/**
* @brief Decide whether a split in core affinity is required across job slots
*
* The following locking conditions are made on the caller:
* - it must hold kbasep_js_device_data::runpool_irq::lock
*
* @param kbdev The kbase device structure of the device
* @return MALI_FALSE if a core split is not required
* @return != MALI_FALSE if a core split is required.
*/
STATIC INLINE mali_bool kbase_affinity_requires_split(kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
lockdep_assert_held(&kbdev->js_data.runpool_irq.lock);
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8987)) {
s8 nr_compute_ctxs = kbasep_js_ctx_attr_count_on_runpool(kbdev, KBASEP_JS_CTX_ATTR_COMPUTE);
s8 nr_noncompute_ctxs = kbasep_js_ctx_attr_count_on_runpool(kbdev, KBASEP_JS_CTX_ATTR_NON_COMPUTE);
/* In this case, a mix of Compute+Non-Compute determines whether a
* core-split is required, to ensure jobs with different numbers of RMUs
* don't use the same cores.
*
* When it's entirely compute, or entirely non-compute, then no split is
* required.
*
* A context can be both Compute and Non-compute, in which case this will
* correctly decide that a core-split is required. */
return (mali_bool) (nr_compute_ctxs > 0 && nr_noncompute_ctxs > 0);
}
return MALI_FALSE;
}
/*
* Hold the runpool_mutex for this
*/
static inline bool timer_callback_should_run(struct kbase_device *kbdev)
{
struct kbase_backend_data *backend = &kbdev->hwaccess.backend;
s8 nr_running_ctxs;
lockdep_assert_held(&kbdev->js_data.runpool_mutex);
/* Timer must stop if we are suspending */
if (backend->suspend_timer)
return false;
/* nr_contexts_pullable is updated with the runpool_mutex. However, the
* locking in the caller gives us a barrier that ensures
* nr_contexts_pullable is up-to-date for reading */
nr_running_ctxs = atomic_read(&kbdev->js_data.nr_contexts_runnable);
#ifdef CONFIG_MALI_DEBUG
if (kbdev->js_data.softstop_always) {
/* Debug support for allowing soft-stop on a single context */
return true;
}
#endif /* CONFIG_MALI_DEBUG */
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_9435)) {
/* Timeouts would have to be 4x longer (due to micro-
* architectural design) to support OpenCL conformance tests, so
* only run the timer when there's:
* - 2 or more CL contexts
* - 1 or more GLES contexts
*
* NOTE: We will treat a context that has both Compute and Non-
* Compute jobs will be treated as an OpenCL context (hence, we
* don't check KBASEP_JS_CTX_ATTR_NON_COMPUTE).
*/
{
s8 nr_compute_ctxs =
kbasep_js_ctx_attr_count_on_runpool(kbdev,
KBASEP_JS_CTX_ATTR_COMPUTE);
s8 nr_noncompute_ctxs = nr_running_ctxs -
nr_compute_ctxs;
return (bool) (nr_compute_ctxs >= 2 ||
nr_noncompute_ctxs > 0);
}
} else {
/* Run the timer callback whenever you have at least 1 context
*/
return (bool) (nr_running_ctxs > 0);
}
}
