[PATCH v2 3/3] vstatus: Display an informational message when the VSTATUS character is pressed or TIOCSTAT ioctl is called.
Jiri Slaby
jirislaby at kernel.org
Mon Feb 7 16:38:16 AEDT 2022
On 06. 02. 22, 16:48, Walt Drummond wrote:
> When triggered by pressing the VSTATUS key or calling the TIOCSTAT
> ioctl, the n_tty line discipline will display a message on the user's
> tty that provides basic information about the system and an
> 'interesting' process in the current foreground process group, eg:
>
> load: 0.58 cmd: sleep 744474 [sleeping] 0.36r 0.00u 0.00s 0% 772k
>
> The status message provides:
> - System load average
> - Command name and process id (from the perspective of the session)
> - Scheduler state
> - Total wall-clock run time
> - User space run time
> - System space run time
> - Percentage of on-cpu time
> - Resident set size
>
> The message is only displayed when the tty has the VSTATUS character
> set, the local flags ICANON and IEXTEN are enabled and NOKERNINFO is
> disabled; it is always displayed when TIOCSTAT is called regardless of
> tty settings.
>
> Signed-off-by: Walt Drummond <walt at drummond.us>
> ---
It looks like my comments were addressed. However you did not document
the chances since v1 here. IOW, [v2] tag missing here.
And please add the CCs I added last time, so that relevant people still
can comment.
thanks,
--
js
suse labs
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