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d79c9e9d4b
linux-next/drivers/scsi
History
James Smart d79c9e9d4b scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. 
Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI
to contain the exchanges Scatter/Gather List. This caps the number of SGL
elements that can be in the SGL. There are not extensions to extend the
list out of the 2 pages.

The G7 hardware adds a SGE type that allows the SGL to be vectored to a
different scatter/gather list segment. And that segment can contain a SGE
to go to another segment and so on.  The initial segment must still be
pre-registered for the XRI, but it can be a much smaller amount (256Bytes)
as it can now be dynamically grown.  This much smaller allocation can
handle the SG list for most normal I/O, and the dynamic aspect allows it to
support many MB's if needed.

The implementation creates a pool which contains "segments" and which is
initially sized to hold the initial small segment per xri. If an I/O
requires additional segments, they are allocated from the pool.  If the
pool has no more segments, the pool is grown based on what is now
needed. After the I/O completes, the additional segments are returned to
the pool for use by other I/Os. Once allocated, the additional segments are
not released under the assumption of "if needed once, it will be needed
again". Pools are kept on a per-hardware queue basis, which is typically
1:1 per cpu, but may be shared by multiple cpus.

The switch to the smaller initial allocation significantly reduces the
memory footprint of the driver (which only grows if large ios are
issued). Based on the several K of XRIs for the adapter, the 8KB->256B
reduction can conserve 32MBs or more.

It has been observed with per-cpu resource pools that allocating a resource
on CPU A, may be put back on CPU B. While the get routines are distributed
evenly, only a limited subset of CPUs may be handling the put routines.
This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because
all the resources are being put on a limited subset of CPUs.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-19 22:41:12 -04:00
..
aacraid treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18 2019-05-21 11:28:46 +02:00
aic7xxx SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
aic94xx scsi: aic94xx: Remove unnecessary null check 2019-07-30 12:12:59 -04:00
arcmsr treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
arm scsi: fas216: Mark expected switch fall-throughs 2019-08-12 21:54:03 -04:00
be2iscsi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 338 2019-06-05 17:37:07 +02:00
bfa treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 292 2019-06-05 17:36:38 +02:00
bnx2fc SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
bnx2i treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
csiostor scsi: csiostor: Prefer pcie_capability_read_word() 2019-08-12 22:03:42 -04:00
cxgbi SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
cxlflash scsi: cxlflash: Mark expected switch fall-throughs 2019-07-30 15:58:28 -04:00
device_handler SCSI fixes on 20190601 2019-06-02 09:26:34 -07:00
dpt treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
esas2r scsi: esas2r: Prefer pcie_capability_read_word() 2019-08-12 22:04:06 -04:00
fcoe treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
fnic scsi: fnic: remove redundant assignment of variable rc 2019-08-19 21:51:00 -04:00
hisi_sas scsi: hisi_sas: Consolidate internal abort calls in LU reset operation 2019-08-07 22:13:16 -04:00
ibmvscsi scsi: ibmvfc: Mark expected switch fall-throughs 2019-08-07 21:30:50 -04:00
ibmvscsi_tgt scsi: ibmvscsi_tgt: Mark expected switch fall-throughs 2019-07-30 15:59:53 -04:00
isci scsi: libsas: aic94xx: hisi_sas: mvsas: pm8001: Use dev_is_expander() 2019-06-20 15:37:02 -04:00
libfc SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
libsas SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
lpfc scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware. 2019-08-19 22:41:12 -04:00
megaraid scsi: megaraid_sas: Introduce module parameter for default queue depth 2019-08-12 21:40:37 -04:00
mpt3sas scsi: mpt3sas: Update driver version to 31.100.00.00 2019-08-07 22:47:12 -04:00
mvsas SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
pcmcia SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
pm8001 scsi: pm80xx: remove redundant assignments to variable rc 2019-08-07 22:16:17 -04:00
qedf Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-17 20:20:36 -07:00
qedi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-27 21:06:39 -07:00
qla2xxx scsi: qla2xxx: cleanup trace buffer initialization 2019-08-19 21:51:00 -04:00
qla4xxx treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
smartpqi scsi: smartpqi: unlock on error in pqi_submit_raid_request_synchronous() 2019-06-04 22:22:29 -04:00
snic scsi: snic: no need to check return value of debugfs_create functions 2019-01-29 00:40:54 -05:00
sym53c8xx_2 scsi: sym53c8xx_2: remove redundant assignment to retv 2019-08-12 21:58:07 -04:00
ufs scsi: ufs-qcom: Make structure ufs_hba_qcom_vops constant 2019-08-19 22:17:54 -04:00
.gitignore
3w-9xxx.c scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent() 2019-02-25 21:37:25 -05:00
