linux-kernel - Re: linux-next: Tree for Sep 7 (kernel/trace/trace

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Message-ID: <2c4a12e1-7970-f272-8883-db7c6ae36825@infradead.org>
Date:   Wed, 7 Sep 2016 11:34:24 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: Tree for Sep 7 (kernel/trace/trace_hwlat.c)

On 09/07/16 09:44, Steven Rostedt wrote:

> Thanks!
> 
> Below is the fix. I'll have to add it.
> 
> -- Steve
> 
> 
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index 72c07c2ffd79..d9000a81960e 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -224,6 +224,7 @@ config SCHED_TRACER
>  config HWLAT_TRACER
>  	bool "Tracer to detect hardware latencies (like SMIs)"
>  	select GENERIC_TRACER
> +	select TRACER_MAX_TRACE
>  	help
>  	 This tracer, when enabled will create one or more kernel threads,
>  	 depening on what the cpumask file is set to, which each thread
> 

Hm, now I get:

../kernel/trace/trace.c: In function 'tracing_set_tracer':
../kernel/trace/trace.c:4850:3: error: implicit declaration of function 'free_snapshot' [-Werror=implicit-function-declaration]
   free_snapshot(tr);
   ^
../kernel/trace/trace.c:4856:3: error: implicit declaration of function 'alloc_snapshot' [-Werror=implicit-function-declaration]
   ret = alloc_snapshot(tr);
   ^


-- 
~Randy