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Date: Tue, 26 Jan 2010 16:20:22 -0700 From: Tom Tromey <tromey@...hat.com> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Kyle Moffett <kyle@...fetthome.net>, "Frank Ch. Eigler" <fche@...hat.com>, Oleg Nesterov <oleg@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Stephen Rothwell <sfr@...b.auug.org.au>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Peter Zijlstra <peterz@...radead.org>, Fr??d??ric Weisbecker <fweisbec@...il.com>, LKML <linux-kernel@...r.kernel.org>, Steven Rostedt <rostedt@...dmis.org>, Arnaldo Carvalho de Melo <acme@...hat.com>, linux-next@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>, utrace-devel@...hat.com, Thomas Gleixner <tglx@...utronix.de> Subject: Re: linux-next: add utrace tree >>>>> "Linus" == Linus Torvalds <torvalds@...ux-foundation.org> writes: Tom> * Support "displaced stepping" in the kernel; I think this would improve Tom> performance when debugging in non-stop mode. Linus> Don't we already do that at least on x86? I don't know. If it does, and gdb does not yet use that, then that would be worth changing. Linus> Or maybe I'm not understanding what displaced stepping means to you. In non-stop mode (where you can stop one thread but leave the others running), gdb wants to have the breakpoints always inserted. So, something must emulate the displaced instruction. Tom -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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