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 22e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *s), 23300df91cSPaul E. McKenney 24300df91cSPaul E. McKenney TP_ARGS(s), 25300df91cSPaul E. McKenney 26300df91cSPaul E. McKenney TP_STRUCT__entry( 27e66c33d5SSteven Rostedt (Red Hat) __field(const 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 3928f6569aSPranith Kumar #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) 40d4c08f2aSPaul E. McKenney 41d4c08f2aSPaul E. McKenney /* 4263c4db78SPaul E. McKenney * Tracepoint for grace-period events. Takes a string identifying the 4363c4db78SPaul E. McKenney * RCU flavor, the grace-period number, and a string identifying the 4463c4db78SPaul E. McKenney * grace-period-related event as follows: 4563c4db78SPaul E. McKenney * 4663c4db78SPaul E. McKenney * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. 4763c4db78SPaul E. McKenney * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. 48bb311eccSPaul E. McKenney * "newreq": Request a new grace period. 4963c4db78SPaul E. McKenney * "start": Start a grace period. 5063c4db78SPaul E. McKenney * "cpustart": CPU first notices a grace-period start. 5163c4db78SPaul E. McKenney * "cpuqs": CPU passes through a quiescent state. 5263c4db78SPaul E. McKenney * "cpuonl": CPU comes online. 5363c4db78SPaul E. McKenney * "cpuofl": CPU goes offline. 5463c4db78SPaul E. McKenney * "reqwait": GP kthread sleeps waiting for grace-period request. 5563c4db78SPaul E. McKenney * "reqwaitsig": GP kthread awakened by signal from reqwait state. 5663c4db78SPaul E. McKenney * "fqswait": GP kthread waiting until time to force quiescent states. 5763c4db78SPaul E. McKenney * "fqsstart": GP kthread starts forcing quiescent states. 5863c4db78SPaul E. McKenney * "fqsend": GP kthread done forcing quiescent states. 5963c4db78SPaul E. McKenney * "fqswaitsig": GP kthread awakened by signal from fqswait state. 6063c4db78SPaul E. McKenney * "end": End a grace period. 6163c4db78SPaul E. McKenney * "cpuend": CPU first notices a grace-period end. 62d4c08f2aSPaul E. McKenney */ 63d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period, 64d4c08f2aSPaul E. McKenney 65e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent), 66d4c08f2aSPaul E. McKenney 67d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, gpevent), 68d4c08f2aSPaul E. McKenney 69d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 70e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 71d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 72e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 73d4c08f2aSPaul E. McKenney ), 74d4c08f2aSPaul E. McKenney 75d4c08f2aSPaul E. McKenney TP_fast_assign( 76d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 77d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 78d4c08f2aSPaul E. McKenney __entry->gpevent = gpevent; 79d4c08f2aSPaul E. McKenney ), 80d4c08f2aSPaul E. McKenney 81d4c08f2aSPaul E. McKenney TP_printk("%s %lu %s", 82d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->gpevent) 83d4c08f2aSPaul E. McKenney ); 84d4c08f2aSPaul E. McKenney 85d4c08f2aSPaul E. McKenney /* 86bd9f0686SPaul E. McKenney * Tracepoint for future grace-period events, including those for no-callbacks 87bd9f0686SPaul E. McKenney * CPUs. The caller should pull the data from the rcu_node structure, 88bd9f0686SPaul E. McKenney * other than rcuname, which comes from the rcu_state structure, and event, 89bd9f0686SPaul E. McKenney * which is one of the following: 9009c7b890SPaul E. McKenney * 9109c7b890SPaul E. McKenney * "Startleaf": Request a nocb grace period based on leaf-node data. 9209c7b890SPaul E. McKenney * "Startedleaf": Leaf-node start proved sufficient. 9309c7b890SPaul E. McKenney * "Startedleafroot": Leaf-node start proved sufficient after checking root. 9409c7b890SPaul E. McKenney * "Startedroot": Requested a nocb grace period based on root-node data. 9509c7b890SPaul E. McKenney * "StartWait": Start waiting for the requested grace period. 9609c7b890SPaul E. McKenney * "ResumeWait": Resume waiting after signal. 9709c7b890SPaul E. McKenney * "EndWait": Complete wait. 9809c7b890SPaul E. McKenney * "Cleanup": Clean up rcu_node structure after previous GP. 9909c7b890SPaul E. McKenney * "CleanupMore": Clean up, and another no-CB GP is needed. 10009c7b890SPaul E. McKenney */ 101bd9f0686SPaul E. McKenney TRACE_EVENT(rcu_future_grace_period, 10209c7b890SPaul E. McKenney 103e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed, 10409c7b890SPaul E. McKenney unsigned long c, u8 level, int grplo, int grphi, 105e66c33d5SSteven Rostedt (Red Hat) const char *gpevent), 10609c7b890SPaul E. McKenney 10709c7b890SPaul E. McKenney TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent), 10809c7b890SPaul E. McKenney 10909c7b890SPaul E. McKenney TP_STRUCT__entry( 110e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 11109c7b890SPaul E. McKenney __field(unsigned long, gpnum) 11209c7b890SPaul E. McKenney __field(unsigned long, completed) 11309c7b890SPaul E. McKenney __field(unsigned long, c) 11409c7b890SPaul E. McKenney __field(u8, level) 11509c7b890SPaul E. McKenney __field(int, grplo) 11609c7b890SPaul E. McKenney __field(int, grphi) 117e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 11809c7b890SPaul E. McKenney ), 11909c7b890SPaul E. McKenney 12009c7b890SPaul E. McKenney TP_fast_assign( 12109c7b890SPaul E. McKenney __entry->rcuname = rcuname; 12209c7b890SPaul E. McKenney __entry->gpnum = gpnum; 12309c7b890SPaul E. McKenney __entry->completed = completed; 12409c7b890SPaul E. McKenney __entry->c = c; 12509c7b890SPaul E. McKenney __entry->level = level; 12609c7b890SPaul E. McKenney __entry->grplo = grplo; 12709c7b890SPaul E. McKenney __entry->grphi = grphi; 12809c7b890SPaul E. McKenney __entry->gpevent = gpevent; 12909c7b890SPaul E. McKenney ), 13009c7b890SPaul E. McKenney 13109c7b890SPaul E. McKenney TP_printk("%s %lu %lu %lu %u %d %d %s", 13209c7b890SPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->completed, 13309c7b890SPaul E. McKenney __entry->c, __entry->level, __entry->grplo, __entry->grphi, 13409c7b890SPaul E. McKenney __entry->gpevent) 13509c7b890SPaul E. McKenney ); 13609c7b890SPaul E. McKenney 13709c7b890SPaul E. McKenney /* 138d4c08f2aSPaul E. McKenney * Tracepoint for grace-period-initialization events. These are 139d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the new grace-period number, the 140d4c08f2aSPaul E. McKenney * rcu_node structure level, the starting and ending CPU covered by the 141d4c08f2aSPaul E. McKenney * rcu_node structure, and the mask of CPUs that will be waited for. 142d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 143d4c08f2aSPaul E. McKenney */ 144d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period_init, 145d4c08f2aSPaul E. McKenney 146e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level, 147d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 148d4c08f2aSPaul E. McKenney 149d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), 150d4c08f2aSPaul E. McKenney 151d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 152e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 153d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 154d4c08f2aSPaul E. McKenney __field(u8, level) 155d4c08f2aSPaul E. McKenney __field(int, grplo) 156d4c08f2aSPaul E. McKenney __field(int, grphi) 157d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 158d4c08f2aSPaul E. McKenney ), 159d4c08f2aSPaul E. McKenney 160d4c08f2aSPaul E. McKenney TP_fast_assign( 161d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 162d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 163d4c08f2aSPaul E. McKenney __entry->level = level; 164d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 165d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 166d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 167d4c08f2aSPaul E. McKenney ), 168d4c08f2aSPaul E. McKenney 169d4c08f2aSPaul E. McKenney TP_printk("%s %lu %u %d %d %lx", 170d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->level, 171d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->qsmask) 172d4c08f2aSPaul E. McKenney ); 173d4c08f2aSPaul E. McKenney 174d4c08f2aSPaul E. McKenney /* 175e087816dSPaul E. McKenney * Tracepoint for expedited grace-period events. Takes a string identifying 176e087816dSPaul E. McKenney * the RCU flavor, the expedited grace-period sequence number, and a string 177e087816dSPaul E. McKenney * identifying the grace-period-related event as follows: 178e087816dSPaul E. McKenney * 179e087816dSPaul E. McKenney * "snap": Captured snapshot of expedited grace period sequence number. 180e087816dSPaul E. McKenney * "start": Started a real expedited grace period. 181e087816dSPaul E. McKenney * "end": Ended a real expedited grace period. 182e087816dSPaul E. McKenney * "done": Someone else did the expedited grace period for us. 183e087816dSPaul E. McKenney */ 184e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_grace_period, 185e087816dSPaul E. McKenney 186e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), 187e087816dSPaul E. McKenney 188e087816dSPaul E. McKenney TP_ARGS(rcuname, gpseq, gpevent), 189e087816dSPaul E. McKenney 190e087816dSPaul E. McKenney TP_STRUCT__entry( 191e087816dSPaul E. McKenney __field(const char *, rcuname) 192e087816dSPaul E. McKenney __field(unsigned long, gpseq) 193e087816dSPaul E. McKenney __field(const char *, gpevent) 194e087816dSPaul E. McKenney ), 195e087816dSPaul E. McKenney 196e087816dSPaul E. McKenney TP_fast_assign( 197e087816dSPaul E. McKenney __entry->rcuname = rcuname; 198e087816dSPaul E. McKenney __entry->gpseq = gpseq; 199e087816dSPaul E. McKenney __entry->gpevent = gpevent; 200e087816dSPaul E. McKenney ), 201e087816dSPaul E. McKenney 202e087816dSPaul E. McKenney TP_printk("%s %lu %s", 203e087816dSPaul E. McKenney __entry->rcuname, __entry->gpseq, __entry->gpevent) 204e087816dSPaul E. McKenney ); 205e087816dSPaul E. McKenney 206e087816dSPaul E. McKenney /* 207e087816dSPaul E. McKenney * Tracepoint for expedited grace-period funnel-locking events. Takes a 208e087816dSPaul E. McKenney * string identifying the RCU flavor, an integer identifying the rcu_node 209e087816dSPaul E. McKenney * combining-tree level, another pair of integers identifying the lowest- 210e087816dSPaul E. McKenney * and highest-numbered CPU associated with the