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Subject[PATCHSET] workqueue: update workqueue users - replace create_workqueue()
Date
Hello,

This patchset examines each user of create_workqueue() and update them
to better fit the new workqueue implementation. For backward
compatibility, create_workqueue() is mapped to

alloc_workqueue(@name, WQ_MEM_RECLAIM, 1)

but for a lot of its users, WQ_MEM_RECLAIM is not required,
@max_active of 1 is unnecessarily strict, or the dedicated workqueue
simply isn't needed.

* As the system workqueues can now host higher concurrency, a lot of
users can drop dedicated workqueues and use the system ones.

* There are cases where keeping dedicated workqueues are necessary.
e.g. They are depended upon during memory reclaim, need to be
highpri or CPU intensive, serve work items which free themselves
(and thus work items can't be explicitly queued), or need to limit
max concurrency level from workqueue. In these cases,
alloc_workqueue() calls with better fitting parameters are used.

* This patchset mostly concentrates on converting create_workqueue()
users but it also updates general workqueue usages when it makes
sense to update them together. Please read description of each
patch for deatils.

This simplifies code, removes unnecessary rescuer kernel thread and
makes workqueue utilized more efficiently.

This patchset contains the following 32 patches.

0001-arm-omap-use-system_wq-in-mailbox.patch
0002-powerpc-cell-use-system_wq-in-cpufreq_spudemand.patch
0003-block-make-kblockd_workqueue-smarter.patch
0004-bio-integrity-mark-kintegrityd_wq-highpri-and-CPU-in.patch
0005-crypto-mark-crypto-workqueues-CPU_INTENSIVE.patch
0006-acpi-kacpi-_wq-don-t-need-WQ_MEM_RECLAIM.patch
0007-cpufreq-use-system_wq-instead-of-dedicated-workqueue.patch
0008-drm-nouveau-use-system_wq-instead-of-dev_priv-wq.patch
0009-drm-radeon-use-system_wq-instead-of-dev_priv-wq.patch
0010-input-tps6507x-ts-use-system_wq-instead-of-dedicated.patch
0011-v4l-cx18-update-workqueue-usage.patch
0012-i2o-use-alloc_workqueue-instead-of-create_workqueue.patch
0013-misc-iwmc3200top-use-system_wq-instead-of-dedicated-.patch
0014-wireless-ipw2x00-use-system_wq-instead-of-dedicated-.patch
0015-wireless-libertas-_tf-use-system_wq-instead-of-dedic.patch
0016-scsi-be2iscsi-qla2xxx-convert-to-alloc_workqueue.patch
0017-scsi-ibmvstgt-use-system_wq-instead-of-vtgtd-workque.patch
0018-scsi-scsi_tgt_lib-scsi_tgtd-isn-t-used-in-memory-rec.patch
0019-usb-ueagle-atm-use-system_wq-instead-of-dedicated-wo.patch
0020-video-msm_fb-use-system_wq-instead-of-dedicated-work.patch
0021-fs-aio-aio_wq-isn-t-used-in-memory-reclaim-path.patch
0022-ceph-fsc-_wq-s-aren-t-used-in-memory-reclaim-path.patch
0023-net-ceph-make-ceph_msgr_wq-non-reentrant.patch
0024-dlm-dlm-workqueues-aren-t-used-in-memory-reclaim-pat.patch
0025-ext4-convert-to-alloc_workqueue.patch
0026-ocfs2-use-system_wq-instead-of-ocfs2_quota_wq.patch
0027-reiserfs-make-commit_wq-use-the-default-concurrency-.patch
0028-xfs-convert-to-alloc_workqueue.patch
0029-net-9p-use-system_wq-instead-of-p9_mux_wq.patch
0030-net-9p-replace-p9_poll_task-with-a-work.patch
0031-rds-ib-use-system_wq-instead-of-rds_ib_fmr_wq.patch
0032-rxrpc-rxrpc_workqueue-isn-t-used-during-memory-recla.patch

The patches are based on 2.6.37-rc8 (b518a649) and available in the
following git branch.

git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.g replace-create_workqueue

arch/arm/plat-omap/mailbox.c | 10 -
arch/powerpc/platforms/cell/cpufreq_spudemand.c | 20 --
block/blk-core.c | 4
crypto/crypto_wq.c | 3
crypto/pcrypt.c | 3
drivers/acpi/osl.c | 6
drivers/cpufreq/cpufreq_conservative.c | 22 --
drivers/cpufreq/cpufreq_ondemand.c | 20 --
drivers/gpu/drm/nouveau/nouveau_drv.h | 1
drivers/gpu/drm/nouveau/nouveau_irq.c | 9 -
drivers/gpu/drm/nouveau/nouveau_state.c | 19 +-
drivers/gpu/drm/nouveau/nv50_display.c | 4
drivers/gpu/drm/radeon/evergreen.c | 2
drivers/gpu/drm/radeon/r100.c | 2
drivers/gpu/drm/radeon/r600.c | 2
drivers/gpu/drm/radeon/radeon.h | 1
drivers/gpu/drm/radeon/radeon_device.c | 6
drivers/gpu/drm/radeon/radeon_irq_kms.c | 5
drivers/gpu/drm/radeon/radeon_pm.c | 47 +----
drivers/gpu/drm/radeon/rs600.c | 2
drivers/input/touchscreen/tps6507x-ts.c | 12 -
drivers/media/video/cx18/cx18-driver.c | 24 --
drivers/media/video/cx18/cx18-driver.h | 3
drivers/media/video/cx18/cx18-streams.h | 3
drivers/message/i2o/driver.c | 3
drivers/misc/iwmc3200top/iwmc3200top.h | 4
drivers/misc/iwmc3200top/main.c | 14 -
drivers/net/wireless/ipw2x00/ipw2100.c | 70 +++-----
drivers/net/wireless/ipw2x00/ipw2100.h | 1
drivers/net/wireless/ipw2x00/ipw2200.c | 196 ++++++++++--------------
drivers/net/wireless/ipw2x00/ipw2200.h | 2
drivers/net/wireless/libertas/if_sdio.c | 10 -
drivers/net/wireless/libertas_tf/cmd.c | 6
drivers/net/wireless/libertas_tf/libertas_tf.h | 2
drivers/net/wireless/libertas_tf/main.c | 16 -
drivers/scsi/be2iscsi/be_main.c | 2
drivers/scsi/ibmvscsi/ibmvstgt.c | 15 -
drivers/scsi/qla2xxx/qla_os.c | 2
drivers/scsi/scsi_tgt_lib.c | 2
drivers/usb/atm/ueagle-atm.c | 19 --
drivers/video/msm/msm_fb.c | 11 -
fs/aio.c | 4
fs/bio-integrity.c | 7
fs/ceph/super.c | 10 -
fs/dlm/lowcomms.c | 19 --
fs/ext4/super.c | 7
fs/ocfs2/quota.h | 3
fs/ocfs2/quota_global.c | 27 ---
fs/ocfs2/super.c | 7
fs/reiserfs/journal.c | 2
fs/xfs/linux-2.6/xfs_buf.c | 5
fs/xfs/xfs_mru_cache.c | 2
include/linux/ceph/messenger.h | 5
net/9p/trans_fd.c | 52 +-----
net/ceph/messenger.c | 46 -----
net/rds/ib.c | 9 -
net/rds/ib.h | 2
net/rds/ib_rdma.c | 27 ---
net/rxrpc/af_rxrpc.c | 2
59 files changed, 270 insertions(+), 571 deletions(-)
--
tejun


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