linux-kernel - [PATCH v2 4/3] scftorture: Wait until scf_cleanup

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Message-ID: <20241107152736.BJPBLXGO@linutronix.de>
Date: Thu, 7 Nov 2024 16:27:36 +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
Subject: [PATCH v2 4/3] 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.

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 1268a91af5d88..ee8831096c091 100644
--- a/kernel/scftorture.c
+++ b/kernel/scftorture.c
@@ -552,7 +552,7 @@ 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