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2015-03-11dpaa_eth: memset the local declared arrayMarian-Cristian Rotariu
For some reason, in the simulator, the newly declared local array does not have the value set on 0. This patch will memset the array to 0. These values are sent to the BMan driver. Signed-off-by: Marian-Cristian Rotariu <marian.rotariu@freescale.com> Change-Id: I1a8c9c48748885e021d7d45ce3286e23a4e3c39d Reviewed-on: http://git.am.freescale.net:8181/30393 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32505
2015-03-11dpaa_eth: fix debugfs errorsMarian-Cristian Rotariu
This patch removes one header dependency and attaches the debugfs directory of the DPAA Ethernet driver to the root directory of the debugfs. Signed-off-by: Marian-Cristian Rotariu <marian.rotariu@freescale.com> Change-Id: Ib84fcbd86be7e9666ff8274c2aa52915771df988 Reviewed-on: http://git.am.freescale.net:8181/29106 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-by: Mingkai Hu <Mingkai.Hu@freescale.com> Reviewed-by: Yang Li <LeoLi@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32504
2015-03-11dpaa_eth: fix endianness issue in the dts parserMarian-Cristian Rotariu
The phandle value in the dtb is a BE value and will not be properly parsed on a LE architecture. This patch adds the proper device tree parser API call that has the conversion to a proper architecture integrated in its implementation. Change-Id: I2c462acaf0801bb47a2179e02fc9c8d610a6f0ff Signed-off-by: Marian-Cristian Rotariu <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/25779 Reviewed-on: http://git.am.freescale.net:8181/32503 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com>
2015-03-11dpaa_eth: make the S/G rx routine endian portableMarian-Cristian Rotariu
This patch modifies the shared S/G rx routine used by shared and macless driver to properly receive the S/G frames from FMan. Signed-off-by: Marian-Cristian Rotariu <marian.rotariu@freescale.com> Change-Id: Icc467cb9ced12db75db28876e606e23fd3ee7788 Reviewed-on: http://git.am.freescale.net:8181/22852 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32502
2015-03-11dpaa_eth: convert sg entry to be endian portableMarian-Cristian Rotariu
The S/G entry resides in the main memory and is used directly by the FMan, therefore it needs proper conversion on both rx and tx. Change-Id: I4d85d80589fb8b72e98a13b9665ff2ebffcfc387 Reviewed-on: http://git.am.freescale.net:8181/22443 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com> Tested-by: Marian Cristian Rotariu <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32501
2015-03-11dpaa_eth: make the common code endian portableMarian-Cristian Rotariu
The parse results structure is in the main memory and is used by the FMan, which is BE. Also, the release function for an SG table entry should use the address in a proper CPU endianness. Signed-off-by: Marian-Cristian Rotariu <marian.rotariu@freescale.com> Change-Id: Iddc6ee051426a1a584e3a8b15a18b6b1544d8b49 Reviewed-on: http://git.am.freescale.net:8181/22451 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32500
2015-03-11dpaa_eth: make onic dt parser unaware of endianessRotariu Marian Cristian-B44860
The device tree values are stored in BE format. It is the of parser and driver parser job to convert the data into CPU endianness. This patch converts bpid, fqids values and phandles to CPU endianness. Change-Id: I0ea0453151f7e175c5112f145c47c6bc182a6694 Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20909 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32499
2015-03-11mac: make the dt parser endianness-freeRotariu Marian Cristian-B44860
The OF API used in the mac dev driver parses the device tree and uses raw pointers to data. If the CPU is LE the values read will be mixed and the device will not probe. This patch belongs to the big effort of porting eth & mac drivers to ARM architecture. Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Change-Id: Ibb7893d950e92bf4038cf565172a77432adc1055 Reviewed-on: http://git.am.freescale.net:8181/20928 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32498
2015-03-11dpaa_eth: fix static declarations for onicRotariu Marian Cristian-B44860
The function should be properly declared as being extern or static. The lack of scope identifier will result in a sparse error. Change-Id: I32713c3c806ed6d14ae9c33d732fe42aec354b2f Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20906 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32497
2015-03-11offline_port: convert dt into CPU endiannessRotariu Marian Cristian-B44860
The device tree values are stored in BE format by the dt compiler. In order to support different architectures, not only BE, the values read by the offline port driver should be converted into CPU endianness. This patch convert the dt values into CPU endianness and fixes some sparse errors related to endianness. Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Change-Id: Id7adce3b6f73619c58ac1cee9201bb63131f8d58 Reviewed-on: http://git.am.freescale.net:8181/21083 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32496
