linux-kernel - Re: [PATCH] tracing: Have HIST

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Date:	Tue, 5 Jul 2016 15:48:38 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc:	"linux-kernel@...r.kernel.org >> LKML" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tracing: Have HIST_TRIGGERS select TRACING

On Sun, 03 Jul 2016 08:51:34 -0500
Tom Zanussi <tom.zanussi@...ux.intel.com> wrote:

> The kbuild test robot reported a compile error if HIST_TRIGGERS was
> enabled but nothing else that selected TRACING was configured in.
> 
> HIST_TRIGGERS should directly select it and not rely on anything else
> to do it.
> 

I added:

Reported-by: kbuild test robot <fennguang.wu@...el.com>
Fixes: 7ef224d1d0e3a ("tracing: Add 'hist' event trigger command")


This isn't that big of a deal, so I'm just going to put it into my
queue for the next merge window.

-- Steve


> Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
> ---
>  kernel/trace/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index fafeaf8..f4b86e8 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -542,6 +542,7 @@ config HIST_TRIGGERS
>  	bool "Histogram triggers"
>  	depends on ARCH_HAVE_NMI_SAFE_CMPXCHG
>  	select TRACING_MAP
> +	select TRACING
>  	default n
>  	help
>  	  Hist triggers allow one or more arbitrary trace event fields