diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2021-02-02 14:17:54 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-02-02 14:25:11 -0600 |
| commit | b4c7d2076b4e767dd2e075a2b3a9e57753fc67f5 (patch) | |
| tree | a89a1b6f286f708d5fa97f5953e2c63e2d174db9 /drivers/pci/pcie/portdrv_pci.c | |
| parent | 7c53f6b671f4aba70ff15e1b05148b10d58c2837 (diff) | |
PCI/LINK: Remove bandwidth notification
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>
Diffstat (limited to 'drivers/pci/pcie/portdrv_pci.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 0b250bc5f405..8bd4992a4f32 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -255,7 +255,6 @@ static void __init pcie_init_services(void) pcie_pme_init(); pcie_dpc_init(); pcie_hp_init(); - pcie_bandwidth_notification_init(); } static int __init pcie_portdrv_init(void) |