linux-dev/drivers/s390/cio/cio.c, branch linus/master

s390: add struct tpi_info to struct pt_regs

2021-06-07T15:07:01Z

To avoid casting ptrace members, add a union containing both struct tpi_info and explicit int_code/int_parm members. Signed-off-by: Sven Schnelle Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/irq: replace setup_irq() by request_irq()

2020-03-11T13:18:44Z

request_irq() is preferred over setup_irq(). Invocations of setup_irq() occur after memory allocators are ready. Per tglx[1], setup_irq() existed in olden days when allocators were not ready by the time early interrupts were initialized. Hence replace setup_irq() by request_irq(). [1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos Signed-off-by: afzal mohammed Message-Id: <20200304005049.5291-1-afzal.mohd.ma@gmail.com> [heiko.carstens@de.ibm.com: replace pr_err with panic] Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390: show statistics for MSI IRQs

2019-04-29T08:47:01Z

Improve /proc/interrupts on s390 to show statistics for individual MSI interrupts. Signed-off-by: Sebastian Ott Acked-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/css: reduce stsch calls

2018-07-17T05:27:55Z

Both css_evaluate_new_subchannel and cio_validate_subchannel used stsch and css_sch_is_valid to check for a valid device. Reduce stsch calls during subchannel evaluation by re-using schib data. Also the type/devno valid information is only checked once. Signed-off-by: Sebastian Ott Reviewed-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky

s390/css: validate subchannel prior to allocation

2018-07-17T05:27:54Z

In css_alloc_subchannel we allocate the subchannel and do a validation of the subchannel (to decide if we should look for devices via this subchannel). On a typical LPAR we find lots of subchannels to be invalid (because there is no device attached or the device is blacklisted) leading to lots of useless kmalloc and kfree calls. This patch changes the order to only allocate the subchannels that have been found valid. Signed-off-by: Sebastian Ott Reviewed-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky

s390: assume diag308 set always works

2018-04-10T05:38:59Z

diag308 set has been available for many machine generations, and alternative reipl code paths has not been exercised and seems to be broken without noticing for a while now. So, cleaning up all obsolete reipl methods except currently used ones, assuming that diag308 set always works. Also removing not longer needed reset callbacks. Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky

s390/ipl: rely on diag308 store to get ipl info

2018-04-10T05:38:59Z

For both ccw and fcp boot retrieve ipl info from ipl block received via diag308 store. Old scsi ipl parm block handling and cio_get_iplinfo are removed. Ipl type is deducted from ipl block (if valid). Reviewed-by: Heiko Carstens Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky

s390/cio: fix kernel-doc usage

2018-02-05T06:34:52Z

Fix the kernel-doc usage in cio to get rid of (W=1) build warnings like: drivers/s390/cio/cio.c:1068: warning: No description found for parameter 'sch' Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390: cio: add SPDX identifiers to the remaining files

2017-11-24T13:28:41Z

It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/s390/cio/ files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Sebastian Ott Cc: Peter Oberparleiter Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Cornelia Huck Cc: Dong Jia Shi Cc: Thomas Gleixner Cc: Kate Stewart Cc: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: cio: export more interfaces

2017-03-31T10:55:03Z

Export the common I/O interfaces those are needed by an I/O subchannel driver to actually talk to the subchannel. Reviewed-by: Pierre Morel Signed-off-by: Dong Jia Shi Cc: Sebastian Ott Cc: Peter Oberparleiter Acked-by: Sebastian Ott Message-Id: <20170317031743.40128-3-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck