linux-kernel - [PATCH 1/1] delay: rename fsleep to usleep

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Date:   Wed,  6 Apr 2022 10:56:43 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-kernel@...r.kernel.org,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     linux-renesas-soc@...r.kernel.org,
        Greg KH <gregkh@...uxfoundation.org>,
        David Miller <davem@...emloft.net>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Subject: [PATCH 1/1] delay: rename fsleep to usleep_autoyield

Rename fsleep because the current name breaks the pattern of the first
letter being a unit (and it is not 'femto' here). Let's add the proper
unit again and add a suffix to the function which will hopefully be a
bit more explanatory. To give some time until all users are converted,
introduce a fallback define which will go away later.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 Documentation/timers/timers-howto.rst | 2 +-
 include/linux/delay.h                 | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/timers/timers-howto.rst b/Documentation/timers/timers-howto.rst
index 5c169e3d29a8..d0a57ca5e18e 100644
--- a/Documentation/timers/timers-howto.rst
+++ b/Documentation/timers/timers-howto.rst
@@ -112,4 +112,4 @@ NON-ATOMIC CONTEXT:
 			you know you have a need for the interruptible variant.
 
 	FLEXIBLE SLEEPING (any delay, uninterruptible)
-		* Use fsleep
+		* Use usleep_autoyield
diff --git a/include/linux/delay.h b/include/linux/delay.h
index 039e7e0c7378..d0919f52fec8 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -78,7 +78,7 @@ static inline void ssleep(unsigned int seconds)
 }
 
 /* see Documentation/timers/timers-howto.rst for the thresholds */
-static inline void fsleep(unsigned long usecs)
+static inline void usleep_autoyield(unsigned long usecs)
 {
 	if (usecs <= 10)
 		udelay(usecs);
@@ -88,4 +88,6 @@ static inline void fsleep(unsigned long usecs)
 		msleep(DIV_ROUND_UP(usecs, 1000));
 }
 
+#define fsleep usleep_autoyield
+
 #endif /* defined(_LINUX_DELAY_H) */
-- 
2.30.2