Messages in this thread | | | From | Bhaumik Bhatt <> | Subject | [PATCH v1 0/4] MHI event ring priority updates | Date | Thu, 17 Jun 2021 14:30:31 -0700 |
| |
Event ring priorities have remained out of use and are set to 1 by default. This series brings about an enum entry expanding use of the priority field by adding high priority tasklet scheduling to the menu.
In some cases, tasklet scheduling delays can be a nuisance. An example would be ath11k adding a610f3c65d3b ("bus: mhi: Wait for M2 state during system resume") in response to it. This issue can be potentially avoided if the controller uses a dedicated event ring for control packets with high priority tasklet scheduling in place.
There are no functional changes added to the controller (pci_generic or ath11k) drivers with this series and the only changes there are use of the enum in place of a harcoded value of "1". In the future, controllers can opt in to have any event ring scheduled in high priority.
Tested on: X86_64 architecture with SDX65 on Ubuntu 18.04 distribution.
Bhaumik Bhatt (3): bus: mhi: pci_generic: Use enum entry for event ring priority ath11k: Use enum entry for event ring priority bus: mhi: core: Enable support for event ring priorities
Hemant Kumar (1): bus: mhi: core: Add support for processing priority of event ring
drivers/bus/mhi/core/init.c | 3 +- drivers/bus/mhi/core/internal.h | 2 +- drivers/bus/mhi/core/main.c | 19 ++++++++-- drivers/bus/mhi/pci_generic.c | 66 +++++++++++++++++------------------ drivers/net/wireless/ath/ath11k/mhi.c | 4 +-- include/linux/mhi.h | 14 ++++++-- 6 files changed, 65 insertions(+), 43 deletions(-)
-- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
| |