linux-kernel - Re: [PATCH v1 10/31] x86/resctrl: Move monitor init work to a resctrl init call

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Date: Mon, 8 Apr 2024 20:18:40 -0700
From: Reinette Chatre <reinette.chatre@...el.com>
To: James Morse <james.morse@....com>, <x86@...nel.org>,
	<linux-kernel@...r.kernel.org>
CC: Fenghua Yu <fenghua.yu@...el.com>, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, H Peter Anvin
	<hpa@...or.com>, Babu Moger <Babu.Moger@....com>,
	<shameerali.kolothum.thodi@...wei.com>, D Scott Phillips OS
	<scott@...amperecomputing.com>, <carl@...amperecomputing.com>,
	<lcherian@...vell.com>, <bobo.shaobowang@...wei.com>,
	<tan.shaopeng@...itsu.com>, <baolin.wang@...ux.alibaba.com>, Jamie Iles
	<quic_jiles@...cinc.com>, Xin Hao <xhao@...ux.alibaba.com>,
	<peternewman@...gle.com>, <dfustini@...libre.com>, <amitsinght@...vell.com>,
	David Hildenbrand <david@...hat.com>, Rex Nie <rex.nie@...uarmicro.com>, Dave
 Martin <dave.martin@....com>
Subject: Re: [PATCH v1 10/31] x86/resctrl: Move monitor init work to a resctrl
 init call

Hi James,

On 3/21/2024 9:50 AM, James Morse wrote:

..

> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index 13c24cb18d76..7a9696f53f2b 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -4138,6 +4138,10 @@ int __init resctrl_init(void)
>  
>  	rdtgroup_setup_default();
>  
> +	ret = resctrl_mon_resource_init();
> +	if (ret)
> +		return ret;
> +
>  	ret = sysfs_create_mount_point(fs_kobj, "resctrl");
>  	if (ret)
>  		return ret;

Should the mon data be cleaned up if sysfs_create_mount_point() fails?

Reinette