diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2021-02-02 14:17:54 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-17 17:06:24 +0100 |
| commit | d49f86e88859c6d246f5e4c4a4a03827ce5de527 (patch) | |
| tree | 6a8fe25b2b51666c8ab6b3ebebc39209979a2229 /drivers/pci/pcie/Makefile | |
| parent | 732bb21397ee6a7ecafc2c084e405f8c4c45f81a (diff) | |
PCI/LINK: Remove bandwidth notification
[ Upstream commit b4c7d2076b4e767dd2e075a2b3a9e57753fc67f5 ]
The PCIe Bandwidth Change Notification feature logs messages when the link
bandwidth changes. Some users have reported that these messages occur
often enough to significantly reduce NVMe performance. GPUs also seem to
generate these messages.
We don't know why the link bandwidth changes, but in the reported cases
there's no indication that it's caused by hardware failures.
Remove the bandwidth change notifications for now. Hopefully we can add
this back when we have a better understanding of why this happens and how
we can make the messages useful instead of overwhelming.
Link: https://lore.kernel.org/r/20200115221008.GA191037@google.com/
Link: https://lore.kernel.org/r/155605909349.3575.13433421148215616375.stgit@gimli.home/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206197
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pci/pcie/Makefile')
| -rw-r--r-- | drivers/pci/pcie/Makefile | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/pci/pcie/Makefile b/drivers/pci/pcie/Makefile index 68da9280ff11..9a7085668466 100644 --- a/drivers/pci/pcie/Makefile +++ b/drivers/pci/pcie/Makefile @@ -12,5 +12,4 @@ obj-$(CONFIG_PCIEAER_INJECT) += aer_inject.o obj-$(CONFIG_PCIE_PME) += pme.o obj-$(CONFIG_PCIE_DPC) += dpc.o obj-$(CONFIG_PCIE_PTM) += ptm.o -obj-$(CONFIG_PCIE_BW) += bw_notification.o obj-$(CONFIG_PCIE_EDR) += edr.o |