linux-kernel - Re: [PATCH v2 4/7] platform/x86/intel/ifs: Implement Array BIST test

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Message-ID: <9c55a34b-c17e-2a62-9989-902ce940dde5@intel.com>
Date:   Wed, 22 Feb 2023 12:12:55 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     "Joseph, Jithu" <jithu.joseph@...el.com>, hdegoede@...hat.com,
        markgross@...nel.org
Cc:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        gregkh@...uxfoundation.org, rostedt@...dmis.org,
        ashok.raj@...el.com, tony.luck@...el.com,
        linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        patches@...ts.linux.dev, ravi.v.shankar@...el.com,
        thiago.macieira@...el.com, athenas.jimenez.gonzalez@...el.com,
        sohil.mehta@...el.com
Subject: Re: [PATCH v2 4/7] platform/x86/intel/ifs: Implement Array BIST test

On 2/15/23 13:13, Joseph, Jithu wrote:
>  And for the last argument, we need to dump the whole 64 bits within "command"
> into trace output . 

No, no you don't.

Just split it up in to human-readable logical pieces.  You don't need to
dump the whole 'command'.  If you want to trace the completion mask,
then extract the mask and print *that* with a proper field name.

I actually really think this tracing should go away, *ESPECIALLY* if you
insist on dumping out raw, non-human-readable MSR values.

I say NAK on the tracing.  You haven't convinced me that it's necessary
on top of what we have today (MSR tracing).