Patents by Inventor Yashpal Dutta

Yashpal Dutta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System for migrating stash transactions
    Patent number: 9632958
    Abstract: A system for migrating stash transactions includes first and second cores, an input/output memory management unit (IOMMU), an IOMMU mapping table, an input/output (I/O) device, a stash transaction migration management unit (STMMU), a queue manager and an operating system (OS) scheduler. The I/O device generates a first stash transaction request for a first data frame. The queue manager stores the first stash transaction request. When the first core executes a first thread, the queue manager stashes the first data frame to the first core by way of the IOMMU. The OS scheduler migrates the first thread from the first core to the second core and generates pre-empt notifiers. The STMMU uses the pre-empt notifiers to update the IOMMU mapping table and generate a stash replay command. The queue manager receives the stash replay command and stashes the first data frame to the second core.
    Type: Grant
    Filed: July 6, 2014
    Date of Patent: April 25, 2017
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Yashpal Dutta, Himanshu Goel, Varun Sethi
  • SYSTEM FOR MIGRATING STASH TRANSACTIONS
    Publication number: 20160004654
    Abstract: A system for migrating stash transactions includes first and second cores, an input/output memory management unit (IOMMU), an IOMMU mapping table, an input/output (I/O) device, a stash transaction migration management unit (STMMU), a queue manager and an operating system (OS) scheduler. The I/O device generates a first stash transaction request for a first data frame. The queue manager stores the first stash transaction request. When the first core executes a first thread, the queue manager stashes the first data frame to the first core by way of the IOMMU. The OS scheduler migrates the first thread from the first core to the second core and generates pre-empt notifiers. The STMMU uses the pre-empt notifiers to update the IOMMU mapping table and generate a stash replay command. The queue manager receives the stash replay command and stashes the first data frame to the second core.
    Type: Application
    Filed: July 6, 2014
    Publication date: January 7, 2016
    Applicant: Freescale Semiconductor, Inc.
    Inventors: Yashpal Dutta, Himanshu Goel, Varun Sethi