linux-kernel - Re: [PATCH v1 14/31] x86/resctrl: Export the is_mbm_*

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Message-ID: <67021f34-65fd-4ea8-b696-b5d797ae9dbc@intel.com>
Date: Mon, 8 Apr 2024 20:20:12 -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 14/31] x86/resctrl: Export the is_mbm_*_enabled()
 helpers to asm/resctrl.h

Hi James,

On 3/21/2024 9:50 AM, James Morse wrote:
> The architecture specific parts of resctrl have helpers to hide accesses
> to the rdt_mon_features bitmap.
> 
> Once the filesystem parts of resctrl are moved, these can no longer live
> in internal.h. Once these are exposed to the wider kernel, they should
> have a 'resctrl_arch_' prefix, to fit the rest of the arch<->fs interface.
> 
> Move and rename the helpers that touch rdt_mon_features directly.
> is_mbm_event() and is_mbm_enabled() are only called from rdtgroup.c,
> so can be moved into that file.
> 
> Signed-off-by: James Morse <james.morse@....com>
> ---
>  arch/x86/include/asm/resctrl.h         | 17 +++++++++++
>  arch/x86/kernel/cpu/resctrl/core.c     |  4 +--
>  arch/x86/kernel/cpu/resctrl/internal.h | 27 -----------------
>  arch/x86/kernel/cpu/resctrl/monitor.c  | 18 ++++++------
>  arch/x86/kernel/cpu/resctrl/rdtgroup.c | 40 +++++++++++++++++---------
>  5 files changed, 54 insertions(+), 52 deletions(-)
> 
> diff --git a/arch/x86/include/asm/resctrl.h b/arch/x86/include/asm/resctrl.h
> index 5f6a5375bb4a..50407e83d0ca 100644
> --- a/arch/x86/include/asm/resctrl.h
> +++ b/arch/x86/include/asm/resctrl.h
> @@ -7,6 +7,7 @@
>  #include <linux/jump_label.h>
>  #include <linux/percpu.h>
>  #include <linux/sched.h>
> +#include <linux/resctrl_types.h>
>  

Can this be alphabetical?

Reinette