current rcu_node structure, 211e087816dSPaul E. McKenney * and a string. identifying the grace-period-related event as follows: 212e087816dSPaul E. McKenney * 213e087816dSPaul E. McKenney * "acq": Acquired a level of funnel lock 214e087816dSPaul E. McKenney * "rel": Released a level of funnel lock 215e087816dSPaul E. McKenney */ 216e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_funnel_lock, 217e087816dSPaul E. McKenney 218e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, 219e087816dSPaul E. McKenney const char *gpevent), 220e087816dSPaul E. McKenney 221e087816dSPaul E. McKenney TP_ARGS(rcuname, level, grplo, grphi, gpevent), 222e087816dSPaul E. McKenney 223e087816dSPaul E. McKenney TP_STRUCT__entry( 224e087816dSPaul E. McKenney __field(const char *, rcuname) 225e087816dSPaul E. McKenney __field(u8, level) 226e087816dSPaul E. McKenney __field(int, grplo) 227e087816dSPaul E. McKenney __field(int, grphi) 228e087816dSPaul E. McKenney __field(const char *, gpevent) 229e087816dSPaul E. McKenney ), 230e087816dSPaul E. McKenney 231e087816dSPaul E. McKenney TP_fast_assign( 232e087816dSPaul E. McKenney __entry->rcuname = rcuname; 233e087816dSPaul E. McKenney __entry->level = level; 234e087816dSPaul E. McKenney __entry->grplo = grplo; 235e087816dSPaul E. McKenney __entry->grphi = grphi; 236e087816dSPaul E. McKenney __entry->gpevent = gpevent; 237e087816dSPaul E. McKenney ), 238e087816dSPaul E. McKenney 239e087816dSPaul E. McKenney TP_printk("%s %d %d %d %s", 240e087816dSPaul E. McKenney __entry->rcuname, __entry->level, __entry->grplo, 241e087816dSPaul E. McKenney __entry->grphi, __entry->gpevent) 242e087816dSPaul E. McKenney ); 243e087816dSPaul E. McKenney 244e087816dSPaul E. McKenney /* 2459261dd0dSPaul E. McKenney * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended 2469261dd0dSPaul E. McKenney * to assist debugging of these handoffs. 2479261dd0dSPaul E. McKenney * 2489261dd0dSPaul E. McKenney * The first argument is the name of the RCU flavor, and the second is 2499261dd0dSPaul E. McKenney * the number of the offloaded CPU are extracted. The third and final 2509261dd0dSPaul E. McKenney * argument is a string as follows: 2519261dd0dSPaul E. McKenney * 2529261dd0dSPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 2539fdd3bc9SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 2549261dd0dSPaul E. McKenney * "WakeOvf": Wake rcuo kthread, CB list is huge. 2559fdd3bc9SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 2569261dd0dSPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 2579261dd0dSPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 2589fdd3bc9SPaul E. McKenney * "DeferredWake": Carried out the "IsDeferred" wakeup. 25969a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 26069a79bb1SPaul E. McKenney * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. 2619261dd0dSPaul E. McKenney * "WokeEmpty": rcuo kthread woke to find empty list. 2629261dd0dSPaul E. McKenney * "WokeNonEmpty": rcuo kthread woke to find non-empty list. 26369a79bb1SPaul E. McKenney * "WaitQueue": Enqueue partially done, timed wait for it to complete. 26469a79bb1SPaul E. McKenney * "WokeQueue": Partial enqueue now complete. 2659261dd0dSPaul E. McKenney */ 2669261dd0dSPaul E. McKenney TRACE_EVENT(rcu_nocb_wake, 2679261dd0dSPaul E. McKenney 2689261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2699261dd0dSPaul E. McKenney 2709261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2719261dd0dSPaul E. McKenney 2729261dd0dSPaul E. McKenney TP_STRUCT__entry( 2739261dd0dSPaul E. McKenney __field(const char *, rcuname) 2749261dd0dSPaul E. McKenney __field(int, cpu) 2759261dd0dSPaul E. McKenney __field(const char *, reason) 2769261dd0dSPaul E. McKenney ), 2779261dd0dSPaul E. McKenney 2789261dd0dSPaul E. McKenney TP_fast_assign( 2799261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2809261dd0dSPaul E. McKenney __entry->cpu = cpu; 2819261dd0dSPaul E. McKenney __entry->reason = reason; 2829261dd0dSPaul E. McKenney ), 2839261dd0dSPaul E. McKenney 2849261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 2859261dd0dSPaul E. McKenney ); 2869261dd0dSPaul E. McKenney 2879261dd0dSPaul E. McKenney /* 288d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 289d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 290d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 291d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 292d4c08f2aSPaul E. McKenney */ 293d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 294d4c08f2aSPaul E. McKenney 295e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), 296d4c08f2aSPaul E. McKenney 297d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, pid, gpnum), 298d4c08f2aSPaul E. McKenney 299d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 300e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 301d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 302d4c08f2aSPaul E. McKenney __field(int, pid) 303d4c08f2aSPaul E. McKenney ), 304d4c08f2aSPaul E. McKenney 305d4c08f2aSPaul E. McKenney TP_fast_assign( 306d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 307d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 308d4c08f2aSPaul