From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933225Ab2C1Wwy (ORCPT ); Wed, 28 Mar 2012 18:52:54 -0400 Received: from mail-gx0-f174.google.com ([209.85.161.174]:55435 "EHLO mail-gx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758949Ab2C1WwB (ORCPT ); Wed, 28 Mar 2012 18:52:01 -0400 From: Tejun Heo To: axboe@kernel.dk Cc: vgoyal@redhat.com, ctalbott@google.com, rni@google.com, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, containers@lists.linux-foundation.org, Tejun Heo Subject: [PATCH 15/21] blkcg: add blkio_policy_ops operations for exit and stat reset Date: Wed, 28 Mar 2012 15:51:25 -0700 Message-Id: <1332975091-10950-16-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.7.3 In-Reply-To: <1332975091-10950-1-git-send-email-tj@kernel.org> References: <1332975091-10950-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add blkio_policy_ops->blkio_exit_group_fn() and ->blkio_reset_group_stats_fn(). These will be used to further modularize blkcg policy implementation. Signed-off-by: Tejun Heo --- block/blk-cgroup.c | 16 ++++++++++++---- block/blk-cgroup.h | 4 ++++ 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 16158e5..e4848ee 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -131,12 +131,17 @@ static void blkg_free(struct blkio_group *blkg) return; for (i = 0; i < BLKIO_NR_POLICIES; i++) { + struct blkio_policy_type *pol = blkio_policy[i]; struct blkg_policy_data *pd = blkg->pd[i]; - if (pd) { - free_percpu(pd->stats_cpu); - kfree(pd); - } + if (!pd) + continue; + + if (pol && pol->ops.blkio_exit_group_fn) + pol->ops.blkio_exit_group_fn(blkg); + + free_percpu(pd->stats_cpu); + kfree(pd); } kfree(blkg); @@ -432,6 +437,9 @@ blkiocg_reset_stats(struct cgroup *cgroup, struct cftype *cftype, u64 val) blkg_stat_reset(&stats->empty_time); #endif blkio_reset_stats_cpu(blkg, pol->plid); + + if (pol->ops.blkio_reset_group_stats_fn) + pol->ops.blkio_reset_group_stats_fn(blkg); } } diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index c82de47..d0ee649 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -153,9 +153,13 @@ struct blkio_group { }; typedef void (blkio_init_group_fn)(struct blkio_group *blkg); +typedef void (blkio_exit_group_fn)(struct blkio_group *blkg); +typedef void (blkio_reset_group_stats_fn)(struct blkio_group *blkg); struct blkio_policy_ops { blkio_init_group_fn *blkio_init_group_fn; + blkio_exit_group_fn *blkio_exit_group_fn; + blkio_reset_group_stats_fn *blkio_reset_group_stats_fn; }; struct blkio_policy_type { -- 1.7.7.3