linux-kernel - Re: [PATCH v6 1/3] perf/core: use rb trees for pinned/flexible groups

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Message-ID: <20170807181252.bdn47cknimqzunnl@hirez.programming.kicks-ass.net>
Date:   Mon, 7 Aug 2017 20:12:52 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Kan Liang <kan.liang@...el.com>,
        Dmitri Prokhorov <Dmitry.Prohorov@...el.com>,
        Valery Cherepennikov <valery.cherepennikov@...el.com>,
        Mark Rutland <mark.rutland@....com>,
        Stephane Eranian <eranian@...gle.com>,
        David Carrillo-Cisneros <davidcc@...gle.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 1/3] perf/core: use rb trees for pinned/flexible groups

On Mon, Aug 07, 2017 at 10:39:55AM -0700, Andi Kleen wrote:
> I'm not sure Alexey's patch kit will be able to solve every possible
> problem with the event scheduler. Trying to fix everything at 
> the same time is usually difficult. 

I didn't say he should solve this. Just said that putting everything in
a tree enables solving it.