lkml.org 
[lkml]   [2021]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    Subject[PATCH v3 0/1] Add software TX timestamps to the CAN devices
    Date
    With the ongoing work to add BQL to Socket CAN, I figured out that it
    would be nice to have an easy way to mesure the latency.

    And one easy way to do so it to check the round trip time of the
    packet by doing the difference between the software rx timestamp and
    the software tx timestamp.

    rx timestamps are already available. This patch gives the missing
    piece: add a tx software timestamp feature to the CAN devices.

    Of course, the tx software timestamp might also be used for other
    purposes such as performance measurements of the different queuing
    disciplines (e.g. by checking the difference between the kernel tx
    software timestamp and the userland tx software timestamp).

    v2 was a mistake, please ignore it (fogot to do git add, changes were
    not reflected...)

    v3 reflects the comments that Jeroen made in
    https://lkml.org/lkml/2021/1/10/54

    Vincent Mailhol (1):
    can: dev: add software tx timestamps

    drivers/net/can/dev.c | 1 +
    1 file changed, 1 insertion(+)

    --
    2.26.2

    \
     
     \ /
      Last update: 2021-01-10 13:52    [W:3.950 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site