3w-9xxx.h
3w-sas.c SCSI fixes on 20190302 2019-03-02 11:39:54 -08:00
3w-sas.h
3w-xxxx.c scsi: 3w-xxxx: fix indentation issue, add missing tab 2018-12-19 21:54:07 -05:00
3w-xxxx.h scsi: 3w-xxx: fully convert to the generic DMA API 2018-10-17 21:58:51 -04:00
53c700_d.h_shipped
53c700.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
53c700.h
53c700.scr
a100u2w.c cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
a100u2w.h
a2091.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
a2091.h
a3000.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
a3000.h
a4000t.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
advansys.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
aha152x.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
aha152x.h
aha1542.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
aha1542.h
aha1740.c scsi: flip the default on use_clustering 2018-12-18 23:13:12 -05:00
aha1740.h
am53c974.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
atari_scsi.c nvram: Replace nvram_* function exports with static functions 2019-01-22 10:21:43 +01:00
atp870u.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
atp870u.h
BusLogic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 388 2019-06-05 17:37:11 +02:00
BusLogic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 388 2019-06-05 17:37:11 +02:00
bvme6000_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ch.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
constants.c
dc395x.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
dc395x.h
dmx3191d.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
dpt_i2o.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dpti.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
esp_scsi.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
esp_scsi.h scsi: esp: use sg helper to iterate over scatterlist 2019-06-20 15:21:33 -04:00
fdomain_isa.c scsi: fdomain_isa: use CFG1_IRQ_MASK 2019-07-30 12:18:24 -04:00
fdomain_pci.c scsi: fdomain: Resurrect driver - PCI support 2019-06-18 19:46:18 -04:00
fdomain.c scsi: fdomain: use BSTAT_{MSG|CMD|IO} in fdomain_work() 2019-07-30 12:17:28 -04:00
fdomain.h scsi: fdomain: Add register definitions 2019-06-18 19:46:22 -04:00
FlashPoint.c
g_NCR5380.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
gdth_ioctl.h scsi: gdth: remove dead code under #ifdef GDTH_IOCTL_PROC 2019-01-08 21:58:35 -05:00
gdth_proc.c scsi: gdth: use generic DMA API 2019-01-08 21:58:35 -05:00
gdth_proc.h scsi: gdth: remove gdth_{alloc,free}_ioctl 2019-01-08 21:57:42 -05:00
gdth.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 148 2019-05-30 11:25:18 -07:00
gdth.h scsi: gdth: remove ISA and EISA support 2019-01-08 21:58:35 -05:00
gvp11.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
gvp11.h
hosts.c SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
hpsa_cmd.h SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
hpsa.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
hpsa.h scsi: hpsa: correct device resets 2019-06-18 19:46:18 -04:00
hptiop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
hptiop.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
imm.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
imm.h
initio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 18 2019-05-21 11:28:46 +02:00
initio.h
ipr.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
ipr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ips.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
ips.h scsi: ips: properly handle 64-bit DMA 2018-11-06 21:31:28 -05:00
iscsi_boot_sysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
iscsi_tcp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
iscsi_tcp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
jazz_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
Kconfig SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
lasi700.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
libiscsi_tcp.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
libiscsi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mac53c94.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mac53c94.h
mac_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mac_scsi.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
Makefile scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver 2019-07-17 22:39:27 +09:00
megaraid.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
megaraid.h
mesh.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mesh.h
mvme16x_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mvme147.c scsi: flip the default on use_clustering 2018-12-18 23:13:12 -05:00
mvme147.h
mvumi.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
mvumi.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
myrb.c SCSI misc on 20181224 2018-12-28 14:48:06 -08:00
myrb.h scsi: myrb: Add Mylex RAID controller (block interface) 2018-10-17 21:06:49 -04:00
myrs.c scsi: myrs: Fix uninitialized variable 2019-05-20 10:56:43 -04:00
myrs.h scsi: myrs: Add Mylex RAID controller (SCSI interface) 2018-10-17 21:07:54 -04:00
ncr53c8xx.c scsi: ncr53c8xx: Mark expected switch fall-through 2019-08-07 21:53:23 -04:00
ncr53c8xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
NCR5380.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
NCR5380.h Revert "scsi: ncr5380: Increase register polling limit" 2019-06-20 15:37:02 -04:00
nsp32_debug.c
nsp32_io.h
nsp32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
nsp32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
pmcraid.c scsi: pmcraid: Fix a typo - pcmraid --> pmcraid 2019-08-12 21:57:13 -04:00
pmcraid.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ppa.c scsi: ppa: use sg helper to iterate over scatterlist 2019-06-20 15:21:33 -04:00
ppa.h
ps3rom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 164 2019-05-30 11:26:38 -07:00
qla1280.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
qla1280.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
qlogicfas408.c scsi: qlogicfas408: clean up a couple of indentation issues 2019-03-19 17:11:37 -04:00
qlogicfas408.h
qlogicfas.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
qlogicpti.c scsi: qlogicpti: Mark expected switch fall-throughs 2019-08-07 21:32:53 -04:00
qlogicpti.h scsi: qlogicpti: Use of_node_name_eq for node name comparisons 2019-02-13 22:07:03 -05:00
raid_class.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437 2019-06-05 17:37:17 +02:00
script_asm.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
scsi_common.c
scsi_debug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45 2019-05-24 17:27:12 +02:00
scsi_debugfs.c scsi: scsi_debugfs: Use for_each_set_bit to simplify code 2019-07-30 12:42:55 -04:00
scsi_debugfs.h scsi: core: add SPDX tags to scsi midlayer files missing licensing information 2019-05-21 06:16:21 -04:00
scsi_devinfo.c scsi: devinfo: BLIST_TRY_VPD_PAGES for SanDisk Cruzer Blade 2019-07-11 20:39:22 -04:00
scsi_dh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_error.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi_ioctl.c scsi: core: add SPDX tags to scsi midlayer files missing licensing information 2019-05-21 06:16:21 -04:00
scsi_lib_dma.c
scsi_lib.c scsi: core: Complain if scsi_target_block() fails 2019-08-07 21:45:10 -04:00
scsi_logging.c scsi: core: Reduce memory required for SCSI logging 2019-08-07 21:47:29 -04:00
scsi_logging.h
scsi_netlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_pm.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi_priv.h scsi: sd: Rely on the driver core for asynchronous probing 2019-06-18 19:46:17 -04:00
scsi_proc.c bus_find_device: Unify the match callback with class_find_device 2019-06-24 05:22:31 +02:00
scsi_sas_internal.h
scsi_scan.c scsi: core: map PQ=1, PDT=other values to SCSI_SCAN_TARGET_PRESENT 2019-04-15 22:25:00 -04:00
scsi_sysctl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 2019-05-30 11:29:53 -07:00
scsi_sysfs.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi_trace.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
scsi_transport_api.h
scsi_transport_fc.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi_transport_iscsi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_transport_sas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 2019-05-30 11:29:53 -07:00
scsi_transport_spi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_transport_srp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502 2019-06-19 17:09:56 +02:00
scsi.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi.h
scsicam.c
sd_dif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 410 2019-06-05 17:37:14 +02:00
sd_zbc.c SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
sd.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sd.h block: Kill gfp_t argument of blkdev_report_zones() 2019-07-11 20:04:37 -06:00
sense_codes.h
ses.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sg.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45 2019-05-24 17:27:12 +02:00
sgiwd93.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
sim710.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sni_53c710.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sr_ioctl.c
sr_vendor.c
sr.c scsi: sr: add a SPDX tag to sr.c 2019-05-21 06:16:23 -04:00
sr.h
st_options.h
st.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
st.h
stex.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
storvsc_drv.c SCSI fixes on 20190720 2019-07-20 10:04:58 -07:00
sun3_scsi_vme.c
sun3_scsi.c scsi: sun3_scsi: Mark expected switch fall-throughs 2019-08-07 21:33:51 -04:00
sun3x_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
sun_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
virtio_scsi.c scsi: virtio_scsi: implement request batching 2019-07-22 16:44:07 -04:00
vmw_pvscsi.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
vmw_pvscsi.h
wd33c93.c scsi: wd33c93: Mark expected switch fall-through 2019-08-07 21:35:59 -04:00
wd33c93.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
wd719x.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
wd719x.h scsi: wd719x: use per-command private data 2018-11-15 14:27:08 -05:00
xen-scsifront.c scsi: xen-scsifront: remove DISABLE_CLUSTERING 2018-12-18 23:13:12 -05:00
zalon.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
zorro7xx.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
zorro_esp.c scsi: esp_scsi: De-duplicate PIO routines 2018-10-17 21:38:20 -04:00