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Date: Thu, 09 Feb 2012 08:47:25 -0700 From: David Ahern <dsahern@...il.com> To: Joerg Roedel <joerg.roedel@....com> CC: Ingo Molnar <mingo@...e.hu>, Arnaldo Carvalho de Melo <acme@...stprotocols.net>, LKML <linux-kernel@...r.kernel.org>, Jason Wang <jasowang@...hat.com> Subject: Re: perf: record segfaults for cycles event when collecting data on a VM On 02/09/2012 08:28 AM, Joerg Roedel wrote: > On Thu, Feb 09, 2012 at 03:32:53PM +0100, Joerg Roedel wrote: >> Yeah, right. Guest samples may also show up intentionally when the event >> modifiers are used. So crashing on machine==NULL needs to be fixed. > > Hmm, on the other hand, there is no way to specify guest symbol > information to the regular perf subcommands except for perf-kvm. Without > that information perf can not resolve any GUEST_KERNEL samples, so in > the end there is no point in setting perf_guest to true except for > perf-kvm, no? Exactly. That was my point in my last reply. -- 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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