linux-kernel - [PATCH 2/8] hrtimers: Update formatting of documentation

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Message-Id: <20240123164702.55612-3-anna-maria@linutronix.de>
Date: Tue, 23 Jan 2024 17:46:56 +0100
From: Anna-Maria Behnsen <anna-maria@...utronix.de>
To: linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Frederic Weisbecker <frederic@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	John Stultz <jstultz@...gle.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	Clemens Ladisch <clemens@...isch.de>,
	linux-doc@...r.kernel.org,
	Anna-Maria Behnsen <anna-maria@...utronix.de>
Subject: [PATCH 2/8] hrtimers: Update formatting of documentation

Documentation of functions lacks the annotations which are used by
kernel-doc and *.rst to make appearance in rendered documents more
user-friendly.

Use those annotations to improve user-friendliness. While at it prevent
duplication of comments and use a reference instead.

Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
---
 include/linux/hrtimer.h | 14 +++-----------
 kernel/time/hrtimer.c   | 18 ++++++++++--------
 2 files changed, 13 insertions(+), 19 deletions(-)

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 792a0ac75378..aa1e65ccb615 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -342,20 +342,12 @@ extern u64
 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval);
 
 /**
- * hrtimer_forward_now - forward the timer expiry so it expires after now
+ * hrtimer_forward_now() - forward the timer expiry so it expires after now
  * @timer:	hrtimer to forward
  * @interval:	the interval to forward
  *
- * Forward the timer expiry so it will expire after the current time
- * of the hrtimer clock base. Returns the number of overruns.
- *
- * Can be safely called from the callback function of @timer. If
- * called from other contexts @timer must neither be enqueued nor
- * running the callback and the caller needs to take care of
- * serialization.
- *
- * Note: This only updates the timer expiry value and does not requeue
- * the timer.
+ * It is a variant of hrtimer_forward(). The timer will expire after the current
+ * time of the hrtimer clock base. See hrtimer_forward() for details.
  */
 static inline u64 hrtimer_forward_now(struct hrtimer *timer,
 				      ktime_t interval)
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 760793998cdd..4c8dd633ab4a 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -1021,21 +1021,23 @@ void unlock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
 }
 
 /**
- * hrtimer_forward - forward the timer expiry
+ * hrtimer_forward() - forward the timer expiry
  * @timer:	hrtimer to forward
  * @now:	forward past this time
  * @interval:	the interval to forward
  *
  * Forward the timer expiry so it will expire in the future.
- * Returns the number of overruns.
  *
- * Can be safely called from the callback function of @timer. If
- * called from other contexts @timer must neither be enqueued nor
- * running the callback and the caller needs to take care of
- * serialization.
+ * .. note::
+ *  This only updates the timer expiry value and does not requeue the timer.
  *
- * Note: This only updates the timer expiry value and does not requeue
- * the timer.
+ * There is also a variant of the function hrtimer_forward_now().
+ *
+ * Context: Can be safely called from the callback function of @timer. If called
+ *          from other contexts @timer must neither be enqueued nor running the
+ *          callback and the caller needs to take care of serialization.
+ *
+ * Return: The number of overruns are returned.
  */
 u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
 {
-- 
2.39.2