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Neil Horman d576a5e80c bnx2fc: Improve stats update mechanism 
Recently had this warning reported:

[  290.489047] Call Trace:
[  290.489053]  [<ffffffff8169efec>] dump_stack+0x19/0x1b
[  290.489055]  [<ffffffff810ac7a9>] __might_sleep+0x179/0x230
[  290.489057]  [<ffffffff816a4ad5>] mutex_lock_nested+0x55/0x520
[  290.489061]  [<ffffffffa01b9905>] ? bnx2fc_l2_rcv_thread+0xc5/0x4c0 [bnx2fc]
[  290.489065]  [<ffffffffa0174c1a>] fc_vport_id_lookup+0x3a/0xa0 [libfc]
[  290.489068]  [<ffffffffa01b9a6c>] bnx2fc_l2_rcv_thread+0x22c/0x4c0 [bnx2fc]
[  290.489070]  [<ffffffffa01b9840>] ? bnx2fc_vport_destroy+0x110/0x110 [bnx2fc]
[  290.489073]  [<ffffffff8109e0cd>] kthread+0xed/0x100
[  290.489075]  [<ffffffff8109dfe0>] ? insert_kthread_work+0x80/0x80
[  290.489077]  [<ffffffff816b2fec>] ret_from_fork+0x7c/0xb0
[  290.489078]  [<ffffffff8109dfe0>] ? insert_kthread_work+0x80/0x80

Its due to the fact that we call a potentially sleeping function from the bnx2fc
rcv path with preemption disabled (via the get_cpu call embedded in the per-cpu
variable stats lookup in bnx2fc_l2_rcv_thread.

Easy enough fix, we can just move the stats collection later in the function
where we are sure we won't preempt or sleep.  This also allows us to not have to
enable pre-emption when doing a per-cpu lookup, since we're certain not to get
rescheduled.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by:  Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-25 13:29:31 +02:00
..
aacraid [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
aic7xxx SCSI for-linus on 20140609 2014-06-09 18:54:06 -07:00
aic94xx [SCSI] libsas: implement > 16 byte CDB support 2013-06-04 11:15:59 -07:00
arcmsr [SCSI] arcmsr: upper 32 of dma address lost 2014-03-15 10:19:19 -07:00
arm acornscsi: remove linked command support 2014-05-28 18:14:16 +02:00
be2iscsi be2iscsi: remove potential junk pointer free 2014-06-25 13:29:05 +02:00
bfa bfa: allocate memory with GFP_ATOMIC in spinlock context 2014-05-19 19:12:22 +02:00
bnx2fc bnx2fc: Improve stats update mechanism 2014-06-25 13:29:31 +02:00
bnx2i Merge branch 'sched/urgent' into sched/core, to avoid conflicts 2014-05-07 13:15:46 +02:00
csiostor Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
cxgbi [SCSI] cxgb4i: Use cxgb4_select_ntuple to correctly calculate ntuple fields 2014-03-15 10:19:18 -07:00
device_handler block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
dpt atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
esas2r esas2r: Fix comment 2014-05-19 19:12:23 +02:00
fcoe Merge branch 'sched/urgent' into sched/core, to avoid conflicts 2014-05-07 13:15:46 +02:00
fnic fnic: fnic Control Path Trace Utility 2014-05-19 13:33:00 +02:00
ibmvscsi sched, treewide: Replace hardcoded nice values with MIN_NICE/MAX_NICE 2014-04-18 12:07:24 +02:00
isci arch: Mass conversion of smp_mb__*() 2014-04-18 14:20:48 +02:00
libfc fcp: Do not interpret check condition as underrun 2013-09-04 13:52:35 -07:00
libsas SCSI misc on 20140401 2014-04-01 18:49:04 -07:00
lpfc SCSI for-linus on 20140613 2014-06-14 19:49:48 -05:00
megaraid megaraid_sas: fix a small problem when reading state value from hw 2014-05-19 13:30:59 +02:00
mpt2sas mpt2sas: Add free smids to the head, not tail of list 2014-05-28 18:13:24 +02:00
mpt3sas mpt3sas: Remove use of DEF_SCSI_QCMD 2014-05-28 18:13:22 +02:00
mvsas drivers: scsi: mvsas: fix compiling issue by adding 'MVS_' for "enum pci_interrupt_cause" 2014-06-20 08:22:39 +08:00
osd block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
pcmcia nsp_cs: switch to ->show_info() 2013-04-09 14:13:21 -04:00
pm8001 pm8001: Fix potential null pointer dereference and memory leak. 2014-06-25 13:29:05 +02:00
qla2xxx SCSI for-linus on 20140613 2014-06-14 19:49:48 -05:00
qla4xxx qla4xxx: Use kmemdup instead of kmalloc + memcpy 2014-05-28 18:13:19 +02:00
sym53c8xx_2 sym53c8xx_2: Set DID_REQUEUE return code when aborting squeue 2014-04-12 18:02:16 -07:00
ufs scsi: ufs: Improve UFS fatal error handling 2014-05-28 12:25:13 +02:00
.gitignore
3w-9xxx.c [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers 2013-11-29 08:48:39 +04:00
3w-9xxx.h
3w-sas.c [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers 2013-11-29 08:48:39 +04:00
3w-sas.h
3w-xxxx.c [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers 2013-11-29 08:48:39 +04:00
3w-xxxx.h
53c700.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
53c700.h
53c700.scr
53c700_d.h_shipped
a100u2w.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
a100u2w.h
a2091.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
a2091.h
a3000.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
a3000.h
a4000t.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
advansys.c [SCSI] advansys: Remove 'last_reset' references 2013-10-25 11:44:54 +01:00
aha152x.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
aha152x.h
aha1542.c treewide: Put a space between #include and FILE 2012-06-28 11:44:36 +02:00
aha1542.h
aha1740.c aha1740: switch to ->show_info() 2013-04-09 14:13:23 -04:00
aha1740.h
atari_NCR5380.c scsi/NCR5380: fix and standardize NDEBUG macros 2014-05-28 12:10:43 +02:00
atari_scsi.c SCSI for-linus on 20140609 2014-06-09 18:54:06 -07:00
atari_scsi.h scsi/NCR5380: remove unused macro definitions 2014-05-28 12:11:08 +02:00
atp870u.c SCSI: remove unnecessary pci_set_drvdata() 2013-10-14 15:26:04 +02:00
atp870u.h
BusLogic.c [SCSI] buslogic: Added check for DMA mapping errors 2013-10-25 09:57:57 +01:00
BusLogic.h [SCSI] BusLogic: Port driver to 64-bit. 2013-06-26 18:32:47 -07:00
bvme6000_scsi.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
ch.c scsi: convert to idr_alloc() 2013-02-27 19:10:18 -08:00
constants.c [SCSI] scsi constants: command, sense key + additional sense strings 2013-07-09 22:52:29 +01:00
dc395x.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
dc395x.h
dmx3191d.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
dpt_i2o.c [SCSI] dpt_i2o: return SCSI_MLQUEUE_HOST_BUSY when in reset 2013-10-25 11:40:42 +01:00
dpti.h [SCSI] dpt_i2o: Remove DPTI_STATE_IOCTL 2013-10-25 11:36:26 +01:00
dtc.c scsi/NCR5380: fix and standardize NDEBUG macros 2014-05-28 12:10:43 +02:00
dtc.h NCR5830: switch to ->show_info() 2013-04-09 14:13:17 -04:00
eata.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
eata_generic.h
eata_pio.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
eata_pio.h
esp_scsi.c esp_scsi: Fix tag state corruption when autosensing. 2013-08-01 18:08:34 -07:00
esp_scsi.h esp_scsi: Fix tag state corruption when autosensing. 2013-08-01 18:08:34 -07:00
fdomain.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
fdomain.h
FlashPoint.c [SCSI] BusLogic: Port driver to 64-bit. 2013-06-26 18:32:47 -07:00
g_NCR5380.c scsi/NCR5380: remove old CVS keywords 2014-05-28 12:05:37 +02:00
g_NCR5380.h scsi/NCR5380: remove old CVS keywords 2014-05-28 12:05:37 +02:00
g_NCR5380_mmio.c
gdth.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
gdth.h gdth: switch to ->show_info() 2013-04-09 14:13:16 -04:00
gdth_ioctl.h
gdth_proc.c gdth: switch to ->show_info() 2013-04-09 14:13:16 -04:00
gdth_proc.h gdth: switch to ->show_info() 2013-04-09 14:13:16 -04:00
gvp11.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
gvp11.h
hosts.c [SCSI] scsi_error: disable eh_deadline if no host_reset_handler is set 2014-03-15 10:18:59 -07:00
hpsa.c hpsa: fix handling of hpsa_volume_offline return value 2014-06-02 09:55:02 +02:00
hpsa.h hpsa: fix event filtering to prevent excessive rescans with old firmware 2014-06-02 09:54:59 +02:00
hpsa_cmd.h hpsa: fix handling of hpsa_volume_offline return value 2014-06-02 09:55:02 +02:00
hptiop.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
hptiop.h [SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA 2012-11-27 08:59:43 +04:00
imm.c imm: switch to ->show_info() 2013-04-09 14:13:16 -04:00
imm.h
in2000.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
in2000.h
initio.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
initio.h
ipr.c Merge branch 'for-3.15/core' of git://git.kernel.dk/linux-block 2014-04-01 19:19:15 -07:00
ipr.h [SCSI] ipr: Add new CCIN definition for Grand Canyon support 2014-03-19 15:04:42 -07:00
