linux-kernel - [PATCH] time: export nsec_to_clock

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Message-Id: <20180328141205.2954245-1-arnd@arndb.de>
Date:   Wed, 28 Mar 2018 16:11:54 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     John Stultz <john.stultz@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>, Arnd Bergmann <arnd@...db.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>, linux-kernel@...r.kernel.org
Subject: [PATCH] time: export nsec_to_clock_t

nsec_to_clock_t was traditionally used only in the core kernel, now we
have a sysfs file that needs it from a loadable module, causing a
link-time error:

ERROR: "nsec_to_clock_t" [drivers/thermal/thermal_sys.ko] undefined!

This exports the function the same way that we do for related interfaces.

Fixes: 96cea33badc5 ("thermal: Add cooling device's statistics in sysfs")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 kernel/time/time.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/time/time.c b/kernel/time/time.c
index 6fa99213fc72..97a262531f68 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -768,6 +768,7 @@ u64 nsec_to_clock_t(u64 x)
 	return div_u64(x * 9, (9ull * NSEC_PER_SEC + (USER_HZ / 2)) / USER_HZ);
 #endif
 }
+EXPORT_SYMBOL(nsec_to_clock_t);
 
 u64 jiffies64_to_nsecs(u64 j)
 {
-- 
2.9.0