[SRU] [Xenial] [PATCH 00/10] Enable NVMe APST for Xenial
kai.heng.feng at canonical.com
Fri Apr 28 04:20:12 UTC 2017
NVME APST feature is not enabled, so the power consumption is higher. We
already did that for Yakkety and Zesty. After upstream adjusted a new quirk for
XPS 9550 and Precision 5510, I think it's time to make it into Xenial.
Enable NVME APST to conserve energy.
Use 'nvme get-feature -f 0x0c -H /dev/nvme0' from nvme-cli to query the feature.
Before APST enabled:
get-feature:0xc (Autonomous Power State Transition), Current value:00000000
Autonomous Power State Transition Enable (APSTE): Disabled
After APST enabled:
get-feature:0xc (Autonomous Power State Transition), Current value:0x000001
Autonomous Power State Transition Enable (APSTE): Enabled
In addition, with the new quirk, the deepest power state is disabled on Precision
5510 & Samsung NVMe. I verified this via `nvme get-feature -f 0x0c -H /dev/nvme0`.
Last two commits 'nvme: Adjust the Samsung APST quirk' and
'nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"' are from Jen Axboe's block tree.
Andy Lutomirski (7):
nvme/scsi: Remove power management support
nvme: Fix nvme_get/set_features() with a NULL result pointer
nvme: Pass pointers, not dma addresses, to nvme_get/set_features()
nvme: Add a quirk mechanism that uses identify_ctrl
nvme: Enable autonomous power state transitions
nvme: Adjust the Samsung APST quirk
nvme: Quirk APST off on "THNSF5256GPUK TOSHIBA"
Christoph Hellwig (3):
nvme: return the whole CQE through the request passthrough interface
nvme: factor out a add nvme_is_write helper
nvme: Modify and export sync command submission for fabrics
drivers/nvme/host/core.c | 284 +++++++++++++++++++++++++++++++++++++++++++----
drivers/nvme/host/nvme.h | 27 ++++-
drivers/nvme/host/pci.c | 40 +++++--
drivers/nvme/host/scsi.c | 80 +------------
include/linux/nvme.h | 6 +
5 files changed, 328 insertions(+), 109 deletions(-)
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