Date: Mon, 15 Dec 2008 21:14:32 -0800 From: Sean Bruno <sbruno@miralink.com> To: Dieter <freebsd@sopwith.solgatos.com> Cc: freebsd-firewire@freebsd.org, bug-followup@FreeBSD.org Subject: Re: kern/118093: firewire bus reset hogs CPU, causing data to be lost Message-ID: <49473938.80906@miralink.com> In-Reply-To: <200812150330.DAA27074@sopwith.solgatos.com> References: <200812150330.DAA27074@sopwith.solgatos.com>
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Dieter wrote: > I found the source of this problem. When a firewire bus resets, > the firewire driver prints a few lines to the console, > using printf(9) and device_printf(9). I suspect that these are > running at splfw aka splimp, locking out other i/o. > > Commenting out the *printf() calls fixes the problem, but that > isn't a good solution. > > Would changing the *printf() calls to log(9) calls be safe? > ("safe" meaning other i/o doesn't get locked out) > > Ah, for the good old days when 19200 baud seemed fast... > _______________________________________________ > Which one are you looking at Dieter? Sean
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