* is there any dynamic equivalent to the "isolcpus=managed_irq" boot arg?
@ 2024-10-24 19:04 Chris Friesen
0 siblings, 0 replies; only message in thread
From: Chris Friesen @ 2024-10-24 19:04 UTC (permalink / raw)
To: LKML
Hi all,
In the kernel boot args we can specify something like
"isolcpus=managed_irq,nohz,domain,<cpu-list>" to tell the kernel to
isolate a given set of CPUs and *also* prevent them from being targeted
by managed interrupts.
The boot-time isolcpus mechanism is deprecated, so is there a runtime
equivalent to tell the kernel to avoid certain CPUs for managed
interrupts? I just stumbled over https://lkml.org/lkml/2024/9/16/563
which makes me think the answer might be that no such mechanism exists
currently.
I'm not subscribed to the list so please CC me on replies.
Thanks,
Chris Friesen
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