2015-03-11dpaa_eth: convert fq dts entries to CPU endianessRotariu Marian Cristian-B44860
The data related to fqs from dts are in BE. In order to be used by the CPU, the data need to be converted into CPU endianess. Because the current fqids structure is used in many ways and in many files, the code for endianess conversion is not localized. To make this patch as simple as possible, an intermediary variable was used. Change-Id: I1beec33fa3ce816899e3bb02e0cf88ed0b0d0520 Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20964 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32495
2015-03-11dpaa_eth: fix forward declarations for maclessRotariu Marian Cristian-B44860
The function should be properly declared as being extern or static. The lack of scope identifier together with the lack of the forward declaration will result in a sparse error. Change-Id: I0b976be7c27d9b6ae66d1725433fb1aefcc407ba Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20937 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32494
2015-03-11dpaa_eth: remove unnecessary conversionRotariu Marian Cristian-B44860
Protocol and nexthdr, variables from ipv4 and ipv6 layers, are 1 byte long, therefore no byte order conversion is needed. Change-Id: I487b044d9ad942cf39ccbb500318ae8d7d0d9e08 Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20934 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32493
2015-03-11dpaa_eth: move static variable definitionRotariu Marian Cristian-B44860
The definition of any static variable should be in the header file. Error reported by sparse. Change-Id: Ic419e2cd80c05d1b4618d9260a61b6857aa4874a Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20986 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32492
2015-03-11dpaa_eth: convert bp dts node in CPU endianessRotariu Marian Cristian-B44860
The addresses used to parse the device tree contain BE data as the entire device tree data. Because the CPU operates with bp data, conversion to CPU endianess is needed. Change-Id: I0f876bde5bbb9832f15289b6ecb192f6c3ba5f56 Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/20933 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32491
2015-03-11dpaa_eth: convert define into net byte orderRotariu Marian Cristian-B44860
All the constant definitions are used in CPU endianess and the skb fields are in network byte order. A conversion should be used. Signed-off-by: Rotariu Marian Cristian-B44860 <marian.rotariu@freescale.com> Change-Id: I0b07bb64b9cb2cf5c490e63152da0dd26e67131c Reviewed-on: http://git.am.freescale.net:8181/20985 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Reviewed-on: http://git.am.freescale.net:8181/32490
2015-02-25fsl_qman: add qman_delete_cgr_safe()Madalin Bucur
Add qman_delete_cgr_safe() that can be called from any CPU. This in turn schedules qman_delete_cgr() on the proper CPU. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I762e83108533a4e537a534e90073df26a6b7b09c Reviewed-on: http://git.am.freescale.net:8181/28532 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: fix several typos in mac-apiMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I4974af9d90c0276b47bf46d8fba09d207fc0c3f5 Reviewed-on: http://git.am.freescale.net:8181/28880 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: remove Rx pool channel on unloadMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I2ca632118579b34a2c88ced0abb274cf20712976 Reviewed-on: http://git.am.freescale.net:8181/28552 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: delete and release used CGRsMadalin Bucur
The CGRs need to be deteled and released upon driver removal. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I8bfe5f10388c0d90761a6b8ed9d8816b65625864 Reviewed-on: http://git.am.freescale.net:8181/28534 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: release CGR ids after deleteMadalin Bucur
Improper ordering of CGR release and delete operations lead to QMan CGR list corruption. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I7817210fbc71d5b7b414ba866c588e97e89e39f0 Reviewed-on: http://git.am.freescale.net:8181/28533 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: remove duplicate ndo_init entryMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I97d5d65ac7a08ad86c989c3a5a5c8f0dae0c7f21 Reviewed-on: http://git.am.freescale.net:8181/27827 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: remove stray semicolonMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I65b4dd679835504d5031f341b61bbf4e8b09b6cd Reviewed-on: http://git.am.freescale.net:8181/27614 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: remove stray semicolonMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I9e2c0f43bee3842ff3822ae4bdd0a7d806c5b6f7 Reviewed-on: http://git.am.freescale.net:8181/27613 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Marian Cristian Rotariu <marian.rotariu@freescale.com>
2015-02-25dpaa_eth: remove unused device node paramMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: Icd0fcfadbbf24edfd7eaa1bdac2ccc18951df9eb Reviewed-on: http://git.am.freescale.net:8181/26788
2015-02-25dpaa_eth: make use of devm_alloc_percpu()Madalin Bucur
