_ENABLED(CONFIG_KVM_INTEL) u8 kvm_cpu_l1tf_flush_l1d; #endif @@ -60,6 +60,7 @@ 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 #if IS_ENABLED(CONFIG_KVM_INTEL) static inline void kvm_set_cpu_l1tf_flush_l1d(void)
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