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3751416eeb
android_kernel_samsung_sm8650/drivers/scsi
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Uladzislau Rezki 3751416eeb UPSTREAM: scsi/scsi_error: Use call_rcu_hurry() instead of call_rcu() 
Earlier commits in this series allow battery-powered systems to build
their kernels with the default-disabled CONFIG_RCU_LAZY=y Kconfig option.
This Kconfig option causes call_rcu() to delay its callbacks in order
to batch them.  This means that a given RCU grace period covers more
callbacks, thus reducing the number of grace periods, in turn reducing
the amount of energy consumed, which increases battery lifetime which
can be a very good thing.  This is not a subtle effect: In some important
use cases, the battery lifetime is increased by more than 10%.

This CONFIG_RCU_LAZY=y option is available only for CPUs that offload
callbacks, for example, CPUs mentioned in the rcu_nocbs kernel boot
parameter passed to kernels built with CONFIG_RCU_NOCB_CPU=y.

Delaying callbacks is normally not a problem because most callbacks do
nothing but free memory.  If the system is short on memory, a shrinker
will kick all currently queued lazy callbacks out of their laziness,
thus freeing their memory in short order.  Similarly, the rcu_barrier()
function, which blocks until all currently queued callbacks are invoked,
will also kick lazy callbacks, thus enabling rcu_barrier() to complete
in a timely manner.

However, there are some cases where laziness is not a good option.
For example, synchronize_rcu() invokes call_rcu(), and blocks until
the newly queued callback is invoked.  It would not be a good for
synchronize_rcu() to block for ten seconds, even on an idle system.
Therefore, synchronize_rcu() invokes call_rcu_hurry() instead of
call_rcu().  The arrival of a non-lazy call_rcu_hurry() callback on a
given CPU kicks any lazy callbacks that might be already queued on that
CPU.  After all, if there is going to be a grace period, all callbacks
might as well get full benefit from it.

Yes, this could be done the other way around by creating a
call_rcu_lazy(), but earlier experience with this approach and
feedback at the 2022 Linux Plumbers Conference shifted the approach
to call_rcu() being lazy with call_rcu_hurry() for the few places
where laziness is inappropriate.

And another call_rcu() instance that cannot be lazy is the one in the
scsi_eh_scmd_add() function.  Leaving this instance lazy results in
unacceptably slow boot times.

Therefore, make scsi_eh_scmd_add() use call_rcu_hurry() in order to
revert to the old behavior.

[ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ]

Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Uladzislau Rezki <urezki@gmail.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: <linux-scsi@vger.kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
(cherry picked from commit 54d87b0a0c19bc3f740e4cd4b87ba14ce2e4ea73)

