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Merge pull request #832 from Fothsid/fix-affinity-error

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fix: check for EPERM when setting IRQ affinity
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Jaroslav Škarvada 2026-03-05 16:41:06 +01:00 committed by GitHub
commit 6a41207b9d
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1 changed files with 5 additions and 4 deletions
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9
tuned/plugins/plugin_scheduler.py
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@ -1317,12 +1317,13 @@ class SchedulerPlugin(base.Plugin):
f.write(affinity_hex)
return 0
except (OSError, IOError) as e:
# EIO is returned by
# EPERM is returned by
# kernel/irq/proc.c:write_irq_affinity() if changing
# the affinity is not supported
# (at least on kernels 3.10 and 4.18)
if hasattr(e, "errno") and e.errno == errno.EIO \
and not restoring:
# Before kernel v6.12, write_irq_affinity() returned EIO
# instead of EPERM, hence the check for both error codes.
if hasattr(e, "errno") and (e.errno == errno.EIO \
or e.errno == errno.EPERM) and not restoring:
log.debug("Setting SMP affinity of IRQ %s is not supported"
% irq)
return -2