Messages in this thread | | | Date | Tue, 26 May 2020 09:11:17 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [rcu:dev.2020.05.25a 51/63] kernel/rcu/refperf.c:298:6: warning: no previous prototype for function 'reset_readers' |
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On Tue, May 26, 2020 at 08:07:35PM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.05.25a > head: 1e9451642683146552713c5ce6d269ae378eacd5 > commit: 786a25497743696d79592b864cafbfe48787e6e1 [51/63] refperf: Add a test to measure performance of read-side synchronization > config: x86_64-allyesconfig (attached as .config) > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b) > 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 > # install x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > git checkout 786a25497743696d79592b864cafbfe48787e6e1 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot <lkp@intel.com> > > All warnings (new ones prefixed by >>, old ones prefixed by <<): > > >> kernel/rcu/refperf.c:298:6: warning: no previous prototype for function 'reset_readers' [-Wmissing-prototypes] > void reset_readers(int n) > ^ > kernel/rcu/refperf.c:298:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > void reset_readers(int n) > ^ > static > >> kernel/rcu/refperf.c:311:5: warning: no previous prototype for function 'process_durations' [-Wmissing-prototypes] > u64 process_durations(int n) > ^ > kernel/rcu/refperf.c:311:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > u64 process_durations(int n) > ^ > static > 2 warnings generated.
Good catches, fixing!
Thanx, Paul
> vim +/reset_readers +298 kernel/rcu/refperf.c > > 297 > > 298 void reset_readers(int n) > 299 { > 300 int i; > 301 struct reader_task *rt; > 302 > 303 for (i = 0; i < n; i++) { > 304 rt = &(reader_tasks[i]); > 305 > 306 rt->last_duration_ns = 0; > 307 } > 308 } > 309 > 310 // Print the results of each reader and return the sum of all their durations. > > 311 u64 process_durations(int n) > 312 { > 313 int i; > 314 struct reader_task *rt; > 315 char buf1[64]; > 316 char buf[512]; > 317 u64 sum = 0; > 318 > 319 buf[0] = 0; > 320 sprintf(buf, "Experiment #%d (Format: <THREAD-NUM>:<Total loop time in ns>)", > 321 exp_idx); > 322 > 323 for (i = 0; i <= n && !torture_must_stop(); i++) { > 324 rt = &(reader_tasks[i]); > 325 sprintf(buf1, "%d: %llu\t", i, rt->last_duration_ns); > 326 > 327 if (i % 5 == 0) > 328 strcat(buf, "\n"); > 329 strcat(buf, buf1); > 330 > 331 sum += rt->last_duration_ns; > 332 } > 333 strcat(buf, "\n"); > 334 > 335 PERFOUT("%s\n", buf); > 336 > 337 return sum; > 338 } > 339 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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