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Revert "genirq: Provide new interfaces for affinity hints"

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This reverts commit 7b2a67322a which is
commit 65c7cdedeb3026fabcc967a7aae2f755ad4d0783 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: Ic50159039a689542f5d6d0e773464263e9d33be4
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Greg Kroah-Hartman 2025-10-06 11:30:59 +00:00
commit 4055235829
2 changed files with 5 additions and 56 deletions
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8
kernel/irq/manage.c
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@ -448,8 +448,7 @@ int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask)
}
EXPORT_SYMBOL_GPL(irq_force_affinity);
int __irq_apply_affinity_hint(unsigned int irq, const struct cpumask *m,
bool setaffinity)
int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
{
unsigned long flags;
struct irq_desc *desc = irq_get_desc_lock(irq, &flags, IRQ_GET_DESC_CHECK_GLOBAL);
@ -458,11 +457,12 @@ int __irq_apply_affinity_hint(unsigned int irq, const struct cpumask *m,
return -EINVAL;
desc->affinity_hint = m;
irq_put_desc_unlock(desc, flags);
if (m && setaffinity)
/* set the initial affinity to prevent every interrupt being on CPU0 */
if (m)
__irq_set_affinity(irq, m, false);
return 0;
}
EXPORT_SYMBOL_GPL(__irq_apply_affinity_hint);
EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
static void irq_affinity_notify(struct work_struct *work)
{