1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 229c00b4aSPaul E. McKenney #undef TRACE_SYSTEM 329c00b4aSPaul E. McKenney #define TRACE_SYSTEM rcu 429c00b4aSPaul E. McKenney 529c00b4aSPaul E. McKenney #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ) 629c00b4aSPaul E. McKenney #define _TRACE_RCU_H 729c00b4aSPaul E. McKenney 829c00b4aSPaul E. McKenney #include <linux/tracepoint.h> 929c00b4aSPaul E. McKenney 1029c00b4aSPaul E. McKenney /* 11300df91cSPaul E. McKenney * Tracepoint for start/end markers used for utilization calculations. 12300df91cSPaul E. McKenney * By convention, the string is of the following forms: 13300df91cSPaul E. McKenney * 14300df91cSPaul E. McKenney * "Start <activity>" -- Mark the start of the specified activity, 15300df91cSPaul E. McKenney * such as "context switch". Nesting is permitted. 16300df91cSPaul E. McKenney * "End <activity>" -- Mark the end of the specified activity. 17385680a9SPaul E. McKenney * 18385680a9SPaul E. McKenney * An "@" character within "<activity>" is a comment character: Data 19385680a9SPaul E. McKenney * reduction scripts will ignore the "@" and the remainder of the line. 20300df91cSPaul E. McKenney */ 21300df91cSPaul E. McKenney TRACE_EVENT(rcu_utilization, 22300df91cSPaul E. McKenney 23e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *s), 24300df91cSPaul E. McKenney 25300df91cSPaul E. McKenney TP_ARGS(s), 26300df91cSPaul E. McKenney 27300df91cSPaul E. McKenney TP_STRUCT__entry( 28e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 29300df91cSPaul E. McKenney ), 30300df91cSPaul E. McKenney 31300df91cSPaul E. McKenney TP_fast_assign( 32300df91cSPaul E. McKenney __entry->s = s; 33300df91cSPaul E. McKenney ), 34300df91cSPaul E. McKenney 35300df91cSPaul E. McKenney TP_printk("%s", __entry->s) 36300df91cSPaul E. McKenney ); 37300df91cSPaul E. McKenney 38d4c08f2aSPaul E. McKenney #ifdef CONFIG_RCU_TRACE 39d4c08f2aSPaul E. McKenney 4028f6569aSPranith Kumar #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) 41d4c08f2aSPaul E. McKenney 42d4c08f2aSPaul E. McKenney /* 4363c4db78SPaul E. McKenney * Tracepoint for grace-period events. Takes a string identifying the 4463c4db78SPaul E. McKenney * RCU flavor, the grace-period number, and a string identifying the 4563c4db78SPaul E. McKenney * grace-period-related event as follows: 4663c4db78SPaul E. McKenney * 4763c4db78SPaul E. McKenney * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. 4863c4db78SPaul E. McKenney * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. 49bb311eccSPaul E. McKenney * "newreq": Request a new grace period. 5063c4db78SPaul E. McKenney * "start": Start a grace period. 5163c4db78SPaul E. McKenney * "cpustart": CPU first notices a grace-period start. 5263c4db78SPaul E. McKenney * "cpuqs": CPU passes through a quiescent state. 5363c4db78SPaul E. McKenney * "cpuonl": CPU comes online. 5463c4db78SPaul E. McKenney * "cpuofl": CPU goes offline. 5563c4db78SPaul E. McKenney * "reqwait": GP kthread sleeps waiting for grace-period request. 5663c4db78SPaul E. McKenney * "reqwaitsig": GP kthread awakened by signal from reqwait state. 5763c4db78SPaul E. McKenney * "fqswait": GP kthread waiting until time to force quiescent states. 5863c4db78SPaul E. McKenney * "fqsstart": GP kthread starts forcing quiescent states. 5963c4db78SPaul E. McKenney * "fqsend": GP kthread done forcing quiescent states. 6063c4db78SPaul E. McKenney * "fqswaitsig": GP kthread awakened by signal from fqswait state. 6163c4db78SPaul E. McKenney * "end": End a grace period. 6263c4db78SPaul E. McKenney * "cpuend": CPU first notices a grace-period end. 63d4c08f2aSPaul E. McKenney */ 64d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period, 65d4c08f2aSPaul E. McKenney 66e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent), 67d4c08f2aSPaul E. McKenney 68d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, gpevent), 69d4c08f2aSPaul E. McKenney 70d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 71e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 72d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 73e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 74d4c08f2aSPaul E. McKenney ), 75d4c08f2aSPaul E. McKenney 76d4c08f2aSPaul E. McKenney TP_fast_assign( 77d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 78d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 79d4c08f2aSPaul E. McKenney __entry->gpevent = gpevent; 80d4c08f2aSPaul E. McKenney ), 81d4c08f2aSPaul E. McKenney 82d4c08f2aSPaul E. McKenney TP_printk("%s %lu %s", 83d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->gpevent) 84d4c08f2aSPaul E. McKenney ); 85d4c08f2aSPaul E. McKenney 86d4c08f2aSPaul E. McKenney /* 87bd9f0686SPaul E. McKenney * Tracepoint for future grace-period events, including those for no-callbacks 88bd9f0686SPaul E. McKenney * CPUs. The caller should pull the data from the rcu_node structure, 89bd9f0686SPaul E. McKenney * other than rcuname, which comes from the rcu_state structure, and event, 90bd9f0686SPaul E. McKenney * which is one of the following: 9109c7b890SPaul E. McKenney * 9209c7b890SPaul E. McKenney * "Startleaf": Request a nocb grace period based on leaf-node data. 9309c7b890SPaul E. McKenney * "Startedleaf": Leaf-node start proved sufficient. 9409c7b890SPaul E. McKenney * "Startedleafroot": Leaf-node start proved sufficient after checking root. 9509c7b890SPaul E. McKenney * "Startedroot": Requested a nocb grace period based on root-node data. 9609c7b890SPaul E. McKenney * "StartWait": Start waiting for the requested grace period. 