diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2021-11-23 07:55:18 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2021-12-08 03:36:18 +0300 |
| commit | 82e310033d7c21a7a88427f14e0dad78d731a5cd (patch) | |
| tree | 3f5a3826131b131ee32914a6875b096a19e9d6a2 /Documentation/admin-guide | |
| parent | 12e885433dbc2e8098cfb62c68f731b18981f3f6 (diff) | |
| download | linux-82e310033d7c21a7a88427f14e0dad78d731a5cd.tar.xz | |
rcutorture: Enable multiple concurrent callback-flood kthreads
This commit converts the rcutorture.fwd_progress module parameter from
bool to int, so that it specifies the number of callback-flood kthreads.
Values less than zero specify one kthread per CPU, however, the number of
kthreads executing concurrently is limited to the number of online CPUs.
This commit also reverse the order of the need-resched and callback-flood
operations to cause the callback flooding to happen more nearly at the
same time.
Cc: Neeraj Upadhyay <neeraj.iitr10@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 9725c546a0d4..ba60da85d1c8 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4603,8 +4603,12 @@ in seconds. rcutorture.fwd_progress= [KNL] - Enable RCU grace-period forward-progress testing + Specifies the number of kthreads to be used + for RCU grace-period forward-progress testing for the types of RCU supporting this notion. + Defaults to 1 kthread, values less than zero or + greater than the number of CPUs cause the number + of CPUs to be used. rcutorture.fwd_progress_div= [KNL] Specify the fraction of a CPU-stall-warning |