SYNOPSIS

struct drm_modeset_acquire_ctx {
struct ww_acquire_ctx ww_ctx;
struct drm_modeset_lock * contended;
struct list_head locked;
bool trylock_only;
};

MEMBERS

ww_ctx

base acquire ctx

contended

used internally for -EDEADLK handling

locked

list of held locks

trylock_only

trylock mode used in atomic contexts/panic notifiers

DESCRIPTION

Each thread competing for a set of locks must use one acquire ctx. And if any lock fxn returns -EDEADLK, it must backoff and retry.

AUTHORS

Jesse Barnes <[email protected]>
Intel Corporation,         
        

Initial version

Laurent Pinchart <[email protected]>
Ideas on board SPRL,         
        

Driver internals

Daniel Vetter <[email protected]>
Intel Corporation,         
        

Contributions all over the place

Lukas Wunner <[email protected]>

vga_switcheroo documentation

COPYRIGHT