Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757282Ab0FTW4k (ORCPT ); Sun, 20 Jun 2010 18:56:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56750 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755064Ab0FTW4i (ORCPT ); Sun, 20 Jun 2010 18:56:38 -0400 Date: Sun, 20 Jun 2010 18:56:22 -0400 From: Vivek Goyal To: Ingo Molnar Cc: linux kernel mailing list , Jens Axboe , Divyesh Shah Subject: Re: [PATCH] cfq-iosched: Fixed boot warning with BLK_CGROUP=y and CFQ_GROUP_IOSCHED=n Message-ID: <20100620225622.GA12368@redhat.com> References: <20100618143947.GA8431@redhat.com> <20100620081016.GA5365@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100620081016.GA5365@elte.hu> User-Agent: Mutt/1.5.20 (2009-12-10) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 11498 Lines: 346 On Sun, Jun 20, 2010 at 10:10:16AM +0200, Ingo Molnar wrote: > > * Vivek Goyal wrote: > > > Hi Jens, > > > > Few days back Ingo noticed a CFQ boot time warning. This patch fixes it. > > Hm, have you tested it? This bit: I did compile and boot testing. Booted with CFQ_GROUP_IOSCHED=n to make sure warning seen by you is gone. And IIRC, I also booted with CFQ_GROUP_IOSCHED=y and it seems to compile and boot just fine. Not sure why though. > > > +++ linux-2.6/block/cfq.h 2010-06-18 09:41:23.256220395 -0400 > > > +static inline void cfq_blkiocg_update_completion_stats(struct blkio_group *blkg, uint64_t start_time, uint64_t io_start_time, bool direction, bool sync) > > +{ > > + cfq_blkiocg_update_completion_stats(blkg, start_time, io_start_time, > > + direction, sync); > > +} > > is an inline function calling itself. That's my mistake. Sorry for that. Here is the new patch fixing this issue. Signed-off-by: Vivek Goyal --- block/cfq-iosched.c | 54 ++++++++++++------------ block/cfq.h | 116 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 143 insertions(+), 27 deletions(-) Index: linux-2.6/block/cfq-iosched.c =================================================================== --- linux-2.6.orig/block/cfq-iosched.c 2010-06-18 09:40:46.403163874 -0400 +++ linux-2.6/block/cfq-iosched.c 2010-06-18 09:47:58.747339881 -0400 @@ -14,7 +14,7 @@ #include #include #include -#include "blk-cgroup.h" +#include "cfq.h" /* * tunables @@ -879,7 +879,7 @@ if (!RB_EMPTY_NODE(&cfqg->rb_node)) cfq_rb_erase(&cfqg->rb_node, st); cfqg->saved_workload_slice = 0; - blkiocg_update_dequeue_stats(&cfqg->blkg, 1); + cfq_blkiocg_update_dequeue_stats(&cfqg->blkg, 1); } static inline unsigned int cfq_cfqq_slice_usage(struct cfq_queue *cfqq) @@ -939,8 +939,8 @@ cfq_log_cfqg(cfqd, cfqg, "served: vt=%llu min_vt=%llu", cfqg->vdisktime, st->min_vdisktime); - blkiocg_update_timeslice_used(&cfqg->blkg, used_sl); - blkiocg_set_start_empty_time(&cfqg->blkg); + cfq_blkiocg_update_timeslice_used(&cfqg->blkg, used_sl); + cfq_blkiocg_set_start_empty_time(&cfqg->blkg); } #ifdef CONFIG_CFQ_GROUP_IOSCHED @@ -995,7 +995,7 @@ /* Add group onto cgroup list */ sscanf(dev_name(bdi->dev), "%u:%u", &major, &minor); - blkiocg_add_blkio_group(blkcg, &cfqg->blkg, (void *)cfqd, + cfq_blkiocg_add_blkio_group(blkcg, &cfqg->blkg, (void *)cfqd, MKDEV(major, minor)); cfqg->weight = blkcg_get_weight(blkcg, cfqg->blkg.dev); @@ -1079,7 +1079,7 @@ * it from cgroup list, then it will take care of destroying * cfqg also. */ - if (!blkiocg_del_blkio_group(&cfqg->blkg)) + if (!cfq_blkiocg_del_blkio_group(&cfqg->blkg)) cfq_destroy_cfqg(cfqd, cfqg); } } @@ -1421,10 +1421,10 @@ { elv_rb_del(&cfqq->sort_list, rq); cfqq->queued[rq_is_sync(rq)]--; - blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg, rq_data_dir(rq), - rq_is_sync(rq)); + cfq_blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg, + rq_data_dir(rq), rq_is_sync(rq)); cfq_add_rq_rb(rq); - blkiocg_update_io_add_stats(&(RQ_CFQG(rq))->blkg, + cfq_blkiocg_update_io_add_stats(&(RQ_CFQG(rq))->blkg, &cfqq->cfqd->serving_group->blkg, rq_data_dir(rq), rq_is_sync(rq)); } @@ -1482,8 +1482,8 @@ cfq_del_rq_rb(rq); cfqq->cfqd->rq_queued--; - blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg, rq_data_dir(rq), - rq_is_sync(rq)); + cfq_blkiocg_update_io_remove_stats(&(RQ_CFQG(rq))->blkg, + rq_data_dir(rq), rq_is_sync(rq)); if (rq_is_meta(rq)) { WARN_ON(!cfqq->meta_pending); cfqq->meta_pending--; @@ -1518,8 +1518,8 @@ static void cfq_bio_merged(struct request_queue *q, struct request *req, struct bio *bio) { - blkiocg_update_io_merged_stats(&(RQ_CFQG(req))->blkg, bio_data_dir(bio), - cfq_bio_sync(bio)); + cfq_blkiocg_update_io_merged_stats(&(RQ_CFQG(req))->blkg, + bio_data_dir(bio), cfq_bio_sync(bio)); } static void @@ -1539,8 +1539,8 @@ if (cfqq->next_rq == next) cfqq->next_rq = rq; cfq_remove_request(next); - blkiocg_update_io_merged_stats(&(RQ_CFQG(rq))->blkg, rq_data_dir(next), - rq_is_sync(next)); + cfq_blkiocg_update_io_merged_stats(&(RQ_CFQG(rq))->blkg, + rq_data_dir(next), rq_is_sync(next)); } static int cfq_allow_merge(struct request_queue *q, struct request *rq, @@ -1571,7 +1571,7 @@ static inline void cfq_del_timer(struct cfq_data *cfqd, struct cfq_queue *cfqq) { del_timer(&cfqd->idle_slice_timer); - blkiocg_update_idle_time_stats(&cfqq->cfqg->blkg); + cfq_blkiocg_update_idle_time_stats(&cfqq->cfqg->blkg); } static void __cfq_set_active_queue(struct cfq_data *cfqd, @@ -1580,7 +1580,7 @@ if (cfqq) { cfq_log_cfqq(cfqd, cfqq, "set_active wl_prio:%d wl_type:%d", cfqd->serving_prio, cfqd->serving_type); - blkiocg_update_avg_queue_size_stats(&cfqq->cfqg->blkg); + cfq_blkiocg_update_avg_queue_size_stats(&cfqq->cfqg->blkg); cfqq->slice_start = 0; cfqq->dispatch_start = jiffies; cfqq->allocated_slice = 0; @@ -1911,7 +1911,7 @@ sl = cfqd->cfq_slice_idle; mod_timer(&cfqd->idle_slice_timer, jiffies + sl); - blkiocg_update_set_idle_time_stats(&cfqq->cfqg->blkg); + cfq_blkiocg_update_set_idle_time_stats(&cfqq->cfqg->blkg); cfq_log_cfqq(cfqd, cfqq, "arm_idle: %lu", sl); } @@ -1931,7 +1931,7 @@ elv_dispatch_sort(q, rq); cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]++; - blkiocg_update_dispatch_stats(&cfqq->cfqg->blkg, blk_rq_bytes(rq), + cfq_blkiocg_update_dispatch_stats(&cfqq->cfqg->blkg, blk_rq_bytes(rq), rq_data_dir(rq), rq_is_sync(rq)); } @@ -3248,7 +3248,7 @@ cfq_clear_cfqq_wait_request(cfqq); __blk_run_queue(cfqd->queue); } else { - blkiocg_update_idle_time_stats( + cfq_blkiocg_update_idle_time_stats( &cfqq->cfqg->blkg); cfq_mark_cfqq_must_dispatch(cfqq); } @@ -3276,7 +3276,7 @@ rq_set_fifo_time(rq, jiffies + cfqd->cfq_fifo_expire[rq_is_sync(rq)]); list_add_tail(&rq->queuelist, &cfqq->fifo); cfq_add_rq_rb(rq); - blkiocg_update_io_add_stats(&(RQ_CFQG(rq))->blkg, + cfq_blkiocg_update_io_add_stats(&(RQ_CFQG(rq))->blkg, &cfqd->serving_group->blkg, rq_data_dir(rq), rq_is_sync(rq)); cfq_rq_enqueued(cfqd, cfqq, rq); @@ -3364,9 +3364,9 @@ WARN_ON(!cfqq->dispatched); cfqd->rq_in_driver--; cfqq->dispatched--; - blkiocg_update_completion_stats(&cfqq->cfqg->blkg, rq_start_time_ns(rq), - rq_io_start_time_ns(rq), rq_data_dir(rq), - rq_is_sync(rq)); + cfq_blkiocg_update_completion_stats(&cfqq->cfqg->blkg, + rq_start_time_ns(rq), rq_io_start_time_ns(rq), + rq_data_dir(rq), rq_is_sync(rq)); cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--; @@ -3730,7 +3730,7 @@ cfq_put_async_queues(cfqd); cfq_release_cfq_groups(cfqd); - blkiocg_del_blkio_group(&cfqd->root_group.blkg); + cfq_blkiocg_del_blkio_group(&cfqd->root_group.blkg); spin_unlock_irq(q->queue_lock); @@ -3798,8 +3798,8 @@ */ atomic_set(&cfqg->ref, 1); rcu_read_lock(); - blkiocg_add_blkio_group(&blkio_root_cgroup, &cfqg->blkg, (void *)cfqd, - 0); + cfq_blkiocg_add_blkio_group(&blkio_root_cgroup, &cfqg->blkg, + (void *)cfqd, 0); rcu_read_unlock(); #endif /* Index: linux-2.6/block/cfq.