linux-kernel - Re: [PATCH 19/32] sched.h: Add rg_list and rdtgroup in task

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Message-ID: <CACbG30-8t-d4RdjN8t6-DfrcErD32=egAnLGqke6EiS_yeQQJA@mail.gmail.com>
Date:	Thu, 28 Jul 2016 00:53:13 -0500
From:	Nilay Vaish <nilayvaish@...il.com>
To:	Fenghua Yu <fenghua.yu@...el.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <h.peter.anvin@...el.com>,
	Tony Luck <tony.luck@...el.com>, Tejun Heo <tj@...nel.org>,
	Borislav Petkov <bp@...e.de>,
	Stephane Eranian <eranian@...gle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	David Carrillo-Cisneros <davidcc@...gle.com>,
	Ravi V Shankar <ravi.v.shankar@...el.com>,
	Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
	Sai Prakhya <sai.praneeth.prakhya@...el.com>,
	linux-kernel <linux-kernel@...r.kernel.org>, x86 <x86@...nel.org>
Subject: Re: [PATCH 19/32] sched.h: Add rg_list and rdtgroup in task_struct

On 12 July 2016 at 20:02, Fenghua Yu <fenghua.yu@...el.com> wrote:
> From: Fenghua Yu <fenghua.yu@...el.com>
>
> rg_list is linked list to connect to other tasks in a rdtgroup.
>
> The point of rdtgroup allows the task to access its own rdtgroup directly.
>
> Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
> Reviewed-by: Tony Luck <tony.luck@...el.com>
> ---
>  include/linux/sched.h | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index 253538f..55adf17 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1761,6 +1761,10 @@ struct task_struct {
>         /* cg_list protected by css_set_lock and tsk->alloc_lock */
>         struct list_head cg_list;
>  #endif
> +#ifdef CONFIG_INTEL_RDT
> +       struct list_head rg_list;
> +       struct rdtgroup *rdtgroup;
> +#endif
>  #ifdef CONFIG_FUTEX
>         struct robust_list_head __user *robust_list;
>  #ifdef CONFIG_COMPAT
> --
> 2.5.0
>

I think this patch should be merged with patch 22/32 since struct
rdtgroup 's definition appears in the patch 22/32.  I do not recall
seeing any forward declaration either.

--
Nilay