ips.c [SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers 2013-11-29 08:48:39 +04:00
ips.h ips: switch to ->show_info() 2013-04-09 14:13:27 -04:00
iscsi_boot_sysfs.c [SCSI] iscsi_boot_sysfs: Fix a memory leak in iscsi_boot_destroy_kset() 2014-03-15 10:19:19 -07:00
iscsi_tcp.c net: Split sk_no_check into sk_no_check_{rx,tx} 2014-05-23 16:28:53 -04:00
iscsi_tcp.h net: Fix use after free by removing length arg from sk_data_ready callbacks. 2014-04-11 16:15:36 -04:00
jazz_esp.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
Kconfig virtio-scsi: Enable DIF/DIX modes in SCSI host LLD 2014-06-02 12:42:19 -07:00
lasi700.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
libiscsi.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-06-12 22:38:32 -07:00
libiscsi_tcp.c [SCSI] libiscsi: Reduce locking contention in fast path 2014-03-15 10:19:18 -07:00
libsrp.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
mac53c94.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mac53c94.h
mac_esp.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
mac_scsi.c scsi/NCR5380: fix and standardize NDEBUG macros 2014-05-28 12:10:43 +02:00
mac_scsi.h scsi/NCR5380: remove old CVS keywords 2014-05-28 12:05:37 +02:00
Makefile [SCSI] aci7xxx_old: delete decade+ obsolete driver 2013-12-19 07:39:02 -08:00
megaraid.c [SCSI] megaraid: simplify internal command handling 2014-03-27 08:26:31 -07:00
megaraid.h [SCSI] megaraid: simplify internal command handling 2014-03-27 08:26:31 -07:00
mesh.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
mesh.h
mvme16x_scsi.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
mvme147.c switch wd33c93 to ->show_info() 2013-04-09 14:13:15 -04:00
mvme147.h
mvumi.c SCSI: remove unnecessary pci_set_drvdata() 2013-10-14 15:26:04 +02:00
mvumi.h [SCSI] mvumi: Use PCI_VENDOR_ID_MARVELL_EXT for 0x1b4b 2013-04-15 14:30:44 -06:00
ncr53c8xx.c treewide: Fix common typo in "identify" 2013-10-14 15:31:06 +02:00
ncr53c8xx.h
NCR53c406a.c
NCR5380.c scsi/NCR5380: fix and standardize NDEBUG macros 2014-05-28 12:10:43 +02:00
NCR5380.h scsi/NCR5380: dprintk macro 2014-05-28 18:14:16 +02:00
NCR_D700.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
NCR_D700.h
NCR_Q720.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
NCR_Q720.h
nsp32.c [SCSI] nsp32: use mdelay instead of large udelay constants 2013-06-19 17:53:35 +02:00
nsp32.h
nsp32_debug.c treewide: fix a few typos in comments 2011-05-10 10:16:21 +02:00
nsp32_io.h
osst.c block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
osst.h
osst_detect.h
osst_options.h
pas16.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
pas16.h scsi/NCR5380: remove redundant HOSTS_C macro tests 2014-05-28 12:05:36 +02:00
pmcraid.c SCSI fixes on 20131206 2013-12-06 08:30:18 -08:00
pmcraid.h scsi: Fix typo in pmcraid.h 2012-02-21 11:40:37 +01:00
ppa.c ppa: switch to ->show_info() 2013-04-09 14:13:17 -04:00
ppa.h
ps3rom.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
qla1280.c x86, platforms: Remove SGI Visual Workstation 2014-02-27 08:07:39 -08:00
qla1280.h
qlogicfas.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
qlogicfas408.c
qlogicfas408.h
qlogicpti.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c Merge branch 'async-scsi-resume' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci 2014-04-11 17:23:52 -07:00
scsi.h
scsi_debug.c scsi_debug: simple short transfer injection 2014-05-19 19:57:31 +02:00
scsi_devinfo.c [SCSI] Workaround for disks that report bad optimal transfer length 2013-06-24 13:00:10 -07:00
scsi_error.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2014-06-11 08:41:17 -07:00
scsi_ioctl.c
scsi_lib.c Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2014-06-11 08:41:17 -07:00
scsi_lib_dma.c scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:31:23 -04:00
scsi_logging.h
scsi_module.c
scsi_netlink.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
scsi_pm.c scsi: async sd resume 2014-04-10 15:30:35 -07:00
scsi_priv.h scsi: async sd resume 2014-04-10 15:30:35 -07:00