9709c7b890SPaul E. McKenney * "ResumeWait": Resume waiting after signal. 9809c7b890SPaul E. McKenney * "EndWait": Complete wait. 9909c7b890SPaul E. McKenney * "Cleanup": Clean up rcu_node structure after previous GP. 10009c7b890SPaul E. McKenney * "CleanupMore": Clean up, and another no-CB GP is needed. 10109c7b890SPaul E. McKenney */ 102bd9f0686SPaul E. McKenney TRACE_EVENT(rcu_future_grace_period, 10309c7b890SPaul E. McKenney 104e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed, 10509c7b890SPaul E. McKenney unsigned long c, u8 level, int grplo, int grphi, 106e66c33d5SSteven Rostedt (Red Hat) const char *gpevent), 10709c7b890SPaul E. McKenney 10809c7b890SPaul E. McKenney TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent), 10909c7b890SPaul E. McKenney 11009c7b890SPaul E. McKenney TP_STRUCT__entry( 111e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 11209c7b890SPaul E. McKenney __field(unsigned long, gpnum) 11309c7b890SPaul E. McKenney __field(unsigned long, completed) 11409c7b890SPaul E. McKenney __field(unsigned long, c) 11509c7b890SPaul E. McKenney __field(u8, level) 11609c7b890SPaul E. McKenney __field(int, grplo) 11709c7b890SPaul E. McKenney __field(int, grphi) 118e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 11909c7b890SPaul E. McKenney ), 12009c7b890SPaul E. McKenney 12109c7b890SPaul E. McKenney TP_fast_assign( 12209c7b890SPaul E. McKenney __entry->rcuname = rcuname; 12309c7b890SPaul E. McKenney __entry->gpnum = gpnum; 12409c7b890SPaul E. McKenney __entry->completed = completed; 12509c7b890SPaul E. McKenney __entry->c = c; 12609c7b890SPaul E. McKenney __entry->level = level; 12709c7b890SPaul E. McKenney __entry->grplo = grplo; 12809c7b890SPaul E. McKenney __entry->grphi = grphi; 12909c7b890SPaul E. McKenney __entry->gpevent = gpevent; 13009c7b890SPaul E. McKenney ), 13109c7b890SPaul E. McKenney 13209c7b890SPaul E. McKenney TP_printk("%s %lu %lu %lu %u %d %d %s", 13309c7b890SPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->completed, 13409c7b890SPaul E. McKenney __entry->c, __entry->level, __entry->grplo, __entry->grphi, 13509c7b890SPaul E. McKenney __entry->gpevent) 13609c7b890SPaul E. McKenney ); 13709c7b890SPaul E. McKenney 13809c7b890SPaul E. McKenney /* 139d4c08f2aSPaul E. McKenney * Tracepoint for grace-period-initialization events. These are 140d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the new grace-period number, the 141d4c08f2aSPaul E. McKenney * rcu_node structure level, the starting and ending CPU covered by the 142d4c08f2aSPaul E. McKenney * rcu_node structure, and the mask of CPUs that will be waited for. 143d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 144d4c08f2aSPaul E. McKenney */ 145d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period_init, 146d4c08f2aSPaul E. McKenney 147e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level, 148d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 149d4c08f2aSPaul E. McKenney 150d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), 151d4c08f2aSPaul E. McKenney 152d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 153e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 154d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 155d4c08f2aSPaul E. McKenney __field(u8, level) 156d4c08f2aSPaul E. McKenney __field(int, grplo) 157d4c08f2aSPaul E. McKenney __field(int, grphi) 158d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 159d4c08f2aSPaul E. McKenney ), 160d4c08f2aSPaul E. McKenney 161d4c08f2aSPaul E. McKenney TP_fast_assign( 162d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 163d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 164d4c08f2aSPaul E. McKenney __entry->level = level; 165d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 166d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 167d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 168d4c08f2aSPaul E. McKenney ), 169d4c08f2aSPaul E. McKenney 170d4c08f2aSPaul E. McKenney TP_printk("%s %lu %u %d %d %lx", 171d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->level, 172d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->qsmask) 173d4c08f2aSPaul E. McKenney ); 174d4c08f2aSPaul E. McKenney 175d4c08f2aSPaul E. McKenney /* 176e087816dSPaul E. McKenney * Tracepoint for expedited grace-period events. Takes a string identifying 177e087816dSPaul E. McKenney * the RCU flavor, the expedited grace-period sequence number, and a string 178e087816dSPaul E. McKenney * identifying the grace-period-related event as follows: 179e087816dSPaul E. McKenney * 180e087816dSPaul E. McKenney * "snap": Captured snapshot of expedited grace period sequence number. 181e087816dSPaul E. McKenney * "start": Started a real expedited grace period. 182e087816dSPaul E. McKenney * "end": Ended a real expedited grace period. 183f6a12f34SPaul E. McKenney * "endwake": Woke piggybackers up. 184e087816dSPaul E. McKenney * "done": Someone else did the expedited grace period for us. 185e087816dSPaul E. McKenney */ 186e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_grace_period, 187e087816dSPaul E. McKenney 188e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), 189e087816dSPaul E. McKenney 190e087816dSPaul E. McKenney TP_ARGS(rcuname, gpseq, gpevent), 191e087816dSPaul E. McKenney 192e087816dSPaul E. McKenney TP_STRUCT__entry( 193e087816dSPaul E. McKenney __field(const char *, rcuname) 194e087816dSPaul E. McKenney __field(unsigned long, gpseq) 195e087816dSPaul E. McKenney __field(const char *, gpevent) 196e087816dSPaul E. McKenney ), 197e087816dSPaul E. McKenney 198e087816dSPaul E. McKenney TP_fast_assign( 199e087816dSPaul E. McKenney __entry->rcuname = rcuname; 200e087816dSPaul E. McKenney __entry->gpseq = gpseq; 201e087816dSPaul E. McKenney __entry->gpevent = gpevent; 202e087816dSPaul E. McKenney ), 203e087816dSPaul E. McKenney 204e087816dSPaul E. McKenney TP_printk("%s %lu %s", 205e087816dSPaul E. McKenney __entry->rcuname, __entry->gpseq, __entry->gpevent) 206e087816dSPaul E. McKenney ); 207e087816dSPaul E. McKenney 208e087816dSPaul E. McKenney /* 209e087816dSPaul E. McKenney * Tracepoint for expedited grace-period funnel-locking events. Takes a 210e087816dSPaul E. McKenney * string identifying the RCU flavor, an integer identifying the rcu_node 211e087816dSPaul E. McKenney * combining-tree level, another pair of integers identifying the lowest- 212e087816dSPaul E. McKenney * and highest-numbered CPU associated with the current rcu_node structure, 213e087816dSPaul E. McKenney * and a string. identifying the grace-period-related event as follows: 214e087816dSPaul E. McKenney * 215f6a12f34SPaul E. McKenney * "nxtlvl": Advance to next level of rcu_node funnel 216f6a12f34SPaul E. McKenney * "wait": Wait for someone else to do expedited GP 217e087816dSPaul E. McKenney */ 218e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_funnel_lock, 219e087816dSPaul E. McKenney 220e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, 221e087816dSPaul E. McKenney const char *gpevent), 222e087816dSPaul E. McKenney 223e087816dSPaul E. McKenney TP_ARGS(rcuname, level, grplo, grphi, gpevent), 224e087816dSPaul E. McKenney 225e087816dSPaul E. McKenney TP_STRUCT__entry( 226e087816dSPaul E. McKenney __field(const char *, rcuname) 227e087816dSPaul E. McKenney __field(u8, level) 228e087816dSPaul E. McKenney __field(int, grplo) 229e087816dSPaul E. McKenney __field(int, grphi) 230e087816dSPaul E. McKenney __field(const char *, gpevent) 231e087816dSPaul E. McKenney ), 232e087816dSPaul E. McKenney 233e087816dSPaul E. McKenney TP_fast_assign( 234e087816dSPaul E. McKenney __entry->rcuname = rcuname; 235e087816dSPaul E. McKenney __entry->level = level; 236e087816dSPaul E. McKenney __entry->grplo = grplo; 237e087816dSPaul E. McKenney __entry->grphi = grphi; 238e087816dSPaul E. McKenney __entry->gpevent = gpevent; 239e087816dSPaul E. McKenney ), 240e087816dSPaul E. McKenney 241e087816dSPaul E. McKenney TP_printk("%s %d %d %d %s", 242e087816dSPaul E. McKenney __entry->rcuname, __entry->level, __entry->grplo, 243e087816dSPaul E. McKenney __entry->grphi, __entry->gpevent) 244e087816dSPaul E. McKenney ); 245e087816dSPaul E. McKenney 246e087816dSPaul E. McKenney /* 2479261dd0dSPaul E. McKenney * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended 2489261dd0dSPaul E. McKenney * to assist debugging of these handoffs. 2499261dd0dSPaul E. McKenney * 2509261dd0dSPaul E. McKenney * The first argument is the name of the RCU flavor, and the second is 2519261dd0dSPaul E. McKenney * the number of the offloaded CPU are extracted. The third and final 2529261dd0dSPaul E. McKenney * argument is a string as follows: 2539261dd0dSPaul E. McKenney * 2549261dd0dSPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 2559fdd3bc9SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 2569261dd0dSPaul E. McKenney * "WakeOvf": Wake rcuo kthread, CB list is huge. 2579fdd3bc9SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 2589261dd0dSPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 2599261dd0dSPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 2609fdd3bc9SPaul E. McKenney * "DeferredWake": Carried out the "IsDeferred" wakeup. 26169a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 26269a79bb1SPaul E. McKenney * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. 2639261dd0dSPaul E. McKenney * "WokeEmpty": rcuo kthread woke to find empty list. 2649261dd0dSPaul E. McKenney * "WokeNonEmpty": rcuo kthread woke to find non-empty list. 26569a79bb1SPaul E. McKenney * "WaitQueue": Enqueue partially done, timed wait for it to complete. 26669a79bb1SPaul E. McKenney * "WokeQueue": Partial enqueue now complete. 2679261dd0dSPaul E. McKenney */ 2689261dd0dSPaul E. McKenney TRACE_EVENT(rcu_nocb_wake, 2699261dd0dSPaul E. McKenney 2709261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2719261dd0dSPaul E. McKenney 2729261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2739261dd0dSPaul E. McKenney 2749261dd0dSPaul E. McKenney TP_STRUCT__entry( 2759261dd0dSPaul E. McKenney __field(const char *, rcuname) 2769261dd0dSPaul E. McKenney __field(int, cpu) 2779261dd0dSPaul E. McKenney __field(const char *, reason) 2789261dd0dSPaul E. McKenney ), 2799261dd0dSPaul E. McKenney 2809261dd0dSPaul E. McKenney TP_fast_assign( 2819261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2829261dd0dSPaul E. McKenney __entry->cpu = cpu; 2839261dd0dSPaul E. McKenney __entry->reason = reason; 2849261dd0dSPaul E. McKenney ), 2859261dd0dSPaul E. McKenney 2869261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 2879261dd0dSPaul E. McKenney ); 2889261dd0dSPaul E. McKenney 2899261dd0dSPaul E. McKenney /* 290d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 291d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 292d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 293d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 294d4c08f2aSPaul E. McKenney */ 