Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'irq-urgent-2022-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single fix for the interrupt affinity spreading logic to take into
account that there can be an imbalance between present and possible
CPUs, which causes already assigned bits to be overwritten"
* tag 'irq-urgent-2022-04-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Consider that CPUs on nodes can be unbalanced
+3
-2
+3
-2
kernel/irq/affinity.c
+3
-2
kernel/irq/affinity.c
···
269
269
*/
270
270
if (numvecs <= nodes) {
271
271
for_each_node_mask(n, nodemsk) {
272
-
cpumask_or(&masks[curvec].mask, &masks[curvec].mask,
273
-
node_to_cpumask[n]);
272
+
/* Ensure that only CPUs which are in both masks are set */
273
+
cpumask_and(nmsk, cpu_mask, node_to_cpumask[n]);
274
+
cpumask_or(&masks[curvec].mask, &masks[curvec].mask, nmsk);
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275
if (++curvec == last_affv)
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curvec = firstvec;
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277
}