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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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