linux-kernel - Re: [RFC][PATCH] perf: Rewrite core context handling

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Message-ID: <20181015085304.GE9885@hirez.programming.kicks-ass.net>
Date:   Mon, 15 Oct 2018 10:53:04 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc:     mingo@...nel.org, linux-kernel@...r.kernel.org, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        songliubraving@...com, eranian@...gle.com, tglx@...utronix.de,
        mark.rutland@....com, megha.dey@...el.com, frederic@...nel.org
Subject: Re: [RFC][PATCH] perf: Rewrite core context handling

On Mon, Oct 15, 2018 at 10:34:48AM +0200, Peter Zijlstra wrote:
> On Mon, Oct 15, 2018 at 10:26:06AM +0300, Alexey Budankov wrote:

> > Rewrite is impressive however it doesn't result in code base reduction as it is.
> 
> Yeah.. that seems to be nature of these things ..

Note that some things did get simpler; the whole move_group case in the
syscall simplified, as well as the whole online state tracking (which
isn't completed).

But yes, overall complexity did increase by the additional data
structures and their relations.