FS#54983 - [linux-zen] Fail to boot using elevator=kyber or elevator=bfq in 4.12.3, but not in 4.12.0-2
Attached to Project:
Arch Linux
Opened by Andrew Fader (afader) - Sunday, 30 July 2017, 21:31 GMT
Last edited by Doug Newgard (Scimmia) - Sunday, 30 July 2017, 22:15 GMT
Opened by Andrew Fader (afader) - Sunday, 30 July 2017, 21:31 GMT
Last edited by Doug Newgard (Scimmia) - Sunday, 30 July 2017, 22:15 GMT
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Details
Hi, I'm currently running 4.12.0-2-zen #1 ZEN SMP PREEMPT
Sat Jul 8 16:22:59 UTC 2017 x86_64 GNU/Linux which I
installed from the "staging" repo and using the kyber
scheduler, which I can set by echoing that string into
/sys/block/sda/queue/scheduler. I haven't tested 4.12.4 in
testing, but when I boot in 4.12.3 it crashes if I have set
the scheduler to kyber by passing elevator=kyber as a kernel
parameter. I will capture the stack trace if you can tell me
how or where that log is.
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This task depends upon
Closed by Doug Newgard (Scimmia)
Sunday, 30 July 2017, 22:15 GMT
Reason for closing: Duplicate
Additional comments about closing: FS#54964
Sunday, 30 July 2017, 22:15 GMT
Reason for closing: Duplicate
Additional comments about closing:
FS#54964Edit:
I should note at least in the mainline/stable kernel elevator is not deprecated but it will only set the none multique scheduler.
So at least in mainline/stable elevator could set cfq/noop/deadline if you are using multiqueue you will need to use other means
to set mq-deadline/kyber/bfq/none see https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/block?h=v4.12&id=b86dd815ff74ab9eda474d1c28428ac0db2c3032