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Date:      Tue, 07 Sep 2010 09:02:14 +0300
From:      Andriy Gapon <avg@freebsd.org>
To:        Olivier Smedts <olivier@gid0.org>
Cc:        freebsd-current@freebsd.org, freebsd-stable@freebsd.org, Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject:   Re: patch for topology detection of Intel CPUs
Message-ID:  <4C85D566.1040006@freebsd.org>
In-Reply-To: <AANLkTinFxO37kKFaOrSLO4AG88HGzBayiqOjX8C0gPRb@mail.gmail.com>
References:  <AANLkTinYUz0V%2B2nSWBMYLf2fL8HnUQ-fvXT0q-5WY4bb@mail.gmail.com>	<4C782D3B.6020407@icyb.net.ua>	<201008271743.29393.jkim@FreeBSD.org>	<4C7835E6.6070309@icyb.net.ua>	<4C7A2782.5040009@freebsd.org>	<4C84DBE6.5010809@freebsd.org>	<20100906122325.GA78727@icarus.home.lan>	<4C84E4E1.8010709@freebsd.org>	<20100906131203.GA80251@icarus.home.lan>	<4C84EC62.6020205@freebsd.org>	<20100906162230.GA1444@icarus.home.lan>	<4C8517D1.3050603@freebsd.org> <AANLkTinFxO37kKFaOrSLO4AG88HGzBayiqOjX8C0gPRb@mail.gmail.com>

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on 06/09/2010 20:12 Olivier Smedts said the following:
> Here is mine : no difference before and after the patch :

Thanks!

[snip]

> The only thing I noticed is this, after the patch :
> ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
> ada1: <SAMSUNG HD161HJ JF100-19> ATA-7 SATA 2.x device
> ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
> ada1: Command Queueing enabled
> ada1: 152627MB (312581808 512 byte sectors: 16H 63S/T 16383C)
> SMP: AP CPU #1 Launched!cd0 at ahcich2 bus 0 scbus2 target 0 lun 0
> 
> cd0: <LITE-ON DVDRW LH-20A1S 9L08> Removable CD-ROM SCSI-0 device
> cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO 8192bytes)
> cd0: Attempt to query device size failed: NOT READY, Medium not present
> SMP: AP CPU #3 Launched!
> SMP: AP CPU #2 Launched!
> Trying to mount root from zfs:tank/freebsd
> 
> 
> Before the patch, all the "SMP: AP CPU #X Launched!" were correctly
> displayed, with carriage returns. Yes, I use "options
> PRINTF_BUFR_SIZE=128". And I don't know if that's related to the
> patch.

No, it's not related, it's a probabilistic thing.
Those "Launched!" messages are printed from threads running on freshly started
APs and thus are executed truly parallel to BSP.

BTW, is the above snippet from /var/log/messages or from actual console (e.g.
ttyv0)?  If it's from message, then could you please check how it looks on the
console?


-- 
Andriy Gapon



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