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Date:   Tue, 28 Sep 2021 23:56:19 +0000
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Subject: [PATCH v2 02/12] timekeeping: add API for getting timekeeping_suspended
From:   Will McVicker <willmcvicker@google.com>
To:     Russell King <linux@armlinux.org.uk>,
        Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Tomasz Figa <tomasz.figa@gmail.com>,
        Chanwoo Choi <cw00.choi@samsung.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Alessandro Zummo <a.zummo@towertech.it>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        John Stultz <john.stultz@linaro.org>,
        Thomas Gleixner <tglx@linutronix.de>
Cc:     Lee Jones <lee.jones@linaro.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Saravana Kannan <saravanak@google.com>,
        Will McVicker <willmcvicker@google.com>,
        kernel-team@android.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-rtc@vger.kernel.org
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This allows modules to access the value of timekeeping_suspended without
giving them write access to the variable.

Signed-off-by: Will McVicker <willmcvicker@google.com>
---
 include/linux/timekeeping.h |  1 +
 kernel/time/timekeeping.c   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index 78a98bdff76d..cdc84421d77b 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -8,6 +8,7 @@
 /* Included from linux/ktime.h */
 
 void timekeeping_init(void);
+extern bool timekeeping_is_suspended(void);
 extern int timekeeping_suspended;
 
 /* Architecture timer tick functions: */
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index b348749a9fc6..27873c052e57 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -57,6 +57,17 @@ static struct timekeeper shadow_timekeeper;
 /* flag for if timekeeping is suspended */
 int __read_mostly timekeeping_suspended;
 
+/**
+ * timekeeping_is_suspended - query for timekeeping_suspended
+ *
+ * Returns the true/false based on the value of timekeeping_suspened.
+ */
+bool timekeeping_is_suspended(void)
+{
+	return timekeeping_suspended ? true : false;
+}
+EXPORT_SYMBOL_GPL(timekeeping_is_suspended);
+
 /**
  * struct tk_fast - NMI safe timekeeper
  * @seq:	Sequence counter for protecting updates. The lowest bit
-- 
2.33.0.685.g46640cef36-goog