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Subject[crng-random:jd/not-zero-entropy 7/12] arch/arm/include/asm/timex.h:14:63: error: implicit declaration of function 'sched_clock'
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git jd/not-zero-entropy
head: efec3e2057963ad20223fa50a657b3ca9314ed45
commit: 904df0ccc3b52e7dffc4b968b8839d63ecba08ce [7/12] arm: use sched_clock() for random_get_entropy() instead of zero
config: arm-buildonly-randconfig-r001-20220410 (https://download.01.org/0day-ci/archive/20220411/202204110106.XXNJ3BEs-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git/commit/?id=904df0ccc3b52e7dffc4b968b8839d63ecba08ce
git remote add crng-random git://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git
git fetch --no-tags crng-random jd/not-zero-entropy
git checkout 904df0ccc3b52e7dffc4b968b8839d63ecba08ce
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from include/linux/timex.h:65,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/jiffies.h:10,
from lib/random32.c:38:
lib/random32.c: In function 'prandom_init_early':
>> arch/arm/include/asm/timex.h:14:63: error: implicit declaration of function 'sched_clock' [-Werror=implicit-function-declaration]
14 | #define random_get_entropy() ((unsigned long)(get_cycles() ?: sched_clock()))
| ^~~~~~~~~~~
lib/random32.c:469:22: note: in expansion of macro 'random_get_entropy'
469 | v1 = random_get_entropy();
| ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
--
In file included from include/linux/timex.h:65,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from crypto/jitterentropy-kcapi.c:41:
crypto/jitterentropy-kcapi.c: In function 'jent_get_nstime':
>> arch/arm/include/asm/timex.h:14:63: error: implicit declaration of function 'sched_clock' [-Werror=implicit-function-declaration]
14 | #define random_get_entropy() ((unsigned long)(get_cycles() ?: sched_clock()))
| ^~~~~~~~~~~
crypto/jitterentropy-kcapi.c:85:15: note: in expansion of macro 'random_get_entropy'
85 | tmp = random_get_entropy();
| ^~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors


vim +/sched_clock +14 arch/arm/include/asm/timex.h

11
12 typedef unsigned long cycles_t;
13 #define get_cycles() ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
> 14 #define random_get_entropy() ((unsigned long)(get_cycles() ?: sched_clock()))
15

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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