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| author | Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com> | 2026-05-19 13:41:23 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-05-23 06:54:25 -0500 |
| commit | 748a927e081bffc9a9be17b4d96088515e1c5f01 (patch) | |
| tree | 8c0a6c35844184f3c9ae53387c1b217607524be8 /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | ced835ae1f62c5a316a4229dde5762c63d0ac27b (diff) | |
nvme-pci: Use pci_suspend_retains_context() during suspend
pci_suspend_retains_context() lets PCI client drivers know if the platform
can retain the device context during suspend. This is decided based on
several factors like:
- Firmware involvement at the end of suspend
- Any platform limitation in waking from low power state (e.g., L1SS)
This API may be extended in the future to cover other platform specific
issues impacting the device low power mode during system suspend.
Use this API instead of checks like pm_suspend_via_firmware(). When
pci_suspend_retains_context() returns false, assume the platform cannot
retain the context and shutdown the controller. If it returns true, assume
that the context will be retained and keep the device in low power mode.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260519-l1ss-fix-v2-4-b2c3a4bdeb15@oss.qualcomm.com
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions