Since commit 425a5072dcd1 ("genirq: Free irq_desc with rcu"),
show_interrupts() can be switched to rcu locking, which removes
possible contention on sparse_irq_lock.
The per_cpu count scan and print can be done without holding
desc spinlock.
And there is no need to call kstat_irqs_cpu() and
Since commit 425a5072dcd1 ("genirq: Free irq_desc with rcu"),
show_interrupts() can be switched to rcu locking, which removes
possible contention on sparse_irq_lock.
The per_cpu count scan and print can be done without holding
desc spinlock.
And there is no need to call kstat_irqs_cpu() and
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