E. McKenney __entry->pid = pid; 309d4c08f2aSPaul E. McKenney ), 310d4c08f2aSPaul E. McKenney 311d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 312d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->pid) 313d4c08f2aSPaul E. McKenney ); 314d4c08f2aSPaul E. McKenney 315d4c08f2aSPaul E. McKenney /* 316d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 317d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 318d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 319d4c08f2aSPaul E. McKenney */ 320d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 321d4c08f2aSPaul E. McKenney 322e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), 323d4c08f2aSPaul E. McKenney 324d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, pid), 325d4c08f2aSPaul E. McKenney 326d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 327e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 328d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 329d4c08f2aSPaul E. McKenney __field(int, pid) 330d4c08f2aSPaul E. McKenney ), 331d4c08f2aSPaul E. McKenney 332d4c08f2aSPaul E. McKenney TP_fast_assign( 333d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 334d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 335d4c08f2aSPaul E. McKenney __entry->pid = pid; 336d4c08f2aSPaul E. McKenney ), 337d4c08f2aSPaul E. McKenney 338d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) 339d4c08f2aSPaul E. McKenney ); 340d4c08f2aSPaul E. McKenney 341d4c08f2aSPaul E. McKenney /* 342d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 343d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 344d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 345d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 346d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 347d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 348d4c08f2aSPaul E. McKenney */ 349d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 350d4c08f2aSPaul E. McKenney 351e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, 352d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 353d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 354d4c08f2aSPaul E. McKenney 355d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 356d4c08f2aSPaul E. McKenney 357d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 358e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 359d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 360d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 361d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 362d4c08f2aSPaul E. McKenney __field(u8, level) 363d4c08f2aSPaul E. McKenney __field(int, grplo) 364d4c08f2aSPaul E. McKenney __field(int, grphi) 365d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 366d4c08f2aSPaul E. McKenney ), 367d4c08f2aSPaul E. McKenney 368d4c08f2aSPaul E. McKenney TP_fast_assign( 369d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 370d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 371d4c08f2aSPaul E. McKenney __entry->mask = mask; 372d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 373d4c08f2aSPaul E. McKenney __entry->level = level; 374d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 375d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 376d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 377d4c08f2aSPaul E. McKenney ), 378d4c08f2aSPaul E. McKenney 379d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 380d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 381d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 382d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 383d4c08f2aSPaul E. McKenney ); 384d4c08f2aSPaul E. McKenney 385d4c08f2aSPaul E. McKenney /* 386d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 387d4c08f2aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number 388d4c08f2aSPaul E. McKenney * that was blocked by the CPU, the CPU itself, and the type of quiescent 389d4c08f2aSPaul E. McKenney * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, 390d4c08f2aSPaul E. McKenney * or "kick" when kicking a CPU that has been in dyntick-idle mode for 391d4c08f2aSPaul E. McKenney * too long. 392d4c08f2aSPaul E. McKenney */ 393d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 394d4c08f2aSPaul E. McKenney 395e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), 396d4c08f2aSPaul E. McKenney 397d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 398d4c08f2aSPaul E. McKenney 399d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 400e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 401d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 402d4c08f2aSPaul E. McKenney __field(int, cpu) 403e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 404d4c08f2aSPaul E. McKenney ), 405d4c08f2aSPaul E. McKenney 406d4c08f2aSPaul E. McKenney TP_fast_assign( 407d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 408d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 409d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 410d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 411d4c08f2aSPaul E. McKenney ), 412d4c08f2aSPaul E. McKenney 413d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 