129c00b4aSPaul E. McKenney #undef TRACE_SYSTEM 229c00b4aSPaul E. McKenney #define TRACE_SYSTEM rcu 329c00b4aSPaul E. McKenney 429c00b4aSPaul E. McKenney #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ) 529c00b4aSPaul E. McKenney #define _TRACE_RCU_H 629c00b4aSPaul E. McKenney 729c00b4aSPaul E. McKenney #include <linux/tracepoint.h> 829c00b4aSPaul E. McKenney 929c00b4aSPaul E. McKenney /* 10300df91cSPaul E. McKenney * Tracepoint for start/end markers used for utilization calculations. 11300df91cSPaul E. McKenney * By convention, the string is of the following forms: 12300df91cSPaul E. McKenney * 13300df91cSPaul E. McKenney * "Start <activity>" -- Mark the start of the specified activity, 14300df91cSPaul E. McKenney * such as "context switch". Nesting is permitted. 15300df91cSPaul E. McKenney * "End <activity>" -- Mark the end of the specified activity. 16385680a9SPaul E. McKenney * 17385680a9SPaul E. McKenney * An "@" character within "<activity>" is a comment character: Data 18385680a9SPaul E. McKenney * reduction scripts will ignore the "@" and the remainder of the line. 19300df91cSPaul E. McKenney */ 20300df91cSPaul E. McKenney TRACE_EVENT(rcu_utilization, 21300df91cSPaul E. McKenney 22300df91cSPaul E. McKenney TP_PROTO(char *s), 23300df91cSPaul E. McKenney 24300df91cSPaul E. McKenney TP_ARGS(s), 25300df91cSPaul E. McKenney 26300df91cSPaul E. McKenney TP_STRUCT__entry( 27300df91cSPaul E. McKenney __field(char *, s) 28300df91cSPaul E. McKenney ), 29300df91cSPaul E. McKenney 30300df91cSPaul E. McKenney TP_fast_assign( 31300df91cSPaul E. McKenney __entry->s = s; 32300df91cSPaul E. McKenney ), 33300df91cSPaul E. McKenney 34300df91cSPaul E. McKenney TP_printk("%s", __entry->s) 35300df91cSPaul E. McKenney ); 36300df91cSPaul E. McKenney 37d4c08f2aSPaul E. McKenney #ifdef CONFIG_RCU_TRACE 38d4c08f2aSPaul E. McKenney 39d4c08f2aSPaul E. McKenney #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) 40d4c08f2aSPaul E. McKenney 41d4c08f2aSPaul E. McKenney /* 42d4c08f2aSPaul E. McKenney * Tracepoint for grace-period events: starting and ending a grace 43d4c08f2aSPaul E. McKenney * period ("start" and "end", respectively), a CPU noting the start 44d4c08f2aSPaul E. McKenney * of a new grace period or the end of an old grace period ("cpustart" 45d4c08f2aSPaul E. McKenney * and "cpuend", respectively), a CPU passing through a quiescent 46d4c08f2aSPaul E. McKenney * state ("cpuqs"), a CPU coming online or going offline ("cpuonl" 47d4c08f2aSPaul E. McKenney * and "cpuofl", respectively), and a CPU being kicked for being too 48d4c08f2aSPaul E. McKenney * long in dyntick-idle mode ("kick"). 49d4c08f2aSPaul E. McKenney */ 50d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period, 51d4c08f2aSPaul E. McKenney 52d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, unsigned long gpnum, char *gpevent), 53d4c08f2aSPaul E. McKenney 54d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, gpevent), 55d4c08f2aSPaul E. McKenney 56d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 57d4c08f2aSPaul E. McKenney __field(char *, rcuname) 58d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 59d4c08f2aSPaul E. McKenney __field(char *, gpevent) 60d4c08f2aSPaul E. McKenney ), 61d4c08f2aSPaul E. McKenney 62d4c08f2aSPaul E. McKenney TP_fast_assign( 63d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 64d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 65d4c08f2aSPaul E. McKenney __entry->gpevent = gpevent; 66d4c08f2aSPaul E. McKenney ), 67d4c08f2aSPaul E. McKenney 68d4c08f2aSPaul E. McKenney TP_printk("%s %lu %s", 69d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->gpevent) 70d4c08f2aSPaul E. McKenney ); 71d4c08f2aSPaul E. McKenney 72d4c08f2aSPaul E. McKenney /* 73d4c08f2aSPaul E. McKenney * Tracepoint for grace-period-initialization events. These are 74d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the new grace-period number, the 75d4c08f2aSPaul E. McKenney * rcu_node structure level, the starting and ending CPU covered by the 76d4c08f2aSPaul E. McKenney * rcu_node structure, and the mask of CPUs that will be waited for. 77d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 78d4c08f2aSPaul E. McKenney */ 79d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period_init, 80d4c08f2aSPaul E. McKenney 81d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, unsigned long gpnum, u8 level, 82d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 83d4c08f2aSPaul E. McKenney 84d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), 85d4c08f2aSPaul E. McKenney 86d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 87d4c08f2aSPaul E. McKenney __field(char *, rcuname) 88d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 89d4c08f2aSPaul E. McKenney __field(u8, level) 90d4c08f2aSPaul E. McKenney __field(int, grplo) 91d4c08f2aSPaul E. McKenney __field(int, grphi) 92d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 93d4c08f2aSPaul E. McKenney ), 94d4c08f2aSPaul E. McKenney 95d4c08f2aSPaul E. McKenney TP_fast_assign( 96d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 97d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 98d4c08f2aSPaul E. McKenney __entry->level = level; 99d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 100d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 101d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 102d4c08f2aSPaul E. McKenney ), 103d4c08f2aSPaul E. McKenney 104d4c08f2aSPaul E. McKenney TP_printk("%s %lu %u %d %d %lx", 105d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->level, 106d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->qsmask) 107d4c08f2aSPaul E. McKenney ); 108d4c08f2aSPaul E. McKenney 109d4c08f2aSPaul E. McKenney /* 110d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 111d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 112d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 113d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 114d4c08f2aSPaul E. McKenney */ 115d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 116d4c08f2aSPaul E. McKenney 117d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, int pid, unsigned long gpnum), 118d4c08f2aSPaul E. McKenney 119d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, pid, gpnum), 120d4c08f2aSPaul E. McKenney 121d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 122d4c08f2aSPaul E. McKenney __field(char *, rcuname) 123d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 124d4c08f2aSPaul E. McKenney __field(int, pid) 125d4c08f2aSPaul E. McKenney ), 126d4c08f2aSPaul E. McKenney 127d4c08f2aSPaul E. McKenney TP_fast_assign( 128d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 129d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 130d4c08f2aSPaul E. McKenney __entry->pid = pid; 131d4c08f2aSPaul E. McKenney ), 132d4c08f2aSPaul E. McKenney 133d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 134d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->pid) 135d4c08f2aSPaul E. McKenney ); 136d4c08f2aSPaul E. McKenney 137d4c08f2aSPaul E. McKenney /* 138d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 139d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 140d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 141d4c08f2aSPaul E. McKenney */ 142d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 143d4c08f2aSPaul E. McKenney 144d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, unsigned long gpnum, int pid), 145d4c08f2aSPaul E. McKenney 146d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, pid), 147d4c08f2aSPaul E. McKenney 148d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 149d4c08f2aSPaul E. McKenney __field(char *, rcuname) 150d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 151d4c08f2aSPaul E. McKenney __field(int, pid) 152d4c08f2aSPaul E. McKenney ), 153d4c08f2aSPaul E. McKenney 154d4c08f2aSPaul E. McKenney TP_fast_assign( 155d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 156d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 157d4c08f2aSPaul E. McKenney __entry->pid = pid; 158d4c08f2aSPaul E. McKenney ), 159d4c08f2aSPaul E. McKenney 160d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) 161d4c08f2aSPaul E. McKenney ); 162d4c08f2aSPaul E. McKenney 163d4c08f2aSPaul E. McKenney /* 164d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 165d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 166d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 167d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 168d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 169d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 170d4c08f2aSPaul E. McKenney */ 171d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 172d4c08f2aSPaul E. McKenney 173d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, unsigned long gpnum, 174d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 175d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 176d4c08f2aSPaul E. McKenney 177d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 178d4c08f2aSPaul E. McKenney 179d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 180d4c08f2aSPaul E. McKenney __field(char *, rcuname) 181d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 182d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 183d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 