From: Yury Norov <yury.norov@gmail.com>
To: "Yury Norov" <yury.norov@gmail.com>,
"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
"Rasmus Villemoes" <linux@rasmusvillemoes.dk>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Michał Mirosław" <mirq-linux@rere.qmqm.pl>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Peter Zijlstra" <peterz@infradead.org>,
"David Laight" <David.Laight@aculab.com>,
"Joe Perches" <joe@perches.com>,
"Dennis Zhou" <dennis@kernel.org>,
"Emil Renner Berthing" <kernel@esmil.dk>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Matti Vaittinen" <matti.vaittinen@fi.rohmeurope.com>,
"Alexey Klimov" <aklimov@redhat.com>,
linux-kernel@vger.kernel.org,
"Florian Fainelli" <f.fainelli@gmail.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Marc Zyngier" <maz@kernel.org>,
bcm-kernel-feedback-list@broadcom.com,
linux-mips@vger.kernel.org
Subject: [PATCH 19/54] drivers/irqchip: replace cpumask_weight with cpumask_empty where appropriate
Date: Sun, 23 Jan 2022 10:38:50 -0800 [thread overview]
Message-ID: <20220123183925.1052919-20-yury.norov@gmail.com> (raw)
In-Reply-To: <20220123183925.1052919-1-yury.norov@gmail.com>
bcm6345_l1_of_init() calls cpumask_weight() to check if any bit of a given
cpumask is set. We can do it more efficiently with cpumask_empty() because
cpumask_empty() stops traversing the cpumask as soon as it finds first set
bit, while cpumask_weight() counts all bits unconditionally.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
---
drivers/irqchip/irq-bcm6345-l1.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-bcm6345-l1.c b/drivers/irqchip/irq-bcm6345-l1.c
index fd079215c17f..142a7431745f 100644
--- a/drivers/irqchip/irq-bcm6345-l1.c
+++ b/drivers/irqchip/irq-bcm6345-l1.c
@@ -315,7 +315,7 @@ static int __init bcm6345_l1_of_init(struct device_node *dn,
cpumask_set_cpu(idx, &intc->cpumask);
}
- if (!cpumask_weight(&intc->cpumask)) {
+ if (cpumask_empty(&intc->cpumask)) {
ret = -ENODEV;
goto out_free;
}
--
2.30.2
next parent reply other threads:[~2022-01-23 18:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220123183925.1052919-1-yury.norov@gmail.com>
2022-01-23 18:38 ` Yury Norov [this message]
2022-01-24 3:11 ` [PATCH 19/54] drivers/irqchip: replace cpumask_weight with cpumask_empty where appropriate Florian Fainelli
2022-01-23 18:39 ` [PATCH 38/54] arch/mips: replace cpumask_weight with cpumask_weight_{eq, ...} " Yury Norov
2022-01-25 19:05 ` Thomas Bogendoerfer
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