linux-kernel - Re: [PATCH v5 1/2] cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.11.1506251652300.4037@nanos>
Date:	Thu, 25 Jun 2015 16:57:59 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Vitaly Kuznetsov <vkuznets@...hat.com>
cc:	devel@...uxdriverproject.org,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	linux-kernel@...r.kernel.org, Dexuan Cui <decui@...rosoft.com>,
	Ingo Molnar <mingo@...nel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Radim Krčmář <rkrcmar@...hat.com>,
	gregkh@...uxfoundation.org
Subject: Re: [PATCH v5 1/2] cpu-hotplug: export
 cpu_hotplug_enable/cpu_hotplug_disable

On Thu, 25 Jun 2015, Vitaly Kuznetsov wrote:

> Loaded Hyper-V module will use these functions to disable CPU hotplug
> under certain circumstances. Convert cpu_hotplug_disabled to a counter
> (protected by cpu_add_remove_lock) to support e.g. disable -> disable ->
> enable call sequences.

This changelog including the subject line still sucks.

Q: How is the counter change related subject line?
A: Not at all.

Q: Why do we need to change this to a counter?
A: Because

Q: What problem is being solved?
A: Dunno

Q: Why do we need the export?
A: HyperV having certain circumstances

Summary: The changelog is useless

The patch wants to be split in two parts:

1) Make the counter change and explain why the current mode is not
   sufficient and what kind of problem can be solved

2) Export the functions with a proper explanation why.

Thanks,

	tglx


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/