linux-kernel - Re: [PATCH v1 0/2] perf stat: Support --all-kernel and --all-user

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Message-ID: <20191001021755.GF8560@tassilo.jf.intel.com>
Date:   Mon, 30 Sep 2019 19:17:55 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Jin Yao <yao.jin@...ux.intel.com>,
        jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v1 0/2] perf stat: Support --all-kernel and --all-user

> > I think it's useful. Makes it easy to do kernel/user break downs.
> > perf record should support the same.
> 
> Don't we have this already with:
> 
> [root@...co ~]# perf stat -e cycles:u,instructions:u,cycles:k,instructions:k -a -- sleep 1

This only works for simple cases. Try it for --topdown or multiple -M metrics.

-Andi