linux-kernel - Re: [PATCH v10 24/24] x86/resctrl: Introduce interface to modify assignment states of the groups

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Message-ID: <a14c9534-6176-4459-af24-9668d35abcd3@intel.com>
Date: Thu, 19 Dec 2024 19:23:50 -0800
From: Reinette Chatre <reinette.chatre@...el.com>
To: Babu Moger <babu.moger@....com>, <corbet@....net>, <tglx@...utronix.de>,
	<mingo@...hat.com>, <bp@...en8.de>, <dave.hansen@...ux.intel.com>,
	<tony.luck@...el.com>, <peternewman@...gle.com>
CC: <fenghua.yu@...el.com>, <x86@...nel.org>, <hpa@...or.com>,
	<paulmck@...nel.org>, <akpm@...ux-foundation.org>, <thuth@...hat.com>,
	<rostedt@...dmis.org>, <xiongwei.song@...driver.com>,
	<pawan.kumar.gupta@...ux.intel.com>, <daniel.sneddon@...ux.intel.com>,
	<jpoimboe@...nel.org>, <perry.yuan@....com>, <sandipan.das@....com>,
	<kai.huang@...el.com>, <xiaoyao.li@...el.com>, <seanjc@...gle.com>,
	<xin3.li@...el.com>, <andrew.cooper3@...rix.com>, <ebiggers@...gle.com>,
	<mario.limonciello@....com>, <james.morse@....com>,
	<tan.shaopeng@...itsu.com>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <maciej.wieczor-retman@...el.com>,
	<eranian@...gle.com>
Subject: Re: [PATCH v10 24/24] x86/resctrl: Introduce interface to modify
 assignment states of the groups

Hi Babu,

On 12/12/24 12:15 PM, Babu Moger wrote:
> Introduce the interface to assign MBM events in mbm_cntr_assign mode.

Seems like something is missing ... there is no mention about what
MBM events are assigned "to".

...

> +	if (assign_state & ASSIGN_LOCAL) {
> +		ret = rdtgroup_assign_cntr_event(r, rdtgrp, d, QOS_L3_MBM_LOCAL_EVENT_ID);
> +		if (ret)
> +			goto out_fail;
> +	}
> +
> +	goto next;
> +
> +out_fail:
> +	sprintf(domain, d ? "%ld" : "*", dom_id);
> +

The static checker I tried complains that dom_id can be used uninitialized.

Reinette