295d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 296d4c08f2aSPaul E. McKenney 297e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), 298d4c08f2aSPaul E. McKenney 299d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, pid, gpnum), 300d4c08f2aSPaul E. McKenney 301d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 302e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 303d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 304d4c08f2aSPaul E. McKenney __field(int, pid) 305d4c08f2aSPaul E. McKenney ), 306d4c08f2aSPaul E. McKenney 307d4c08f2aSPaul E. McKenney TP_fast_assign( 308d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 309d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 310d4c08f2aSPaul E. McKenney __entry->pid = pid; 311d4c08f2aSPaul E. McKenney ), 312d4c08f2aSPaul E. McKenney 313d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 314d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->pid) 315d4c08f2aSPaul E. McKenney ); 316d4c08f2aSPaul E. McKenney 317d4c08f2aSPaul E. McKenney /* 318d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 319d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 320d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 321d4c08f2aSPaul E. McKenney */ 322d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 323d4c08f2aSPaul E. McKenney 324e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), 325d4c08f2aSPaul E. McKenney 326d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, pid), 327d4c08f2aSPaul E. McKenney 328d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 329e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 330d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 331d4c08f2aSPaul E. McKenney __field(int, pid) 332d4c08f2aSPaul E. McKenney ), 333d4c08f2aSPaul E. McKenney 334d4c08f2aSPaul E. McKenney TP_fast_assign( 335d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 336d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 337d4c08f2aSPaul E. McKenney __entry->pid = pid; 338d4c08f2aSPaul E. McKenney ), 339d4c08f2aSPaul E. McKenney 340d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) 341d4c08f2aSPaul E. McKenney ); 342d4c08f2aSPaul E. McKenney 343d4c08f2aSPaul E. McKenney /* 344d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 345d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 346d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 347d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 348d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 349d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 350d4c08f2aSPaul E. McKenney */ 351d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 352d4c08f2aSPaul E. McKenney 353e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, 354d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 355d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 356d4c08f2aSPaul E. McKenney 357d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 358d4c08f2aSPaul E. McKenney 359d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 360e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 361d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 362d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 363d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 364d4c08f2aSPaul E. McKenney __field(u8, level) 365d4c08f2aSPaul E. McKenney __field(int, grplo) 366d4c08f2aSPaul E. McKenney __field(int, grphi) 367d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 368d4c08f2aSPaul E. McKenney ), 369d4c08f2aSPaul E. McKenney 370d4c08f2aSPaul E. McKenney TP_fast_assign( 371d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 372d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 373d4c08f2aSPaul E. McKenney __entry->mask = mask; 374d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 375d4c08f2aSPaul E. McKenney __entry->level = level; 376d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 377d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 378d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 379d4c08f2aSPaul E. McKenney ), 380d4c08f2aSPaul E. McKenney 381d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 382d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 383d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 384d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 385d4c08f2aSPaul E. McKenney ); 386d4c08f2aSPaul E. McKenney 387d4c08f2aSPaul E. McKenney /* 388d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 3893a19b46aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number that 3903a19b46aSPaul E. McKenney * was blocked by the CPU, the CPU itself, and the type of quiescent state, 3913a19b46aSPaul E. McKenney * which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, "kick" 3923a19b46aSPaul E. McKenney * when kicking a CPU that has been in dyntick-idle mode for too long, or 3933a19b46aSPaul E. McKenney * "rqc" if the CPU got a quiescent state via its rcu_qs_ctr. 394d4c08f2aSPaul E. McKenney */ 395d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 396d4c08f2aSPaul E. McKenney 397e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), 398d4c08f2aSPaul E. McKenney 399d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 400d4c08f2aSPaul E. McKenney 401d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 402e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 403d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 404d4c08f2aSPaul E. McKenney __field(int, cpu) 405e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 