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6/block/cfq.h 2010-06-20 18:47:29.990241567 -0400 @@ -0,0 +1,116 @@ +#ifndef _CFQ_H +#define _CFQ_H +#include "blk-cgroup.h" + +#ifdef CONFIG_CFQ_GROUP_IOSCHED +static inline void cfq_blkiocg_update_io_add_stats(struct blkio_group *blkg, + struct blkio_group *curr_blkg, bool direction, bool sync) +{ + blkiocg_update_io_add_stats(blkg, curr_blkg, direction, sync); +} + +static inline void cfq_blkiocg_update_dequeue_stats(struct blkio_group *blkg, + unsigned long dequeue) +{ + blkiocg_update_dequeue_stats(blkg, dequeue); +} + +static inline void cfq_blkiocg_update_timeslice_used(struct blkio_group *blkg, + unsigned long time) +{ + blkiocg_update_timeslice_used(blkg, time); +} + +static inline void cfq_blkiocg_set_start_empty_time(struct blkio_group *blkg) +{ + blkiocg_set_start_empty_time(blkg); +} + +static inline void cfq_blkiocg_update_io_remove_stats(struct blkio_group *blkg, + bool direction, bool sync) +{ + blkiocg_update_io_remove_stats(blkg, direction, sync); +} + +static inline void cfq_blkiocg_update_io_merged_stats(struct blkio_group *blkg, + bool direction, bool sync) +{ + blkiocg_update_io_merged_stats(blkg, direction, sync); +} + +static inline void cfq_blkiocg_update_idle_time_stats(struct blkio_group *blkg) +{ + blkiocg_update_idle_time_stats(blkg); +} + +static inline void +cfq_blkiocg_update_avg_queue_size_stats(struct blkio_group *blkg) +{ + blkiocg_update_avg_queue_size_stats(blkg); +} + +static inline void +cfq_blkiocg_update_set_idle_time_stats(struct blkio_group *blkg) +{ + blkiocg_update_set_idle_time_stats(blkg); +} + +static inline void cfq_blkiocg_update_dispatch_stats(struct blkio_group *blkg, + uint64_t bytes, bool direction, bool sync) +{ + blkiocg_update_dispatch_stats(blkg, bytes, direction, sync); +} + +static inline void cfq_blkiocg_update_completion_stats(struct blkio_group *blkg, + uint64_t start_time, uint64_t io_start_time, bool direction, bool sync) +{ + blkiocg_update_completion_stats(blkg, start_time, io_start_time, + direction, sync); +} + +static inline void cfq_blkiocg_add_blkio_group(struct blkio_cgroup *blkcg, + struct blkio_group *blkg, void *key, dev_t dev) { + blkiocg_add_blkio_group(blkcg, blkg, key, dev); +} + +static inline int cfq_blkiocg_del_blkio_group(struct blkio_group *blkg) +{ + return blkiocg_del_blkio_group(blkg); +} + +#else /* CFQ_GROUP_IOSCHED */ +static inline void cfq_blkiocg_update_io_add_stats(struct blkio_group *blkg, + struct blkio_group *curr_blkg, bool direction, bool sync) {} + +static inline void cfq_blkiocg_update_dequeue_stats(struct blkio_group *blkg, + unsigned long dequeue) {} + +static inline void cfq_blkiocg_update_timeslice_used(struct blkio_group *blkg, + unsigned long time) {} +static inline void cfq_blkiocg_set_start_empty_time(struct blkio_group *blkg) {} +static inline void cfq_blkiocg_update_io_remove_stats(struct blkio_group *blkg, + bool direction, bool sync) {} +static inline void cfq_blkiocg_update_io_merged_stats(struct blkio_group *blkg, + bool direction, bool sync) {} +static inline void cfq_blkiocg_update_idle_time_stats(struct blkio_group *blkg) +{ +} +static inline void +cfq_blkiocg_update_avg_queue_size_stats(struct blkio_group *blkg) {} + +static inline void +cfq_blkiocg_update_set_idle_time_stats(struct blkio_group *blkg) {} + +static inline void cfq_blkiocg_update_dispatch_stats(struct blkio_group *blkg, + uint64_t bytes, bool direction, bool sync) {} +static inline void cfq_blkiocg_update_completion_stats(struct blkio_group *blkg, uint64_t start_time, uint64_t io_start_time, bool direction, bool sync) {} + +static inline void cfq_blkiocg_add_blkio_group(struct blkio_cgroup *blkcg, + struct blkio_group *blkg, void *key, dev_t dev) {} +static inline int cfq_blkiocg_del_blkio_group(struct blkio_group *blkg) +{ + return 0; +} + +#endif /* CFQ_GROUP_IOSCHED */ +#endif -- 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/