tree: https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git test-syscalls head: bdc621097dad9b2239e3b1d7874a29c79b0549bc commit: 688161e6c95322b96d91107f1b98542c2fc44b97 [88/93] mips: remove unused macros config: mips-allyesconfig (attached as .config) compiler: mips-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 688161e6c95322b96d91107f1b98542c2fc44b97 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=mips All errors (new ones prefixed by >>): In file included from kernel/trace/trace.c:48:0: >> kernel/trace/trace.h:243:53: error: 'NR_syscalls' undeclared here (not in a function); did you mean '__NR_syscalls'? struct trace_event_file __rcu *enter_syscall_files[NR_syscalls]; ^~~~~~~~~~~ __NR_syscalls -- In file included from kernel/trace/trace_output.h:6:0, from kernel/trace/trace_syscalls.c:12: >> kernel/trace/trace.h:243:53: error: 'NR_syscalls' undeclared here (not in a function); did you mean '__NR_syscalls'? struct trace_event_file __rcu *enter_syscall_files[NR_syscalls]; ^~~~~~~~~~~ __NR_syscalls In file included from include/linux/smp.h:11:0, from include/linux/tracepoint.h:17, from include/trace/syscall.h:5, from kernel/trace/trace_syscalls.c:2: kernel/trace/trace_syscalls.c:559:23: warning: 'enabled_perf_exit_syscalls' defined but not used [-Wunused-variable] static DECLARE_BITMAP(enabled_perf_exit_syscalls, NR_syscalls); ^ include/linux/types.h:11:16: note: in definition of macro 'DECLARE_BITMAP' unsigned long name[BITS_TO_LONGS(bits)] ^~~~ kernel/trace/trace_syscalls.c:558:23: warning: 'enabled_perf_enter_syscalls' defined but not used [-Wunused-variable] static DECLARE_BITMAP(enabled_perf_enter_syscalls, NR_syscalls); ^ include/linux/types.h:11:16: note: in definition of macro 'DECLARE_BITMAP' unsigned long name[BITS_TO_LONGS(bits)] ^~~~ vim +243 kernel/trace/trace.h 490901078 Steven Rostedt (Red Hat 2015-09-24 196) bc0c38d13 Steven Rostedt 2008-05-12 197 /* bc0c38d13 Steven Rostedt 2008-05-12 198 * The trace array - an array of per-CPU trace arrays. This is the bc0c38d13 Steven Rostedt 2008-05-12 199 * highest level data structure that individual tracers deal with. bc0c38d13 Steven Rostedt 2008-05-12 200 * They have on/off state as well: bc0c38d13 Steven Rostedt 2008-05-12 201 */ bc0c38d13 Steven Rostedt 2008-05-12 202 struct trace_array { ae63b31e4 Steven Rostedt 2012-05-03 203 struct list_head list; 277ba0446 Steven Rostedt 2012-08-03 204 char *name; 12883efb6 Steven Rostedt (Red Hat 2013-03-05 205) struct trace_buffer trace_buffer; 12883efb6 Steven Rostedt (Red Hat 2013-03-05 206) #ifdef CONFIG_TRACER_MAX_TRACE 12883efb6 Steven Rostedt (Red Hat 2013-03-05 207) /* 12883efb6 Steven Rostedt (Red Hat 2013-03-05 208) * The max_buffer is used to snapshot the trace when a maximum 12883efb6 Steven Rostedt (Red Hat 2013-03-05 209) * latency is reached, or when the user initiates a snapshot. 12883efb6 Steven Rostedt (Red Hat 2013-03-05 210) * Some tracers will use this to store a maximum trace while 12883efb6 Steven Rostedt (Red Hat 2013-03-05 211) * it continues examining live traces. 12883efb6 Steven Rostedt (Red Hat 2013-03-05 212) * 12883efb6 Steven Rostedt (Red Hat 2013-03-05 213) * The buffers for the max_buffer are set up the same as the trace_buffer 12883efb6 Steven Rostedt (Red Hat 2013-03-05 214) * When a snapshot is taken, the buffer of the max_buffer is swapped 12883efb6 Steven Rostedt (Red Hat 2013-03-05 215) * with the buffer of the trace_buffer and the buffers are reset for 12883efb6 Steven Rostedt (Red Hat 2013-03-05 216) * the trace_buffer so the tracing can continue. 12883efb6 Steven Rostedt (Red Hat 2013-03-05 217) */ 12883efb6 Steven Rostedt (Red Hat 2013-03-05 218) struct trace_buffer max_buffer; 45ad21ca5 Steven Rostedt (Red Hat 2013-03-05 219) bool allocated_snapshot; f971cc9aa Steven Rostedt (Red Hat 2016-09-07 220) #endif f971cc9aa Steven Rostedt (Red Hat 2016-09-07 221) #if defined(CONFIG_TRACER_MAX_TRACE) || defined(CONFIG_HWLAT_TRACER) 6d9b3fa5e Steven Rostedt (Red Hat 2014-01-14 222) unsigned long max_latency; 12883efb6 Steven Rostedt (Red Hat 2013-03-05 223) #endif 490901078 Steven Rostedt (Red Hat 2015-09-24 224) struct trace_pid_list __rcu *filtered_pids; 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 225) /* 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 226) * max_lock is used to protect the swapping of buffers 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 227) * when taking a max snapshot. The buffers themselves are 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 228) * protected by per_cpu spinlocks. But the action of the swap 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 229) * needs its own lock. 