From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: arch/s390/kernel/vtime.c:148:13: sparse: sparse: too long token expansion
Date: Fri, 01 Jul 2022 02:33:45 +0800 [thread overview]
Message-ID: <202207010242.bHbSCpsB-lkp@intel.com> (raw)
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::::::
:::::: Manual check reason: "low confidence static check first_new_problem: arch/s390/kernel/vtime.c:148:13: sparse: sparse: too long token expansion"
::::::
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: Ian Abbott <abbotti@mev.co.uk>
CC: 0day robot <lkp@intel.com>
tree: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20220624-185749/Ian-Abbott/typecheck-h-Force-a-compilation-error-if-typecheck-type-x-fails/20220203-223926
head: cd7ada76c22048d07d7b311abf1d181d6d6fe6e2
commit: cd7ada76c22048d07d7b311abf1d181d6d6fe6e2 typecheck.h: Force a compilation error if typecheck(type,x) fails
date: 6 days ago
:::::: branch date: 6 days ago
:::::: commit date: 6 days ago
config: s390-randconfig-s031-20220629 (https://download.01.org/0day-ci/archive/20220701/202207010242.bHbSCpsB-lkp(a)intel.com/config)
compiler: s390-linux-gcc (GCC) 11.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://github.com/intel-lab-lkp/linux/commit/cd7ada76c22048d07d7b311abf1d181d6d6fe6e2
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review UPDATE-20220624-185749/Ian-Abbott/typecheck-h-Force-a-compilation-error-if-typecheck-type-x-fails/20220203-223926
git checkout cd7ada76c22048d07d7b311abf1d181d6d6fe6e2
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> arch/s390/kernel/vtime.c:148:13: sparse: sparse: too long token expansion
vim +148 arch/s390/kernel/vtime.c
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 120
^1da177e4c3f41 Linus Torvalds 2005-04-16 121 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 122 * Update process times based on virtual cpu times stored by entry.S
^1da177e4c3f41 Linus Torvalds 2005-04-16 123 * to the lowcore fields user_timer, system_timer & steal_clock.
^1da177e4c3f41 Linus Torvalds 2005-04-16 124 */
8f2b468aadc81c Martin Schwidefsky 2016-12-20 125 static int do_account_vtime(struct task_struct *tsk)
^1da177e4c3f41 Linus Torvalds 2005-04-16 126 {
152e9b8676c6e7 Martin Schwidefsky 2019-03-06 127 u64 timer, clock, user, guest, system, hardirq, softirq;
^1da177e4c3f41 Linus Torvalds 2005-04-16 128
^1da177e4c3f41 Linus Torvalds 2005-04-16 129 timer = S390_lowcore.last_update_timer;
^1da177e4c3f41 Linus Torvalds 2005-04-16 130 clock = S390_lowcore.last_update_clock;
1c7673476b8298 Heiko Carstens 2021-02-02 131 /* Use STORE CLOCK by default, STORE CLOCK FAST if available. */
1c7673476b8298 Heiko Carstens 2021-02-02 132 alternative_io("stpt %0\n .insn s,0xb2050000,%1\n",
1c7673476b8298 Heiko Carstens 2021-02-02 133 "stpt %0\n .insn s,0xb27c0000,%1\n",
1c7673476b8298 Heiko Carstens 2021-02-02 134 25,
1c7673476b8298 Heiko Carstens 2021-02-02 135 ASM_OUTPUT2("=Q" (S390_lowcore.last_update_timer),
1c7673476b8298 Heiko Carstens 2021-02-02 136 "=Q" (S390_lowcore.last_update_clock)),
1c7673476b8298 Heiko Carstens 2021-02-02 137 ASM_NO_INPUT_CLOBBER("cc"));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 138 clock = S390_lowcore.last_update_clock - clock;
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 139 timer -= S390_lowcore.last_update_timer;
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 140
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 141 if (hardirq_count())
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 142 S390_lowcore.hardirq_timer += timer;
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 143 else
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 144 S390_lowcore.system_timer += timer;
^1da177e4c3f41 Linus Torvalds 2005-04-16 145
72d38b19781de4 Martin Schwidefsky 2015-09-18 146 /* Update MT utilization calculation */
f341b8dff9823a Martin Schwidefsky 2015-08-03 147 if (smp_cpu_mtid &&
72d38b19781de4 Martin Schwidefsky 2015-09-18 @148 time_after64(jiffies_64, this_cpu_read(mt_scaling_jiffies)))
72d38b19781de4 Martin Schwidefsky 2015-09-18 149 update_mt_scaling();
10ad34bc76dfbc Martin Schwidefsky 2015-01-14 150
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 151 /* Calculate cputime delta */
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 152 user = update_tsk_timer(&tsk->thread.user_timer,
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 153 READ_ONCE(S390_lowcore.user_timer));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 154 guest = update_tsk_timer(&tsk->thread.guest_timer,
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 155 READ_ONCE(S390_lowcore.guest_timer));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 156 system = update_tsk_timer(&tsk->thread.system_timer,
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 157 READ_ONCE(S390_lowcore.system_timer));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 158 hardirq = update_tsk_timer(&tsk->thread.hardirq_timer,
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 159 READ_ONCE(S390_lowcore.hardirq_timer));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 160 softirq = update_tsk_timer(&tsk->thread.softirq_timer,
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 161 READ_ONCE(S390_lowcore.softirq_timer));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 162 S390_lowcore.steal_timer +=
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 163 clock - user - guest - system - hardirq - softirq;
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 164
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 165 /* Push account value */
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 166 if (user) {
23244a5c8003d4 Frederic Weisbecker 2017-01-31 167 account_user_time(tsk, cputime_to_nsecs(user));
5613fda9a503cd Frederic Weisbecker 2017-01-31 168 tsk->utimescaled += cputime_to_nsecs(scale_vtime(user));
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 169 }
10ad34bc76dfbc Martin Schwidefsky 2015-01-14 170
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 171 if (guest) {
fb8b049c988f1f Frederic Weisbecker 2017-01-31 172 account_guest_time(tsk, cputime_to_nsecs(guest));
5613fda9a503cd Frederic Weisbecker 2017-01-31 173 tsk->utimescaled += cputime_to_nsecs(scale_vtime(guest));
10ad34bc76dfbc Martin Schwidefsky 2015-01-14 174 }
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 175
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 176 if (system)
b29e061bb7a8d2 Martin Schwidefsky 2017-05-12 177 account_system_index_scaled(tsk, system, CPUTIME_SYSTEM);
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 178 if (hardirq)
b29e061bb7a8d2 Martin Schwidefsky 2017-05-12 179 account_system_index_scaled(tsk, hardirq, CPUTIME_IRQ);
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 180 if (softirq)
b29e061bb7a8d2 Martin Schwidefsky 2017-05-12 181 account_system_index_scaled(tsk, softirq, CPUTIME_SOFTIRQ);
^1da177e4c3f41 Linus Torvalds 2005-04-16 182
b7394a5f4ce954 Martin Schwidefsky 2017-01-05 183 return virt_timer_forward(user + guest + system + hardirq + softirq);
^1da177e4c3f41 Linus Torvalds 2005-04-16 184 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 185
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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