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Date: Sun, 26 Jul 2015 18:36:39 +0200
From: Jiri Olsa <jolsa@redhat.com>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Andy Lutomirski <luto@amacapital.net>,
        Vince Weaver <vincent.weaver@maine.edu>,
        Thomas Gleixner <tglx@linutronix.de>,
        "H. Peter Anvin" <hpa@linux.intel.com>, linux-kernel@vger.kernel.org,
        Stephane Eranian <eranian@google.com>, Borislav Petkov <bp@suse.de>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH RFC] perf: Let PMUs provide supplementary information
Message-ID: <20150726163639.GC17020@krava.brq.redhat.com>
References: <1437723969-19558-1-git-send-email-adrian.hunter@intel.com>
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On Fri, Jul 24, 2015 at 10:46:09AM +0300, Adrian Hunter wrote:
> This is a follow-up to "[RFC PATCH] perf: Provide status of known PMUs" i.e.
> 
> 	https://lkml.kernel.org/r/1436428080-3098-1-git-send-email-adrian.hunter@intel.com
> 
> There are 3 main changes:
> 	- uses debugfs not sysfs
> 	- doesn't require a PMU to be on the list of known PMU's
> 	- renamed from 'known_pmus' to 'pmu_supplementary_info'

do you plan any perf tool related change?
'perf list' could display this info

tested..

[root@ibm-x3650m4-01 pmu_supplementary_info]# pwd
/sys/kernel/debug/perf/pmu_supplementary_info
[root@ibm-x3650m4-01 pmu_supplementary_info]# ll
total 0
-r--r--r--. 1 root root 0 Jul 26 18:22 intel_bts
-r--r--r--. 1 root root 0 Jul 26 18:22 intel_pt
[root@ibm-x3650m4-01 pmu_supplementary_info]# cat *
Enabled
Disabled: Not supported by the hardware

jirka