Date: Thu, 18 Oct 2001 23:26:03 -0600 From: Brett Glass <brett@lariat.org> To: John Baldwin <jhb@FreeBSD.ORG> Cc: chat@FreeBSD.ORG, Dag-Erling Smorgrav <des@ofug.org> Subject: Re: Breaking news: FreeBSD is "considering implementing a preemp Message-ID: <4.3.2.7.2.20011018232356.04601a40@localhost> In-Reply-To: <XFMail.011016221347.jhb@FreeBSD.org> References: <4.3.2.7.2.20011017120858.046a58a0@localhost>
next in thread | previous in thread | raw e-mail | index | archive | help
At 11:13 PM 10/16/2001, John Baldwin wrote: >The only remaining trick is >to not preempt during critical sections which are already marked by our >critical_enter/exit API. That's the hardest part: recognizing, in existing code, what's a critical section. It may be non-obvious what will leave the kernel data structures inconsistent in some subtle way -- especially if it involves data values that should not be present at the same time rather than dangling pointers. --Brett To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4.3.2.7.2.20011018232356.04601a40>