scsi_proc.c fix buffer leak after "scsi: saner replacements for ->proc_info()" 2013-05-31 15:16:51 -04:00
scsi_sas_internal.h
scsi_scan.c Merge branch 'async-scsi-resume' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci 2014-04-11 17:23:52 -07:00
scsi_sysctl.c scsi: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
scsi_sysfs.c SCSI misc on 20140401 2014-04-01 18:49:04 -07:00
scsi_tgt_if.c scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:31:23 -04:00
scsi_tgt_lib.c [SCSI] do not manipulate device reference counts in scsi_get/put_command 2014-03-15 10:19:24 -07:00
scsi_tgt_priv.h
scsi_trace.c [SCSI] scsi_trace: Decode UNMAP bit in WRITE SAME(10) 2011-05-24 12:38:36 -04:00
scsi_transport_api.h
scsi_transport_fc.c fc: ensure scan_work isn't active when freeing fc_rport 2014-06-25 13:29:30 +02:00
scsi_transport_fc_internal.h
scsi_transport_iscsi.c Merge branch 'master' into for-next 2014-02-20 14:54:28 +01:00
scsi_transport_sas.c [SCSI] scsi_transport_sas: move bsg destructor into sas_rphy_remove 2014-05-22 15:54:03 -07:00
scsi_transport_spi.c [SCSI] scsi_transport_spi: fix for unbalanced reference counting 2012-05-10 09:06:12 +01:00
scsi_transport_srp.c scsi_transport_srp: Fix two kernel-doc warnings 2014-03-24 10:05:30 -07:00
scsi_transport_srp_internal.h
scsi_typedefs.h
scsicam.c fs: move code out of buffer.c 2012-01-03 22:54:07 -05:00
sd.c SCSI for-linus on 20140609 2014-06-09 18:54:06 -07:00
sd.h [SCSI] sd: Quiesce mode sense error messages 2014-03-27 08:26:33 -07:00
sd_dif.c bio-integrity: Convert to bvec_iter 2013-11-23 22:33:50 -08:00
ses.c [SCSI] ses: Use vpd information from scsi_device 2014-03-27 08:26:31 -07:00
sg.c block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
sgiwd93.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sim710.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sni_53c710.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sr.c scsi: reintroduce scsi_driver.init_command 2014-05-19 12:35:09 +02:00
sr.h [SCSI] sr: check_events() ignore GET_EVENT when TUR says otherwise 2011-07-21 14:15:58 -07:00
sr_ioctl.c scsi: Fix up files implicitly depending on module.h inclusion 2011-10-31 19:31:24 -04:00
sr_vendor.c
st.c block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
st.h [SCSI] st: raise device limit 2012-09-14 17:59:29 +01:00
st_options.h
stex.c SCSI: remove unnecessary pci_set_drvdata() 2013-10-14 15:26:04 +02:00
storvsc_drv.c [SCSI] storvsc: NULL pointer dereference fix 2014-03-12 13:16:54 +04:00
sun3_NCR5380.c scsi/NCR5380: dprintk macro 2014-05-28 18:14:16 +02:00
sun3_scsi.c scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c 2014-05-28 12:16:28 +02:00
sun3_scsi.h scsi/NCR5380: reduce depth of sun3_scsi nested includes 2014-05-28 12:11:33 +02:00
sun3_scsi_vme.c scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c 2014-05-28 12:16:28 +02:00
sun3x_esp.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sun_esp.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sym53c416.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sym53c416.h
t128.c scsi/NCR5380: remove old CVS keywords 2014-05-28 12:05:37 +02:00
t128.h scsi/NCR5380: remove old CVS keywords 2014-05-28 12:05:37 +02:00
tmscsim.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
tmscsim.h [SCSI] tmscsim: Move 'last_reset' into host structure 2013-10-25 11:51:37 +01:00
u14-34f.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
ultrastor.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
ultrastor.h
virtio_scsi.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-06-12 22:38:32 -07:00
vmw_pvscsi.c [SCSI] vmw_pvscsi: Some improvements in pvscsi driver. 2014-03-19 15:04:46 -07:00
vmw_pvscsi.h [SCSI] vmw_pvscsi: Some improvements in pvscsi driver. 2014-03-19 15:04:46 -07:00
wd33c93.c switch wd33c93 to ->show_info() 2013-04-09 14:13:15 -04:00
wd33c93.h switch wd33c93 to ->show_info() 2013-04-09 14:13:15 -04:00
wd7000.c [SCSI] remove deprecated IRQF_DISABLED from SCSI 2014-03-19 15:04:44 -07:00
zalon.c Drivers: scsi: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
zorro7xx.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00