414d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 415d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 416d4c08f2aSPaul E. McKenney ); 417d4c08f2aSPaul E. McKenney 41828f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 419d4c08f2aSPaul E. McKenney 420d4c08f2aSPaul E. McKenney /* 421d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 422045fb931SPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "End" for 423045fb931SPaul E. McKenney * leaving it, "--=" for events moving towards idle, and "++=" for events 424045fb931SPaul E. McKenney * moving away from idle. "Error on entry: not idle task" and "Error on 425045fb931SPaul E. McKenney * exit: not idle task" indicate that a non-idle task is erroneously 426045fb931SPaul E. McKenney * toying with the idle loop. 427045fb931SPaul E. McKenney * 428045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 429045fb931SPaul E. McKenney * depth before and after the event of interest. Note that task-related 430045fb931SPaul E. McKenney * events use the upper bits of each number, while interrupt-related 431045fb931SPaul E. McKenney * events use the lower bits. 432d4c08f2aSPaul E. McKenney */ 433d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 434d4c08f2aSPaul E. McKenney 435e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), 436d4c08f2aSPaul E. McKenney 4374145fa7fSPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting), 438d4c08f2aSPaul E. McKenney 439d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 440e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 4414145fa7fSPaul E. McKenney __field(long long, oldnesting) 4424145fa7fSPaul E. McKenney __field(long long, newnesting) 443d4c08f2aSPaul E. McKenney ), 444d4c08f2aSPaul E. McKenney 445d4c08f2aSPaul E. McKenney TP_fast_assign( 446d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4474145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4484145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 449d4c08f2aSPaul E. McKenney ), 450d4c08f2aSPaul E. McKenney 4514145fa7fSPaul E. McKenney TP_printk("%s %llx %llx", __entry->polarity, 4524145fa7fSPaul E. McKenney __entry->oldnesting, __entry->newnesting) 453d4c08f2aSPaul E. McKenney ); 454d4c08f2aSPaul E. McKenney 455d4c08f2aSPaul E. McKenney /* 456433cdddcSPaul E. McKenney * Tracepoint for RCU preparation for idle, the goal being to get RCU 457433cdddcSPaul E. McKenney * processing done so that the current CPU can shut off its scheduling 458433cdddcSPaul E. McKenney * clock and enter dyntick-idle mode. One way to accomplish this is 459433cdddcSPaul E. McKenney * to drain all RCU callbacks from this CPU, and the other is to have 460433cdddcSPaul E. McKenney * done everything RCU requires for the current grace period. In this 461433cdddcSPaul E. McKenney * latter case, the CPU will be awakened at the end of the current grace 462433cdddcSPaul E. McKenney * period in order to process the remainder of its callbacks. 463433cdddcSPaul E. McKenney * 464433cdddcSPaul E. McKenney * These tracepoints take a string as argument: 465433cdddcSPaul E. McKenney * 466433cdddcSPaul E. McKenney * "No callbacks": Nothing to do, no callbacks on this CPU. 467433cdddcSPaul E. McKenney * "In holdoff": Nothing to do, holding off after unsuccessful attempt. 468433cdddcSPaul E. McKenney * "Begin holdoff": Attempt failed, don't retry until next jiffy. 4697cb92499SPaul E. McKenney * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. 470fd4b3526SPaul E. McKenney * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. 471433cdddcSPaul E. McKenney * "More callbacks": Still more callbacks, try again to clear them out. 472433cdddcSPaul E. McKenney * "Callbacks drained": All callbacks processed, off to dyntick idle! 4737cb92499SPaul E. McKenney * "Timer": Timer fired to cause CPU to continue processing callbacks. 47421e52e15SPaul E. McKenney * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. 4752fdbb31bSPaul E. McKenney * "Cleanup after idle": Idle exited, timer canceled. 476433cdddcSPaul E. McKenney */ 477433cdddcSPaul E. McKenney TRACE_EVENT(rcu_prep_idle, 478433cdddcSPaul E. McKenney 479e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *reason), 480433cdddcSPaul E. McKenney 481433cdddcSPaul E. McKenney TP_ARGS(reason), 482433cdddcSPaul E. McKenney 483433cdddcSPaul E. McKenney TP_STRUCT__entry( 484e66c33d5SSteven Rostedt (Red Hat) __field(const char *, reason) 485433cdddcSPaul E. McKenney ), 486433cdddcSPaul E. McKenney 487433cdddcSPaul E. McKenney TP_fast_assign( 488433cdddcSPaul E. McKenney __entry->reason = reason; 489433cdddcSPaul E. McKenney ), 490433cdddcSPaul E. McKenney 491433cdddcSPaul E. McKenney TP_printk("%s", __entry->reason) 492433cdddcSPaul E. McKenney ); 493433cdddcSPaul E. McKenney 494433cdddcSPaul E. McKenney /* 495d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 496d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 497486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 498486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 499486e2593SPaul E. McKenney * total number of callbacks queued. 