On Tue, 17 Dec 2024, Alexander Gordeev wrote: > On Tue, Dec 10, 2024 at 10:02:33PM +0000, Easwar Hariharan wrote: > > Hi Easwar, > > > This script finds and suggests conversions of timeout patterns that > > result in seconds-denominated timeouts to use the new secs_to_jiffies() > > API in include/linux/jiffies.h for better readability. > > > > Suggested-by: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx> > > Signed-off-by: Easwar Hariharan <eahariha@xxxxxxxxxxxxxxxxxxx> > > --- > > scripts/coccinelle/misc/secs_to_jiffies.cocci | 22 ++++++++++++++++++++++ > > 1 file changed, 22 insertions(+) > > > > diff --git a/scripts/coccinelle/misc/secs_to_jiffies.cocci b/scripts/coccinelle/misc/secs_to_jiffies.cocci > > new file mode 100644 > > index 0000000000000000000000000000000000000000..8bbb2884ea5db939c63fd4513cf5ca8c977aa8cb > > --- /dev/null > > +++ b/scripts/coccinelle/misc/secs_to_jiffies.cocci > > @@ -0,0 +1,22 @@ > > +// SPDX-License-Identifier: GPL-2.0-only > > +/// > > +/// Find usages of: > > +/// - msecs_to_jiffies(value*1000) > > +/// - msecs_to_jiffies(value*MSEC_PER_SEC) > > +/// > > +// Confidence: High > > +// Copyright: (C) 2024 Easwar Hariharan, Microsoft > > +// Keywords: secs, seconds, jiffies > > +// > > + > > +virtual patch > > + > > +@depends on patch@ constant C; @@ > > + > > +- msecs_to_jiffies(C * 1000) > > ++ secs_to_jiffies(C) > > + > > +@depends on patch@ constant C; @@ > > + > > +- msecs_to_jiffies(C * MSEC_PER_SEC) > > ++ secs_to_jiffies(C) > > If you used this script only, then it did not seem to recognize line arch/s390/mm/cmm.c:207 > > mod_timer(&cmm_timer, jiffies + msecs_to_jiffies(cmm_timeout_seconds * MSEC_PER_SEC)); There is the requirement that C is a constant, and cmm_timeout_seconds is not considered to be a constant, ie it is not all capital letters. Indeed, it doesn't seem to be a constant at all. I don't know if the requirement of being a comstant is really necessary. julia > > Thanks! >
