linux-kernel - Re: [PATCH] Oprofile Multiplexing Patch

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Date:	Sat, 26 Jul 2008 13:16:26 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Robert Richter <robert.richter@....com>
Cc:	Jason Yeh <jason.yeh@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	oprofile-list <oprofile-list@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Oprofile Multiplexing Patch


> From: Jason Yeh <jason.yeh@....com>

> diff --git a/arch/x86/oprofile/op_model_p4.c b/arch/x86/oprofile/op_model_p4.c
> index 56b4757..e641545 100644
> --- a/arch/x86/oprofile/op_model_p4.c
> +++ b/arch/x86/oprofile/op_model_p4.c
> @@ -701,6 +701,8 @@ static void p4_shutdown(struct op_msrs const * const msrs)
>  struct op_x86_model_spec const op_p4_ht2_spec = {
>  	.num_counters = NUM_COUNTERS_HT2,
>  	.num_controls = NUM_CONTROLS_HT2,
> +	.num_hardware_counters = NUM_COUNTERS_HT2,
> +	.num_hardware_controls = NUM_CONTROLS_HT2,

is there any further change needed for Intel CPUs to benefit from 
multiplexing too, up to the max of 32 controls? (AFAICS it should work 
as-is, correct?)

	Ingo
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