Bug: 258241771
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4909036
Reviewed-by: Vineeth Pillai <vineethrp@google.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: I95bba865e582b0a12b1c09ba1f0bd4f897401c07
2024-01-19 00:10:44 +00:00
..
aacraid scsi: core: Improve type safety of scsi_rescan_device() 2023-10-10 22:00:35 +02:00
aic7xxx scsi: aic79xx: Use __ro_after_init explicitly 2022-09-15 22:01:24 -04:00
aic94xx scsi: aic94xx: Add missing check for dma_map_single() 2023-03-10 09:33:20 +01:00
arcmsr
arm scsi: arm: Move the SCSI pointer to private command data 2022-02-22 21:11:03 -05:00
be2iscsi scsi: be2iscsi: Add length check when parsing nlattrs 2023-09-13 09:42:52 +02:00
bfa scsi: bfa: Remove unneeded flush_workqueue() 2022-04-25 23:38:38 -04:00
bnx2fc scsi: bnx2fc: Avoid using get_cpu() in bnx2fc_cmd_alloc() 2022-05-16 21:26:50 -04:00
bnx2i scsi: iscsi: Fix session removal on shutdown 2022-06-21 21:14:54 -04:00
csiostor scsi: csiostor: Convert sysfs snprintf() to sysfs_emit() 2022-09-15 22:35:21 -04:00
cxgbi treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
cxlflash UPSTREAM: mm: replace vma->vm_flags direct modifications with modifier calls 2023-06-07 14:24:57 +00:00
device_handler Merge 6.1.22 into android14-6.1 2023-03-31 08:15:39 +00:00
elx scsi: elx: libefc: Fix second parameter type in state callbacks 2022-12-31 13:33:05 +01:00
esas2r scsi: esas2r: Use flex array destination for memcpy() 2022-09-06 22:24:37 -04:00
fcoe scsi: fcoe: Fix potential deadlock on &fip->ctlr_lock 2023-09-13 09:42:56 +02:00
fnic scsi: fnic: Replace return codes in fnic_clean_pending_aborts() 2023-08-16 18:27:30 +02:00
hisi_sas scsi: hisi_sas: Fix normally completed I/O analysed as failed 2023-09-13 09:42:50 +02:00
ibmvscsi scsi: ibmvfc: Avoid path failures during live migration 2022-11-07 18:57:39 +00:00
ibmvscsi_tgt scsi: ibmvscsi_tgt: Fix repeated words in comment 2022-09-15 22:30:26 -04:00
isci scsi: isci: Fix typo in comment 2022-05-23 23:24:10 -04:00
libfc scsi: libfc: Remove get_cpu() semantics in fc_exch_em_alloc() 2022-05-16 21:26:50 -04:00
libsas scsi: libsas: Grab the ATA port lock in sas_ata_device_link_abort() 2023-05-11 23:03:42 +09:00
lpfc scsi: lpfc: Fix the NULL vs IS_ERR() bug for debugfs_create_file() 2023-09-23 11:11:09 +02:00
megaraid Merge 6.1.55 into android14-6.1-lts 2023-10-26 18:58:32 +00:00
mpi3mr scsi: mpi3mr: Propagate sense data for admin queue SCSI I/O 2023-07-23 13:49:35 +02:00
mpt3sas scsi: mpt3sas: Perform additional retries if doorbell read returns 0 2023-09-13 09:43:01 +02:00
mvsas scsi: mvsas: Add PCI ID of RocketRaid 2640 2022-04-06 22:27:08 -04:00
pcmcia scsi: sym53c500_cs: Stop using struct scsi_pointer 2022-04-06 22:11:52 -04:00
pm8001 scsi: pm80xx: Avoid leaking tags when processing OPC_INB_SET_CONTROLLER_CONFIG command 2023-10-06 14:56:54 +02:00
qedf scsi: qedf: Add synchronization between I/O completions and abort 2023-10-06 14:56:52 +02:00
qedi scsi: qedi: Fix potential deadlock on &qedi_percpu->p_work_lock 2023-09-13 09:42:24 +02:00
qla2xxx scsi: qla2xxx: Fix NULL pointer dereference in target mode 2023-10-06 14:56:59 +02:00
qla4xxx This is the 6.1.53 stable release 2023-09-18 09:57:37 +00:00
smartpqi scsi: core: Improve type safety of scsi_rescan_device() 2023-10-10 22:00:35 +02:00
snic scsi: snic: Fix double free in snic_tgt_create() 2023-08-30 16:11:12 +02:00
sym53c8xx_2 scsi: sym53c8xx_2: Remove redundant "with" 2022-06-21 21:41:19 -04:00
.gitignore
3w-9xxx.c scsi: 3w-9xxx: Avoid disabling device if failing to enable it 2022-09-06 22:22:24 -04:00
