On Fri, Jun 9, 2023 at 2:06 AM Richard Purdie
<[email protected]> wrote:
>
> On Thu, 2023-06-08 at 19:39 +0000, [email protected] wrote:
> > From: Bruce Ashfield <[email protected]>
> >
> > We are seeing intermittent boot hangs with x86. Once of the last
> > messages in failing logs is secondary cpu startup.
> >
> > Dropping us down to smp for testing to see if the hangs start to
> > go away with smp removed.
> >
> > Signed-off-by: Bruce Ashfield <[email protected]>
> > ---
> >  meta/conf/machine/include/x86/qemuboot-x86.inc | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/meta/conf/machine/include/x86/qemuboot-x86.inc 
> > b/meta/conf/machine/include/x86/qemuboot-x86.inc
> > index 6ae03633ae..54a12119a7 100644
> > --- a/meta/conf/machine/include/x86/qemuboot-x86.inc
> > +++ b/meta/conf/machine/include/x86/qemuboot-x86.inc
> > @@ -1,6 +1,6 @@
> >  # For runqemu
> >  IMAGE_CLASSES += "qemuboot"
> > -QB_SMP ?= "-smp 4"
> > +QB_SMP ?= ""
> >  QB_CPU:x86 ?= "-cpu IvyBridge -machine q35,i8042=off"
> >  QB_CPU_KVM:x86 ?= "-cpu IvyBridge -machine q35,i8042=off"
> >
> >
>
> FWIW, this patch didn't change much. With it applied we still see:


ok. so at least we can rule out it being specific to secondary cpu startup.

Bruce


>
>
> https://autobuilder.yoctoproject.org/typhoon/#/builders/81/builds/5168/steps/12/logs/stdio
>
> [    0.634735] Freeing SMP alternatives memory: 52K
> [   12.275510] smpboot: CPU0: Intel Xeon E3-12xx v2 (Ivy Bridge) (family: 
> 0x6, model: 0x3a, stepping: 0x9)
> [274491.955544] cblist_init_generic: Setting adjustable number of callback 
> queues.
> [274492.008510] cblist_init_generic: Setting shift to 0 and lim to 1.
> [279820.791509] cblist_init_generic: Setting shift to 0 and lim to 1.
> [282104.735510] cblist_init_generic: Setting shift to 0 and lim to 1.
> [386831.154510] Performance Events: unsupported p6 CPU model 58 no PMU 
> driver, software events only.
> [386850.632510] rcu: Hierarchical SRCU implementation.
> [386850.668510] rcu:    Max phase no-delay instances is 400.
> [386852.898509] smp: Bringing up secondary CPUs ...
> [386852.946510] smp: Brought up 1 node, 1 CPU
> [386852.992510] smpboot: Max logical packages: 1
> [386853.018509] smpboot: Total of 1 processors activated (5199.99 BogoMIPS)
> [386855.257509] devtmpfs: initialized
> [386857.982509] clocksource: jiffies: mask: 0xffffffff max_cycles: 
> 0xffffffff, max_idle_ns: 1911260446275000 ns
> [386858.041510] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
> [386858.691509] pinctrl core: initialized pinctrl subsystem
> [386862.836510] NET: Registered PF_NETLINK/PF_ROUTE protocol family
> [386864.720510] thermal_sys: Registered thermal governor 'step_wise'
> [386864.725509] thermal_sys: Registered thermal governor 'user_space'
> [386864.864510] cpuidle: using governor menu
> [386865.662509] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 
> 0xb0000000-0xbfffffff] (base 0xb0000000)
> [386865.693510] PCI: MMCONFIG at [mem 0xb0000000-0xbfffffff] reserved in E820
> [386865.900509] PCI: Using configuration type 1 for base access
> [386878.550509] kprobes: kprobe jump-optimization is enabled. All kprobes are 
> optimized if possible.
>
> Cheers,
>
> Richard
>


-- 
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thee at its end
- "Use the force Harry" - Gandalf, Star Trek II
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