500d4c08f2aSPaul E. McKenney */ 501d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 502d4c08f2aSPaul E. McKenney 503e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 504486e2593SPaul E. McKenney long qlen), 505d4c08f2aSPaul E. McKenney 506486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 507d4c08f2aSPaul E. McKenney 508d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 509e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 510d4c08f2aSPaul E. McKenney __field(void *, rhp) 511d4c08f2aSPaul E. McKenney __field(void *, func) 512486e2593SPaul E. McKenney __field(long, qlen_lazy) 513d4c08f2aSPaul E. McKenney __field(long, qlen) 514d4c08f2aSPaul E. McKenney ), 515d4c08f2aSPaul E. McKenney 516d4c08f2aSPaul E. McKenney TP_fast_assign( 517d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 518d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 519d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 520486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 521d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 522d4c08f2aSPaul E. McKenney ), 523d4c08f2aSPaul E. McKenney 524486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 525486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 526486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 527d4c08f2aSPaul E. McKenney ); 528d4c08f2aSPaul E. McKenney 529d4c08f2aSPaul E. McKenney /* 530d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 531d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 532d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 533d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 534486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 535486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 536d4c08f2aSPaul E. McKenney */ 537d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 538d4c08f2aSPaul E. McKenney 539e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 540486e2593SPaul E. McKenney long qlen_lazy, long qlen), 541d4c08f2aSPaul E. McKenney 542486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 543d4c08f2aSPaul E. McKenney 544d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 545e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 546d4c08f2aSPaul E. McKenney __field(void *, rhp) 547d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 548486e2593SPaul E. McKenney __field(long, qlen_lazy) 549d4c08f2aSPaul E. McKenney __field(long, qlen) 550d4c08f2aSPaul E. McKenney ), 551d4c08f2aSPaul E. McKenney 552d4c08f2aSPaul E. McKenney TP_fast_assign( 553d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 554d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 555d4c08f2aSPaul E. McKenney __entry->offset = offset; 556486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 557d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 558d4c08f2aSPaul E. McKenney ), 559d4c08f2aSPaul E. McKenney 560486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 561d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 562486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 563d4c08f2aSPaul E. McKenney ); 564d4c08f2aSPaul E. McKenney 565300df91cSPaul E. McKenney /* 566300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 56772fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 568486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 569486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 570486e2593SPaul E. McKenney * the current RCU-callback batch limit. 57129c00b4aSPaul E. McKenney */ 57229c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 57329c00b4aSPaul E. McKenney 574e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 57529c00b4aSPaul E. McKenney 576486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 57729c00b4aSPaul E. McKenney 57829c00b4aSPaul E. McKenney TP_STRUCT__entry( 579e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 580486e2593SPaul E. McKenney __field(long, qlen_lazy) 581300df91cSPaul E. McKenney __field(long, qlen) 5823aac7a8dSPaul E. McKenney __field(long, blimit) 58329c00b4aSPaul E. McKenney ), 58429c00b4aSPaul E. McKenney 58529c00b4aSPaul E. McKenney TP_fast_assign( 58672fe701bSPaul E. McKenney __entry->rcuname = rcuname; 587486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 588300df91cSPaul E. McKenney __entry->qlen = qlen; 58929c00b4aSPaul E. McKenney __entry->blimit = blimit; 59029c00b4aSPaul E. McKenney ), 59129c00b4aSPaul E. McKenney 5923aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 593486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 594486e2593SPaul E. McKenney __entry->blimit) 59529c00b4aSPaul E. McKenney ); 59629c00b4aSPaul E. McKenney 59729c00b4aSPaul E. McKenney /* 598300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 599d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 600d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 60129c00b4aSPaul E. McKenney */ 60229c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 60329c00b4aSPaul E. McKenney 604e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 60529c00b4aSPaul E. McKenney 606d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 60729c00b4aSPaul E. McKenney 60829c00b4aSPaul E. McKenney TP_STRUCT__entry( 609e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 61029c00b4aSPaul E. McKenney __field(void *, rhp) 61129c00b4aSPaul