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path: root/drivers/staging/android/sw_sync.c
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2016-08-15dma-buf/sw_sync: de-stage SW_SYNCGustavo Padovan
SW_SYNC allows to run tests on the sync_file framework via debugfs on <debugfs>/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 <debugfs>/sync/info Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-15staging/android: add Doc for SW_SYNC ioctl interfaceGustavo Padovan
This interface is hidden from kernel headers and it is intended for use only for testing. So testers would have to add the ioctl information internally. This is to prevent misuse of this feature. v2: take in Eric suggestions for the Documentation v3: really take in Eric suggestions Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-15staging/android: prepare sw_sync files for de-stagingGustavo Padovan
remove file paths in the comments and add short description about each file. v2: remove file paths instead of just change them. v3: improve header description as sugggested by Eric Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-15staging/android: move trace/sync.h to sync_trace.hGustavo Padovan
The common behaviour for trace headers is to have them in the same folder they are used, instead of creating a special trace/ directory. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-15staging/android: do not let userspace trigger WARN_ONGustavo Padovan
Closing the timeline without waiting all fences to signal is not a critical failure, it is just bad usage from userspace so avoid calling WARN_ON in this case. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: rename sync.h to sync_debug.hGustavo Padovan
This header file only contains information for debugging and SW_SYNC, so rename it to sync_debug.h instead of having a more generic name. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove drv_name from sync_timelineGustavo Padovan
As it is internal to sw_sync now this value will always be "sw_sync". Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove sync_timeline_destroy()Gustavo Padovan
This function was just used by the file release function, so we just fold its content there and remove sync_timeline_destroy(). Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove 'destroyed' member from struct sync_timelineGustavo Padovan
'destroyed' was set but not used ny anyone. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: make sw_ioctl info internal to sw_sync.cGustavo Padovan
We don't want to export this from the kernel. This is interface is only for testing and debug. So testers shall copy the ioctl info in their own projects. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: make sync_timeline internal to sw_syncGustavo Padovan
The only use sync_timeline will have in upstream kernel is for debugging through the SW_SYNC interface. So make it internal to SW_SYNC to avoid people use it in the future. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: move sw_sync related code to sw_sync.cGustavo Padovan
Split sync_debug and sw_sync in two different files. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove sw_sync.[ch] filesGustavo Padovan
We can glue the sw_sync file operations directly on the sync framework without the need to pass through sw_sync wrappers. It only builds sw_sync debugfs file support if CONFIG_SW_SYNC is enabled. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove sw_sync_timeline and sw_sync_ptGustavo Padovan
As we moved value storage to sync_timeline and fence those two structs became useless and can be removed now. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove struct sync_timeline_opsGustavo Padovan
Move drv_name, the last field of sync_timeline_ops, to sync_timeline and remove sync_timeline_ops. struct sync_timeline_ops was just an extra abstraction on top of fence_ops, and in the last few commits we removed all it ops in favor of cleaner fence_ops. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: remove .{fence, timeline}_value_str() from timeline_opsGustavo Padovan
Now that the value of fence and the timeline are not stored by sw_sync anymore we can remove this extra abstraction to retrieve this data. This patch changes both fence_ops (.fence_value_str and .timeline_value_str) to return the str directly. It also clean up struct sync_timeline_ops by removing both ops from there. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-18staging/android: store last signaled value on sync timelineGustavo Padovan
Now fence timeline is aware of the last signaled fence, as it receives the increment to the current value in sync_timeline_signal(). That allow us to remove .has_signaled() from timeline_ops as we can directly compare using timeline->value and fence->seqno in sync.c Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-08staging/android: remove driver_data from struct sync_fence_infoGustavo Padovan
It is unclear in what situations driver_data should be used thus better do not upstream it for now. If a need arises in the future a discussion can be started to re-add it. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-08staging/android: remove struct sync_ptGustavo Padovan
struct sync_pt was just wrapping around struct fence and creating an extra abstraction layer. The only two members of struct sync_pt, child_list and active_list, were moved to struct fence in an earlier commit. After removing those two members struct sync_pt is nothing more than struct fence, so remove it all and use struct fence directly. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-08staging/android: move SW_SYNC_USER to a debugfs fileGustavo Padovan
This remove CONFIG_SW_SYNC_USER and instead compile the sw_sync file into debugpfs under <debugfs>/sync/sw_sync. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-08staging/android: remove not used sync_timeline opsGustavo Padovan
.dup and .compare are not used by the sync framework, so remove them from sw_sync. Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-13drivers/staging: make android sw_sync.c explicitly non-modularPaul Gortmaker
