Accepting request 885467 from home:markkp:branches:Base:System

- Added s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch
  dasd: change default scheduler to reduce CPU consumption (bsc#1183810)
- Modified s390-tools-sles12-create-filesystem-links.patch to fit after
  applying s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch
- Removed 59-dasd.rules-wait_for.patch obsoleted by bsc#1183810.

OBS-URL: https://build.opensuse.org/request/show/885467
OBS-URL: https://build.opensuse.org/package/show/Base:System/s390-tools?expand=0&rev=116

s390-tools-sles12-create-filesystem-links.patch

@@ -23,4 +23,4 @@
 +
  LABEL="dasd_symlinks_end"
  
- # on device add set request queue scheduler to deadline
+ # on device add set request queue scheduler to none

s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch

@@ -0,0 +1,52 @@
+Subject: [PATCH] [BZ 192049] udev/dasd: change DASD udev-rule to set none scheduler
+From: Stefan Haberland <sth@linux.ibm.com>
+
+Description:   dasd: change default scheduler to reduce CPU consumption
+Symptom:       CPU consumption up to 20% higher for mq-deadline
+               compared to none scheduler for DASD devices with no
+               difference in throughput.
+Problem:       Performance analysis showed that with recent DASD
+               device drivers using multi-queue block queuing the
+               throughput of mq-deadline and none scheduler is nearly
+               identical but the CPU consumption of mq-deadline
+               scheduler due to its optimizations is up to 20% higher
+               compared to none scheduler.
+Solution:      Set none scheduler as default in the DASD udev rule.
+Reproduction:  Use DASD devices with mq-deadline scheduler.
+Upstream-ID:   a65bc51cf4e5c1fe628bb182cc1a02ee83eb102d
+Problem-ID:    192049
+
+Upstream-Description:
+
+              udev/dasd: change DASD udev-rule to set none scheduler
+
+              Performance evaluation showed that using the mq-deadline scheduler for DASD
+              devices leads to a significantly higher CPU consumption compared to using
+              none scheduler while having the same amount of throughput.
+              Setting none scheduler as default in the dasd udev rule.
+
+              Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
+              Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
+              Signed-off-by: Jan Hoeppner <hoeppner@linux.ibm.com>
+
+
+Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
+---
+ etc/udev/rules.d/59-dasd.rules |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/etc/udev/rules.d/59-dasd.rules
++++ b/etc/udev/rules.d/59-dasd.rules
+@@ -26,10 +26,10 @@
+ 
+ LABEL="dasd_symlinks_end"
+ 
+-# on device add set request queue scheduler to deadline
++# on device add set request queue scheduler to none
+ SUBSYSTEM!="block", GOTO="sched_end"
+ 
+ ACTION!="change", GOTO="sched_end"
+-KERNEL=="dasd*[!0-9]", TEST=="queue/scheduler", ATTR{queue/scheduler}="deadline"
++KERNEL=="dasd*[!0-9]", TEST=="queue/scheduler", ATTR{queue/scheduler}="none"
+ 
+ LABEL="sched_end"

s390-tools.changes

@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Wed Apr 14 18:13:27 UTC 2021 - Mark Post <mpost@suse.com>
+
+- Added s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch
+  dasd: change default scheduler to reduce CPU consumption (bsc#1183810)
+- Modified s390-tools-sles12-create-filesystem-links.patch to fit after
+  applying s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch
+- Removed 59-dasd.rules-wait_for.patch obsoleted by bsc#1183810.
+
 -------------------------------------------------------------------
 Mon Mar  8 20:52:57 UTC 2021 - Mark Post <mpost@suse.com>
 

s390-tools.spec

@@ -99,6 +99,7 @@ Patch9:         s390-tools-sles15sp3-03-genprotimg-require-argument-for-ramdisk-
 Patch10:        s390-tools-sles15sp3-04-genprotimg-add-host-key-document-verification-suppor.patch
 Patch11:        s390-tools-sles15sp3-zkey-Fix-APQN-property-names.patch
 Patch12:        s390-tools-sles15sp3-zipl-fix-4k-scsi-ipl.patch
+Patch13:        s390-tools-sles15sp3-dasd-change-DASD-udev-rule-to-set-none-scheduler.patch
 
 # SUSE patches
 Patch900:       s390-tools-sles12-zipl_boot_msg.patch
@@ -110,11 +111,10 @@ Patch905:       s390-tools-sles15sp3-Format-devices-in-parallel.patch
 Patch906:       s390-tools-sles15sp3-Implement-Y-yast_mode.patch
 Patch907:       s390-tools-sles15sp3-Implement-f-for-backwards-compability.patch
 Patch908:       s390-tools-sles15sp3-dasdfmt-retry-BIODASDINFO-if-device-is-busy.patch
-Patch909:       59-dasd.rules-wait_for.patch
+Patch909:       s390-tools-sles12-fdasd-skip-partition-check-and-BLKRRPART-ioctl.patch
-Patch910:       s390-tools-sles12-fdasd-skip-partition-check-and-BLKRRPART-ioctl.patch
+Patch910:       s390-tools-sles15sp1-11-zdev-Do-not-call-zipl-on-initrd-update.patch
-Patch911:       s390-tools-sles15sp1-11-zdev-Do-not-call-zipl-on-initrd-update.patch
+Patch911:       s390-tools-sles15sp3-check-return-code-from-util_file_read_l.patch
-Patch912:       s390-tools-sles15sp3-check-return-code-from-util_file_read_l.patch
+Patch912:       s390-tools-sles15sp3-remove-no-pie-link-arguments.patch
-Patch913:       s390-tools-sles15sp3-remove-no-pie-link-arguments.patch
 
 BuildRequires:  curl-devel
 BuildRequires:  dracut