CC: kbuild-all(a)lists.01.org In-Reply-To: <20220203143557.218112-1-abbotti@mev.co.uk> References: <20220203143557.218112-1-abbotti@mev.co.uk> TO: Ian Abbott TO: linux-kernel(a)vger.kernel.org CC: Ian Abbott Hi Ian, I love your patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.17-rc2 next-20220203] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Ian-Abbott/typecheck-h-Force-a-compilation-error-if-typecheck-type-x-fails/20220203-223926 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39 :::::: branch date: 6 hours ago :::::: commit date: 6 hours ago config: s390-randconfig-s032-20220131 (https://download.01.org/0day-ci/archive/20220204/202202040415.Srmlcnyq-lkp(a)intel.com/config) compiler: s390-linux-gcc (GCC) 11.2.0 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-dirty # https://github.com/0day-ci/linux/commit/358f0e8d7cf26c3747b40e1a5baf67e3ed00ac4a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ian-Abbott/typecheck-h-Force-a-compilation-error-if-typecheck-type-x-fails/20220203-223926 git checkout 358f0e8d7cf26c3747b40e1a5baf67e3ed00ac4a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash arch/s390/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot 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, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org