linux-dev/drivers/staging/android/Kconfig, branch master

staging: remove ashmem

2022-03-15T13:25:19Z

The mainline replacement for ashmem is memfd, so remove the legacy code from drivers/staging/ Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220315123457.2354812-1-hch@lst.de Signed-off-by: Greg Kroah-Hartman

staging: ion: remove from the tree

2020-10-26T05:53:09Z

The ION android code has long been marked to be removed, now that we dma-buf support merged into the real part of the kernel. It was thought that we could wait to remove the ion kernel at a later time, but as the out-of-tree Android fork of the ion code has diverged quite a bit, and any Android device using the ion interface uses that forked version and not this in-tree version, the in-tree copy of the code is abandonded and not used by anyone. Combine this abandoned codebase with the need to make changes to it in order to keep the kernel building properly, which then causes merge issues when merging those changes into the out-of-tree Android code, and you end up with two different groups of people (the in-kernel-tree developers, and the Android kernel developers) who are both annoyed at the current situation. Because of this problem, just drop the in-kernel copy of the ion code now, as it's not used, and is only causing problems for everyone involved. Cc: "Arve Hjønnevåg" Cc: "Christian König" Cc: Christian Brauner Cc: Christoph Hellwig Cc: Hridya Valsaraju Cc: Joel Fernandes Cc: John Stultz Cc: Laura Abbott Cc: Martijn Coenen Cc: Shuah Khan Cc: Sumit Semwal Cc: Suren Baghdasaryan Cc: Todd Kjos Acked-by: Shuah Khan Link: https://lore.kernel.org/r/20200827123627.538189-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

staging: android: Delete the 'vsoc' driver

2020-02-10T16:51:12Z

The 'vsoc' driver was required for an early iteration of the Android 'cuttlefish' virtual platform, but this platform has been wholly converted to use virtio drivers instead. Delete this old driver. Cc: Greg Kroah-Hartman Cc: Joel Fernandes Cc: Greg Hartman Cc: kernel-team@android.com Cc: devel@driverdev.osuosl.org Signed-off-by: Alistair Delva Reviewed-by: Joel Fernandes (Google) Link: https://lore.kernel.org/r/20200203042254.80360-1-adelva@google.com Signed-off-by: Greg Kroah-Hartman

staging: remove redundant 'default n' from Kconfig

2019-04-16T11:39:01Z

'default n' is the default value for any bool or tristate Kconfig setting so there is no need to write it explicitly. Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") the Kconfig behavior is the same regardless of 'default n' being present or not: ... One side effect of (and the main motivation for) this change is making the following two definitions behave exactly the same: config FOO bool config FOO bool default n With this change, neither of these will generate a '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied). That might make it clearer to people that a bare 'default n' is redundant. ... Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Kconfig files

2019-04-03T09:10:15Z

There are a few remaining drivers/staging/*/Kconfig files that do not have SPDX identifiers in them. Add the correct GPL-2.0 identifier to them to make scanning tools happy. Signed-off-by: Greg Kroah-Hartman

staging: android: Kconfig; Remove excessive hyphens

2018-05-08T11:24:15Z

Fixes the following checkpatch.pl warning: "prefer 'help' over '---help---' for new help texts" Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman

staging: Android: Add 'vsoc' driver for cuttlefish.

2018-04-23T12:51:37Z

The cuttlefish system is a virtual SoC architecture based on QEMU. It uses the QEMU ivshmem feature to share memory regions between guest and host with a custom protocol. Cc: Greg Kroah-Hartman Cc: Arve Hjønnevåg Cc: Todd Kjos Cc: Martijn Coenen Cc: Dan Carpenter Cc: devel@driverdev.osuosl.org Cc: kernel-team@android.com Signed-off-by: Greg Hartman [astrachan: rebased against 4.16, added TODO, fixed checkpatch issues] Signed-off-by: Alistair Strachan Signed-off-by: Greg Kroah-Hartman

staging, android: remove lowmemory killer from the tree

2017-03-09T12:47:03Z

Lowmemory killer is sitting in the staging tree since 2008 without any serious interest for fixing issues brought up by the MM folks. The main objection is that the implementation is basically broken by design: - it hooks into slab shrinker API which is not suitable for this purpose. lowmem_count implementation just shows this nicely. There is no scaling based on the memory pressure and no feedback to the generic shrinker infrastructure. Moreover lowmem_scan is called way too often for the heavy work it performs. - it is not reclaim context aware - no NUMA and/or memcg awareness. As the code stands right now it just adds a maintenance overhead when core MM changes have to update lowmemorykiller.c as well. It also seems that the alternative LMK implementation will be solely in the userspace so this code has no perspective it seems. The staging tree is supposed to be for a code which needs to be put in shape before it can be merged which is not the case here obviously. Signed-off-by: Michal Hocko Signed-off-by: Greg Kroah-Hartman

dma-buf/sw_sync: de-stage SW_SYNC

2016-08-15T14:41:46Z

SW_SYNC allows to run tests on the sync_file framework via debugfs on /sync/sw_sync Opening and closing the file triggers creation and release of a sync timeline. To create fences on this timeline the SW_SYNC_IOC_CREATE_FENCE ioctl should be used. To increment the timeline value use SW_SYNC_IOC_INC. Also it exports Sync information on /sync/info Signed-off-by: Gustavo Padovan Reviewed-by: Eric Engestrom Signed-off-by: Greg Kroah-Hartman

staging/android: add DEBUG_FS dependence on Kconfig

2016-06-18T04:17:40Z

SW_SYNC only works with DEBUG_FS so state it in the Kconfig file. Signed-off-by: Gustavo Padovan Reviewed-by: Daniel Vetter Reviewed-by: Sumit Semwal Signed-off-by: Greg Kroah-Hartman