ion: Limit max active to 1 for the buffer freeing workers

* This is not something time critical. The load of the workqueues can sometimes be very high, especially when unbound workqueues are restricted to small cluster, bringing notable lags to userspace. Limit it with max_active = 1 to reduce the instantaneous load. * This fixes UI lags after running faceunlock on OOS. Signed-off-by: LibXZR <[email protected]> Signed-off-by: atndko <[email protected]>
0wnerDied · Oct 17, 2021 · 19c080e · 19c080e
1 parent b8b1b98
commit 19c080e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
@@ -547,7 +547,7 @@ void ion_add_heap(struct ion_device *idev, struct ion_heap *heap)
 
 	if (heap->flags & ION_HEAP_FLAG_DEFER_FREE) {
 		heap->wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM |
-					   WQ_CPU_INTENSIVE, 0, heap->name);
+					   WQ_CPU_INTENSIVE, 1, heap->name);
 		BUG_ON(!heap->wq);
 	}