Ksawlii/kernel_samsung_a53x
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kernel: Don't allow userspace to alter IRQ affinities

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The msm_irqbalance service in userspace constantly migrates IRQs between
CPUs according to its whims, which is not desired. All of the IRQs have
a sane affinity (CPU0 if unimportant, CPU4-7 otherwise), so prevent
userspace from tampering with that.

Signed-off-by: Sultan Alsawaf <sultanxda@gmail.com>
(cherry picked from commit 6cedf3c9b1f8c962d19ce4151ca5caaff69e3c6a)
(cherry picked from commit 8fc0013ba4094fd8fe95fb0d23af0936347060f4)
This commit is contained in:
Sultan Alsawaf 2018-05-16 17:30:24 -07:00 committed by Ksawlii
parent 3de61e729d
commit 18de03d1a6
1 changed files with 1 additions and 1 deletions
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kernel/irq/proc.c
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@ -100,7 +100,7 @@ static int irq_affinity_hint_proc_show(struct seq_file *m, void *v)
return 0;
}
int no_irq_affinity;
int no_irq_affinity = 1;
static int irq_affinity_proc_show(struct seq_file *m, void *v)
{
return show_irq_affinity(AFFINITY, m);