linux-kernel - Re: [RFC PATCH 2/5] perf jevents: add support for arch recommended events

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180102174814.GT25156@tassilo.jf.intel.com>
Date:   Tue, 2 Jan 2018 09:48:14 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     John Garry <john.garry@...wei.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, peterz@...radead.org,
        mingo@...hat.com, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, namhyung@...nel.org,
        wcohen@...hat.com, will.deacon@....com,
        ganapatrao.kulkarni@...ium.com, catalin.marinas@....com,
        mark.rutland@....com, xuwei5@...ilicon.com, linuxarm@...wei.com,
        zhangshaokun@...ilicon.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 2/5] perf jevents: add support for arch recommended
 events

> Can you describe how you autogenerate the JSONs? Do you have some internal
> proprietary HW file format describing events, with files supplied from HW
> designer, which you can just translate into a JSON? Would the files support
> deferencing events to improve scalability?

For Intel JSON is an official format, which is maintained for each CPU.
It is automatically generated from an internal database
https://download.01.org/perfmon/

I have some python scripts to convert these Intel JSONs into the perf
format (which has some additional headers, and is split into
different categories, and add metrics).  

They have some Intel specifics, so may not be useful for you. 

There's no support for dereference, each CPU gets its own unique file.

But you could do the a merge simply with the attached script which merges
two JSON files. 

-Andi

View attachment "merge-json" of type "text/plain" (283 bytes)