Use resource managed variant of alloc_percpu(). Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I51f3fe816792535bdf01827c77a6f504f9c22e7a Reviewed-on: http://git.am.freescale.net:8181/24141 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Tested-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com>
2015-02-25devres: add devm_alloc_percpu()Madalin Bucur
Introduce managed counterparts for alloc_percpu() and free_percpu(). Add devm_alloc_percpu() and devm_free_percpu() into the managed interfaces list. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I93546348e7b0e1974fda8b6c7a3b3710ce45b724 Reviewed-on: http://git.am.freescale.net:8181/24140 Reviewed-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Tested-by: Madalin-Cristian Bucur <madalin.bucur@freescale.com> Conflicts: Documentation/driver-model/devres.txt drivers/base/devres.c
2015-02-25fix multiple dpa_bp free warningsMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I6a27c4300890d8c3a2f892bbbc254ebc9ce6d538 Reviewed-on: http://git.am.freescale.net:8181/16879
2015-02-25dpaa_eth: adjust advanced drivers to older kernelMadalin Bucur
Support for multiple drivers per kernel module comes in kernel 3.14 so we are forced to generate several modules for the advanced drivers. This patch can be dropped when the code is rebased on a kernel newer than 3.14. The problem is with the MODULE_DEVICE_TABLE macro that only from 3.14 generates different named structured based on the name parameter. The change that introduces that also needs a synchronized change in scripts/mod/file2alias.c. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
2015-02-25dpaa_eth: enable compilation as a moduleMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I24f7b9c39c1cf24dbb78987c491ab9a56c22eb10 Reviewed-on: http://git.am.freescale.net:8181/15302 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25dpaa_eth: exports needed by the advanced driversMadalin Bucur
Add symbol exports required by the advanced drivers. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I66f280f8ec9fb1da73dc2db772c0287360fa5417 Reviewed-on: http://git.am.freescale.net:8181/15300 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/dpaa_eth_common.c
2015-02-25dpaa_eth: reorganize DPAA Ethernet MakefileMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I4bb6955baf63962dbb5dda09fd2302dbaba9c85a Reviewed-on: http://git.am.freescale.net:8181/15299 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/Makefile
2015-02-25dpaa_eth: group DPAA generic codeMadalin Bucur
Group DPAA Ethernet generic driver code under one Kconfig option. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I96061198d022d344280f8b52b14f25e9b3daf2ba Reviewed-on: http://git.am.freescale.net:8181/15298 Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/Makefile
2015-02-25dpaa_eth: group DPAA advanced driversMadalin Bucur
Group the DPAA Ethernet advanced drivers under one Kconfig option. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I832e0dd99e18087fa0b091373f023c67ea69a434 Reviewed-on: http://git.am.freescale.net:8181/15297 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/Kconfig drivers/net/ethernet/freescale/dpa/Makefile
2015-02-25dpaa_eth: use common initialization functionMadalin Bucur
Use a common initialization function for MACless, shared and proxy Ethernet drivers. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I7a0ec70b33ad7ad92cb559dbd828572f83b5c98e Reviewed-on: http://git.am.freescale.net:8181/15296 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/dpaa_eth_base.c
2015-02-25dpaa_eth: move debugfs initialization in generic moduleMadalin Bucur
Initialize debugfs from the DPAA generic driver. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I032589647a56a6704b4044078a8468ca786149fc Reviewed-on: http://git.am.freescale.net:8181/15295 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25dpaa_eth: move header inclusionMadalin Bucur
Move dpaa_debugfs.h header inclusion where needed. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I2d85c4bc3822987d019bde07b7539875872b9125 Reviewed-on: http://git.am.freescale.net:8181/15294 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25dpaa_eth: move debugfs initMadalin Bucur
DPAA Ethernet debugfs is initialized from the Ethernet driver. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: Ia42ee938286cede2e60837388f376b477bc28c62 Reviewed-on: http://git.am.freescale.net:8181/15293 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25dpaa_eth: remove unused codeMadalin Bucur
Removed empty code. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I0abc82f3a49b073044d5cabd704ff4771990dcfb Reviewed-on: http://git.am.freescale.net:8181/15292 Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com> Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25dpaa_eth: remove tristate optionMadalin Bucur
Tristate option in Kconfig is not supported for those features. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Change-Id: I2215749c57b56a5f6bb1b426a819beda97926e81 Reviewed-on: http://git.am.freescale.net:8181/15291 Reviewed-by: Cristian Bercaru <cristian.bercaru@freescale.com>