184d4c08f2aSPaul E. McKenney __field(u8, level) 185d4c08f2aSPaul E. McKenney __field(int, grplo) 186d4c08f2aSPaul E. McKenney __field(int, grphi) 187d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 188d4c08f2aSPaul E. McKenney ), 189d4c08f2aSPaul E. McKenney 190d4c08f2aSPaul E. McKenney TP_fast_assign( 191d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 192d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 193d4c08f2aSPaul E. McKenney __entry->mask = mask; 194d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 195d4c08f2aSPaul E. McKenney __entry->level = level; 196d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 197d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 198d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 199d4c08f2aSPaul E. McKenney ), 200d4c08f2aSPaul E. McKenney 201d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 202d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 203d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 204d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 205d4c08f2aSPaul E. McKenney ); 206d4c08f2aSPaul E. McKenney 207d4c08f2aSPaul E. McKenney /* 208d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 209d4c08f2aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number 210d4c08f2aSPaul E. McKenney * that was blocked by the CPU, the CPU itself, and the type of quiescent 211d4c08f2aSPaul E. McKenney * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, 212d4c08f2aSPaul E. McKenney * or "kick" when kicking a CPU that has been in dyntick-idle mode for 213d4c08f2aSPaul E. McKenney * too long. 214d4c08f2aSPaul E. McKenney */ 215d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 216d4c08f2aSPaul E. McKenney 217d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, unsigned long gpnum, int cpu, char *qsevent), 218d4c08f2aSPaul E. McKenney 219d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 220d4c08f2aSPaul E. McKenney 221d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 222d4c08f2aSPaul E. McKenney __field(char *, rcuname) 223d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 224d4c08f2aSPaul E. McKenney __field(int, cpu) 225d4c08f2aSPaul E. McKenney __field(char *, qsevent) 226d4c08f2aSPaul E. McKenney ), 227d4c08f2aSPaul E. McKenney 228d4c08f2aSPaul E. McKenney TP_fast_assign( 229d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 230d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 231d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 232d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 233d4c08f2aSPaul E. McKenney ), 234d4c08f2aSPaul E. McKenney 235d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 236d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 237d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 238d4c08f2aSPaul E. McKenney ); 239d4c08f2aSPaul E. McKenney 240d4c08f2aSPaul E. McKenney #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) */ 241d4c08f2aSPaul E. McKenney 242d4c08f2aSPaul E. McKenney /* 243d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 244045fb931SPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "End" for 245045fb931SPaul E. McKenney * leaving it, "--=" for events moving towards idle, and "++=" for events 246045fb931SPaul E. McKenney * moving away from idle. "Error on entry: not idle task" and "Error on 247045fb931SPaul E. McKenney * exit: not idle task" indicate that a non-idle task is erroneously 248045fb931SPaul E. McKenney * toying with the idle loop. 249045fb931SPaul E. McKenney * 250045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 251045fb931SPaul E. McKenney * depth before and after the event of interest. Note that task-related 252045fb931SPaul E. McKenney * events use the upper bits of each number, while interrupt-related 253045fb931SPaul E. McKenney * events use the lower bits. 254d4c08f2aSPaul E. McKenney */ 255d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 256d4c08f2aSPaul E. McKenney 2574145fa7fSPaul E. McKenney TP_PROTO(char *polarity, long long oldnesting, long long newnesting), 258d4c08f2aSPaul E. McKenney 2594145fa7fSPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting), 260d4c08f2aSPaul E. McKenney 261d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 262d4c08f2aSPaul E. McKenney __field(char *, polarity) 2634145fa7fSPaul E. McKenney __field(long long, oldnesting) 2644145fa7fSPaul E. McKenney __field(long long, newnesting) 265d4c08f2aSPaul E. McKenney ), 266d4c08f2aSPaul E. McKenney 267d4c08f2aSPaul E. McKenney TP_fast_assign( 268d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 2694145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 