On Fri, Sep 25, 2020 at 02:51:47PM +0300, Tony Lindgren wrote: > * Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> [200924 13:31]: > > Hi Tony, > > > > On Thu, Sep 24, 2020 at 09:08:26AM +0300, Tony Lindgren wrote: > > > * Tomi Valkeinen <tomi.valkeinen@xxxxxx> [200924 06:05]: > > > > On 24/09/2020 08:53, Tony Lindgren wrote: > > > > >>>>> On Fri, Sep 18, 2020 at 06:25:02PM +0300, Tomi Valkeinen wrote: > > > > >>>>>> v5.9-rc5 > > > > >>>>>> [ 0.706165] cpuidle: using governor menu > > > > >>>>>> [ 6.761812] No ATAGs? > > > > >>>>>> > > > > >>>>>> [ 19.522536] Run /sbin/init as init process > > > > > > > > > > Hmm v5.9-rc1 here with NFSroot shows this for me: > > > > > > > > > > [ 11.704511] Run /sbin/init as init process > > > > > > > > > > And v5.9-rc6 shows: > > > > > > > > > > [ 13.120913] Run /sbin/init as init process > > > > > > > > > > With at least two seconds spent on waiting for Ethernet PHY to > > > > > negotiate the speed. This is with omap2plus_defconfig. > > > > > > > > I'm also using nfsroot, so I didn't put too much weight on the "Run /sbin/init as init process" > > > > line, as it could also be caused the network or the nfs server. But the "No ATAGs" lines already > > > > show an increase from 0.8s to 6.7s from v5.7 to v5.9-rc5. > > > > Yes, that's the main issue. > > > > > That's strange, I'm seeing this with v5.9-rc6: > > > > > > [ 2.357585] No ATAGs? > > > > What's your test platform ? > > This is from beagle x15. I wonder how Tomi is seeing over six seconds > at that point though while I'm seeing two something. And I see 10s on the same platform. > > Still, 1.5s spent there is quite a lot. > > Probably that's when module_init runs and we probe almost everything. > Might be worth profiling to see if we can optimize out some full dtb > tree searches for example. As far as I can tell, module_init() runs later than that. If we probed everything there would be lots of messages printed during that period of time. -- Regards, Laurent Pinchart
