Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A small fix for the affinity spreading code.
It failed to handle situations where a single vector was requested
either due to only one CPU being available or vector exhaustion
causing only a single interrupt to be granted.
The fix is to simply remove the requirement in the affinity spreading
code for more than one interrupt being available"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Create affinity mask for single vector
+2
-4
+2
-4
kernel/irq/affinity.c
+2
-4
kernel/irq/affinity.c
···
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* Determine the number of vectors which need interrupt affinities
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* assigned. If the pre/post request exhausts the available vectors
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* then nothing to do here except for invoking the calc_sets()
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* callback so the device driver can adjust to the situation. If there
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* is only a single vector, then managing the queue is pointless as
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* well.
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* callback so the device driver can adjust to the situation.
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*/
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-
if (nvecs > 1 && nvecs > affd->pre_vectors + affd->post_vectors)
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+
if (nvecs > affd->pre_vectors + affd->post_vectors)
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affvecs = nvecs - affd->pre_vectors - affd->post_vectors;
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else
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affvecs = 0;