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| author | Thomas Gleixner <tglx@linutronix.de> | 2022-09-15 13:11:05 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-10-17 16:41:05 +0200 |
| commit | d7b6d709a76a4f4ef3108ac41e1b39eb80f5c084 (patch) | |
| tree | 2687f3d932a493f83edd908dc5e20127c3a43237 /arch/x86/kernel/irq_64.c | |
| parent | c063a217bc0726c2560138229de5673dbb253a02 (diff) | |
| download | lwn-d7b6d709a76a4f4ef3108ac41e1b39eb80f5c084.tar.gz lwn-d7b6d709a76a4f4ef3108ac41e1b39eb80f5c084.zip | |
x86/percpu: Move irq_stack variables next to current_task
Further extend struct pcpu_hot with the hard and soft irq stack
pointers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111145.599170752@infradead.org
Diffstat (limited to 'arch/x86/kernel/irq_64.c')
| -rw-r--r-- | arch/x86/kernel/irq_64.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c index 1c0fb96b9e39..fe0c859873d1 100644 --- a/arch/x86/kernel/irq_64.c +++ b/arch/x86/kernel/irq_64.c @@ -50,7 +50,7 @@ static int map_irq_stack(unsigned int cpu) return -ENOMEM; /* Store actual TOS to avoid adjustment in the hotpath */ - per_cpu(hardirq_stack_ptr, cpu) = va + IRQ_STACK_SIZE - 8; + per_cpu(pcpu_hot.hardirq_stack_ptr, cpu) = va + IRQ_STACK_SIZE - 8; return 0; } #else @@ -63,14 +63,14 @@ static int map_irq_stack(unsigned int cpu) void *va = per_cpu_ptr(&irq_stack_backing_store, cpu); /* Store actual TOS to avoid adjustment in the hotpath */ - per_cpu(hardirq_stack_ptr, cpu) = va + IRQ_STACK_SIZE - 8; + per_cpu(pcpu_hot.hardirq_stack_ptr, cpu) = va + IRQ_STACK_SIZE - 8; return 0; } #endif int irq_init_percpu_irqstack(unsigned int cpu) { - if (per_cpu(hardirq_stack_ptr, cpu)) + if (per_cpu(pcpu_hot.hardirq_stack_ptr, cpu)) return 0; return map_irq_stack(cpu); } |