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Date: Wed, 12 Dec 2012 20:16:47 -0700
From: David Ahern <dsahern@gmail.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>
CC: Ingo Molnar <mingo@kernel.org>,
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        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [GIT PULL] perf changes for v3.8
References: <20121211090910.GA22985@gmail.com> <CA+55aFw=sifEKVJwDvmfV317+RNrf9Z88xZ5pu0SwggrQrubTw@mail.gmail.com> <50C94561.3070800@gmail.com> <CA+55aFwD3fFn7iYSnLw7iFk88xPYaVXMQVDyQans77PydgaeGg@mail.gmail.com>
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On 12/12/12 8:09 PM, Linus Torvalds wrote:
> On Wed, Dec 12, 2012 at 7:02 PM, David Ahern <dsahern@gmail.com> wrote:
>>
>> Can you add -v and see if it spits out more info?
>
> No more info.

I'm surprised you are not seeing this as well:

            } else if ((err == EOPNOTSUPP) && (attr->precise_ip)) {
                 ui__error("\'precise\' request may not be supported. "
                       "Try removing 'p' modifier\n");
                 rc = -err;
                 goto out;
             }

I made changes in this area relatively recently; I'll take a look.

David