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 230) * 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 231) * This is defined as a arch_spinlock_t in order to help 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 232) * with performance when lockdep debugging is enabled. 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 233) * 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 234) * It is also used in other places outside the update_max_tr 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 235) * so it needs to be defined outside of the 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 236) * CONFIG_TRACER_MAX_TRACE. 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 237) */ 0b9b12c1b Steven Rostedt (Red Hat 2014-01-14 238) arch_spinlock_t max_lock; 499e54705 Steven Rostedt 2012-02-22 239 int buffer_disabled; 12ab74ee0 Steven Rostedt 2012-08-08 240 #ifdef CONFIG_FTRACE_SYSCALLS 12ab74ee0 Steven Rostedt 2012-08-08 241 int sys_refcount_enter; 12ab74ee0 Steven Rostedt 2012-08-08 242 int sys_refcount_exit; 7f1d2f821 Steven Rostedt (Red Hat 2015-05-05 @243) struct trace_event_file __rcu *enter_syscall_files[NR_syscalls]; 7f1d2f821 Steven Rostedt (Red Hat 2015-05-05 244) struct trace_event_file __rcu *exit_syscall_files[NR_syscalls]; 12ab74ee0 Steven Rostedt 2012-08-08 245 #endif 2b6080f28 Steven Rostedt 2012-05-11 246 int stop_count; 2b6080f28 Steven Rostedt 2012-05-11 247 int clock_id; 37aea98b8 Steven Rostedt (Red Hat 2015-09-30 248) int nr_topts; 065e63f95 Steven Rostedt (VMware 2017-08-31 249) bool clear_trace; 2b6080f28 Steven Rostedt 2012-05-11 250 struct tracer *current_trace; 983f938ae Steven Rostedt (Red Hat 2015-09-30 251) unsigned int trace_flags; 9a38a8856 Steven Rostedt (Red Hat 2015-09-30 252) unsigned char trace_flags_index[TRACE_FLAGS_MAX_SIZE]; ae63b31e4 Steven Rostedt 2012-05-03 253 unsigned int flags; 2b6080f28 Steven Rostedt 2012-05-11 254 raw_spinlock_t start_lock; ae63b31e4 Steven Rostedt 2012-05-03 255 struct dentry *dir; 2b6080f28 Steven Rostedt 2012-05-11 256 struct dentry *options; 2b6080f28 Steven Rostedt 2012-05-11 257 struct dentry *percpu_dir; ae63b31e4 Steven Rostedt 2012-05-03 258 struct dentry *event_dir; 37aea98b8 Steven Rostedt (Red Hat 2015-09-30 259) struct trace_options *topts; ae63b31e4 Steven Rostedt 2012-05-03 260 struct list_head systems; ae63b31e4 Steven Rostedt 2012-05-03 261 struct list_head events; 3dd809536 Steven Rostedt (VMware 2018-05-09 262) struct trace_event_file *trace_marker_file; ccfe9e42e Alexander Z Lam 2013-08-08 263 cpumask_var_t tracing_cpumask; /* only trace on set CPUs */ a695cb581 Steven Rostedt (Red Hat 2013-03-06 264) int ref; f20a58062 Steven Rostedt (Red Hat 2013-11-07 265) #ifdef CONFIG_FUNCTION_TRACER f20a58062 Steven Rostedt (Red Hat 2013-11-07 266) struct ftrace_ops *ops; 345ddcc88 Steven Rostedt (Red Hat 2016-04-22 267) struct trace_pid_list __rcu *function_pids; 04ec7bb64 Steven Rostedt (VMware 2017-04-05 268) #ifdef CONFIG_DYNAMIC_FTRACE 673feb9d7 Steven Rostedt (VMware 2017-06-23 269) /* All of these are protected by the ftrace_lock */ 04ec7bb64 Steven Rostedt (VMware 2017-04-05 270) struct list_head func_probes; 673feb9d7 Steven Rostedt (VMware 2017-06-23 271) struct list_head mod_trace; 673feb9d7 Steven Rostedt (VMware 2017-06-23 272) struct list_head mod_notrace; 04ec7bb64 Steven Rostedt (VMware 2017-04-05 273) #endif f20a58062 Steven Rostedt (Red Hat 2013-11-07 274) /* function tracing enabled */ f20a58062 Steven Rostedt (Red Hat 2013-11-07 275) int function_enabled; f20a58062 Steven Rostedt (Red Hat 2013-11-07 276) #endif 00b414529 Tom Zanussi 2018-01-15 277 int time_stamp_abs_ref; 067fe038e Tom Zanussi 2018-01-15 278 struct list_head hist_vars; bc0c38d13 Steven Rostedt 2008-05-12 279 }; bc0c38d13 Steven Rostedt 2008-05-12 280 :::::: The code at line 243 was first introduced by commit :::::: 7f1d2f8210195c8c309d424a77dbf06a6d2186f4 tracing: Rename ftrace_event_file to trace_event_file :::::: TO: Steven Rostedt (Red Hat) <rostedt@xxxxxxxxxxx> :::::: CC: Steven Rostedt <rostedt@xxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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