Messages in this thread | | | Subject | Re: [PATCH v6 8/9] net/mlx5: Do not call pcie_print_link_status() | From | Tal Gilboa <> | Date | Wed, 8 Aug 2018 18:56:29 +0300 |
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On 8/8/2018 6:41 PM, Leon Romanovsky wrote: > On Wed, Aug 08, 2018 at 05:23:12PM +0300, Tal Gilboa wrote: >> On 8/8/2018 9:08 AM, Leon Romanovsky wrote: >>> On Mon, Aug 06, 2018 at 06:25:42PM -0500, Alexandru Gagniuc wrote: >>>> This is now done by the PCI core to warn of sub-optimal bandwidth. >>>> >>>> Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> >>>> --- >>>> drivers/net/ethernet/mellanox/mlx5/core/main.c | 4 ---- >>>> 1 file changed, 4 deletions(-) >>>> >>> >>> Thanks, >>> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> >>> >> >> Alex, >> I loaded mlx5 driver with and without these series. The report in dmesg is >> now missing. From what I understood, the status should be reported at least >> once, even if everything is in order. > > It is not what this series is doing and it removes prints completely if > fabric can deliver more than card is capable. > >> We need this functionality to stay. > > I'm not sure that you need this information in driver's dmesg output, > but most probably something globally visible and accessible per-pci > device.
Currently we have users that look for it. If we remove the dmesg print we need this to be reported elsewhere. Adding it to sysfs for example should be a valid solution for our case.
> >> >> net-next (dmesg output for 07:00.0): >> [270498.625351] mlx5_core 0000:07:00.0: firmware version: 14.22.4020 >> [270498.632130] mlx5_core 0000:07:00.0: 63.008 Gb/s available PCIe bandwidth >> (8 GT/s x8 link) >> [270499.169533] (0000:07:00.0): E-Switch: Total vports 9, per vport: max >> uc(1024) max mc(16384) >> [270499.182358] mlx5_core 0000:07:00.0: Port module event: module 0, Cable >> plugged >> >> net-next + patches (dmesg output for 07:00.0): >> [ 331.608472] mlx5_core 0000:07:00.0: firmware version: 14.22.4020 >> [ 332.564938] (0000:07:00.0): E-Switch: Total vports 9, per vport: max >> uc(1024) max mc(16384) >> [ 332.616271] mlx5_core 0000:07:00.0: Port module event: module 0, Cable >> plugged >> >>
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