公开(公告)号：US10055259B2

公开(公告)日：2018-08-21

申请号：US14967387

申请日：2015-12-14

Applicant: MEDIATEK INC.

Inventor： Tzu-Jen Lo ,  Yu-Ming Lin ,  Jia-Ming Chen ,  Ya-Ting Chang ,  Nicholas Ching Hui Tang ,  Yin Chen ,  Hung-Lin Chou

IPC: G06F9/46 ,  G06F9/50

CPC classification number: G06F9/505 ,  G06F9/46

Abstract: A method for performing processor resource allocation in an electronic device is provided, where the method may include the steps of: obtaining task-related information to determine whether a task of a plurality of tasks is a heavy task (e.g. the heavy task may correspond to heavier loading than others of the plurality of tasks), to selectively utilize a specific processor core within a plurality of processor cores to perform the task, and determining whether at least one scenario task exists within others of the plurality of tasks, to selectively determine according to application requirements a minimum processor core count and a minimum operating frequency for performing the at least one scenario task; and performing processor resource allocation according to a power table and system loading, to perform any remaining portion of the plurality of tasks. An apparatus for performing processor resource allocation according to the above method is provided.

公开(公告)号：US10031573B2

公开(公告)日：2018-07-24

申请号：US14931923

申请日：2015-11-04

Applicant: MediaTek Inc.

Inventor： Jia-Ming Chen ,  Hung-Lin Chou ,  Pi-Cheng Hsiao ,  Ya-Ting Chang ,  Yun-Ching Li ,  Yu-Ming Lin

IPC: G06F9/46 ,  G06F1/32 ,  G06F9/50

CPC classification number: G06F1/3287 ,  G06F1/3206 ,  G06F1/324 ,  G06F9/4812 ,  G06F9/5088 ,  G06F9/5094 ,  Y02D10/126 ,  Y02D10/171 ,  Y02D50/20

Abstract: Energy efficiency is managed in a multi-cluster system. The system detects an event in which a current operating frequency of an active cluster enters or crosses any of one or more predetermined frequency spots of the active cluster, wherein the active cluster includes one or more first processor cores. When the event is detected, the system performs the following steps: (1) identifying a target cluster including one or more second processor cores, wherein the each first processor core in the first cluster and each second processor core in the second cluster have different energy efficiency characteristics; (2) activating at least one second processor core in the second cluster; (3) determining whether to migrate one or more interrupt requests from the first cluster to the second cluster; and (4) determining whether to deactivate at least one first processor core of the active cluster based on a performance and power requirement.

公开(公告)号：US20170160962A1

公开(公告)日：2017-06-08

申请号：US15363181

申请日：2016-11-29

Applicant: MediaTek Inc.

Inventor： Shih-Yen Chiu ,  Wan-Ching Huang ,  Chung-Ho Chang ,  Ya-Ting Chang ,  Ming-Ju Wu ,  Nicholas Ching Hui Tang

IPC: G06F3/06

CPC classification number: G06F9/5077 ,  G06F9/455

Abstract: A multicore processor system includes multiple processor cores. When a processor core goes offline, the offline processor core is mapped to a mapped processor core, which is selected from an emulated processor core and one or more online processor cores among the multiple processor cores. The emulated processor core is a software construct containing an emulated state of the offline processor core. When the multicore processor system receives a system call that is sent from a requestor to the offline processor core to request for system information from the offline processor core, the system call is re-directed to the mapped processor core. The system information is returned from the mapped processor core to the requestor in response to the system call.

公开(公告)号：US20150121388A1

公开(公告)日：2015-04-30

申请号：US14516566

申请日：2014-10-16

Applicant: MEDIATEK INC.

Inventor： Ya-Ting Chang ,  Jia-Ming Chen ,  Yu-Ming Lin ,  Yin Chen ,  Hung-Lin Chou ,  Yeh-Ji Chou ,  Shou-Wen Ho

IPC: G06F9/48 ,  G06F9/54

CPC classification number: G06F9/4881 ,  G06F9/52 ,  G06F2209/483 ,  G06F2209/501

Abstract: A task scheduling method is applied to a heterogeneous multi-core processor system. The heterogeneous multi-core processor system has at least one first processor core and at least one second processor core. The task scheduling method includes: referring to task priorities of tasks of the heterogeneous processor cores to identify at least one first task of the tasks that belongs to a first priority task group, wherein each first task belonging to the first priority task group has a task priority not lower than task priorities of other tasks not belonging to the first priority task group; and dispatching at least one of the at least one first task to at least one run queue of at least one of the at least one first processor core.

Abstract translation: 任务调度方法应用于异构多​​核处理器系统。 异构多核处理器系统具有至少一个第一处理器核心和至少一个第二处理器核心。 任务调度方法包括：参考异构处理器核的任务的任务优先级，以识别属于第一优先级任务组的任务的至少一个第一任务，其中属于第一优先级任务组的每个第一任务具有任务 优先级不低于不属于第一优先级任务组的其他任务的任务优先级; 以及将所述至少一个第一任务中的至少一个调度到所述至少一个第一处理器核心中的至少一个的至少一个运行队列。