Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755703Ab2ECKwY (ORCPT ); Thu, 3 May 2012 06:52:24 -0400 Received: from mail-lb0-f174.google.com ([209.85.217.174]:41370 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753981Ab2ECKwX (ORCPT ); Thu, 3 May 2012 06:52:23 -0400 Date: Thu, 3 May 2012 13:52:11 +0300 (EEST) From: Pekka Enberg X-X-Sender: penberg@tux.localdomain To: Anton Vorontsov cc: Leonid Moiseichuk , John Stultz , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, patches@linaro.org, kernel-team@android.com Subject: Re: [PATCH v4] vmevent: Implement greater-than attribute state and one-shot mode In-Reply-To: <20120501131806.GA22249@lizard> Message-ID: References: <20120418083208.GA24904@lizard> <20120418083523.GB31556@lizard> <20120418224629.GA22150@lizard> <20120419162923.GA26630@lizard> <20120501131806.GA22249@lizard> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1209 Lines: 28 On Tue, 1 May 2012, Anton Vorontsov wrote: > This patch implements a new event type, it will trigger whenever a > value becomes greater than user-specified threshold, it complements > the 'less-then' trigger type. > > Also, let's implement the one-shot mode for the events, when set, > userspace will only receive one notification per crossing the > boundaries. > > Now when both LT and GT are set on the same level, the event type > works as a cross event type: it triggers whenever a value crosses > the threshold from a lesser values side to a greater values side, > and vice versa. > > We use the event types in an userspace low-memory killer: we get a > notification when memory becomes low, so we start freeing memory by > killing unneeded processes, and we get notification when memory hits > the threshold from another side, so we know that we freed enough of > memory. > > Signed-off-by: Anton Vorontsov Applied, thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/