GEM Scheduler

GEM Scheduler — Helpers for querying scheduler capabilities

Functions

Description

This helper library contains functions used for getting information on currently used scheduling model.

Functions

gem_scheduler_capability ()

unsigned
gem_scheduler_capability (int fd);

Parameters

fd

open i915 drm file descriptor

 

Returns

Scheduler capability bitmap.


gem_scheduler_enabled ()

bool
gem_scheduler_enabled (int fd);

Feature test macro to query whether the driver has scheduling capability.

Parameters

fd

open i915 drm file descriptor

 

gem_scheduler_has_ctx_priority ()

bool
gem_scheduler_has_ctx_priority (int fd);

Feature test macro to query whether the driver supports assigning custom priorities to contexts from userspace.

Parameters

fd

open i915 drm file descriptor

 

gem_scheduler_has_preemption ()

bool
gem_scheduler_has_preemption (int fd);

Feature test macro to query whether the driver supports preempting active (currently executing on HW) workloads.

Parameters

fd

open i915 drm file descriptor

 

gem_scheduler_has_semaphores ()

bool
gem_scheduler_has_semaphores (int fd);

Feature test macro to query whether the driver supports using HW semaphores to schedule dependencies in parallel (using the HW to delay execution until ready to reduce latency).

Parameters

fd

open i915 drm file descriptor

 

gem_scheduler_has_engine_busy_stats ()

bool
gem_scheduler_has_engine_busy_stats (int fd);

Feature test macro to query whether the driver supports reporting accurate per-engine utilisation.

Parameters

fd

open i915 drm file descriptor

 

gem_scheduler_print_capability ()

void
gem_scheduler_print_capability (int fd);

Helper for pretty-printing scheduler capability.

Parameters

fd

open i915 drm file descriptor

 

Types and Values