From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756230Ab1EBBVY (ORCPT ); Sun, 1 May 2011 21:21:24 -0400 Received: from smtp-out.google.com ([216.239.44.51]:54596 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755598Ab1EBBUA (ORCPT ); Sun, 1 May 2011 21:20:00 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=f2LjxE0TKaK4wFClQH3i+stDPSsPaGQQOd7fS9eg+lpzw0eoThfETvfx0BryB3fr1 yWUQK/8+aBNdth9ktxT4w== From: Nikhil Rao To: Ingo Molnar , Peter Zijlstra , Mike Galbraith Cc: linux-kernel@vger.kernel.org, "Nikunj A. Dadhania" , Srivatsa Vaddagiri , Stephan Barwolf , Nikhil Rao Subject: [PATCH v1 09/19] sched: update division in cpu_avg_load_per_task to use div_u64 Date: Sun, 1 May 2011 18:19:07 -0700 Message-Id: <1304299157-25769-10-git-send-email-ncrao@google.com> X-Mailer: git-send-email 1.7.3.1 In-Reply-To: <1304299157-25769-1-git-send-email-ncrao@google.com> References: <1304299157-25769-1-git-send-email-ncrao@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch updates the division in cpu_avg_load_per_task() to use div_u64, so that it works on 32-bit. We do not convert avg_load_per_task to u64 since this can be atmost 2^28, and fits into unsigned long on 32-bit. Signed-off-by: Nikhil Rao --- kernel/sched.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index a49ef0e..08dcd24 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -1524,7 +1524,7 @@ static unsigned long cpu_avg_load_per_task(int cpu) unsigned long nr_running = ACCESS_ONCE(rq->nr_running); if (nr_running) - rq->avg_load_per_task = rq->load.weight / nr_running; + rq->avg_load_per_task = div_u64(rq->load.weight, nr_running); else rq->avg_load_per_task = 0; -- 1.7.3.1