lkml.org 
[lkml]   [2021]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH rcu 4/5] scftorture: Count reschedule IPIs
Date
Currently, only those IPIs that invoke scftorture's scf_handler()
IPI handler function are counted. This means that runs exercising
only scftorture.weight_resched will look like they have made no forward
progress, resulting in "GP HANG" complaints from the rcutorture scripting.
This commit therefore increments the scf_invoked_count per-CPU counter
immediately after calling resched_cpu().

Fixes: 1ac78b49d61d4 ("scftorture: Add an alternative IPI vector")
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/scftorture.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/scftorture.c b/kernel/scftorture.c
index 74348abc792b..00bba2bdd4d1 100644
--- a/kernel/scftorture.c
+++ b/kernel/scftorture.c
@@ -341,6 +341,7 @@ static void scftorture_invoke_one(struct scf_statistics *scfp, struct torture_ra
cpu = torture_random(trsp) % nr_cpu_ids;
scfp->n_resched++;
resched_cpu(cpu);
+ this_cpu_inc(scf_invoked_count);
}
break;
case SCF_PRIM_SINGLE:
--
2.31.1.189.g2e36527f23
\
 
 \ /
  Last update: 2021-09-16 01:42    [W:0.047 / U:1.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site