Messages in this thread | | | Subject | Re: update.c:undefined reference to `irq_work_queue' | From | Randy Dunlap <> | Date | Wed, 23 Dec 2020 12:06:07 -0800 |
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On 12/21/20 9:03 PM, Paul E. McKenney wrote: > On Tue, Dec 22, 2020 at 11:24:22AM +0800, kernel test robot wrote: >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head: 8653b778e454a7708847aeafe689bce07aeeb94e >> commit: b38f57c1fe64276773b124dffb0a139cc32ab3cb rcu-tasks: Allow rcu_read_unlock_trace() under scheduler locks >> date: 8 months ago >> config: h8300-randconfig-s032-20201220 (attached as .config) >> compiler: h8300-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 >> # apt-get install sparse >> # sparse version: v0.6.3-184-g1b896707-dirty >> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b38f57c1fe64276773b124dffb0a139cc32ab3cb >> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> git fetch --no-tags linus master >> git checkout b38f57c1fe64276773b124dffb0a139cc32ab3cb >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=h8300 >> >> 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 >>): >> >> h8300-linux-ld: section .init.text LMA [000000000043a160,0000000000452569] overlaps section .rodata LMA [00000000003ff420,000000000047df2f] >> h8300-linux-ld: section .data VMA [0000000000400000,000000000043a15f] overlaps section .rodata VMA [00000000003ff420,000000000047df2f] >> h8300-linux-ld: section __ksymtab VMA [000000000047df30,000000000048611f] overlaps section .bss VMA [000000000045ebd0,000000000056a053] >> h8300-linux-ld: kernel/rcu/update.o: in function `rcu_read_unlock_trace_special': >>>> update.c:(.text+0x8f9): undefined reference to `irq_work_queue' > > Does the patch below help? > > Thanx, Paul > > ------------------------------------------------------------------------ > > commit cb7220ed05190c9a92df95b52a21525a7e08a449 > Author: Paul E. McKenney <paulmck@kernel.org> > Date: Mon Dec 21 21:00:18 2020 -0800 > > rcu: Make TASKS_TRACE_RCU select IRQ_WORK > > Tasks Trace RCU uses irq_work_queue() to safely awaken its grace-period > kthread, so this commit therefore causes the TASKS_TRACE_RCU Kconfig > option select the IRQ_WORK Kconfig option. > > Reported-by: kernel test robot <lkp@intel.com> > Signed-off-by: Paul E. McKenney <paulmck@kernel.org> > > diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig > index aa8cc8c9..3128b7c 100644 > --- a/kernel/rcu/Kconfig > +++ b/kernel/rcu/Kconfig > @@ -95,6 +95,7 @@ config TASKS_RUDE_RCU > > config TASKS_TRACE_RCU > def_bool 0 > + select IRQ_WORK > help > This option enables a task-based RCU implementation that uses > explicit rcu_read_lock_trace() read-side markers, and allows >
WorksForMe. Thanks.
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
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