aboutsummaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAge
* [S390] module function call optimizationMartin Schwidefsky2009-03-26
| | | | | | | | Avoid the detour over the PLT if the branch target of a function call in a module is in the range of the bras (16-bit) or brasl (32-bit) instruction. The PLT is still generated but it is unused. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] bitops: remove likely annotationsHeiko Carstens2009-03-26
| | | | | | | | | likely/unlikely profiling revealed that none of the branches in bitops is taken likely or unlikely. So remove the annotations. In addition the generated code is shorter. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] remove duplicate nul-termination of stringHendrik Brueckner2009-03-26
| | | | | | | strlcpy() does already NUL-terminate the destination string. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] allow usage of string functions in linux/string.hRusty Russell2009-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In introducing a trivial "strstarts()" function in linux/string.h, we hit the following error on s390: In file included from include/linux/bitmap.h:8, from include/linux/cpumask.h:142, from include/linux/smp.h:12, from /home/rusty/devel/kernel/patches/linux-2.6/arch/s390/include/asm/spinlock.h:14, from include/linux/spinlock.h:88, from include/linux/seqlock.h:29, from include/linux/time.h:8, from include/linux/stat.h:60, from include/linux/module.h:10, from arch/s390/lib/string.c:13: include/linux/string.h: In function 'strstarts': include/linux/string.h:124: error: implicit declaration of function 'strlen' include/linux/string.h:124: warning: incompatible implicit declaration of built-in function 'strlen' Because when including asm/string.h from arch/s390/lib/string.c we don't declare the string ops we are about to define, and linux/string.h barfs. The fix is to declare them in this IN_ARCH_STRING_C case, but in general I wonder if there's a neater fix. Reported-by: linux-next Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: merge inbound and outbound handler functionsJan Glauber2009-03-26
| | | | | | | | | The inbound and outbound handlers are nearly identical if the outbound handler uses first_to_check as end index instead of last_move. Since both values are identical at that point the handlers can be merged. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: report SIGA errors directlyJan Glauber2009-03-26
| | | | | | | | | | | | | | | Errors from SIGA instructions are stored in the per queue qdio_error and reported back when the queue handler is called. That opens a race when multiple error conditions occur simultanously. Report SIGA errors immediately in the return value of do_QDIO so the upper layer can react and SIGA errors no longer interfere with other errors. Move the SIGA error handling in qeth from the outbound handler to qeth_flush_buffers. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
* [S390] qdio: tasklet termination in case of module unloadJan Glauber2009-03-26
| | | | | | | | | | If the qdio module is unloaded the tiqdio tasklet must be terminated by tasklet_kill. Move the tasklet_kill after the unregistration of the adapter interrupt so the tiqdio tasklet will not be scheduled anymore before calling tasklet_kill. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: seperate last move index and polling indexJan Glauber2009-03-26
| | | | | | | | | | The index value that indicated that the input queue moved was also used to store the index of the first acknowledged buffer. For non-qebsm only the newest buffer is acknowledged which may be different from the last move index so two seperate values are needed to track the input queue. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: move ACK to newest buffer for devices without QEBSMJan Glauber2009-03-26
| | | | | | | | The ACKnowledgement state should be set on the newest SBAL so an adapter interrupt surpression check needs to scan fewer SBALs. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: call qdio_free also if qdio_shutdown failsJan Glauber2009-03-26
