[kbuild-all] [jfern:rcu-segcb 3/7] kernel/rcu/tree_plugin.h:792:49: warning: passing argument 3 of 'trace_rcu_grace_period' makes integer from pointer without a cast

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: riscv-defconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 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 git checkout 6c20fe430956a44bc2034f58d55678fb8e8cff19 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/asm-generic/percpu.h:7, from ./arch/riscv/include/generated/asm/percpu.h:1, from include/asm-generic/mmiowb.h:26, from arch/riscv/include/asm/mmiowb.h:13, from include/linux/spinlock.h:60, from kernel/rcu/tree.c:23: kernel/rcu/tree_plugin.h: In function 'rcu_qs': include/linux/percpu-defs.h:444:2: warning: passing argument 2 of 'trace_rcu_grace_period' makes pointer from integer without a cast [-Wint-conversion] 444 | ({ | ~^~~~~~~~~~~ | | | long unsigned int 445 | __this_cpu_preempt_check("read"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 446 | raw_cpu_read(pcp); | ~~~~~~~~~~~~~~~~~~~~~~~~~ 447 | }) | ~~ kernel/rcu/tree_plugin.h:792:11: note: in expansion of macro '__this_cpu_read' 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)) | ^~~~~~ include/trace/events/rcu.h:13:25: note: in expansion of macro 'TRACE_EVENT_NOP' 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ include/trace/events/rcu.h:71:2: note: in expansion of macro 'TP_PROTO' 71 | TP_PROTO(const char *rcuname, const char *gp_seq_src, | ^~~~~~~~ 792 | __this_cpu_read(rcu_data.gp_seq), TPS("cpuqs")); | ^~~~~~~ | | | char * include/linux/tracepoint.h:371:33: note: in definition of macro 'tracepoint_string' 371 | # define tracepoint_string(str) str | ^~~ kernel/rcu/tree_plugin.h:792:45: note: in expansion of macro 'TPS' 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 '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)) | ^~~~~~ include/trace/events/rcu.h:13:25: note: in expansion of macro 'TRACE_EVENT_NOP' 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ include/trace/events/rcu.h:71:2: note: in expansion of macro 'TP_PROTO' 71 | TP_PROTO(const char *rcuname, const char *gp_seq_src, | ^~~~~~~~ In file included from kernel/rcu/tree.c:4281: kernel/rcu/tree_plugin.h:791:2: error: too few arguments to function 'trace_rcu_grace_period' 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) | ^~~~~~ include/linux/tracepoint.h:538:2: note: in expansion of macro 'DECLARE_EVENT_NOP' 538 | DECLARE_EVENT_NOP(name, PARAMS(proto), PARAMS(args)) | ^~~~~~~~~~~~~~~~~ include/trace/events/rcu.h:13:25: note: in expansion of macro 'TRACE_EVENT_NOP' 13 | #define TRACE_EVENT_RCU TRACE_EVENT_NOP | ^~~~~~~~~~~~~~~ include/trace/events/rcu.h:69:1: note: in expansion of macro 'TRACE_EVENT_RCU' 69 | TRACE_EVENT_RCU(rcu_grace_period, | ^~~~~~~~~~~~~~~ vim +/trace_rcu_grace_period +792 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 792 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