Chris Wilson 7e13ad8964 drm: Avoid drm_global_mutex for simple inc/dec of dev->open_count ... Since drm_global_mutex is a true global mutex across devices, we don't want to acquire it unless absolutely necessary. For maintaining the device local open_count, we can use atomic operations on the counter itself, except when making the transition to/from 0. Here, we tackle the easy portion of delaying acquiring the drm_global_mutex for the final release by using atomic_dec_and_mutex_lock(), leaving the global serialisation across the device opens. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Thomas Hellström (VMware) <thomas_os@shipmail.org> Reviewed-by: Thomas Hellström <thellstrom@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200124130107.125404-1-chris@chris-wilson.co.uk		2020-01-24 17:41:34 +00:00
..
dispnv04	Merge drm/drm-next into drm-misc-next	2019-10-03 16:38:50 +02:00
dispnv50	drm-misc-next for v5.6:	2019-12-17 13:57:54 +01:00
include	drm/nouveau/gpio: check function 76 in the power check as well	2019-08-23 12:55:34 +10:00
nvif	drm/nouveau/mmu: use struct_size() helper	2019-08-23 12:55:31 +10:00
nvkm	drm main pull for 5.4-rc1	2019-09-19 16:24:24 -07:00
Kbuild	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:51 +10:00
Kconfig	drm/nouveau: Fix Kconfig indentation	2019-11-20 17:40:32 +01:00
nouveau_abi16.c	drm/nouveau: remove open-coded drm_invalid_op()	2019-08-07 11:52:08 -04:00
nouveau_abi16.h	drm/nouveau: remove open-coded drm_invalid_op()	2019-08-07 11:52:08 -04:00
nouveau_acpi.c	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_acpi.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_backlight.c
nouveau_bios.c	drm/nouveau/bios: downgrade absence of tmds table to info from an error	2019-08-23 12:55:31 +10:00
nouveau_bios.h
nouveau_bo.c	drm/ttm: nuke invalidate_caches callback	2020-01-16 16:35:07 +01:00
nouveau_bo.h	drm/nouveau: Fix fallout from reservation object rework	2019-09-17 14:50:15 +10:00
nouveau_chan.c	drm/nouveau/svm: initial support for shared virtual memory	2019-02-20 09:00:02 +10:00
nouveau_chan.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_connector.c	drm/nouveau: Fix drm-core using atomic code-paths on pre-nv50 hardware	2019-12-10 21:34:52 +10:00
nouveau_connector.h	drm/nouveau: Fix drm-core using atomic code-paths on pre-nv50 hardware	2019-12-10 21:34:52 +10:00
nouveau_crtc.h	drm/nouveau: drop drmP.h from all header files	2019-08-23 12:55:30 +10:00
nouveau_debugfs.c	drm/nouveau/debugfs: Fix check of pm_runtime_get_sync failure	2019-03-22 09:57:58 +10:00
nouveau_debugfs.h	drm/nouveau: drop drmP.h from all header files	2019-08-23 12:55:30 +10:00
nouveau_display.c	drm/nouveau: Resume hotplug interrupts earlier	2019-10-24 14:28:06 -04:00
nouveau_display.h	drm/nouveau: drop drmP.h from nouveau_drv.h	2019-08-23 12:55:30 +10:00
nouveau_dma.c	drm/nouveau: drop use of DRM_UDELAY	2019-08-23 12:55:30 +10:00
nouveau_dma.h
nouveau_dmem.c	mm: remove the unused MIGRATE_PFN_DEVICE flag	2019-08-20 09:35:03 -03:00
nouveau_dmem.h	nouveau: remove a few function stubs	2019-08-20 09:35:03 -03:00
nouveau_dp.c	drm/nouveau: drop use of drmp.h	2019-08-23 12:55:31 +10:00
nouveau_drm.c	hmm related patches for 5.4	2019-09-21 10:07:42 -07:00
nouveau_drv.h	drm/nouveau: use drm_debug_enabled() to check for debug categories	2019-11-14 14:08:38 +02:00
nouveau_encoder.h
nouveau_fbcon.c	drm: constify fb ops across all drivers	2019-12-05 10:57:42 +02:00
nouveau_fbcon.h	drm/nouveau: Use drm_fb_helper_fill_info	2019-03-27 10:03:16 +01:00
nouveau_fence.c	drm/nouveau: drop use of drmp.h	2019-08-23 12:55:31 +10:00
nouveau_fence.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_gem.c	drm/nouveau: slowpath for pushbuf ioctl	2019-11-06 11:23:27 +01:00
nouveau_gem.h	drm/nouveau: drop drmP.h from all header files	2019-08-23 12:55:30 +10:00
nouveau_hwmon.c	drm/nouveau: drop use of drmp.h	2019-08-23 12:55:31 +10:00
nouveau_hwmon.h
nouveau_ioc32.c	drm/nouveau: drop use of drmp.h	2019-08-23 12:55:31 +10:00
nouveau_ioctl.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_led.c
nouveau_led.h
nouveau_mem.c
nouveau_mem.h
nouveau_nvif.c
nouveau_platform.c
nouveau_platform.h
nouveau_prime.c	drm/nouveau/prime: Extend DMA reservation object lock	2019-09-17 14:50:15 +10:00
nouveau_reg.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_sgdma.c	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_svm.c	nouveau: use mmu_interval_notifier instead of hmm_mirror	2019-11-23 19:56:44 -04:00
nouveau_svm.h	drm/nouveau/svm: new ioctl to migrate process memory to GPU memory	2019-02-20 09:00:03 +10:00
nouveau_ttm.c	drm/nouveau: switch to gem vma offset manager	2019-09-11 08:03:23 +02:00
nouveau_ttm.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_usif.c
nouveau_usif.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_vga.c	drm: Avoid drm_global_mutex for simple inc/dec of dev->open_count	2020-01-24 17:41:34 +00:00
nouveau_vga.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nouveau_vmm.c	drm/nouveau/svm: initial support for shared virtual memory	2019-02-20 09:00:02 +10:00
nouveau_vmm.h	drm/nouveau/svm: initial support for shared virtual memory	2019-02-20 09:00:02 +10:00
nv04_fbcon.c
nv04_fence.c
nv10_fence.c
nv10_fence.h	drm/nouveau: fix bogus GPL-2 license header	2019-07-19 16:26:50 +10:00
nv17_fence.c
nv50_display.h
nv50_fbcon.c
nv50_fence.c
nv84_fence.c	drm/nouveau: prepare for enabling svm with existing userspace interfaces	2019-02-20 09:00:01 +10:00
nvc0_fbcon.c
nvc0_fence.c