| | | | | | | | | | | qdio_cleanup is a wrapper function that should call qdio_shutdown and qdio_free. qdio_free was not called if an error occured in qdio_shutdown resulting in a missing free of allocated resources. Call qdio_free regardless of the return value of qdio_shutdown. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: proper kill of qdio taskletsJan Glauber2009-03-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The queue tasklets were stopped with tasklet_disable. Although tasklet_disable prevents the tasklet from beeing executed it is still possible that a tasklet is scheduled on a CPU at that point. A following qdio_establish calls tasklet_init which clears the tasklet count and the tasklet state leading to the following Oops: <2>kernel BUG at kernel/softirq.c:392! <4>illegal operation: 0001 [#1] SMP <4>Modules linked in: iptable_filter ip_tables x_tables dm_round_robin dm_multipath scsi_dh sg sd_mod crc_t10dif nfs lockd nfs _acl sunrpc fuse loop dm_mod qeth_l3 ipv6 zfcp qeth scsi_transport_fc qdio scsi_tgt scsi_mod chsc_sch ccwgroup dasd_eckd_mod dasdm od ext3 mbcache jbd <4>Supported: Yes <4>CPU: 0 Not tainted 2.6.27.13-1.1.mz13-default #1 <4>Process blast.LzS_64 (pid: 16445, task: 000000006cc02538, ksp: 000000006cb67998) <4>Krnl PSW : 0704c00180000000 00000000001399f4 (tasklet_action+0xc8/0x1d4) <4> R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3 <4>Krnl GPRS: ffffffff00000030 0000000000000002 0000000000000002 fffffffffffffffe <4> 000000000013aabe 00000000003b6a18 fffffffffffffffd 0000000000000000 <4> 00000000006705a8 000000007d0914a8 000000007d0914b0 000000007fecfd30 <4> 0000000000000000 00000000003b63e8 000000007fecfd90 000000007fecfd30 <4>Krnl Code: 00000000001399e8: b9200021 cgr %r2,%r1 <4> 00000000001399ec: a7740004 brc 7,1399f4 <4> 00000000001399f0: a7f40001 brc 15,1399f2 <4> >00000000001399f4: c0100027e8ee larl %r1,636bd0 <4> 00000000001399fa: bf1f1008 icm %r1,15,8(%r1) <4> 00000000001399fe: a7840019 brc 8,139a30 <4> 0000000000139a02: c0300027e8ef larl %r3,636be0 <4> 0000000000139a08: e3c030000004 lg %r12,0(%r3) <4>Call Trace: <4>([<0000000000139c12>] tasklet_hi_action+0x112/0x1d4) <4> [<000000000013aabe>] __do_softirq+0xde/0x1c4 <4> [<000000000010fa2e>] do_softirq+0x96/0xb0 <4> [<000000000013a8d8>] irq_exit+0x70/0xcc <4> [<000000000010d1d8>] do_extint+0xf0/0x110 <4> [<0000000000113b10>] ext_no_vtime+0x16/0x1a <4> [<000003e0000a3662>] ext3_dirty_inode+0xe6/0xe8 [ext3] <4>([<00000000001f6cf2>] __mark_inode_dirty+0x52/0x1d4) <4> [<000003e0000a44f0>] ext3_ordered_write_end+0x138/0x190 [ext3] <4> [<000000000018d5ec>] generic_perform_write+0x174/0x230 <4> [<0000000000190144>] generic_file_buffered_write+0xb4/0x194 <4> [<0000000000190864>] __generic_file_aio_write_nolock+0x418/0x454 <4> [<0000000000190ee2>] generic_file_aio_write+0x76/0xe4 <4> [<000003e0000a05c2>] ext3_file_write+0x3e/0xc8 [ext3] <4> [<00000000001cc2fe>] do_sync_write+0xd6/0x120 <4> [<00000000001ccfc8>] vfs_write+0xac/0x184 <4> [<00000000001cd218>] SyS_write+0x68/0xe0 <4> [<0000000000113402>] sysc_noemu+0x10/0x16 <4> [<0000020000043188>] 0x20000043188 <4>Last Breaking-Event-Address: <4> [<00000000001399f0>] tasklet_action+0xc4/0x1d4 <6>qdio: 0.0.c61b ZFCP on SC f67 using AI:1 QEBSM:0 PCI:1 TDD:1 SIGA: W AOP <4> <0>Kernel panic - not syncing: Fatal exception in interrupt Use tasklet_kill instead of tasklet_disbale. Since tasklet_schedule must not be called after tasklet_kill use the QDIO_IRQ_STATE_STOPPED to inidicate that a queue is going down and prevent further tasklet schedules in that case. Remove superflous tasklet_schedule from input queue setup, at that time the queues are not ready so the schedule results in a NOP. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: Dont call qdio_shutdown in case qdio_activate failsJan Glauber2009-03-26
| | | | | | | | | Remove the call to qdio_shutdown from qdio_activate since the upper-layer drivers are responsible to call qdio_shutdown when qdio_activate returns with an error. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] qdio: add missing tiq_list lockingJan Glauber2009-03-26
| | | | | | | | | | Add a mutex to protect the tiq_list. Although reading the list is done using RCU adding and removing elements from the list must still happen locked since multiple qdio devices may change the list in parallel otherwise. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Add zcrypt section in MAINTAINERSFelix Beck2009-03-26