406d4c08f2aSPaul E. McKenney ), 407d4c08f2aSPaul E. McKenney 408d4c08f2aSPaul E. McKenney TP_fast_assign( 409d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 410d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 411d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 412d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 413d4c08f2aSPaul E. McKenney ), 414d4c08f2aSPaul E. McKenney 415d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 416d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 417d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 418d4c08f2aSPaul E. McKenney ); 419d4c08f2aSPaul E. McKenney 42028f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 421d4c08f2aSPaul E. McKenney 422d4c08f2aSPaul E. McKenney /* 423d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 424bd2b879aSPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "Startirq" for 425bd2b879aSPaul E. McKenney * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it 426bd2b879aSPaul E. McKenney * to irq/NMI, "--=" for events moving towards idle, and "++=" for events 427bd2b879aSPaul E. McKenney * moving away from idle. "Error on entry: not idle task" and "Error 428bd2b879aSPaul E. McKenney * on exit: not idle task" indicate that a non-idle task is erroneously 429045fb931SPaul E. McKenney * toying with the idle loop. 430045fb931SPaul E. McKenney * 431045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 432045fb931SPaul E. McKenney * depth before and after the event of interest. Note that task-related 433bd2b879aSPaul E. McKenney * and interrupt-related events use two separate counters, and that the 434bd2b879aSPaul E. McKenney * "++=" and "--=" events for irq/NMI will change the counter by two, 435bd2b879aSPaul E. McKenney * otherwise by one. 436d4c08f2aSPaul E. McKenney */ 437d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 438d4c08f2aSPaul E. McKenney 439e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), 440d4c08f2aSPaul E. McKenney 4414145fa7fSPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting), 442d4c08f2aSPaul E. McKenney 443d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 444e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 4454145fa7fSPaul E. McKenney __field(long long, oldnesting) 4464145fa7fSPaul E. McKenney __field(long long, newnesting) 447d4c08f2aSPaul E. McKenney ), 448d4c08f2aSPaul E. McKenney 449d4c08f2aSPaul E. McKenney TP_fast_assign( 450d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4514145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4524145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 453d4c08f2aSPaul E. McKenney ), 454d4c08f2aSPaul E. McKenney 4554145fa7fSPaul E. McKenney TP_printk("%s %llx %llx", __entry->polarity, 4564145fa7fSPaul E. McKenney __entry->oldnesting, __entry->newnesting) 457d4c08f2aSPaul E. McKenney ); 458d4c08f2aSPaul E. McKenney 459d4c08f2aSPaul E. McKenney /* 460433cdddcSPaul E. McKenney * Tracepoint for RCU preparation for idle, the goal being to get RCU 461433cdddcSPaul E. McKenney * processing done so that the current CPU can shut off its scheduling 462433cdddcSPaul E. McKenney * clock and enter dyntick-idle mode. One way to accomplish this is 463433cdddcSPaul E. McKenney * to drain all RCU callbacks from this CPU, and the other is to have 464433cdddcSPaul E. McKenney * done everything RCU requires for the current grace period. In this 465433cdddcSPaul E. McKenney * latter case, the CPU will be awakened at the end of the current grace 466433cdddcSPaul E. McKenney * period in order to process the remainder of its callbacks. 467433cdddcSPaul E. McKenney * 468433cdddcSPaul E. McKenney * These tracepoints take a string as argument: 469433cdddcSPaul E. McKenney * 470433cdddcSPaul E. McKenney * "No callbacks": Nothing to do, no callbacks on this CPU. 471433cdddcSPaul E. McKenney * "In holdoff": Nothing to do, holding off after unsuccessful attempt. 472433cdddcSPaul E. McKenney * "Begin holdoff": Attempt failed, don't retry until next jiffy. 4737cb92499SPaul E. McKenney * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. 474fd4b3526SPaul E. McKenney * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. 475433cdddcSPaul E. McKenney * "More callbacks": Still more callbacks, try again to clear them out. 476433cdddcSPaul E. McKenney * "Callbacks drained": All callbacks processed, off to dyntick idle! 4777cb92499SPaul E. McKenney * "Timer": Timer fired to cause CPU to continue processing callbacks. 47821e52e15SPaul E. McKenney * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. 4792fdbb31bSPaul E. McKenney * "Cleanup after idle": Idle exited, timer canceled. 480433cdddcSPaul E. McKenney */ 481433cdddcSPaul E. McKenney TRACE_EVENT(rcu_prep_idle, 482433cdddcSPaul E. McKenney 483e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *reason), 484433cdddcSPaul E. McKenney 485433cdddcSPaul E. McKenney TP_ARGS(reason), 486433cdddcSPaul E. McKenney 487433cdddcSPaul E. McKenney TP_STRUCT__entry( 488e66c33d5SSteven Rostedt (Red Hat) __field(const char *, reason) 489433cdddcSPaul E. McKenney ), 490433cdddcSPaul E. McKenney 491433cdddcSPaul E. McKenney TP_fast_assign( 492433cdddcSPaul E. McKenney __entry->reason = reason; 493433cdddcSPaul E. McKenney ), 494433cdddcSPaul E. McKenney 495433cdddcSPaul E. McKenney TP_printk("%s", __entry->reason) 496433cdddcSPaul E. McKenney ); 497433cdddcSPaul E. McKenney 498433cdddcSPaul E. McKenney /* 499d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 500d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 501486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 502486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 503486e2593SPaul E. McKenney * total number of callbacks queued. 