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616503d1d8
linux/drivers/s390/cio
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Sebastian Ott 616503d1d8 s390/cio: improve locking during cmbe allocation 
During allocation of extended measurement blocks we check if the device is
already active for channel measurement and add the device to a list of
devices with active channel measurement. The check is done under ccwlock
protection and the list modification is guarded by a different lock.

To guarantee that both states are in sync make sure that both locks
are held during the allocation process (like it's already done for the
"normal" measurement block allocation).

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-10-14 14:32:03 +02:00
..
airq.c s390/nohz: use a per-cpu flag for arch_needs_cpu 2014-10-09 09:14:02 +02:00
blacklist.c s390: remove use of seq_printf return value 2015-04-15 16:35:25 -07:00
blacklist.h
ccwgroup.c s390/ccwgroup: use ccwgroup_ungroup wrapper 2014-06-16 10:32:52 +02:00
ccwreq.c s390: cio driver &__get_cpu_var replacements 2014-08-26 13:45:52 -04:00
chp.c s390/cio: replace strnicmp with strncasecmp 2014-10-14 02:18:25 +02:00
chp.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
chsc_sch.c s390: cio driver &__get_cpu_var replacements 2014-08-26 13:45:52 -04:00
chsc_sch.h
chsc.c s390/cio: Implement proper Link Incident Record handling 2015-07-22 09:58:06 +02:00
chsc.h s390/cio: fix multiple structure definitions 2014-05-20 08:58:53 +02:00
cio_debug.h
cio.c s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
cio.h s390/lowcore: replace lowcore irb array with a per-cpu variable 2014-05-28 10:39:16 +02:00
cmf.c s390/cio: improve locking during cmbe allocation 2015-10-14 14:32:03 +02:00
crw.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
css.c s390/css: Prevent unnecessary allocation in subchannel loop 2013-12-16 14:37:42 +01:00
css.h s390/cio: Delay scan for newly available I/O devices 2013-12-16 14:37:41 +01:00
device_fsm.c s390: cio driver &__get_cpu_var replacements 2014-08-26 13:45:52 -04:00
device_id.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
device_ops.c s390/cio: Fix comma 2015-07-22 09:58:06 +02:00
device_pgid.c s390/cio: handle unknown pgroup state 2013-02-14 15:55:09 +01:00
device_status.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
device.c s390/cio: fix use after free in cmb processing 2015-10-14 14:32:02 +02:00
device.h s390/cio: fix early init counter usage 2013-04-17 14:07:33 +02:00
eadm_sch.c s390: remove unneeded variables 2015-08-07 09:57:01 +02:00
eadm_sch.h s390/eadm_sch: improve quiesce handling 2013-10-24 17:16:58 +02:00
fcx.c [S390] drivers: Correct size given to memset 2009-12-18 17:43:32 +01:00
idset.c s390/cio: idset.c: remove some unused functions 2015-01-08 10:02:50 +01:00
idset.h s390/cio: idset.c: remove some unused functions 2015-01-08 10:02:50 +01:00
io_sch.h s390/cio: dont abort verification after missing irq 2013-02-14 15:55:07 +01:00
ioasm.h [S390] cio: move asms to generic header 2011-03-15 17:08:23 +01:00
isc.c
itcw.c [S390] cio: reduce memory consumption of itcw structures 2011-01-05 12:47:29 +01:00
Makefile s390/cio: add eadm subchannel driver 2012-09-26 15:45:00 +02:00
orb.h s390: add eadm related structures 2012-09-26 15:44:57 +02:00
qdio_debug.c qdio: Keep device-specific dbf entries 2014-06-16 10:31:58 +02:00
qdio_debug.h qdio: Keep device-specific dbf entries 2014-06-16 10:31:58 +02:00
qdio_main.c qdio: Keep device-specific dbf entries 2014-06-16 10:31:58 +02:00
qdio_setup.c s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
qdio_thinint.c s390/airq: simplify adapter interrupt code 2013-06-26 21:10:28 +02:00
qdio.h s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
scm.c s390/scm_block: do not hide eadm subchannel dependency 2013-11-15 14:08:42 +01:00