| | | | | | | | Add zcrypt section in S390 part of MAINTAINERS file. Signed-off-by: Felix Beck <felix.beck@de.ibm.com> Signed-off-by: Ralph Wuerthner <ralph.wuerthner@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] kernel: Disable switch_amode by defaultGerald Schaefer2009-03-26
| | | | | | | | Disable switch_amode by default because pagetable walk on pre z9 hardware has negative performance impact. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] clock sync mode flagsMartin Schwidefsky2009-03-26
| | | | | | | | | | | | The clock sync mode flag CLOCK_SYNC_STP is not cleared when stp is set offline. In this case the get_sync_clock() function returns -EACCESS and the dasd driver will block all i/o until stp is enabled again. In addition get_sync_clock can return -EACCESS if the clock is not in sync instead of -EAGAIN. Rework the stp/etr online handling to fix these problems. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: prevent workqueue deadlockPeter Oberparleiter2009-03-26
| | | | | | | | | | Subchannel reprobing can block the kslowcrw workqueue indefinitely while waiting for device recognition to finish which is also scheduled to run on kslowcrw. Prevent this deadlock by moving the waiting portion of subchannel reprobing to the cio workqueue. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: remove unused local variableSebastian Ott2009-03-26
| | | | | | | Remove unused subchannel pointer in io_subchannel_recog_done. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: incorrect status check in interrogate functionPeter Oberparleiter2009-03-26
| | | | | | | Fix incorrect check for active I/O in interrogate function. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: fix rc generation after chsc callSebastian Ott2009-03-26
| | | | | | | | | | In some situations a rc in __chsc_do_secm will be overwritten by another one. This shouldn't do harm since todays callers don't check for _specific_ errors but fix it for the sake of correctness. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: fix wrong buffer access in cio_ignore_writeSebastian Ott2009-03-26
| | | | | | | | | Writing only spaces to /proc/cio_ignore will cause a buffer overflow since the size_t value i will not become negative and so buf[-1UL] is accessed. Change the value of i to ssize_t. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: ccw group fix unbind behaviour.Sebastian Ott2009-03-26
| | | | | | | | | For a ccw group device unbinding it from its driver should do the same as a call to ungroup, since this virtual device can not exist without a driver. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: fix sanity checks in ccwgroup driver.Sebastian Ott2009-03-26
| | | | | | | | Some sanity checks in the ccw group driver test the output of container_of macros to be !NULL. Test the input parameters instead. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: ccw group online store - report rcs to the caller.Sebastian Ott2009-03-26
| | | | | | | | In case the ccw group driver refuses to set a device [on|off]line, we should transmit the return code to the caller. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: airq - fix array boundarySebastian Ott2009-03-26
| | | | | | | | MAX_ISC is a valid isc number, so arrays with an index of isc need to have a length of MAX_ISC+1 Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: device scan oom fallback.Sebastian Ott2009-03-26
| | | | | | | | | Since some callers rely on for_each_subchannel_staged to not fail, fall back to brute force scanning using get_subchannel_by_schid in case of a oom situation. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: ensure single load of irq handler pointerHeiko Carstens2009-03-26
| | | | | | | Add barrier to prevent compiler from reloading pointer to irq handler. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio/crw: add/fix lockingHeiko Carstens2009-03-26
| | | | | | | | | | | | | | | The crw_unregister_handler uses xchg + synchronize_sched when unregistering a crw_handler. This doesn't protect crw_collect_info to potentially jump to NULL since it has unlocked code like this: if (crw_handlers[i]) crw_handlers[i](NULL, NULL, 1); So add a mutex which protects the crw handler array for changes. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: ccw device online store - report rc from ccw driver.Sebastian Ott2009-03-26
