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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2020-05-06 01:34:21 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-05-07 16:39:44 -0500 |
| commit | 66ff14e59e8a30690755b08bc3042359703fb07a (patch) | |
| tree | c8cdf508573002279c8a5406e0eb2b02665d7c0f /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff) | |
PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
7d715a6c1ae5 ("PCI: add PCI Express ASPM support") added the ability for
Linux to enable ASPM, but for some undocumented reason, it didn't enable
ASPM on links where the downstream component is a PCIe-to-PCI/PCI-X Bridge.
Remove this exclusion so we can enable ASPM on these links.
The Dell OptiPlex 7080 mentioned in the bugzilla has a TI XIO2001
PCIe-to-PCI Bridge. Enabling ASPM on the link leading to it allows the
Intel SoC to enter deeper Package C-states, which is a significant power
savings.
[bhelgaas: commit log]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207571
Link: https://lore.kernel.org/r/20200505173423.26968-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions