linux-kernel - Re: [PATCH 13/24] OProfile: Change IBS interrupt initialization

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Date:	Sat, 26 Jul 2008 12:05:18 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Robert Richter <robert.richter@....com>
Cc:	Barry Kasindorf <barry.kasindorf@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	oprofile-list <oprofile-list@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 13/24] OProfile: Change IBS interrupt initialization


* Robert Richter <robert.richter@....com> wrote:

> +static int pfm_amd64_setup_eilvt(void)
> +{
> +#define IBSCTL_LVTOFFSETVAL		(1 << 8)
> +#define IBSCTL				0x1cc

move this into a header file please.

> +	cpu_cfg = NULL;
> +	do {
> +		cpu_cfg = pci_get_device(PCI_VENDOR_ID_AMD,
> +					 PCI_DEVICE_ID_AMD_10H_NB_MISC,
> +					 cpu_cfg);
> +		if (!cpu_cfg)
> +			break;
> +		++nodes;
> +		pci_write_config_dword(cpu_cfg, IBSCTL, ibs_eilvt_off
> +				       | IBSCTL_LVTOFFSETVAL);
> +		pci_read_config_dword(cpu_cfg, IBSCTL, &value);
> +		if (value != (ibs_eilvt_off | IBSCTL_LVTOFFSETVAL)) {
> +			printk(KERN_DEBUG "Failed to setup IBS LVT offset, "
> +				"IBSCTL = 0x%08x", value);
> +			return 1;
> +		}
> +	} while (1);

helper function for the iterator would help a bit i guess.

	Ingo
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