E. McKenney __field(void *, func) 61229c00b4aSPaul E. McKenney ), 61329c00b4aSPaul E. McKenney 61429c00b4aSPaul E. McKenney TP_fast_assign( 615d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 61629c00b4aSPaul E. McKenney __entry->rhp = rhp; 61729c00b4aSPaul E. McKenney __entry->func = rhp->func; 61829c00b4aSPaul E. McKenney ), 61929c00b4aSPaul E. McKenney 620d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 621d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 62229c00b4aSPaul E. McKenney ); 62329c00b4aSPaul E. McKenney 62429c00b4aSPaul E. McKenney /* 625300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 626d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 627d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 628d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 629d4c08f2aSPaul E. McKenney * data structure. 63029c00b4aSPaul E. McKenney */ 63129c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 63229c00b4aSPaul E. McKenney 633e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 63429c00b4aSPaul E. McKenney 635d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 63629c00b4aSPaul E. McKenney 63729c00b4aSPaul E. McKenney TP_STRUCT__entry( 638e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 63929c00b4aSPaul E. McKenney __field(void *, rhp) 64029c00b4aSPaul E. McKenney __field(unsigned long, offset) 64129c00b4aSPaul E. McKenney ), 64229c00b4aSPaul E. McKenney 64329c00b4aSPaul E. McKenney TP_fast_assign( 644d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 64529c00b4aSPaul E. McKenney __entry->rhp = rhp; 64629c00b4aSPaul E. McKenney __entry->offset = offset; 64729c00b4aSPaul E. McKenney ), 64829c00b4aSPaul E. McKenney 649d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 650d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 65129c00b4aSPaul E. McKenney ); 65229c00b4aSPaul E. McKenney 65329c00b4aSPaul E. McKenney /* 654300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6554968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6564968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6574968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6584968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6594968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6604968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6614968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6624968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 66329c00b4aSPaul E. McKenney */ 66429c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 66529c00b4aSPaul E. McKenney 666e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 66715f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 66829c00b4aSPaul E. McKenney 6694968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 67029c00b4aSPaul E. McKenney 67129c00b4aSPaul E. McKenney TP_STRUCT__entry( 672e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 67329c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 67415f5191bSPaul E. McKenney __field(char, cb) 67515f5191bSPaul E. McKenney __field(char, nr) 67615f5191bSPaul E. McKenney __field(char, iit) 67715f5191bSPaul E. McKenney __field(char, risk) 67829c00b4aSPaul E. McKenney ), 67929c00b4aSPaul E. McKenney 68029c00b4aSPaul E. McKenney TP_fast_assign( 68172fe701bSPaul E. McKenney __entry->rcuname = rcuname; 68229c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6834968c300SPaul E. McKenney __entry->cb = cb; 6844968c300SPaul E. McKenney __entry->nr = nr; 6854968c300SPaul E. McKenney __entry->iit = iit; 6864968c300SPaul E. McKenney __entry->risk = risk; 68729c00b4aSPaul E. McKenney ), 68829c00b4aSPaul E. McKenney 6894968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6904968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6914968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6924968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6934968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6944968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 69529c00b4aSPaul E. McKenney ); 69629c00b4aSPaul E. McKenney 69791afaf30SPaul E. McKenney /* 69891afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 69991afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 70091afaf30SPaul E. McKenney * is the callback address. 70191afaf30SPaul E. McKenney */ 70291afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 70391afaf30SPaul E. McKenney 704e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 70552494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 70691afaf30SPaul E. McKenney 70752494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 70891afaf30SPaul E. McKenney 70991afaf30SPaul E. McKenney TP_STRUCT__entry( 710e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcutorturename) 71191afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 71252494535SPaul E. McKenney __field(unsigned long, secs) 71352494535SPaul E. McKenney __field(unsigned long, c_old) 71452494535SPaul E. McKenney __field(unsigned long, c) 71591afaf30SPaul E. McKenney ), 71691afaf30SPaul E. McKenney 71791afaf30SPaul E. McKenney TP_fast_assign( 71891afaf30SPaul E. McKenney __entry->rcutorturename = rcutorturename; 71991afaf30SPaul E. McKenney __entry->rhp = rhp; 72052494535SPaul E. McKenney __entry->secs = secs; 72152494535SPaul E. McKenney __entry->c_old = c_old; 72252494535SPaul E. McKenney __entry->c = c; 72391afaf30SPaul E. McKenney ), 72491afaf30SPaul E. McKenney 72552494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 72652494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 72752494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 72891afaf30SPaul E. McKenney ); 72991afaf30SPaul E. McKenney 730a83eff0aSPaul E. McKenney /* 731a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 732a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 733d7e29933SPaul E. McKenney * "Begin": _rcu_barrier() started. 