linux-kernel - Re: [PATCH v6 36/37] tracing: Add inter-event blurb to HIST

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Date:   Thu, 23 Nov 2017 15:57:48 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc:     rostedt@...dmis.org, tglx@...utronix.de, mhiramat@...nel.org,
        vedang.patel@...el.com, bigeasy@...utronix.de,
        joel.opensrc@...il.com, joelaf@...gle.com,
        mathieu.desnoyers@...icios.com, baohong.liu@...el.com,
        rajvi.jingar@...el.com, julia@...com, fengguang.wu@...el.com,
        linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org,
        kernel-team@....com
Subject: Re: [PATCH v6 36/37] tracing: Add inter-event blurb to HIST_TRIGGERS
 config option

On Fri, Nov 17, 2017 at 02:33:15PM -0600, Tom Zanussi wrote:
> So that users know that inter-event tracing is supported as part of
> the HIST_TRIGGERS option, include text to that effect in the help
> text.
> 
> Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
> ---
>  kernel/trace/Kconfig | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index b8395a0..b01536d 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -596,6 +596,9 @@ config HIST_TRIGGERS
>  	  event activity as an initial guide for further investigation
>  	  using more advanced tools.
>  
> +	  Inter-event tracing of quantities such as latencies is also
> +	  supported using hist triggers under this option.
> +
>  	  See Documentation/trace/events.txt.

Unrelated, but the doc was renamed. :)

Thanks,
Namhyung


>  	  If in doubt, say N.
>  
> -- 
> 1.9.3
>