DuDu371/linux-rockchip
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

delayacct: Default disabled

Browse source 
Assuming this stuff isn't actually used much; disable it by default
and avoid allocating and tracking the task_delay_info structure.

taskstats is changed to still report the regular sched and sched_info
and only skip the missing task_delay_info fields instead of not
reporting anything.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210505111525.308018373@infradead.org
This commit is contained in:
Peter Zijlstra 2021-05-04 22:43:32 +02:00
parent eee4d9fee2
commit e4042ad492
4 changed files with 20 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Documentation/accounting/delay-accounting.rst
View file

@ -69,13 +69,13 @@ Compile the kernel with::
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASKSTATS=y
Delay accounting is enabled by default at boot up.
To disable, add::
Delay accounting is disabled by default at boot up.
To enable, add::
nodelayacct
delayacct
to the kernel boot options. The rest of the instructions
below assume this has not been done.
below assume this has been done.
After the system has booted up, use a utility
similar to getdelays.c to access the delays