2704145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 271d4c08f2aSPaul E. McKenney ), 272d4c08f2aSPaul E. McKenney 2734145fa7fSPaul E. McKenney TP_printk("%s %llx %llx", __entry->polarity, 2744145fa7fSPaul E. McKenney __entry->oldnesting, __entry->newnesting) 275d4c08f2aSPaul E. McKenney ); 276d4c08f2aSPaul E. McKenney 277d4c08f2aSPaul E. McKenney /* 278433cdddcSPaul E. McKenney * Tracepoint for RCU preparation for idle, the goal being to get RCU 279433cdddcSPaul E. McKenney * processing done so that the current CPU can shut off its scheduling 280433cdddcSPaul E. McKenney * clock and enter dyntick-idle mode. One way to accomplish this is 281433cdddcSPaul E. McKenney * to drain all RCU callbacks from this CPU, and the other is to have 282433cdddcSPaul E. McKenney * done everything RCU requires for the current grace period. In this 283433cdddcSPaul E. McKenney * latter case, the CPU will be awakened at the end of the current grace 284433cdddcSPaul E. McKenney * period in order to process the remainder of its callbacks. 285433cdddcSPaul E. McKenney * 286433cdddcSPaul E. McKenney * These tracepoints take a string as argument: 287433cdddcSPaul E. McKenney * 288433cdddcSPaul E. McKenney * "No callbacks": Nothing to do, no callbacks on this CPU. 289433cdddcSPaul E. McKenney * "In holdoff": Nothing to do, holding off after unsuccessful attempt. 290433cdddcSPaul E. McKenney * "Begin holdoff": Attempt failed, don't retry until next jiffy. 2917cb92499SPaul E. McKenney * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. 292fd4b3526SPaul E. McKenney * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. 293433cdddcSPaul E. McKenney * "More callbacks": Still more callbacks, try again to clear them out. 294433cdddcSPaul E. McKenney * "Callbacks drained": All callbacks processed, off to dyntick idle! 2957cb92499SPaul E. McKenney * "Timer": Timer fired to cause CPU to continue processing callbacks. 29621e52e15SPaul E. McKenney * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. 2972fdbb31bSPaul E. McKenney * "Cleanup after idle": Idle exited, timer canceled. 298433cdddcSPaul E. McKenney */ 299433cdddcSPaul E. McKenney TRACE_EVENT(rcu_prep_idle, 300433cdddcSPaul E. McKenney 301433cdddcSPaul E. McKenney TP_PROTO(char *reason), 302433cdddcSPaul E. McKenney 303433cdddcSPaul E. McKenney TP_ARGS(reason), 304433cdddcSPaul E. McKenney 305433cdddcSPaul E. McKenney TP_STRUCT__entry( 306433cdddcSPaul E. McKenney __field(char *, reason) 307433cdddcSPaul E. McKenney ), 308433cdddcSPaul E. McKenney 309433cdddcSPaul E. McKenney TP_fast_assign( 310433cdddcSPaul E. McKenney __entry->reason = reason; 311433cdddcSPaul E. McKenney ), 312433cdddcSPaul E. McKenney 313433cdddcSPaul E. McKenney TP_printk("%s", __entry->reason) 314433cdddcSPaul E. McKenney ); 315433cdddcSPaul E. McKenney 316433cdddcSPaul E. McKenney /* 317d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 318d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 319486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 320486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 321486e2593SPaul E. McKenney * total number of callbacks queued. 322d4c08f2aSPaul E. McKenney */ 323d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 324d4c08f2aSPaul E. McKenney 325486e2593SPaul E. McKenney TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen_lazy, 326486e2593SPaul E. McKenney long qlen), 327d4c08f2aSPaul E. McKenney 328486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 329d4c08f2aSPaul E. McKenney 330d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 331d4c08f2aSPaul E. McKenney __field(char *, rcuname) 332d4c08f2aSPaul E. McKenney __field(void *, rhp) 333d4c08f2aSPaul E. McKenney __field(void *, func) 334486e2593SPaul E. McKenney __field(long, qlen_lazy) 335d4c08f2aSPaul E. McKenney __field(long, qlen) 336d4c08f2aSPaul E. McKenney ), 337d4c08f2aSPaul E. McKenney 338d4c08f2aSPaul E. McKenney TP_fast_assign( 339d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 340d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 341d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 342486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 343d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 344d4c08f2aSPaul E. McKenney ), 345d4c08f2aSPaul E. McKenney 346486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 347486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 348486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 349d4c08f2aSPaul E. McKenney ); 350d4c08f2aSPaul E. McKenney 351d4c08f2aSPaul E. McKenney /* 352d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 