linux-kernel - Re: [PATCH 3/9] perf sched replay: Alloc the memory of pid_to_task dynamically to adapt to the unexpected change of pid

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Message-ID: <551B1EFC.305@gmail.com>
Date:	Tue, 31 Mar 2015 16:26:04 -0600
From:	David Ahern <dsahern@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
CC:	Yunlong Song <yunlong.song@...wei.com>, a.p.zijlstra@...llo.nl,
	paulus@...ba.org, mingo@...hat.com, linux-kernel@...r.kernel.org,
	wangnan0@...wei.com
Subject: Re: [PATCH 3/9] perf sched replay: Alloc the memory of pid_to_task
 dynamically to adapt to the unexpected change of pid_max

On 3/31/15 2:25 PM, Arnaldo Carvalho de Melo wrote:
>
> Humm, we already have an rb_tree for each task, its called
> machine->threads, and it has struct thread instances, that in turn have
> a ->priv point, can't it be used here?
>

I think that would require a lot of churn to the existing code. The 
command could definitely use some modernizing, but it will take time.

David

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