734d7e29933SPaul E. McKenney * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. 735d7e29933SPaul E. McKenney * "Inc1": _rcu_barrier() piggyback check counter incremented. 736d7e29933SPaul E. McKenney * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU 737d7e29933SPaul E. McKenney * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. 738d7e29933SPaul E. McKenney * "OnlineQ": _rcu_barrier() found online CPU with callbacks. 739d7e29933SPaul E. McKenney * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. 740a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 741a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 742a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 743d7e29933SPaul E. McKenney * "Inc2": _rcu_barrier() piggyback check counter incremented. 744a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 745a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 746a83eff0aSPaul E. McKenney */ 747a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 748a83eff0aSPaul E. McKenney 749e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 750a83eff0aSPaul E. McKenney 751a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 752a83eff0aSPaul E. McKenney 753a83eff0aSPaul E. McKenney TP_STRUCT__entry( 754e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 755e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 756a83eff0aSPaul E. McKenney __field(int, cpu) 757a83eff0aSPaul E. McKenney __field(int, cnt) 758a83eff0aSPaul E. McKenney __field(unsigned long, done) 759a83eff0aSPaul E. McKenney ), 760a83eff0aSPaul E. McKenney 761a83eff0aSPaul E. McKenney TP_fast_assign( 762a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 763a83eff0aSPaul E. McKenney __entry->s = s; 764a83eff0aSPaul E. McKenney __entry->cpu = cpu; 765a83eff0aSPaul E. McKenney __entry->cnt = cnt; 766a83eff0aSPaul E. McKenney __entry->done = done; 767a83eff0aSPaul E. McKenney ), 768a83eff0aSPaul E. McKenney 769a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 770a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 771a83eff0aSPaul E. McKenney __entry->done) 772a83eff0aSPaul E. McKenney ); 773a83eff0aSPaul E. McKenney 774d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 775d4c08f2aSPaul E. McKenney 776d4c08f2aSPaul E. McKenney #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) 777bd9f0686SPaul E. McKenney #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ 77809c7b890SPaul E. McKenney level, grplo, grphi, event) \ 77909c7b890SPaul E. McKenney do { } while (0) 780e087816dSPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ 781e087816dSPaul E. McKenney qsmask) do { } while (0) 782e087816dSPaul E. McKenney #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ 783e087816dSPaul E. McKenney do { } while (0) 784e087816dSPaul E. McKenney #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ 785e087816dSPaul E. McKenney do { } while (0) 7869261dd0dSPaul E. McKenney #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) 787d4c08f2aSPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) 788d4c08f2aSPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) 789486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 790486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 791486e2593SPaul E. McKenney while (0) 792d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 7934145fa7fSPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) 794433cdddcSPaul E. McKenney #define trace_rcu_prep_idle(reason) do { } while (0) 795486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 796486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 797486e2593SPaul E. McKenney do { } while (0) 798486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 799486e2593SPaul E. McKenney do { } while (0) 800d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 801d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 8024968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 8034968c300SPaul E. McKenney do { } while (0) 80452494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 80552494535SPaul E. McKenney do { } while (0) 806a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 807d4c08f2aSPaul E. McKenney 808d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 809d4c08f2aSPaul E. McKenney 81029c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 81129c00b4aSPaul E. McKenney 81229c00b4aSPaul E. McKenney /* This part must be outside protection */ 81329c00b4aSPaul E. McKenney #include <trace/define_trace.h> 814