jiffies: Define secs_to_jiffies()

secs_to_jiffies() is defined in hci_event.c and cannot be reused by
other call sites. Hoist it into the core code to allow conversion of the
~1150 usages of msecs_to_jiffies() that either:

 - use a multiplier value of 1000 or equivalently MSEC_PER_SEC, or
 - have timeouts that are denominated in seconds (i.e. end in 000)

It's implemented as a macro to allow usage in static initializers.

This will also allow conversion of yet more sites that use (sec * HZ)
directly, and improve their readability.

Suggested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Link: https://lore.kernel.org/all/20241030-open-coded-timeouts-v3-1-9ba123facf88@linux.microsoft.com

1 files changed, 13 insertions, 0 deletions

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index 5d21dacd62bc..ed945f42e064 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -526,6 +526,19 @@ static __always_inline unsigned long msecs_to_jiffies(const unsigned int m)
 	}
 }
 
+/**
+ * secs_to_jiffies: - convert seconds to jiffies
+ * @_secs: time in seconds
+ *
+ * Conversion is done by simple multiplication with HZ
+ *
+ * secs_to_jiffies() is defined as a macro rather than a static inline
+ * function so it can be used in static initializers.
+ *
+ * Return: jiffies value
+ */
+#define secs_to_jiffies(_secs) ((_secs) * HZ)
+
 extern unsigned long __usecs_to_jiffies(const unsigned int u);
 #if !(USEC_PER_SEC % HZ)
 static inline unsigned long _usecs_to_jiffies(const unsigned int u)