* include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
@ 2026-06-25 22:45 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-06-25 22:45 UTC (permalink / raw)
To: Eric Dumazet; +Cc: oe-kbuild-all, linux-kernel, Thomas Gleixner
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4edcdefd4083ae04b1a5656f4be6cd83ae919ef4
commit: b777b5e09eabeefc6ba80f4296366a4742701103 time/jiffies: Inline jiffies_to_msecs() and jiffies_to_usecs()
date: 5 months ago
config: x86_64-randconfig-122-20260626 (https://download.01.org/0day-ci/archive/20260626/202606260626.jNiBO19z-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260626/202606260626.jNiBO19z-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: b777b5e09eab ("time/jiffies: Inline jiffies_to_msecs() and jiffies_to_usecs()")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606260626.jNiBO19z-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/gpu/drm/i915/gt/intel_engine_cs.c: note: in included file (through include/linux/ktime.h, include/linux/timer.h, include/linux/uprobes.h, include/linux/mm_types.h, ...):
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
vim +449 include/linux/jiffies.h
433
434 /*
435 * Convert various time units to each other:
436 */
437
438 #if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
439 /**
440 * jiffies_to_msecs - Convert jiffies to milliseconds
441 * @j: jiffies value
442 *
443 * This inline version takes care of HZ in {100,250,1000}.
444 *
445 * Return: milliseconds value
446 */
447 static inline unsigned int jiffies_to_msecs(const unsigned long j)
448 {
> 449 return (MSEC_PER_SEC / HZ) * j;
450 }
451 #else
452 unsigned int jiffies_to_msecs(const unsigned long j);
453 #endif
454
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
@ 2026-08-10 7:56 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-08-10 7:56 UTC (permalink / raw)
To: Eric Dumazet; +Cc: oe-kbuild-all, linux-kernel, Thomas Gleixner
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 06cf61899d6498b33e4b7c87d99d5bd471ccc375
commit: b777b5e09eabeefc6ba80f4296366a4742701103 time/jiffies: Inline jiffies_to_msecs() and jiffies_to_usecs()
date: 6 months ago
config: x86_64-randconfig-r132-20260810 (https://download.01.org/0day-ci/archive/20260810/202608101544.nyBeQ2qT-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260810/202608101544.nyBeQ2qT-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: b777b5e09eab ("time/jiffies: Inline jiffies_to_msecs() and jiffies_to_usecs()")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608101544.nyBeQ2qT-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/gpu/drm/i915/gt/intel_engine_cs.c: note: in included file (through include/linux/ktime.h, include/linux/timer.h, include/linux/uprobes.h, include/linux/mm_types.h, ...):
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
>> include/linux/jiffies.h:449:36: sparse: sparse: cast truncates bits from constant value (7fffffffffffffff becomes ffffffff)
vim +449 include/linux/jiffies.h
433
434 /*
435 * Convert various time units to each other:
436 */
437
438 #if HZ <= MSEC_PER_SEC && !(MSEC_PER_SEC % HZ)
439 /**
440 * jiffies_to_msecs - Convert jiffies to milliseconds
441 * @j: jiffies value
442 *
443 * This inline version takes care of HZ in {100,250,1000}.
444 *
445 * Return: milliseconds value
446 */
447 static inline unsigned int jiffies_to_msecs(const unsigned long j)
448 {
> 449 return (MSEC_PER_SEC / HZ) * j;
450 }
451 #else
452 unsigned int jiffies_to_msecs(const unsigned long j);
453 #endif
454
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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