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| author | Peter Zijlstra <peterz@infradead.org> | 2021-05-10 15:01:00 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-05-12 12:43:25 +0300 |
| commit | 0cd7c741f01de13dc1eecf22557593b3514639bb (patch) | |
| tree | 9d1031e2a5e08dc9d45a6670f4d8e6171be8864c /Documentation/accounting/delay-accounting.rst | |
| parent | e4042ad492357fa995921376462b04a025dd53b6 (diff) | |
| download | linux-0cd7c741f01de13dc1eecf22557593b3514639bb.tar.xz | |
delayacct: Add sysctl to enable at runtime
Just like sched_schedstats, allow runtime enabling (and disabling) of
delayacct. This is useful if one forgot to add the delayacct boot time
option.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/YJkhebGJAywaZowX@hirez.programming.kicks-ass.net
Diffstat (limited to 'Documentation/accounting/delay-accounting.rst')
| -rw-r--r-- | Documentation/accounting/delay-accounting.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/accounting/delay-accounting.rst b/Documentation/accounting/delay-accounting.rst index f20b282d6de0..1b8b46deeb29 100644 --- a/Documentation/accounting/delay-accounting.rst +++ b/Documentation/accounting/delay-accounting.rst @@ -74,8 +74,10 @@ To enable, add:: delayacct -to the kernel boot options. The rest of the instructions -below assume this has been done. +to the kernel boot options. The rest of the instructions below assume this has +been done. Alternatively, use sysctl kernel.task_delayacct to switch the state +at runtime. Note however that only tasks started after enabling it will have +delayacct information. After the system has booted up, use a utility similar to getdelays.c to access the delays |