353d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 354d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 355d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 356486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 357486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 358d4c08f2aSPaul E. McKenney */ 359d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 360d4c08f2aSPaul E. McKenney 361d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset, 362486e2593SPaul E. McKenney long qlen_lazy, long qlen), 363d4c08f2aSPaul E. McKenney 364486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 365d4c08f2aSPaul E. McKenney 366d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 367d4c08f2aSPaul E. McKenney __field(char *, rcuname) 368d4c08f2aSPaul E. McKenney __field(void *, rhp) 369d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 370486e2593SPaul E. McKenney __field(long, qlen_lazy) 371d4c08f2aSPaul E. McKenney __field(long, qlen) 372d4c08f2aSPaul E. McKenney ), 373d4c08f2aSPaul E. McKenney 374d4c08f2aSPaul E. McKenney TP_fast_assign( 375d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 376d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 377d4c08f2aSPaul E. McKenney __entry->offset = offset; 378486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 379d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 380d4c08f2aSPaul E. McKenney ), 381d4c08f2aSPaul E. McKenney 382486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 383d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 384486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 385d4c08f2aSPaul E. McKenney ); 386d4c08f2aSPaul E. McKenney 387300df91cSPaul E. McKenney /* 388300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 38972fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 390486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 391486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 392486e2593SPaul E. McKenney * the current RCU-callback batch limit. 39329c00b4aSPaul E. McKenney */ 39429c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 39529c00b4aSPaul E. McKenney 396486e2593SPaul E. McKenney TP_PROTO(char *rcuname, long qlen_lazy, long qlen, int blimit), 39729c00b4aSPaul E. McKenney 398486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 39929c00b4aSPaul E. McKenney 40029c00b4aSPaul E. McKenney TP_STRUCT__entry( 40172fe701bSPaul E. McKenney __field(char *, rcuname) 402486e2593SPaul E. McKenney __field(long, qlen_lazy) 403300df91cSPaul E. McKenney __field(long, qlen) 40429c00b4aSPaul E. McKenney __field(int, blimit) 40529c00b4aSPaul E. McKenney ), 40629c00b4aSPaul E. McKenney 40729c00b4aSPaul E. McKenney TP_fast_assign( 40872fe701bSPaul E. McKenney __entry->rcuname = rcuname; 409486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 410300df91cSPaul E. McKenney __entry->qlen = qlen; 41129c00b4aSPaul E. McKenney __entry->blimit = blimit; 41229c00b4aSPaul E. McKenney ), 41329c00b4aSPaul E. McKenney 414486e2593SPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%d", 415486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 416486e2593SPaul E. McKenney __entry->blimit) 41729c00b4aSPaul E. McKenney ); 41829c00b4aSPaul E. McKenney 41929c00b4aSPaul E. McKenney /* 420300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 421d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 422d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 42329c00b4aSPaul E. McKenney */ 42429c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 42529c00b4aSPaul E. McKenney 426d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, struct rcu_head *rhp), 42729c00b4aSPaul E. McKenney 428d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 42929c00b4aSPaul E. McKenney 43029c00b4aSPaul E. McKenney TP_STRUCT__entry( 431d4c08f2aSPaul E. McKenney __field(char *, rcuname) 43229c00b4aSPaul E. McKenney __field(void *, rhp) 43329c00b4aSPaul E. McKenney __field(void *, func) 43429c00b4aSPaul E. McKenney ), 43529c00b4aSPaul E. McKenney 43629c00b4aSPaul E. McKenney TP_fast_assign( 437d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 43829c00b4aSPaul E. McKenney __entry->rhp = rhp; 43929c00b4aSPaul E. McKenney __entry->func = rhp->func; 44029c00b4aSPaul E. McKenney ), 44129c00b4aSPaul E. McKenney 442d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 443d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 44429c00b4aSPaul E. McKenney ); 44529c00b4aSPaul E. McKenney 44629c00b4aSPaul E. McKenney /* 447300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 448d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 449d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 450d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 451d4c08f2aSPaul E. McKenney * data structure. 