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From: David Rientjes <rientjes@google.com>
To: "Arve Hjønnevåg" <arve@android.com>
Cc: John Stultz <john.stultz@linaro.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Android Kernel Team <kernel-team@android.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 1/5] staging: android: lowmemorykiller: Add config option to support oom_adj values
Date: Wed, 27 Feb 2013 15:12:55 -0800 (PST)	[thread overview]
Message-ID: <alpine.DEB.2.02.1302271509230.24485@chino.kir.corp.google.com> (raw)
In-Reply-To: <CAMP5XgcjdZk5MZ9v+W5phgWgE4Q0Pc_2FfopapjctsV6sdguLQ@mail.gmail.com>

[-- Attachment #1: Type: TEXT/PLAIN, Size: 904 bytes --]

On Wed, 27 Feb 2013, Arve Hjønnevåg wrote:

> > Umm, writes to /proc/pid/oom_adj already are converted to the
> > /proc/pid/oom_score_adj scale linearly.  Heavy NACK to this patch since
> > oom_adj is completely deprecated.
> 
> I know it is deprecated, but your change, staging: android,
> lowmemorykiller: convert to use oom_score_adj, broke existing
> user-space code that still write to /proc/pid/oom_adj. This option
> lets you build a kernel that supports our user-space code until that
> user-space has been converted to use /proc/pid/oom_score_adj.
> 

As stated, writes to /proc/pid/oom_adj already are converted to a linear 
scale and stored in /proc/pid/oom_score_adj.  This is done with

	oom_adj == 15	->	oom_score_adj = 1000
	oom_adj != 15	->	oom_score_adj = (oom_adj * -1000) / -17

since the maximum oom_score_adj is 1000 and the minimum oom_adj is -17.

How does this not work as needed?

  reply	other threads:[~2013-02-27 23:12 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-27  6:07 [PATCH 0/5] staging: Updates from the Android tree (for 3.10) John Stultz
2013-02-27  6:07 ` [PATCH 1/5] staging: android: lowmemorykiller: Add config option to support oom_adj values John Stultz
2013-02-27 22:18   ` David Rientjes
2013-02-27 22:38     ` Arve Hjønnevåg
2013-02-27 23:12       ` David Rientjes [this message]
2013-02-27 23:47         ` Arve Hjønnevåg
2013-02-28  0:14           ` David Rientjes
2013-02-28  1:05             ` Arve Hjønnevåg
2013-02-28  1:41               ` David Rientjes
2013-02-27  6:07 ` [PATCH 2/5] staging: android: lowmemorykiller: Don't count reserved free memory John Stultz
2013-02-27 22:19   ` David Rientjes
2013-02-27  6:07 ` [PATCH 3/5] staging: android: lowmemorykiller: Change default debug_level to 1 John Stultz
2013-02-27  6:07 ` [PATCH 4/5] staging: android: logger: Allow a UID to read it's own log entries John Stultz
2013-02-27  6:07 ` [PATCH 5/5] staging: android: logger: enforce GID and CAP check on log flush John Stultz
2013-03-05  8:39 ` [PATCH 0/5] staging: Updates from the Android tree (for 3.10) Greg Kroah-Hartman
2013-03-05  9:56   ` John Stultz

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