| | | | | | | | In case the ccw driver refuses to set a device offline, we should transmit the return code to the caller. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Use ccw_device_set_notoper().Cornelia Huck2009-03-26
| | | | | | | | | | | Use ccw_device_set_notoper() (which also deletes the device timer and disables the subchannel) instead of simply setting the state to DEV_STATE_NOT_OPER in the generic not operational handling code. This prevents unexpected interrupts popping up for devices that are deemed not operational. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Try harder to disable subchannel.Cornelia Huck2009-03-26
| | | | | | | | | | | | Acting upon the assumption that cio_disable_subchannel() is only called when we really want to disable the subchannel (a) remove the check for activity (it is already done in ccw_device_offline(), which is the place where it matters) (b) collect pending status via tsch() and ignore it (it can't matter anymore since the subchannel will be disabled). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Use unbind/bind instead of unregister/register.Cornelia Huck2009-03-26
| | | | | | | | | | | | | The common I/O layer may encounter a situation where the device number of a ccw device has changed or a device driver doesn't want to keep a formerly disconnected device becoming operational again. Instead of using device_del()/ device_add() as now, we can just unbind the driver from the device and rebind it to get the desired effect (rebinding) with less overhead. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] move EXPORT_SYMBOLs to definitionsHeiko Carstens2009-03-26
| | | | | | | Move all EXPORT_SYMBOLs to their corresponding definitions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] convert bitmap definitions to CHeiko Carstens2009-03-26
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Remove CONFIG_MACHCHK_WARNING.Heiko Carstens2009-03-26
| | | | | | | Everybody enables it so there is no point for an extra config option. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] split/move machine check handler codeHeiko Carstens2009-03-26
| | | | | | | | Split machine check handler code and move it to cio and kernel code where it belongs to. No functional change. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Fix appldata build break with !NETSachin Sant2009-03-26
| | | | | | | | | | | | | | | | With CONFIG_NET not set appldata build breaks on s390. arch/s390/appldata/built-in.o: In function appldata_get_net_sum_data: appldata_net_sum.c:(.text+0x2684): undefined reference to dev_get_stats appldata_net_sum.c:(.text+0x2688): undefined reference to init_net appldata_net_sum.c:(.text+0x268c): undefined reference to init_net appldata_net_sum.c:(.text+0x2694): undefined reference to dev_base_lock The following patch fixes the issue for me. Signed-off-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] ftrace: dont trace machine check handlerHeiko Carstens2009-03-26
| | | | | | | | The ftrace code is currently not reentrant, so we better don't trace our machine check handler. Machine checks are handled like NMIs on s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Fix hypervisor detection for KVMChristian Borntraeger2009-03-26
| | | | | | | | | | | | | | | | | | | | | | | | Currently we use the cpuid (via STIDP instruction) to recognize LPAR, z/VM and KVM. The architecture states, that bit 0-7 of STIDP returns all zero, and if STIDP is executed in a virtual machine, the VM operating system will replace bits 0-7 with FF. KVM should not use FE to distinguish z/VM from KVM for interested guests. The proper way to detect the hypervisor is the STSI (Store System Information) instruction, which return information about the hypervisors via function code 3, selector1=2, selector2=2. This patch changes the detection routine of Linux to use STSI instead of STIDP. This detection is earlier than bootmem, we have to use a static buffer. Since STSI expects a 4kb block (4kb aligned) this patch also changes the init.data alignment for s390. As this section will be freed during boot, this should be no problem. Patch is tested with LPAR, z/VM, KVM on LPAR, and KVM under z/VM. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] check addressing mode in s390_enable_sieCarsten Otte2009-03-26
