Date: Wed, 20 Jun 2001 09:53:41 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Matthew Jacob <mjacob@feral.com> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org, Ian Dowse <iedowse@FreeBSD.org> Subject: Re: cvs commit: src/sys/isa sio.c Message-ID: <XFMail.010620095341.jhb@FreeBSD.org> In-Reply-To: <Pine.BSF.4.21.0106200949000.69192-100000@beppo.feral.com>
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On 20-Jun-01 Matthew Jacob wrote: > > Was this tested on alpha? I will shortly. It might make my life a lot easier as I might finally get a chance to break into my livelocked SMP rawhide now. Doing stack traces and what not via memory dumps from SRM is much more painful compared to ddb. :) > On Wed, 20 Jun 2001, Ian Dowse wrote: > >> iedowse 2001/06/20 09:47:24 PDT >> >> Modified files: >> sys/isa sio.c >> Log: >> The serial console break-to-debugger support only functioned while >> the console device was open. At other times, the interrupts that >> are used to detect the break signal or ~^B sequence were disabled, >> so these events would not be noticed until the next open (e.g. the >> next kernel printf). This was mainly a problem while there was no >> getty running on the console, such as during bootup or shutdown. >> >> For serial consoles with break-to-debugger support, we now enable >> the generation of interrupts at attach time, and we leave them >> enabled while the device is closed. >> >> Reviewed by: bde (I've since made chages as per his suggestions) >> >> Revision Changes Path >> 1.336 +22 -2 src/sys/isa/sio.c >> > -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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