From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Greetings folks, Following the input of a number of folks over the past 8+ weeks, this series does the conversion of the first wave of libs and LLDs to use host_lock less mode. This patch is based upon jgarzik's full host_lock push down commit 3039f3ffcc5 and the atomic_t Scsi_Host->cmd_serial_number patch from commit bb5df6d08404 in lio-core-2.6.git. The first and second patches for libiscsi and libata do a conversion to host_lock less whilst using existing internal spin_lock_irqsave(); do_lld_work(); spin_unlock_irqrestore() LLD locks. The third patch adds a IRQ_DISABLE_SCSI_QCMD wrapper similar to DEF_SCSI_QCMD() that will disable interrupts using local_irq_save() before calling lld_queuecommand_irq_disable(). The forth -> tenth patches convert libsas, message/fusion, mpt2sas, fnic, lpfc, qla2xxx and qla4xxx to run in host_lock less w/ IRQ_DISABLE_SCSI_QCMD(). The final patch drops the usage of DEF_SCSI_QCMD() around scsi_debug, which is fully capable of processing I/O w/o hard interrupts disabled. This code will be pushed into lio-core-2.6.git/lock_less-LLDs-for-38 shortly, and will be respun as necessary based on LLD maintainer feedback and ACKs. Thank you! Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> Nicholas Bellinger (11): libiscsi: Convert to host_lock less w/ interrupts disabled internally libata: Convert to host_lock less w/ interrupts disabled internally scsi: Add IRQ_DISABLE_SCSI_QCMD wrapper libsas: Convert to host_lock less w/ interrupts disabled externally message: Convert to host_lock less w/ interrupts disabled externally mpt2sas: Convert to host_lock less w/ interrupts disabled externally fnic: Convert to host_lock less w/ interrupts disabled externally lpfc: Convert to host_lock less w/ interrupts disabled externally qla2xxx: Convert to host_lock less w/ interrupts disabled externally qla4xxx: Convert to host_lock less w/ interrupts disabled externally scsi_debug: Convert to host_lock less drivers/ata/libata-scsi.c | 14 ++++---------- drivers/message/fusion/mptsas.c | 4 ++-- drivers/message/fusion/mptscsih.c | 8 +++++--- drivers/message/fusion/mptspi.c | 4 ++-- drivers/scsi/fnic/fnic_scsi.c | 14 +++----------- drivers/scsi/libiscsi.c | 17 ++++++----------- drivers/scsi/libsas/sas_scsi_host.c | 11 +++-------- drivers/scsi/lpfc/lpfc_scsi.c | 9 ++++----- drivers/scsi/mpt2sas/mpt2sas_scsih.c | 6 +++--- drivers/scsi/qla2xxx/qla_os.c | 11 +++-------- drivers/scsi/qla4xxx/ql4_os.c | 10 +++------- drivers/scsi/scsi_debug.c | 4 +--- include/scsi/scsi_host.h | 15 +++++++++++++++ 13 files changed, 54 insertions(+), 73 deletions(-) -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
