tree: https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git rcu-segcb head: fb866e723f8f64bc4f1e6d19add6a4ff285fcc02 commit: 6c20fe430956a44bc2034f58d55678fb8e8cff19 [3/7] rcu/trace: Add name of the source for gp_seq config: x86_64-rhel-7.6 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout 6c20fe430956a44bc2034f58d55678fb8e8cff19 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from include/asm-generic/percpu.h:7, from arch/x86/include/asm/percpu.h:556, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from kernel/rcu/tree.c:23: kernel/rcu/tree_plugin.h: In function 'rcu_qs': 444 | ({ \ | ~^~~~~~~~~~~ | | | long unsigned int 445 | __this_cpu_preempt_check("read"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 446 | raw_cpu_read(pcp); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~ 447 | }) | ~~ 792 | __this_cpu_read(rcu_data.gp_seq), TPS("cpuqs")); | ^~~~~~~~~~~~~~~ In file included from include/linux/trace_events.h:11, from kernel/rcu/tree.c:47: include/trace/events/rcu.h:71:44: note: expected 'const char *' but argument is of type 'long unsigned int' 71 | TP_PROTO(const char *rcuname, const char *gp_seq_src, | ~~~~~~~~~~~~^~~~~~~~~~ include/linux/tracepoint.h:530:34: note: in definition of macro 'DECLARE_EVENT_NOP' 530 | static inline void trace_##name(proto) \ | ^~~~~ include/linux/tracepoint.h:538:26: note: in expansion of macro 'PARAMS' 538 | DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args)) | ^~~~~~ 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ 71 | TP_PROTO(const char *rcuname, const char *gp_seq_src, | ^~~~~~~~ 360 | ({ \ | ~^~~~~~~~~~ | | | const char * 361 | static const char *___tp_str __tracepoint_string = str; \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 362 | ___tp_str; \ | ~~~~~~~~~~~~~~~~~ 363 | }) | ~~ 247 | #define TPS(x) tracepoint_string(x) | ^~~~~~~~~~~~~~~~~ 792 | __this_cpu_read(rcu_data.gp_seq), TPS("cpuqs")); | ^~~ include/trace/events/rcu.h:72:17: note: expected 'long unsigned int' but argument is of type 'const char *' 72 | unsigned long gp_seq, const char *gpevent), | ~~~~~~~~~~~~~~^~~~~~ include/linux/tracepoint.h:530:34: note: in definition of macro 'DECLARE_EVENT_NOP' 530 | static inline void trace_##name(proto) \ | ^~~~~ include/linux/tracepoint.h:538:26: note: in expansion of macro 'PARAMS' 538 | DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args)) | ^~~~~~ 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ 71 | TP_PROTO(const char *rcuname, const char *gp_seq_src, | ^~~~~~~~ In file included from kernel/rcu/tree.c:4281: 791 | trace_rcu_grace_period(TPS("rcu_sched"), | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/trace_events.h:11, from kernel/rcu/tree.c:47: include/linux/tracepoint.h:530:21: note: declared here 530 | static inline void trace_##name(proto) \ | ^~~~~~ 538 | DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~ 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ 69 | TRACE_EVENT_RCU(rcu_grace_period, | ^~~~~~~~~~~~~~~ vim +/trace_rcu_grace_period +791 kernel/rcu/tree_plugin.h f41d911f8c49a5 kernel/rcutree_plugin.h Paul E. McKenney 2009-08-22 779 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 780 /* 90326f0521a880 kernel/rcu/tree_plugin.h Sebastian Andrzej Siewior 2019-10-15 781 * Note a quiescent state for PREEMPTION=n. Because we do not need to know 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 782 * how many quiescent states passed, just if there was at least one since 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 783 * the start of the grace period, this just sets a flag. The caller must 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 784 * have disabled preemption. 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 785 */ 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 786 static void rcu_qs(void) d28139c4e96713 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-06-28 787 { 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 788 RCU_LOCKDEP_WARN(preemptible(), "rcu_qs() invoked with preemption enabled!!!"); 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 789 if (!__this_cpu_read(rcu_data.cpu_no_qs.s)) 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 790 return; 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 @791 trace_rcu_grace_period(TPS("rcu_sched"), 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 @792 __this_cpu_read(rcu_data.gp_seq), TPS("cpuqs")); 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 793 __this_cpu_write(rcu_data.cpu_no_qs.b.norm, false); 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 794 if (!__this_cpu_read(rcu_data.cpu_no_qs.b.exp)) 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 795 return; 45975c7d21a1c0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-02 796 __this_cpu_write(rcu_data.cpu_no_qs.b.exp, false); 63d4c8c97948b0 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-07-03 797 rcu_report_exp_rdp(this_cpu_ptr(&rcu_data)); d28139c4e96713 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-06-28 798 } d28139c4e96713 kernel/rcu/tree_plugin.h Paul E. McKenney 2018-06-28 799 :::::: The code at line 791 was first introduced by commit :::::: 45975c7d21a1c0aba97e3d8007e2a7c123145748 rcu: Define RCU-sched API in terms of RCU for Tree RCU PREEMPT builds :::::: TO: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com&gt; :::::: CC: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org