Messages in this thread | | | Date | Mon, 6 Apr 2020 06:37:09 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [rcu:dev.2020.04.03a 101/101] kernel/rcu/tasks.h:251:9: error: 'struct task_struct' has no member named 'rcu_tasks_idx' |
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On Mon, Apr 06, 2020 at 08:09:14AM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.04.03a > head: 8c64539e2d8fbd96ad4bb60a96c5d9c1ef823572 > commit: 8c64539e2d8fbd96ad4bb60a96c5d9c1ef823572 [101/101] squash! ftrace: Use synchronize_rcu_tasks_rude() instead of ftrace_sync() > config: powerpc-defconfig (attached as .config) > compiler: powerpc64-linux-gcc (GCC) 9.3.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 8c64539e2d8fbd96ad4bb60a96c5d9c1ef823572 > # save the attached .config to linux build tree > GCC_VERSION=9.3.0 make.cross ARCH=powerpc > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kbuild test robot <lkp@intel.com>
Messed up the Kconfig, and I have an alleged fix in -rcu which will be squashed into the offending commit with attribution.
Thanx, Paul
> All errors (new ones prefixed by >>): > > In file included from kernel/rcu/update.c:563: > kernel/rcu/tasks.h: In function 'exit_tasks_rcu_start': > >> kernel/rcu/tasks.h:251:9: error: 'struct task_struct' has no member named 'rcu_tasks_idx' > 251 | current->rcu_tasks_idx = __srcu_read_lock(&tasks_rcu_exit_srcu); > | ^~ > kernel/rcu/tasks.h: In function 'exit_tasks_rcu_finish': > kernel/rcu/tasks.h:263:44: error: 'struct task_struct' has no member named 'rcu_tasks_idx' > 263 | __srcu_read_unlock(&tasks_rcu_exit_srcu, t->rcu_tasks_idx); > | ^~ > > vim +251 kernel/rcu/tasks.h > > dfdddf06801dcb Paul E. McKenney 2020-03-03 246 > dfdddf06801dcb Paul E. McKenney 2020-03-03 247 /* Do the srcu_read_lock() for the above synchronize_srcu(). */ > dfdddf06801dcb Paul E. McKenney 2020-03-03 248 void exit_tasks_rcu_start(void) __acquires(&tasks_rcu_exit_srcu) > dfdddf06801dcb Paul E. McKenney 2020-03-03 249 { > dfdddf06801dcb Paul E. McKenney 2020-03-03 250 preempt_disable(); > dfdddf06801dcb Paul E. McKenney 2020-03-03 @251 current->rcu_tasks_idx = __srcu_read_lock(&tasks_rcu_exit_srcu); > dfdddf06801dcb Paul E. McKenney 2020-03-03 252 preempt_enable(); > 4dbad397293c85 Paul E. McKenney 2020-03-02 253 } > dfdddf06801dcb Paul E. McKenney 2020-03-03 254 > > :::::: The code at line 251 was first introduced by commit > :::::: dfdddf06801dcbee9f3ab515aad75421b3e3e75f rcu-tasks: Refactor RCU-tasks to allow variants to be added > > :::::: TO: Paul E. McKenney <paulmck@kernel.org> > :::::: CC: Paul E. McKenney <paulmck@kernel.org> > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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