Re: [PATCH 0/26] oprofile: Performance counter multiplexing

[Andi Kleen]

Robert Richter <robert.richter@xxxxxxx> writes:
>  	  If unsure, say N.
>  
> +config OPROFILE_EVENT_MULTIPLEX
> +	bool "OProfile multiplexing support (EXPERIMENTAL)"
> +	default n
> +	depends on OPROFILE && X86
> +	help
> +	  The number of hardware counters is limited. The multiplexing
> +	  feature enables OProfile to gather more events than counters
> +	  are provided by the hardware. This is realized by switching
> +	  between events at an user specified time interval.
> +

I would suggest to drop that CONFIG and have the code unconditional.
It's not a lot code and should be always available.

Will do more detailed review later and will look at Intel P6 support.

Where's the userland support for this?

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/