Messages in this thread Patch in this message | | | Date | Mon, 21 Dec 2020 21:03:05 -0800 | From | "Paul E. McKenney" <> | Subject | Re: update.c:undefined reference to `irq_work_queue' |
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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
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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
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