Re: [PATCH 4/6] trace: Make UPROBES depend on PERF_EVENTS

[Steven Rostedt]

On Fri,  4 Oct 2013 14:39:46 -0700
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:

> From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> 
> UPROBES need the perf events code, so add a dependency
> from PERF_EVENTS to UPROBES.

Can you please be a bit more specific on what uprobes requires of perf?
That is, what part of the perf events code is needed, and why?

-- Steve

> 
> Cc: rostedt@xxxxxxxxxxx
> Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
> ---
>  kernel/trace/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index 015f85a..8639819 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -424,6 +424,7 @@ config UPROBE_EVENT
>  	bool "Enable uprobes-based dynamic events"
>  	depends on ARCH_SUPPORTS_UPROBES
>  	depends on MMU
> +	depends on PERF_EVENTS
>  	select UPROBES
>  	select PROBE_EVENTS
>  	select TRACING

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