Date: Mon, 15 Mar 2004 20:08:53 +0100 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: John Baldwin <jhb@FreeBSD.ORG> Cc: cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern sys_process.c syscalls.master Message-ID: <20040315190853.GA33607@freebie.xs4all.nl> In-Reply-To: <200403151848.i2FImSFe047106@repoman.freebsd.org> References: <200403151848.i2FImSFe047106@repoman.freebsd.org>
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On Mon, Mar 15, 2004 at 10:48:28AM -0800, John Baldwin wrote: > jhb 2004/03/15 10:48:28 PST > > FreeBSD src repository > > Modified files: > sys/kern sys_process.c syscalls.master > Log: > Drop the proc lock around calls to the MD functions ptrace_single_step(), > ptrace_set_pc(), and cpu_ptrace() so that those functions are free to > acquire Giant, sleep, etc. We already do a PHOLD/PRELE around them so > that it is safe to sleep inside of these routines if necessary. This > allows ptrace() to be marked MP safe again as it no longer triggers lock > order reversals on Alpha. Someone with a SMP alpha box might also want to give this a spin I suppose. -- Wilko Bulte wilko@FreeBSD.org
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