linux-kernel - [RFC PATCH 2/6] cpumask: Purify cpumask

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Date:   Sat, 25 May 2019 01:21:59 -0700
From:   Nadav Amit <namit@...are.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>
Cc:     Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
        Nadav Amit <namit@...are.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [RFC PATCH 2/6] cpumask: Purify cpumask_next()

cpumask_next() has no side-effects. Mark it as pure.

Cc: "David S. Miller" <davem@...emloft.net>
Signed-off-by: Nadav Amit <namit@...are.com>
---
 include/linux/cpumask.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 147bdec42215..20df46705f9c 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -209,7 +209,7 @@ static inline unsigned int cpumask_last(const struct cpumask *srcp)
 	return find_last_bit(cpumask_bits(srcp), nr_cpumask_bits);
 }
 
-unsigned int cpumask_next(int n, const struct cpumask *srcp);
+unsigned int __pure cpumask_next(int n, const struct cpumask *srcp);
 
 /**
  * cpumask_next_zero - get the next unset cpu in a cpumask
-- 
2.20.1