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Message-ID: <20200322231820.GB267978@tassilo.jf.intel.com>
Date:   Sun, 22 Mar 2020 16:18:20 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Ian Rogers <irogers@...gle.com>, Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        linux-kernel@...r.kernel.org, Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v2] perf test x86: address multiplexing in rdpmc test

> Here's something a little better. Much of it copied from linux/math64.h
> and asm/div64.h.

Not sure what the point is of micro optimizing a unit test?

This is never run in production.

-Andi

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