From: Adrian Hunter <adrian.hunter@intel.com>
To: Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 05/11] perf intel-pt: Use itrace error flags to suppress some errors
Date: Thu, 9 Jul 2020 21:13:38 +0300 [thread overview]
Message-ID: <3271e2cf-490b-5391-19e0-e1b019bfba1f@intel.com> (raw)
In-Reply-To: <20200709175046.GA1126680@tassilo.jf.intel.com>
On 9/07/20 8:50 pm, Andi Kleen wrote:
> On Thu, Jul 09, 2020 at 08:36:22PM +0300, Adrian Hunter wrote:
>> The itrace "e" option may be followed by a number which has the
>> following effect for Intel PT:
>> 1 Suppress overflow events
>> 2 Suppress trace data lost events
>> The values may be combined by bitwise OR'ing them.
>>
>> Suppressing those errors can be useful for testing and debugging
>> because they are not due to decoding.
>
> I suspect it will be useful to more than just decoding and debugging.
>
> But the number is not a nice user interface.
>
> How about e[....]
>
> like e[ol]
Do you mean literally square-brackets? If you were really unlucky you might
get pathname expansion with that.
>
> Also it's a bit unusual that this disables instead of enables, but ok.
>
> -Andi
>
next prev parent reply other threads:[~2020-07-09 18:14 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 17:36 [PATCH 00/11] perf intel-pt: Add support for decoding FUP/TIP only Adrian Hunter
2020-07-09 17:36 ` [PATCH 01/11] perf intel-pt: Fix FUP packet state Adrian Hunter
2020-07-09 17:36 ` [PATCH 02/11] perf intel-pt: Fix duplicate branch after CBR Adrian Hunter
2020-07-09 17:36 ` [PATCH 03/11] perf tools: Improve aux_output not supported error Adrian Hunter
2020-07-09 17:36 ` [PATCH 04/11] perf auxtrace: Add optional error flags to the itrace 'e' option Adrian Hunter
2020-07-09 17:36 ` [PATCH 05/11] perf intel-pt: Use itrace error flags to suppress some errors Adrian Hunter
2020-07-09 17:50 ` Andi Kleen
2020-07-09 18:13 ` Adrian Hunter [this message]
2020-07-09 18:22 ` Adrian Hunter
2020-07-20 22:18 ` Andi Kleen
2020-07-09 17:36 ` [PATCH 06/11] perf auxtrace: Add optional log flags to the itrace 'd' option Adrian Hunter
2020-07-09 17:51 ` Andi Kleen
2020-07-09 17:36 ` [PATCH 07/11] perf intel-pt: Use itrace debug log flags to suppress some messages Adrian Hunter
2020-07-09 17:36 ` [PATCH 08/11] perf intel-pt: Time filter logged perf events Adrian Hunter
2020-07-09 17:36 ` [PATCH 09/11] perf auxtrace: Add itrace 'q' option for quicker, less detailed decoding Adrian Hunter
2020-07-09 17:52 ` Andi Kleen
2020-07-09 17:36 ` [PATCH 10/11] perf intel-pt: Add support for decoding FUP/TIP only Adrian Hunter
2020-07-09 17:55 ` Andi Kleen
2020-07-09 17:36 ` [PATCH 11/11] perf intel-pt: Add support for decoding PSB+ only Adrian Hunter
2020-07-09 17:59 ` Andi Kleen
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