kernel/linux.git/include/linux/jiffies.h, branch v6.18.21

jiffies: Remove obsolete SHIFTED_HZ comment

2025-09-03T09:59:28+00:00

b3c869d35b9b ("jiffies: Remove compile time assumptions about CLOCK_TICK_RATE") removed the last definition of SHIFTED_HZ but left behind comments about it. Remove the comments as well. Signed-off-by: Bjorn Helgaas Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250825203425.796034-1-helgaas@kernel.org

time/jiffies: Change register_refined_jiffies() to void __init

2025-04-30T07:06:23+00:00

register_refined_jiffies() is only used in setup code and always returns 0. Mark it as __init to save some bytes and change it to void. Signed-off-by: Su Hui Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250430032734.2079290-2-suhui@nfschina.com

jiffies: Cast to unsigned long in secs_to_jiffies() conversion

2025-01-31T08:30:49+00:00

While converting users of msecs_to_jiffies(), lkp reported that some range checks would always be true because of the mismatch between the implied int value of secs_to_jiffies() vs the unsigned long return value of the msecs_to_jiffies() calls it was replacing. Fix this by casting the secs_to_jiffies() input value to unsigned long. Fixes: b35108a51cf7ba ("jiffies: Define secs_to_jiffies()") Reported-by: kernel test robot Signed-off-by: Easwar Hariharan Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/20250130192701.99626-1-eahariha@linux.microsoft.com Closes: https://lore.kernel.org/oe-kbuild-all/202501301334.NB6NszQR-lkp@intel.com/

jiffies: Define secs_to_jiffies()

2024-10-30T18:47:20+00:00

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 Signed-off-by: Easwar Hariharan Signed-off-by: Thomas Gleixner Reviewed-by: Luiz Augusto von Dentz Link: https://lore.kernel.org/all/20241030-open-coded-timeouts-v3-1-9ba123facf88@linux.microsoft.com

time: Fix references to _msecs_to_jiffies() handling of values

2024-10-25T17:50:10+00:00

The details about the handling of the "normal" values were moved to the _msecs_to_jiffies() helpers in commit ca42aaf0c861 ("time: Refactor msecs_to_jiffies"). However, the same commit still mentioned __msecs_to_jiffies() in the added documentation. Thus point to _msecs_to_jiffies() instead. Fixes: ca42aaf0c861 ("time: Refactor msecs_to_jiffies") Signed-off-by: Miguel Ojeda Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20241025110141.157205-2-ojeda@kernel.org

treewide: Fix wrong singular form of jiffies in comments

2024-09-08T18:47:40+00:00

There are several comments all over the place, which uses a wrong singular form of jiffies. Replace 'jiffie' by 'jiffy'. No functional change. Signed-off-by: Anna-Maria Behnsen Signed-off-by: Thomas Gleixner Acked-by: Geert Uytterhoeven # m68k Link: https://lore.kernel.org/all/20240904-devel-anna-maria-b4-timers-flseep-v1-3-e98760256370@linutronix.de

jiffies: Transform comment about time_* functions into DOC block

2024-02-19T08:38:00+00:00

This general note about time_* functions is also useful to be available in kernel documentation. Therefore transform it into a kernel-doc DOC block with proper formatting. Signed-off-by: Anna-Maria Behnsen Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20240123164702.55612-6-anna-maria@linutronix.de

jiffies: add kernel-doc for all APIs

2023-07-14T19:47:07+00:00

Add kernel-doc notation in for interfaces that don't already have it (i.e. most interfaces). Fix some formatting and typos in other comments. Signed-off-by: Randy Dunlap Cc: John Stultz Cc: Thomas Gleixner Cc: Stephen Boyd Cc: Jonathan Corbet Cc: linux-doc@vger.kernel.org Acked-by: John Stultz Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20230704052405.5089-2-rdunlap@infradead.org

kernel.h: split out min()/max() et al. helpers

2020-10-16T18:11:19+00:00

kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt to start cleaning it up by splitting out min()/max() et al. helpers. At the same time convert users in header and lib folder to use new header. Though for time being include new header back to kernel.h to avoid twisted indirected includes for other existing users. Signed-off-by: Andy Shevchenko Signed-off-by: Andrew Morton Cc: "Rafael J. Wysocki" Cc: Steven Rostedt Cc: Rasmus Villemoes Cc: Joe Perches Cc: Linus Torvalds Link: https://lkml.kernel.org/r/20200910164152.GA1891694@smile.fi.intel.com Signed-off-by: Linus Torvalds

linux/jiffies.h: Extract common header for vDSO

2020-03-21T14:23:58+00:00

The vDSO library should only include the necessary headers required for a userspace library (UAPI and a minimal set of kernel headers). To make this possible it is necessary to isolate from the kernel headers the common parts that are strictly necessary to build the library. Split jiffies.h into linux and common headers to make the latter suitable for inclusion in the vDSO library. Signed-off-by: Vincenzo Frascino Signed-off-by: Thomas Gleixner Link: https://lkml.kernel.org/r/20200320145351.32292-14-vincenzo.frascino@arm.com