linux-kernel - Re: [PATCH 37/37] perf intel-pt: Improve sample timestamp

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Message-ID: <20170519143418.GC15563@tassilo.jf.intel.com>
Date:   Fri, 19 May 2017 07:34:18 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 37/37] perf intel-pt: Improve sample timestamp

On Fri, May 19, 2017 at 11:54:36AM +0300, Adrian Hunter wrote:
> The decoder uses its current timestamp in samples. Usually that is a
> timestamp that has already passed, but in some cases it is a timestamp for
> a branch that the decoder is walking towards, and consequently hasn't
> reached. Improve that situation by using the pkt_state to determine when
> to use the current or previous timestamp.

Thanks. I ran into this problem a lot.

Would be good to mark the clear bug fixes like this with cc stable.

-Andi