3w-9xxx.h
3w-sas.c scsi: 3w-sas: Remove useless DMA-32 fallback configuration 2022-01-24 23:30:28 -05:00
3w-sas.h
3w-xxxx.c scsi: 3w-xxxx: Add error handling for initialization failure in tw_probe() 2023-07-19 16:21:35 +02:00
3w-xxxx.h scsi: 3w-xxxx: Replace one-element array with flexible-array member 2022-09-25 13:06:00 -04:00
53c700_d.h_shipped
53c700.c scsi: 53c700: Check that command slot is not NULL 2023-08-16 18:27:30 +02:00
53c700.h
53c700.scr
a100u2w.c scsi: a100u2w: Fix a kernel-doc warning 2021-11-29 23:02:13 -05:00
a100u2w.h
a2091.c scsi: a2091: Convert m68k WD33C93 drivers to DMA API 2022-07-07 17:01:22 -04:00
a2091.h
a3000.c scsi: a3000: Convert m68k WD33C93 drivers to DMA API 2022-07-07 17:01:22 -04:00
a3000.h
a4000t.c
advansys.c scsi: advansys: Move the SCSI pointer to private command data 2022-02-22 21:11:03 -05:00
aha152x.c scsi: aha152x: Stop using struct scsi_pointer 2022-03-29 23:42:18 -04:00
aha152x.h
aha1542.c scsi: aha1542: Remove unneeded semicolon 2022-04-25 23:25:11 -04:00
aha1542.h
aha1740.c scsi: Remove drivers/scsi/scsi.h 2022-02-22 21:11:02 -05:00
aha1740.h
am53c974.c
atari_scsi.c scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
atp870u.c scsi: atp870u: Fix a kernel-doc warning 2021-11-29 23:02:13 -05:00
atp870u.h
BusLogic.c scsi: BusLogic: Remove bus_to_virt() 2022-06-27 22:52:05 -04:00
BusLogic.h
bvme6000_scsi.c
ch.c UPSTREAM: scsi: ch: Convert to scsi_execute_cmd() 2023-03-15 16:17:14 +00:00
constants.c
dc395x.c scsi: dc395x: Fix a missing check on list iterator 2022-04-26 08:51:56 -04:00
dc395x.h
dmx3191d.c scsi: NCR5380: Remove the NCR5380_CMD_SIZE macro 2022-02-22 21:11:03 -05:00
esp_scsi.c scsi: esp_scsi: Stop using the SCSI pointer 2022-02-22 21:11:04 -05:00
esp_scsi.h scsi: esp_scsi: Stop using the SCSI pointer 2022-02-22 21:11:04 -05:00
fdomain_isa.c
fdomain_pci.c
fdomain.c scsi: fdomain: Move the SCSI pointer to private command data 2022-02-22 21:11:04 -05:00
fdomain.h
FlashPoint.c scsi: FlashPoint: Remove redundant variable bm_int_st 2022-08-01 19:52:03 -04:00
g_NCR5380.c scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
gvp11.c scsi: gvp11.c: Fix DMA mask calculation error 2022-07-13 23:18:26 -04:00
gvp11.h
hosts.c Revert "scsi: core: Use 32-bit hostnum in scsi_host_lookup()" 2023-10-12 14:11:25 +00:00
hpsa_cmd.h
hpsa.c scsi: hpsa: Fix allocation size for scsi_host_alloc() 2023-02-01 08:34:36 +01:00
hpsa.h
hptiop.c scsi: hptiop: Use struct_size() helper in code related to struct hpt_iop_request_scsi_command 2022-09-25 13:02:23 -04:00
hptiop.h scsi: hptiop: Replace one-element array with flexible-array member in struct hpt_iop_request_ioctl_command() 2022-09-25 13:04:17 -04:00
imm.c scsi: imm: Move the SCSI pointer to private command data 2022-02-22 21:11:04 -05:00
imm.h scsi: imm: Move the SCSI pointer to private command data 2022-02-22 21:11:04 -05:00
initio.c scsi: initio: Remove redundant assignment to pointer scb 2022-08-31 23:39:57 -04:00
initio.h scsi: initio: Stop using the SCSI pointer 2022-02-22 21:11:05 -05:00
ipr.c scsi: ipr: Work around fortify-string warning 2023-03-11 13:55:29 +01:00
ipr.h
ips.c scsi: Remove drivers/scsi/scsi.h 2022-02-22 21:11:02 -05:00
ips.h
iscsi_boot_sysfs.c
iscsi_tcp.c scsi: iscsi_tcp: restrict to TCP sockets 2023-10-06 14:56:38 +02:00
iscsi_tcp.h scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername() 2022-09-25 14:27:47 -04:00
jazz_esp.c
Kconfig scsi: core: Make SCSI_MOD depend on BLOCK for cleaner .config files 2022-09-25 12:46:59 -04:00
