From d49f86e88859c6d246f5e4c4a4a03827ce5de527 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 2 Feb 2021 14:17:54 -0600 Subject: 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 Signed-off-by: Sasha Levin --- drivers/pci/pcie/Makefile | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/pci/pcie/Makefile') 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 -- cgit v1.2.3