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Date:      Mon, 26 Nov 2012 09:55:40 -0500
From:      Ed Maste <emaste@freebsd.org>
To:        Sushanth Rai <sushanth_rai@yahoo.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Running kgdb in batch mode.
Message-ID:  <CAPyFy2B3SJfBDFR81Z=i48LAg5cR_Ljroo8inT=1LoaW7CK7=w@mail.gmail.com>
In-Reply-To: <1353910892.62730.YahooMailClassic@web181702.mail.ne1.yahoo.com>
References:  <1353910892.62730.YahooMailClassic@web181702.mail.ne1.yahoo.com>

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On 26 November 2012 01:21, Sushanth Rai <sushanth_rai@yahoo.com> wrote:
> Basically I would like to get kernel backtrace of a bunch of threads from the live kernel under some conditions. When the condition is seen I would like to run kgdb, collect kernel backtrace of specific threads and exit. Is there a way run kgdb in batch mode ? Or any other way to get the stack trace.

Have a look at /usr/sbin/crashinfo for an example of how to do so -
basically just run kgdb $KERNEL $VMCORE < commands_file.

-Ed


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