504d4c08f2aSPaul E. McKenney */ 505d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 506d4c08f2aSPaul E. McKenney 507e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 508486e2593SPaul E. McKenney long qlen), 509d4c08f2aSPaul E. McKenney 510486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 511d4c08f2aSPaul E. McKenney 512d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 513e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 514d4c08f2aSPaul E. McKenney __field(void *, rhp) 515d4c08f2aSPaul E. McKenney __field(void *, func) 516486e2593SPaul E. McKenney __field(long, qlen_lazy) 517d4c08f2aSPaul E. McKenney __field(long, qlen) 518d4c08f2aSPaul E. McKenney ), 519d4c08f2aSPaul E. McKenney 520d4c08f2aSPaul E. McKenney TP_fast_assign( 521d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 522d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 523d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 524486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 525d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 526d4c08f2aSPaul E. McKenney ), 527d4c08f2aSPaul E. McKenney 528486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 529486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 530486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 531d4c08f2aSPaul E. McKenney ); 532d4c08f2aSPaul E. McKenney 533d4c08f2aSPaul E. McKenney /* 534d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 535d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 536d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 537d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 538486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 539486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 540d4c08f2aSPaul E. McKenney */ 541d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 542d4c08f2aSPaul E. McKenney 543e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 544486e2593SPaul E. McKenney long qlen_lazy, long qlen), 545d4c08f2aSPaul E. McKenney 546486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 547d4c08f2aSPaul E. McKenney 548d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 549e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 550d4c08f2aSPaul E. McKenney __field(void *, rhp) 551d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 552486e2593SPaul E. McKenney __field(long, qlen_lazy) 553d4c08f2aSPaul E. McKenney __field(long, qlen) 554d4c08f2aSPaul E. McKenney ), 555d4c08f2aSPaul E. McKenney 556d4c08f2aSPaul E. McKenney TP_fast_assign( 557d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 558d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 559d4c08f2aSPaul E. McKenney __entry->offset = offset; 560486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 561d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 562d4c08f2aSPaul E. McKenney ), 563d4c08f2aSPaul E. McKenney 564486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 565d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 566486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 567d4c08f2aSPaul E. McKenney ); 568d4c08f2aSPaul E. McKenney 569300df91cSPaul E. McKenney /* 570300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 57172fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 572486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 573486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 574486e2593SPaul E. McKenney * the current RCU-callback batch limit. 57529c00b4aSPaul E. McKenney */ 57629c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 57729c00b4aSPaul E. McKenney 578e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 57929c00b4aSPaul E. McKenney 580486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 58129c00b4aSPaul E. McKenney 58229c00b4aSPaul E. McKenney TP_STRUCT__entry( 583e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 584486e2593SPaul E. McKenney __field(long, qlen_lazy) 585300df91cSPaul E. McKenney __field(long, qlen) 5863aac7a8dSPaul E. McKenney __field(long, blimit) 58729c00b4aSPaul E. McKenney ), 58829c00b4aSPaul E. McKenney 58929c00b4aSPaul E. McKenney TP_fast_assign( 59072fe701bSPaul E. McKenney __entry->rcuname = rcuname; 591486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 592300df91cSPaul E. McKenney __entry->qlen = qlen; 59329c00b4aSPaul E. McKenney __entry->blimit = blimit; 59429c00b4aSPaul E. McKenney ), 59529c00b4aSPaul E. McKenney 5963aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 597486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 598486e2593SPaul E. McKenney __entry->blimit) 59929c00b4aSPaul E. McKenney ); 60029c00b4aSPaul E. McKenney 60129c00b4aSPaul E. McKenney /* 602300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 603d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 604d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 60529c00b4aSPaul E. McKenney */ 60629c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 60729c00b4aSPaul E. McKenney 608e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 60929c00b4aSPaul E. McKenney 610d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 61129c00b4aSPaul E. McKenney 61229c00b4aSPaul E. McKenney TP_STRUCT__entry( 613e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 61429c00b4aSPaul E. McKenney __field(void *, rhp) 61529c00b4aSPaul E. McKenney __field(void *, func) 61629c00b4aSPaul E. McKenney ), 61729c00b4aSPaul E. McKenney 61829c00b4aSPaul E. McKenney TP_fast_assign( 619d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 62029c00b4aSPaul E. McKenney __entry->rhp = rhp; 62129c00b4aSPaul E. McKenney __entry->func = rhp->func; 62229c00b4aSPaul E. McKenney ), 62329c00b4aSPaul E. McKenney 624d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 625d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 62629c00b4aSPaul E. McKenney ); 62729c00b4aSPaul E. McKenney 62829c00b4aSPaul E. McKenney /* 629300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 630d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 631d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 632d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 633d4c08f2aSPaul E. McKenney * data structure. 63429c00b4aSPaul E. McKenney */ 63529c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 63629c00b4aSPaul E. McKenney 637e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 63829c00b4aSPaul E. McKenney 639d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 64029c00b4aSPaul E. McKenney 64129c00b4aSPaul E. McKenney TP_STRUCT__entry( 642e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 64329c00b4aSPaul E. McKenney __field(void *, rhp) 64429c00b4aSPaul E. McKenney __field(unsigned long, offset) 64529c00b4aSPaul E. McKenney ), 64629c00b4aSPaul E. McKenney 64729c00b4aSPaul E. McKenney TP_fast_assign( 648d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 64929c00b4aSPaul E. McKenney __entry->rhp = rhp; 65029c00b4aSPaul E. McKenney __entry->offset = offset; 65129c00b4aSPaul E. McKenney ), 65229c00b4aSPaul E. McKenney 653d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 654d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 65529c00b4aSPaul E. McKenney ); 65629c00b4aSPaul E. McKenney 65729c00b4aSPaul E. McKenney /* 658300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6594968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6604968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6614968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6624968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6634968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6644968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6654968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6664968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 66729c00b4aSPaul E. McKenney */ 66829c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 66929c00b4aSPaul E. McKenney 670e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 67115f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 67229c00b4aSPaul E. McKenney 6734968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 67429c00b4aSPaul E. McKenney 67529c00b4aSPaul E. McKenney TP_STRUCT__entry( 676e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 67729c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 67815f5191bSPaul E. McKenney __field(char, cb) 67915f5191bSPaul E. McKenney __field(char, nr) 68015f5191bSPaul E. McKenney __field(char, iit) 68115f5191bSPaul E. McKenney __field(char, risk) 68229c00b4aSPaul E. McKenney ), 68329c00b4aSPaul E. McKenney 68429c00b4aSPaul E. McKenney TP_fast_assign( 68572fe701bSPaul E. McKenney __entry->rcuname = rcuname; 68629c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6874968c300SPaul E. McKenney __entry->cb = cb; 6884968c300SPaul E. McKenney __entry->nr = nr; 6894968c300SPaul E. McKenney __entry->iit = iit; 6904968c300SPaul E. McKenney __entry->risk = risk; 69129c00b4aSPaul E. McKenney ), 69229c00b4aSPaul E. McKenney 6934968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6944968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6954968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6964968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6974968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6984968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 69929c00b4aSPaul E. McKenney ); 70029c00b4aSPaul E. McKenney 70191afaf30SPaul E. McKenney /* 70291afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 70391afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 704d0af39e8SPaul E. McKenney * is the callback address. The third argument is the start time in 705d0af39e8SPaul E. McKenney * seconds, and the last two arguments are the grace period numbers 706d0af39e8SPaul E. McKenney * at the beginning and end of the read, respectively. Note that the 707d0af39e8SPaul E. McKenney * callback address can be NULL. 70891afaf30SPaul E. McKenney */ 709b3c98314SPaul E. McKenney #define RCUTORTURENAME_LEN 8 71091afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 71191afaf30SPaul E. McKenney 712e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 71352494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 71491afaf30SPaul E. McKenney 71552494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 71691afaf30SPaul E. McKenney 71791afaf30SPaul E. McKenney TP_STRUCT__entry( 718b3c98314SPaul E. McKenney __field(char, rcutorturename[RCUTORTURENAME_LEN]) 71991afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 72052494535SPaul E. McKenney __field(unsigned long, secs) 72152494535SPaul E. McKenney __field(unsigned long, c_old) 72252494535SPaul E. McKenney __field(unsigned long, c) 72391afaf30SPaul E. McKenney ), 72491afaf30SPaul E. McKenney 72591afaf30SPaul E. McKenney TP_fast_assign( 