45229c00b4aSPaul E. McKenney */ 45329c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 45429c00b4aSPaul E. McKenney 455d4c08f2aSPaul E. McKenney TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset), 45629c00b4aSPaul E. McKenney 457d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 45829c00b4aSPaul E. McKenney 45929c00b4aSPaul E. McKenney TP_STRUCT__entry( 460d4c08f2aSPaul E. McKenney __field(char *, rcuname) 46129c00b4aSPaul E. McKenney __field(void *, rhp) 46229c00b4aSPaul E. McKenney __field(unsigned long, offset) 46329c00b4aSPaul E. McKenney ), 46429c00b4aSPaul E. McKenney 46529c00b4aSPaul E. McKenney TP_fast_assign( 466d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 46729c00b4aSPaul E. McKenney __entry->rhp = rhp; 46829c00b4aSPaul E. McKenney __entry->offset = offset; 46929c00b4aSPaul E. McKenney ), 47029c00b4aSPaul E. McKenney 471d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 472d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 47329c00b4aSPaul E. McKenney ); 47429c00b4aSPaul E. McKenney 47529c00b4aSPaul E. McKenney /* 476300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 4774968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 4784968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 4794968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 4804968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 4814968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 4824968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 4834968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 4844968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 48529c00b4aSPaul E. McKenney */ 48629c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 48729c00b4aSPaul E. McKenney 4884968c300SPaul E. McKenney TP_PROTO(char *rcuname, int callbacks_invoked, 4894968c300SPaul E. McKenney bool cb, bool nr, bool iit, bool risk), 49029c00b4aSPaul E. McKenney 4914968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 49229c00b4aSPaul E. McKenney 49329c00b4aSPaul E. McKenney TP_STRUCT__entry( 49472fe701bSPaul E. McKenney __field(char *, rcuname) 49529c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 4964968c300SPaul E. McKenney __field(bool, cb) 4974968c300SPaul E. McKenney __field(bool, nr) 4984968c300SPaul E. McKenney __field(bool, iit) 4994968c300SPaul E. McKenney __field(bool, risk) 50029c00b4aSPaul E. McKenney ), 50129c00b4aSPaul E. McKenney 50229c00b4aSPaul E. McKenney TP_fast_assign( 50372fe701bSPaul E. McKenney __entry->rcuname = rcuname; 50429c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 5054968c300SPaul E. McKenney __entry->cb = cb; 5064968c300SPaul E. McKenney __entry->nr = nr; 5074968c300SPaul E. McKenney __entry->iit = iit; 5084968c300SPaul E. McKenney __entry->risk = risk; 50929c00b4aSPaul E. McKenney ), 51029c00b4aSPaul E. McKenney 5114968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 5124968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 5134968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 5144968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 5154968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 5164968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 51729c00b4aSPaul E. McKenney ); 51829c00b4aSPaul E. McKenney 51991afaf30SPaul E. McKenney /* 52091afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 52191afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 52291afaf30SPaul E. McKenney * is the callback address. 52391afaf30SPaul E. McKenney */ 52491afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 52591afaf30SPaul E. McKenney 52652494535SPaul E. McKenney TP_PROTO(char *rcutorturename, struct rcu_head *rhp, 52752494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 52891afaf30SPaul E. McKenney 52952494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 53091afaf30SPaul E. McKenney 53191afaf30SPaul E. McKenney TP_STRUCT__entry( 53291afaf30SPaul E. McKenney __field(char *, rcutorturename) 53391afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 53452494535SPaul E. McKenney __field(unsigned long, secs) 53552494535SPaul E. McKenney __field(unsigned long, c_old) 53652494535SPaul E. McKenney __field(unsigned long, c) 53791afaf30SPaul E. McKenney ), 53891afaf30SPaul E. McKenney 53991afaf30SPaul E. McKenney TP_fast_assign( 54091afaf30SPaul E. McKenney __entry->rcutorturename = rcutorturename; 54191afaf30SPaul E. McKenney __entry->rhp = rhp; 54252494535SPaul E. McKenney __entry->secs = secs; 54352494535SPaul E. McKenney __entry->c_old = c_old; 54452494535SPaul E. McKenney __entry->c = c; 54591afaf30SPaul E. McKenney ), 54691afaf30SPaul E. McKenney 54752494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 54852494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 54952494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 55091afaf30SPaul E. McKenney ); 55191afaf30SPaul E. McKenney 552a83eff0aSPaul E. McKenney /* 553a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 554a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 555a83eff0aSPaul E. McKenney * "Begin": rcu_barrier_callback() started. 