lasi700.c
libiscsi_tcp.c scsi: iscsi: Remove iscsi_get_task back_lock requirement 2022-06-21 21:19:23 -04:00
libiscsi.c FROMGIT: scsi: core: Change the return type of .eh_timed_out() 2023-03-15 16:17:14 +00:00
mac53c94.c scsi: mac53c94: Fix warning comparing pointer to 0 2022-04-25 23:23:05 -04:00
mac53c94.h scsi: mac53c94: Stop using struct scsi_pointer 2022-02-27 21:35:30 -05:00
mac_esp.c
mac_scsi.c scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
Makefile scsi: dpt_i2o: Remove obsolete driver 2022-06-27 22:56:21 -04:00
megaraid.c scsi: megaraid: Fix mega_cmd_done() CMDID_INT_CMDS 2023-05-11 23:03:19 +09:00
megaraid.h scsi: megaraid: Stop using the SCSI pointer 2022-02-22 21:11:05 -05:00
mesh.c powerpc/powermac: Remove empty function note_scsi_host() 2022-06-26 10:29:44 +10:00
mesh.h scsi: mesh: Stop using struct scsi_pointer 2022-02-27 21:34:02 -05:00
mvme16x_scsi.c
mvme147.c scsi: wd33c93: Move the SCSI pointer to private command data 2022-02-22 21:11:07 -05:00
mvme147.h
mvumi.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
mvumi.h scsi: mvumi: Stop using the SCSI pointer 2022-02-22 21:11:06 -05:00
myrb.c scsi: myrb: Fix up null pointer access on myrb_cleanup() 2022-05-23 23:24:10 -04:00
myrb.h
myrs.c scsi: myrs: Fix crash in error case 2022-01-25 00:09:41 -05:00
myrs.h
ncr53c8xx.c scsi: zalon: Stop using the SCSI pointer 2022-02-22 21:11:07 -05:00
ncr53c8xx.h scsi: zalon: Stop using the SCSI pointer 2022-02-22 21:11:07 -05:00
NCR5380.c scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
NCR5380.h scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
nsp32_debug.c
nsp32_io.h
nsp32.c scsi: nsp32: Stop using the SCSI pointer 2022-02-22 21:11:06 -05:00
nsp32.h scsi: nsp32: Stop using the SCSI pointer 2022-02-22 21:11:06 -05:00
pmcraid.c scsi: pmcraid: Fix missing resource cleanup in error case 2022-06-07 22:05:14 -04:00
pmcraid.h scsi: pmcraid: Remove the PMCRAID_PASSTHROUGH_IOCTL ioctl implementation 2022-03-29 23:32:26 -04:00
ppa.c scsi: ppa: Move the SCSI pointer to private command data 2022-02-22 21:11:06 -05:00
ppa.h
ps3rom.c
qla1280.c scsi: qla1280: Remove redundant variable 2022-05-19 20:26:21 -04:00
qla1280.h scsi: qla1280: Move the SCSI pointer to private command data 2022-02-22 21:11:06 -05:00
qlogicfas408.c scsi: Remove drivers/scsi/scsi.h 2022-02-22 21:11:02 -05:00
qlogicfas408.h
qlogicfas.c scsi: Remove drivers/scsi/scsi.h 2022-02-22 21:11:02 -05:00
qlogicpti.c scsi: qlogicpti: Fix dma_map_sg() check 2022-09-06 22:14:14 -04:00
qlogicpti.h
raid_class.c scsi: core: raid_class: Remove raid_component_add() 2023-08-30 16:11:12 +02:00
script_asm.pl
scsi_bsg.c scsi: bsg: Drop needless assignment in scsi_bsg_sg_io_fn() 2022-03-15 14:05:02 -04:00
scsi_common.c
scsi_debug.c scsi: scsi_debug: Fix possible name leak in sdebug_add_host_helper() 2022-12-31 13:32:35 +01:00
scsi_debugfs.c scsi: core: Remove struct scsi_request 2022-03-01 22:21:50 -05:00
scsi_debugfs.h
scsi_devinfo.c Revert "Revert "scsi: core: Add BLIST_NO_VPD_SIZE for some VDASD"" 2023-03-30 12:23:03 +01:00
scsi_dh.c
scsi_error.c UPSTREAM: scsi/scsi_error: Use call_rcu_hurry() instead of call_rcu() 2024-01-19 00:10:44 +00:00
scsi_ioctl.c UPSTREAM: scsi: core: Convert to scsi_execute_cmd() 2023-03-15 16:17:14 +00:00
scsi_lib_dma.c
scsi_lib.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
scsi_logging.c scsi: core: scsi_logging: Fix a BUG 2022-03-29 23:29:19 -04:00
scsi_logging.h
scsi_netlink.c
scsi_pm.c scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume() 2021-12-22 23:38:29 -05:00
