superrob1500
/
mirror-linux
mirror of https://github.com/torvalds/linux
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

genirq/manage: Rework irq_percpu_is_enabled() 

Use the new guards to get and lock the interrupt descriptor and tidy up the
code.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/20250429065422.376836282@linutronix.de
pull/1250/head
Thomas Gleixner 2025-04-29 08:55:46 +02:00
parent 508bd94c3a
commit b171f712d6
1 changed files with 3 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
kernel/irq/manage.c
View File

@ -2322,19 +2322,9 @@ void enable_percpu_nmi(unsigned int irq, unsigned int type)
*/
bool irq_percpu_is_enabled(unsigned int irq)
{
unsigned int cpu = smp_processor_id();
struct irq_desc *desc;
unsigned long flags;
bool is_enabled;
desc = irq_get_desc_lock(irq, &flags, IRQ_GET_DESC_CHECK_PERCPU);
if (!desc)
scoped_irqdesc_get_and_lock(irq, IRQ_GET_DESC_CHECK_PERCPU)
return cpumask_test_cpu(smp_processor_id(), scoped_irqdesc->percpu_enabled);
return false;
is_enabled = cpumask_test_cpu(cpu, desc->percpu_enabled);
irq_put_desc_unlock(desc, flags);
return is_enabled;
}
EXPORT_SYMBOL_GPL(irq_percpu_is_enabled);