726b3c98314SPaul E. McKenney strncpy(__entry->rcutorturename, rcutorturename, 727b3c98314SPaul E. McKenney RCUTORTURENAME_LEN); 728b3c98314SPaul E. McKenney __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0; 72991afaf30SPaul E. McKenney __entry->rhp = rhp; 73052494535SPaul E. McKenney __entry->secs = secs; 73152494535SPaul E. McKenney __entry->c_old = c_old; 73252494535SPaul E. McKenney __entry->c = c; 73391afaf30SPaul E. McKenney ), 73491afaf30SPaul E. McKenney 73552494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 73652494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 73752494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 73891afaf30SPaul E. McKenney ); 73991afaf30SPaul E. McKenney 740a83eff0aSPaul E. McKenney /* 741a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 742a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 743d7e29933SPaul E. McKenney * "Begin": _rcu_barrier() started. 744d7e29933SPaul E. McKenney * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. 745d7e29933SPaul E. McKenney * "Inc1": _rcu_barrier() piggyback check counter incremented. 746d7e29933SPaul E. McKenney * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU 747d7e29933SPaul E. McKenney * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. 748d7e29933SPaul E. McKenney * "OnlineQ": _rcu_barrier() found online CPU with callbacks. 749d7e29933SPaul E. McKenney * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. 750a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 751f92c734fSPaul E. McKenney * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. 752a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 753a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 754d7e29933SPaul E. McKenney * "Inc2": _rcu_barrier() piggyback check counter incremented. 755a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 756a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 757a83eff0aSPaul E. McKenney */ 758a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 759a83eff0aSPaul E. McKenney 760e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 761a83eff0aSPaul E. McKenney 762a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 763a83eff0aSPaul E. McKenney 764a83eff0aSPaul E. McKenney TP_STRUCT__entry( 765e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 766e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 767a83eff0aSPaul E. McKenney __field(int, cpu) 768a83eff0aSPaul E. McKenney __field(int, cnt) 769a83eff0aSPaul E. McKenney __field(unsigned long, done) 770a83eff0aSPaul E. McKenney ), 771a83eff0aSPaul E. McKenney 772a83eff0aSPaul E. McKenney TP_fast_assign( 773a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 774a83eff0aSPaul E. McKenney __entry->s = s; 775a83eff0aSPaul E. McKenney __entry->cpu = cpu; 776a83eff0aSPaul E. McKenney __entry->cnt = cnt; 777a83eff0aSPaul E. McKenney __entry->done = done; 778a83eff0aSPaul E. McKenney ), 779a83eff0aSPaul E. McKenney 780a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 781a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 782a83eff0aSPaul E. McKenney __entry->done) 783a83eff0aSPaul E. McKenney ); 784a83eff0aSPaul E. McKenney 785d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 786d4c08f2aSPaul E. McKenney 787d4c08f2aSPaul E. McKenney #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) 788bd9f0686SPaul E. McKenney #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ 78909c7b890SPaul E. McKenney level, grplo, grphi, event) \ 79009c7b890SPaul E. McKenney do { } while (0) 791e087816dSPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ 792e087816dSPaul E. McKenney qsmask) do { } while (0) 793e087816dSPaul E. McKenney #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ 794e087816dSPaul E. McKenney do { } while (0) 795e087816dSPaul E. McKenney #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ 796e087816dSPaul E. McKenney do { } while (0) 7979261dd0dSPaul E. McKenney #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) 798d4c08f2aSPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) 799d4c08f2aSPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) 800486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 801486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 802486e2593SPaul E. McKenney while (0) 803d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 8044145fa7fSPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) 805433cdddcSPaul E. McKenney #define trace_rcu_prep_idle(reason) do { } while (0) 806486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 807486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 808486e2593SPaul E. McKenney do { } while (0) 809486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 810486e2593SPaul E. McKenney do { } while (0) 811d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 812d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 8134968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 8144968c300SPaul E. McKenney do { } while (0) 81552494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 81652494535SPaul E. McKenney do { } while (0) 817a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 818d4c08f2aSPaul E. McKenney 819d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 820d4c08f2aSPaul E. McKenney 82129c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 82229c00b4aSPaul E. McKenney 82329c00b4aSPaul E. McKenney /* This part must be outside protection */ 82429c00b4aSPaul E. McKenney #include <trace/define_trace.h> 825