556a83eff0aSPaul E. McKenney * "Check": rcu_barrier_callback() checking for piggybacking. 557a83eff0aSPaul E. McKenney * "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit. 558a83eff0aSPaul E. McKenney * "Inc1": rcu_barrier_callback() piggyback check counter incremented. 559a83eff0aSPaul E. McKenney * "Offline": rcu_barrier_callback() found offline CPU 5603fbfbf7aSPaul E. McKenney * "OnlineNoCB": rcu_barrier_callback() found online no-CBs CPU. 561a83eff0aSPaul E. McKenney * "OnlineQ": rcu_barrier_callback() found online CPU with callbacks. 562a83eff0aSPaul E. McKenney * "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks. 563a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 564a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 565a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 566a83eff0aSPaul E. McKenney * "Inc2": rcu_barrier_callback() piggyback check counter incremented. 567a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 568a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 569a83eff0aSPaul E. McKenney */ 570a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 571a83eff0aSPaul E. McKenney 572a83eff0aSPaul E. McKenney TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done), 573a83eff0aSPaul E. McKenney 574a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 575a83eff0aSPaul E. McKenney 576a83eff0aSPaul E. McKenney TP_STRUCT__entry( 577a83eff0aSPaul E. McKenney __field(char *, rcuname) 578a83eff0aSPaul E. McKenney __field(char *, s) 579a83eff0aSPaul E. McKenney __field(int, cpu) 580a83eff0aSPaul E. McKenney __field(int, cnt) 581a83eff0aSPaul E. McKenney __field(unsigned long, done) 582a83eff0aSPaul E. McKenney ), 583a83eff0aSPaul E. McKenney 584a83eff0aSPaul E. McKenney TP_fast_assign( 585a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 586a83eff0aSPaul E. McKenney __entry->s = s; 587a83eff0aSPaul E. McKenney __entry->cpu = cpu; 588a83eff0aSPaul E. McKenney __entry->cnt = cnt; 589a83eff0aSPaul E. McKenney __entry->done = done; 590a83eff0aSPaul E. McKenney ), 591a83eff0aSPaul E. McKenney 592a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 593a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 594a83eff0aSPaul E. McKenney __entry->done) 595a83eff0aSPaul E. McKenney ); 596a83eff0aSPaul E. McKenney 597d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 598d4c08f2aSPaul E. McKenney 599d4c08f2aSPaul E. McKenney #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) 600486e2593SPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ 601486e2593SPaul E. McKenney qsmask) do { } while (0) 602d4c08f2aSPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) 603d4c08f2aSPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) 604486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 605486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 606486e2593SPaul E. McKenney while (0) 607d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 6084145fa7fSPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) 609433cdddcSPaul E. McKenney #define trace_rcu_prep_idle(reason) do { } while (0) 610486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 611486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 612486e2593SPaul E. McKenney do { } while (0) 613486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 614486e2593SPaul E. McKenney do { } while (0) 615d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 616d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 6174968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 6184968c300SPaul E. McKenney do { } while (0) 61952494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 62052494535SPaul E. McKenney do { } while (0) 621a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 622d4c08f2aSPaul E. McKenney 623d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 624d4c08f2aSPaul E. McKenney 62529c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 62629c00b4aSPaul E. McKenney 62729c00b4aSPaul E. McKenney /* This part must be outside protection */ 62829c00b4aSPaul E. McKenney #include <trace/define_trace.h> 629