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
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drm	drm: Avoid drm_global_mutex for simple inc/dec of dev->open_count	2020-01-24 17:41:34 +00:00
host1x	drm-misc-next for v5.6:	2019-12-17 13:57:54 +01:00
ipu-v3
vga	vga: Fix Kconfig indentation	2019-11-20 17:40:32 +01:00
Makefile