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
Subject: [PATCH v2 02/12] timekeeping: add API for getting timekeeping_suspended
Date: Tue, 28 Sep 2021 23:56:19 +0000 [thread overview]
Message-ID: <20210928235635.1348330-3-willmcvicker@google.com> (raw)
In-Reply-To: <20210928235635.1348330-1-willmcvicker@google.com>
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
next prev parent reply other threads:[~2021-09-28 23:57 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-28 23:56 [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Will McVicker
2021-09-28 23:56 ` [PATCH v2 01/12] arm64: don't have ARCH_EXYNOS select EXYNOS_CHIPID Will McVicker
2021-09-29 13:58 ` (subset) " Krzysztof Kozlowski
2021-09-29 14:00 ` Krzysztof Kozlowski
2021-09-28 23:56 ` Will McVicker [this message]
2021-09-29 3:42 ` [PATCH v2 02/12] timekeeping: add API for getting timekeeping_suspended John Stultz
2021-09-29 20:01 ` Will McVicker
2021-09-29 20:46 ` John Stultz
2021-09-30 18:31 ` Will McVicker
2021-09-28 23:56 ` [PATCH v2 03/12] clk: samsung: add support for CPU clocks Will McVicker
2021-09-28 23:56 ` [PATCH v2 04/12] clk: samsung: exynos5433: update apollo and atlas clock probing Will McVicker
2021-09-28 23:56 ` [PATCH v2 05/12] clk: export __clk_lookup Will McVicker
2021-10-08 4:31 ` Stephen Boyd
2021-09-28 23:56 ` [PATCH v2 06/12] clk: samsung: modularize exynos arm64 clk drivers Will McVicker
2021-09-28 23:56 ` [PATCH v2 07/12] clk: samsung: set exynos arm64 clk driver as tristate Will McVicker
2021-09-29 13:09 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 08/12] pinctrl: samsung: modularize the ARM and ARM64 pinctrls Will McVicker
2021-09-29 2:01 ` Chanho Park
2021-09-28 23:56 ` [PATCH v2 09/12] pinctrl: samsung: set PINCTRL_EXYNOS and PINCTRL_SAMSUNG as tristate Will McVicker
2021-09-28 23:56 ` [PATCH v2 10/12] soc: samsung: pmu: modularize the Exynos ARMv8 PMU driver Will McVicker
2021-09-29 13:11 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 11/12] soc: samsung: pm_domains: modularize EXYNOS_PM_DOMAINS Will McVicker
2021-09-29 13:36 ` Krzysztof Kozlowski
2021-09-28 23:56 ` [PATCH v2 12/12] ARM: rtc: remove HAVE_S3C_RTC in favor of direct dependencies Will McVicker
2021-09-29 11:52 ` Alexandre Belloni
2021-09-29 13:02 ` [PATCH v2 00/12] arm64: Kconfig: Update ARCH_EXYNOS select configs Krzysztof Kozlowski
2021-09-29 19:48 ` Will McVicker
2021-09-30 6:14 ` Krzysztof Kozlowski
2021-09-30 9:01 ` Arnd Bergmann
2021-09-30 9:30 ` Lee Jones
2021-09-30 10:33 ` Krzysztof Kozlowski
2021-09-30 12:34 ` Lee Jones
2021-09-30 12:38 ` Krzysztof Kozlowski
2021-09-30 10:05 ` Geert Uytterhoeven
2021-09-30 9:23 ` Lee Jones
2021-09-30 10:17 ` Geert Uytterhoeven
2021-09-30 10:56 ` Lee Jones
2021-09-30 11:25 ` Geert Uytterhoeven
2021-09-30 12:08 ` Lee Jones
2021-09-30 16:09 ` Geert Uytterhoeven
2021-09-30 10:52 ` Krzysztof Kozlowski
2021-09-30 12:32 ` Lee Jones
2021-09-30 11:01 ` Tomasz Figa
2021-09-30 11:27 ` Geert Uytterhoeven
2021-09-30 11:51 ` Lee Jones
2021-09-30 12:10 ` Tomasz Figa
2021-09-30 12:15 ` Krzysztof Kozlowski
2021-09-30 12:45 ` Lee Jones
2021-10-01 4:01 ` Christoph Hellwig
2021-10-01 4:52 ` Saravana Kannan
2021-10-01 4:55 ` Christoph Hellwig
2021-09-30 12:21 ` Krzysztof Kozlowski
2021-09-30 12:39 ` Lee Jones
2021-09-30 13:08 ` Krzysztof Kozlowski
2021-09-30 13:29 ` Lee Jones
2021-09-30 16:12 ` Geert Uytterhoeven
2021-09-30 16:21 ` Lee Jones
2021-09-30 16:26 ` Geert Uytterhoeven
2021-09-30 18:02 ` Will McVicker
2021-10-01 4:04 ` Christoph Hellwig
2021-10-01 4:52 ` Olof Johansson
2021-10-01 5:23 ` Saravana Kannan
2021-10-01 5:35 ` Olof Johansson
2021-10-01 5:59 ` Will McVicker
2021-10-01 8:01 ` Krzysztof Kozlowski
2021-10-01 6:02 ` Saravana Kannan
2021-10-01 6:27 ` Olof Johansson
2021-10-01 6:30 ` Olof Johansson
2021-10-01 12:00 ` Arnd Bergmann
2021-10-01 12:31 ` Lee Jones
2021-10-01 15:43 ` Olof Johansson
2021-10-01 11:38 ` Linus Walleij
2021-10-01 11:59 ` Geert Uytterhoeven
2021-10-01 15:59 ` Olof Johansson
2021-10-01 16:51 ` Will McVicker
2021-10-01 17:15 ` Olof Johansson
2021-10-01 17:48 ` Will McVicker
2021-10-01 8:19 ` Geert Uytterhoeven
2021-10-01 9:00 ` Arnd Bergmann
2021-10-01 15:27 ` Olof Johansson
2021-10-01 19:26 ` Saravana Kannan
2021-10-02 1:47 ` Tomasz Figa
2021-10-02 21:03 ` Olof Johansson
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