linux-kernel - Re: [PATCH v6 2/3] perf tool: add PERF_RECORD_NAMESPACES to include namespaces related info

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Date:   Wed, 8 Feb 2017 13:57:26 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Hari Bathini <hbathini@...ux.vnet.ibm.com>
Cc:     ast@...com, peterz@...radead.org,
        lkml <linux-kernel@...r.kernel.org>, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, mingo@...hat.com,
        daniel@...earbox.net, rostedt@...dmis.org,
        Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        ebiederm@...ssion.com, sargun@...gun.me,
        Aravinda Prasad <aravinda@...ux.vnet.ibm.com>,
        brendan.d.gregg@...il.com
Subject: Re: [PATCH v6 2/3] perf tool: add PERF_RECORD_NAMESPACES to include
 namespaces related info

On Wed, Feb 08, 2017 at 02:01:49PM +0530, Hari Bathini wrote:

SNIP

> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index ffac8ca..1946a17 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -875,6 +875,9 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
>  	signal(SIGTERM, sig_handler);
>  	signal(SIGSEGV, sigsegv_handler);
>  
> +	if (rec->opts.record_namespaces)
> +		tool->namespace_events = true;

should we do this by default? seems like low traffic event
with info that should be always present

also in case we keep the --namespace option, please add
it to the record's doc

jirka