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Message-Id: <20180528100251.219971171@linuxfoundation.org>
Date:   Mon, 28 May 2018 12:00:30 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kbuild test robot <fengguang.wu@...el.com>,
        Michael Kelley <mhkelley@...look.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>, kys@...rosoft.com,
        martin.petersen@...cle.com, mikelley@...rosoft.com,
        Ingo Molnar <mingo@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 101/329] cpumask: Make for_each_cpu_wrap() available on UP as well

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Kelley <mhkelley@...look.com>

[ Upstream commit d207af2eab3f8668b95ad02b21930481c42806fd ]

for_each_cpu_wrap() was originally added in the #else half of a
large "#if NR_CPUS == 1" statement, but was omitted in the #if
half.  This patch adds the missing #if half to prevent compile
errors when NR_CPUS is 1.

Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Michael Kelley <mhkelley@...look.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: kys@...rosoft.com
Cc: martin.petersen@...cle.com
Cc: mikelley@...rosoft.com
Fixes: c743f0a5c50f ("sched/fair, cpumask: Export for_each_cpu_wrap()")
Link: http://lkml.kernel.org/r/SN6PR1901MB2045F087F59450507D4FCC17CBF50@SN6PR1901MB2045.namprd19.prod.outlook.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/cpumask.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -164,6 +164,8 @@ static inline unsigned int cpumask_local
 	for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
 #define for_each_cpu_not(cpu, mask)		\
 	for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
+#define for_each_cpu_wrap(cpu, mask, start)	\
+	for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)(start))
 #define for_each_cpu_and(cpu, mask, and)	\
 	for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask, (void)and)
 #else


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