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| author | Dave Airlie <airlied@redhat.com> | 2018-02-22 08:39:26 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2018-02-22 08:39:26 +1000 |
| commit | dfe8db22372873d205c78a9fd5370b1b088a2b87 (patch) | |
| tree | a2d0d68121caad20e1cd01ca9707c03d92d8adb9 /kernel/workqueue.c | |
| parent | ccffc9ebfa66e3f2cc5e17b2579202786050b32e (diff) | |
| parent | 30a3317ddc2427d173d8bcffaa3f41a61eb66560 (diff) | |
| download | linux-dfe8db22372873d205c78a9fd5370b1b088a2b87.tar.bz2 | |
Merge tag 'drm-misc-fixes-2018-02-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few
drivers, a memory leak on non-blocking commits, a crash on color-eviction.
The is also meson and edid fixes, plus a fix for a doc warning.
* tag 'drm-misc-fixes-2018-02-21' of git://anongit.freedesktop.org/drm/drm-misc:
drm/tve200: fix kernel-doc documentation comment include
drm/meson: fix vsync buffer update
drm: Handle unexpected holes in color-eviction
drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA
drm/amdgpu: Fix deadlock on runtime suspend
drm/radeon: Fix deadlock on runtime suspend
drm/nouveau: Fix deadlock on runtime suspend
drm: Allow determining if current task is output poll worker
workqueue: Allow retrieval of current task's work struct
drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 017044c26233..bb9a519cbf50 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -4180,6 +4180,22 @@ void workqueue_set_max_active(struct workqueue_struct *wq, int max_active) EXPORT_SYMBOL_GPL(workqueue_set_max_active); /** + * current_work - retrieve %current task's work struct + * + * Determine if %current task is a workqueue worker and what it's working on. + * Useful to find out the context that the %current task is running in. + * + * Return: work struct if %current task is a workqueue worker, %NULL otherwise. + */ +struct work_struct *current_work(void) +{ + struct worker *worker = current_wq_worker(); + + return worker ? worker->current_work : NULL; +} +EXPORT_SYMBOL(current_work); + +/** * current_is_workqueue_rescuer - is %current workqueue rescuer? * * Determine whether %current is a workqueue rescuer. Can be used from |