linux-kernel - [PATCH v3 2/4] scftorture: Wait until scf_cleanup

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Message-ID: <20241108104217.3759904-3-bigeasy@linutronix.de>
Date: Fri,  8 Nov 2024 11:39:32 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: kasan-dev@...glegroups.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Cc: "Paul E. McKenney" <paulmck@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Marco Elver <elver@...gle.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Tomas Gleixner <tglx@...utronix.de>,
	Vlastimil Babka <vbabka@...e.cz>,
	akpm@...ux-foundation.org,
	cl@...ux.com,
	iamjoonsoo.kim@....com,
	longman@...hat.com,
	penberg@...nel.org,
	rientjes@...gle.com,
	sfr@...b.auug.org.au,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH v3 2/4] scftorture: Wait until scf_cleanup_handler() completes.

The smp_call_function() needs to be invoked with the wait flag set to
wait until scf_cleanup_handler() is done. This ensures that all SMP
function calls, that have been queued earlier, complete at this point.

Tested-by: Paul E. McKenney <paulmck@...nel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 kernel/scftorture.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/scftorture.c b/kernel/scftorture.c
index 455cbff35a1a2..654702f75c54b 100644
--- a/kernel/scftorture.c
+++ b/kernel/scftorture.c
@@ -523,7 +523,7 @@ static void scf_torture_cleanup(void)
 			torture_stop_kthread("scftorture_invoker", scf_stats_p[i].task);
 	else
 		goto end;
-	smp_call_function(scf_cleanup_handler, NULL, 0);
+	smp_call_function(scf_cleanup_handler, NULL, 1);
 	torture_stop_kthread(scf_torture_stats, scf_torture_stats_task);
 	scf_torture_stats_print();  // -After- the stats thread is stopped!
 	kfree(scf_stats_p);  // -After- the last stats print has completed!
-- 
2.45.2