linux-kernel - [PATCH v2 1/3] scftorture: Avoid additional div operation.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241107111821.3417762-2-bigeasy@linutronix.de>
Date: Thu,  7 Nov 2024 12:13:06 +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 v2 1/3] scftorture: Avoid additional div operation.

Replace "scfp->cpu % nr_cpu_ids" with "cpu". This has been computed
earlier.

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 44e83a6462647..455cbff35a1a2 100644
--- a/kernel/scftorture.c
+++ b/kernel/scftorture.c
@@ -463,7 +463,7 @@ static int scftorture_invoker(void *arg)
 
 	// Make sure that the CPU is affinitized appropriately during testing.
 	curcpu = raw_smp_processor_id();
-	WARN_ONCE(curcpu != scfp->cpu % nr_cpu_ids,
+	WARN_ONCE(curcpu != cpu,
 		  "%s: Wanted CPU %d, running on %d, nr_cpu_ids = %d\n",
 		  __func__, scfp->cpu, curcpu, nr_cpu_ids);
 
-- 
2.45.2