| | | | | | | | | | The sie instruction requires address spaces to be switched to run proper. This patch verifies that this is the case in s390_enable_sie, otherwise the kernel would crash badly as soon as the process runs into sie. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] lockdep: trace hardirq off in smp_send_stopChristian Borntraeger2009-03-26
| | | | | | | | | | | | | | | | | | | | | | | | With lockdep we got the following trace after a panic: Badness at /home/autobuild/BUILD/linux-2.6.28-20090204/kernel/lockdep.c:2878 [...] Call Trace: [<0000000000176334>] lock_acquire+0x54/0xbc [<000000000050b4fe>] __atomic_notifier_call_chain+0x6e/0xdc [<000000000050b59c>] atomic_notifier_call_chain+0x30/0x44 [<0000000000504274>] panic+0xd0/0x1e8 [...] INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000000000170e62>] check_flags+0xae/0x15c possible reason: unannotated irqs-off. lockdep is right. We missed a trace_hardirq_off in our smp_send_stop function and smp_send_stop is called before the panic call chain. Reported-by: Mijo <Safradin mijo@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] hvc_iucv: Provide IUCV z/VM user ID filteringHendrik Brueckner2009-03-26
| | | | | | | | | | This patch introduces the kernel parameter hvc_iucv_allow= that specifies a comma-separated list of z/VM user IDs. If specified, the z/VM IUCV hypervisor console device driver accepts IUCV connections from listed z/VM user IDs only. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] hvc_iucv: Update and add missing kernel messagesHendrik Brueckner2009-03-26
| | | | | | | | | If the hvc_iucv= kernel parameter specifies a value that is not valid, display an error message. Minor changes to existing kernel messages. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cputime: initialize per thread timer values on forkHeiko Carstens2009-03-26
| | | | | | | | | | Initialize per thread timer values instead of just copying them from the parent. That way it is easily possible to tell how much time a thread spent in user/system context. Doesn't fix a bug, this is just for debugging purposes. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] arch/s390/kernel/process.c: fix whitespace damageHeiko Carstens2009-03-26
| | | | | | | | Fix all the whitespace damage in process.c, especially copy_thread(). Next patch will add code to copy_thread() which needs to 'fixed' first. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] delete drivers/s390/ebcdic.cHeiko Carstens2009-03-26
| | | | | | | | Dead file. Seems to be a leftover from the 2.4->2.5 conversion. The used and uptodate version of this file is in arch/s390/kernel. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] move sysinfo.c from drivers/s390 to arch/s390/kernelHeiko Carstens2009-03-26
| | | | | | | | All in sysinfo.c is core kernel code and not driver code. So move it to arch/s390/kernel. Also includes some small cleanups. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd: message cleanupStefan Haberland2009-03-26
| | | | | | | | Moved some Messages into s390 debug feature and changed remaining messages to use the dev_xxx and pr_xxx macros. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd: add High Performance FICON supportStefan Weinhuber2009-03-26
| | | | | | | | | To support High Performance FICON, the DASD device driver has to translate I/O requests into the new transport mode control words (TCW) instead of the traditional (command mode) CCW requests. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd: add large volume supportStefan Weinhuber2009-03-26
| | | | | | | | | | | | | The dasd device driver will now support ECKD devices with more then 65520 cylinders. In the traditional ECKD adressing scheme each track is addressed by a 16-bit cylinder and 16-bit head number. The new addressing scheme makes use of the fact that the actual number of heads is never larger then 15, so 12 bits of the head number can be redefined to be part of the cylinder address. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 18:32:17 -0500