2015-02-25fmd: export required functionsMadalin Bucur
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
2015-02-25dpaa_eth: export required functionMadalin Bucur
Exported API is used by the Ethernet driver. Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> Conflicts: drivers/net/ethernet/freescale/dpa/mac-api.c
2015-02-13Merge branch 'rtmerge'Scott Wood
Signed-off-by: Scott Wood <scottwood@freescale.com> Conflicts: arch/arm/kvm/mmu.c arch/arm/mm/proc-v7-3level.S arch/powerpc/kernel/vdso32/getcpu.S drivers/crypto/caam/error.c drivers/crypto/caam/sg_sw_sec4.h drivers/usb/host/ehci-fsl.c
2015-02-13Linux 3.12.37-rt51 REBASESteven Rostedt (Red Hat)
2015-02-13workqueue: Prevent deadlock/stall on RTThomas Gleixner
Austin reported a XFS deadlock/stall on RT where scheduled work gets never exececuted and tasks are waiting for each other for ever. The underlying problem is the modification of the RT code to the handling of workers which are about to go to sleep. In mainline a worker thread which goes to sleep wakes an idle worker if there is more work to do. This happens from the guts of the schedule() function. On RT this must be outside and the accessed data structures are not protected against scheduling due to the spinlock to rtmutex conversion. So the naive solution to this was to move the code outside of the scheduler and protect the data structures by the pool lock. That approach turned out to be a little naive as we cannot call into that code when the thread blocks on a lock, as it is not allowed to block on two locks in parallel. So we dont call into the worker wakeup magic when the worker is blocked on a lock, which causes the deadlock/stall observed by Austin and Mike. Looking deeper into that worker code it turns out that the only relevant data structure which needs to be protected is the list of idle workers which can be woken up. So the solution is to protect the list manipulation operations with preempt_enable/disable pairs on RT and call unconditionally into the worker code even when the worker is blocked on a lock. The preemption protection is safe as there is nothing which can fiddle with the list outside of thread context. Reported-and_tested-by: Austin Schuh <austin@peloton-tech.com> Reported-and_tested-by: Mike Galbraith <umgwanakikbuti@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://vger.kernel.org/r/alpine.DEB.2.10.1406271249510.5170@nanos Cc: Richard Weinberger <richard.weinberger@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: stable-rt@vger.kernel.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-02-13sched: Do not clear PF_NO_SETAFFINITY flag in select_fallback_rq()Steven Rostedt
I talked with Peter Zijlstra about this, and he told me that the clearing of the PF_NO_SETAFFINITY flag was to deal with the optimization of migrate_disable/enable() that ignores tasks that have that flag set. But that optimization was removed when I did a rework of the cpu hotplug code. I found that ignoring tasks that had that flag set would cause those tasks to not sync with the hotplug code and cause the kernel to crash. Thus it needed to not treat them special and those tasks had to go though the same work as tasks without that flag set. Now that those tasks are not treated special, there's no reason to clear the flag. May still need to be tested as the migrate_me() code does not ignore those flags. Cc: stable-rt@vger.kernel.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Clark Williams <williams@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140701111444.0cfebaa1@gandalf.local.home Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-02-13Fix latency histogram after "hrtimer: Set expiry time before ↵Ben Hutchings
switch_hrtimer_base()" In an rt-kernel with CONFIG_MISSED_TIMER_OFFSETS_HIST enabled, __hrtimer_start_range_ns() now crashes, as new_base is not assigned before it is used. Tested-by: Carsten Emde <C.Emde@osadl.org> Cc: stable-rt@vger.kernel.org Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-02-13timer: do not spin_trylock() on UPSebastian Andrzej Siewior
This will void a warning comming from the spin-lock debugging code. The lock avoiding idea is from Steven Rostedt. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-02-13Revert "migrate_disable pushd down in atomic_dec_and_spin_lock"Sebastian Andrzej Siewior
This reverts commit ff9c870c3e27d58c9512fad122e91436681fee5a. Cc: stable-rt@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2015-02-13Revert "drivers/net: tulip_remove_one needs to call pci_disable_device()"Steven Rostedt (Red Hat)
This reverts commit 4a77edc195f0b03644e84dda00fcfe9827868e8e. This commit was added to the -rt tree and submitted to stable. But because the stable version inserted pci_disable_device() in a slightly different location, when stable was merged it caused this to be duplicated. Remove the version that was added to -rt and keep the stable one. Link: http://lkml.kernel.org/r/1403149603.5189.10.camel@marge.simpson.net Reported-by: Mike Galbraith <umgwanakikbuti@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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