The Kconfig currently controlling compilation of this code is: staging/android/Kconfig:config SW_SYNC staging/android/Kconfig: bool "Software synchronization objects" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: "Arve Hjønnevåg" <arve@android.com> Cc: Riley Andrews <riandrews@android.com> Cc: devel@driverdev.osuosl.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-13staging: android: fix coding style checks in sw_sync.cTrung Thanh Le
replace comparison "obj" to NULL with "!obj" Signed-off-by: Trung Thanh Le <trungthanh1608@yahoo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-19staging: android: sw_sync: checkpatch fixesPurnendu Kapadia
- no space after cast - allignment should match open parenthesis - remove unnecessary new line Signed-off-by: Purnendu Kapadia <pro8linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-08-16Staging: android: sw_sync.c: Fixed coding style issue.Yee Chin, Chiam
Fixed coding style issue where blank line is missing after declaration. Signed-off-by: Yee Chin, Chiam <phathetique@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-07-08android: convert sync to fence api, v6Maarten Lankhorst
Just to show it's easy. Android syncpoints can be mapped to a timeline. This removes the need to maintain a separate api for synchronization. I've left the android trace events in place, but the core fence events should already be sufficient for debugging. v2: - Call fence_remove_callback in sync_fence_free if not all fences have fired. v3: - Merge Colin Cross' bugfixes, and the android fence merge optimization. v4: - Merge with the upstream fixes. v5: - Fix small style issues pointed out by Thomas Hellstrom. v6: - Fix for updates to fence api. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Acked-by: John Stultz <john.stultz@linaro.org> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-03staging: android: fix missing a blank line after declarationsSeunghun Lee
This patch fixes "Missing a blank line after declarations" warnings. Signed-off-by: Seunghun Lee <waydi1@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-16android/sw_sync: use get_unused_fd_flags(O_CLOEXEC) instead of get_unused_fd()Yann Droneaud
Macro get_unused_fd() is used to allocate a file descriptor with default flags. Those default flags (0) can be "unsafe": O_CLOEXEC must be used by default to not leak file descriptor across exec(). Instead of macro get_unused_fd(), functions anon_inode_getfd() or get_unused_fd_flags() should be used with flags given by userspace. If not possible, flags should be set to O_CLOEXEC to provide userspace with a default safe behavor. In a further patch, get_unused_fd() will be removed so that new code start using anon_inode_getfd() or get_unused_fd_flags() with correct flags. This patch replaces calls to get_unused_fd() with call to get_unused_fd_flags(O_CLOEXEC) following advice from Erik Gilling. Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Cc: Erik Gilling <konkers@android.com> Cc: Colin Cross <ccross@google.com> Link: http://lkml.kernel.org/r/CACSP8SjZcpcpEtQHzcGYhf-MP7QGo0XpN7-uN7rmD=vNtopG=w@mail.gmail.com Link: http://lkml.kernel.org/r/cover.1376327678.git.ydroneaud@opteya.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-20staging: Fix lines over 80 chars in android sw_syncMarlies Ruck
Fixes the following checkpatch warning: WARNING: Line over 80 characters Signed-off-by: Marlies Ruck <marlies.ruck@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-29staging: sync: Add compat_ioctl handlers to sync driversDmitry Pervushin
The sync drivers are missing compat_ioctl handlers, so this patch adds them. The same change has been submitted to AOSP: https://android-review.googlesource.com/#/c/54901/ Change-Id: If1a1ecc3952b321c8d64c6a8b050104859efc4b1 Cc: Erik Gilling <konkers@android.com> Cc: Dmitry Pervushin <dmitry.pervushin@linaro.org> Cc: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Dmitry Pervushin <dmitry.pervushin@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-11staging: sw_sync: sw_sync_timeline_ops can be staticChanglong Xie
Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Changlong Xie <changlongx.xie@intel.com> Acked-by: Erik Gilling <konkers@android.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Convert to use new value_str debug opsErik Gilling
Switch from print_obj/print_pt to the new timeline_value_str and pt_value_str ops. Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Erik Gilling <konkers@android.com> [jstultz: Add commit message] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Fix error pathsRebecca Schultz Zavin
Check the return value of get_unused_fd to make sure a valid file descriptor is returned. Make sure to call put_unused_fd even if an error occurs before the fd can be used. Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Export sw_sync APIErik Gilling
Needed to let modules link against sw_sync. Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Erik Gilling <konkers@android.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Add fill_driver_data supportErik Gilling
Add fill_driver_data support to export fence data to ioctl Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Erik Gilling <konkers@android.com> [jstultz: Add commit message] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Add debug supportErik Gilling
Add debugfs support hooks. Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Erik Gilling <konkers@android.com> [jstultz: Add commit message] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-04staging: sw_sync: Add cpu based sync driverErik Gilling
Adds a base sync driver that uses the cpu for serialization. Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: Erik Gilling <konkers@android.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Rob Clark <robclark@gmail.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Erik Gilling <konkers@android.com> [jstultz: Add commit message, whitespace fixes and move to staging directory] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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