scsi_priv.h scsi: core: Improve type safety of scsi_rescan_device() 2023-10-10 22:00:35 +02:00
scsi_proc.c scsi: core: Fix legacy /proc parsing buffer overflow 2023-08-16 18:27:30 +02:00
scsi_sas_internal.h
scsi_scan.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
scsi_sysctl.c
scsi_sysfs.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
scsi_trace.c
scsi_transport_api.h
scsi_transport_fc.c FROMGIT: scsi: core: Change the return type of .eh_timed_out() 2023-03-15 16:17:14 +00:00
scsi_transport_iscsi.c scsi: iscsi: Add strlen() check in iscsi_if_set{_host}_param() 2023-09-13 09:42:51 +02:00
scsi_transport_sas.c scsi: scsi_transport_sas: Fix error handling in sas_phy_add() 2022-11-08 01:52:52 +00:00
scsi_transport_spi.c UPSTREAM: scsi: spi: Convert to scsi_execute_cmd() 2023-03-15 16:17:14 +00:00
scsi_transport_srp.c FROMGIT: scsi: core: Change the return type of .eh_timed_out() 2023-03-15 16:17:14 +00:00
scsi.c Merge 55fba69fbf ("rust: kernel: Mark rust_fmt_argument as extern "C"") into android14-6.1 2023-05-09 03:32:41 +00:00
scsicam.c scsicam: Fix use of page cache 2022-05-08 14:28:18 -04:00
sd_dif.c scsi: sd: Reorganize DIF/DIX code to avoid calling revalidate twice 2022-05-02 16:59:11 -04:00
sd_zbc.c Merge 6.1.20 into android14-6.1 2023-03-23 08:23:43 +00:00
sd.c Revert "ata,scsi: do not issue START STOP UNIT on resume" 2023-11-02 07:06:05 +00:00
sd.h Revert "scsi: sd: Do not issue commands to suspended disks on shutdown" 2023-11-02 07:06:05 +00:00
sense_codes.h
ses.c This is the 6.1.25 stable release 2023-04-26 13:13:19 +00:00
sg.c UPSTREAM: mm: replace vma->vm_flags direct modifications with modifier calls 2023-06-07 14:24:57 +00:00
sgiwd93.c scsi: wd33c93: Move the SCSI pointer to private command data 2022-02-22 21:11:07 -05:00
sim710.c
sni_53c710.c
sr_ioctl.c UPSTREAM: scsi: sr: Convert to scsi_execute_cmd() 2023-03-15 16:17:14 +00:00
sr_vendor.c scsi: sr: Don't use GFP_DMA 2021-12-22 23:41:13 -05:00
sr.c UPSTREAM: scsi: sr: Convert to scsi_execute_cmd() 2023-03-15 16:17:14 +00:00
sr.h sr: implement ->free_disk to simplify refcounting 2022-03-08 19:40:01 -07:00
st_options.h
st.c SCSI misc on 20221007 2022-10-07 12:33:18 -07:00
st.h scsi: don't use disk->private_data to find the scsi_driver 2022-03-08 19:40:00 -07:00
stex.c scsi: stex: Fix gcc 13 warnings 2023-06-09 10:34:21 +02:00
storvsc_drv.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
sun3_scsi_vme.c
sun3_scsi.c scsi: NCR5380: Add SCp members to struct NCR5380_cmd 2022-02-22 21:11:03 -05:00
sun3x_esp.c
sun_esp.c
virtio_scsi.c This is the 6.1.57 stable release 2023-11-02 07:05:54 +00:00
vmw_pvscsi.c scsi: vmw_pvscsi: No need to clear memory after a dma_alloc_coherent() call 2022-04-06 23:01:54 -04:00
vmw_pvscsi.h scsi: vmw_pvscsi: Expand vcpuHint to 16 bits 2022-06-07 21:30:56 -04:00
wd33c93.c scsi: wd33c93: Remove dead code related to the long-gone config WD33C93_PIO 2022-09-25 13:29:53 -04:00
wd33c93.h scsi: wd33c93: Remove dead code related to the long-gone config WD33C93_PIO 2022-09-25 13:29:53 -04:00
wd719x.c scsi: wd719x: Return proper error code when dma_set_mask() fails 2022-03-01 23:56:28 -05:00
wd719x.h scsi: wd719x: Stop using the SCSI pointer 2022-02-22 21:11:07 -05:00
xen-scsifront.c scsi: xen: Drop use of internal host codes 2022-09-06 22:05:58 -04:00
zalon.c scsi: zalon: Stop using the SCSI pointer 2022-02-22 21:11:07 -05:00
zorro7xx.c scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one() 2022-03-30 00:05:42 -04:00
zorro_esp.c