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. 182f6a12f34SPaul E. McKenney * "endwake": Woke piggybackers up. 183e087816dSPaul E. McKenney * "done": Someone else did the expedited grace period for us. 184e087816dSPaul E. McKenney */ 185e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_grace_period, 186e087816dSPaul E. McKenney 187e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), 188e087816dSPaul E. McKenney 189e087816dSPaul E. McKenney TP_ARGS(rcuname, gpseq, gpevent), 190e087816dSPaul E. McKenney 191e087816dSPaul E. McKenney TP_STRUCT__entry( 192e087816dSPaul E. McKenney __field(const char *, rcuname) 193e087816dSPaul E. McKenney __field(unsigned long, gpseq) 194e087816dSPaul E. McKenney __field(const char *, gpevent) 195e087816dSPaul E. McKenney ), 196e087816dSPaul E. McKenney 197e087816dSPaul E. McKenney TP_fast_assign( 198e087816dSPaul E. McKenney __entry->rcuname = rcuname; 199e087816dSPaul E. McKenney __entry->gpseq = gpseq; 200e087816dSPaul E. McKenney __entry->gpevent = gpevent; 201e087816dSPaul E. McKenney ), 202e087816dSPaul E. McKenney 203e087816dSPaul E. McKenney TP_printk("%s %lu %s", 204e087816dSPaul E. McKenney __entry->rcuname, __entry->gpseq, __entry->gpevent) 205e087816dSPaul E. McKenney ); 206e087816dSPaul E. McKenney 207e087816dSPaul E. McKenney /* 208e087816dSPaul E. McKenney * Tracepoint for expedited grace-period funnel-locking events. Takes a 209e087816dSPaul E. McKenney * string identifying the RCU flavor, an integer identifying the rcu_node 210e087816dSPaul E. McKenney * combining-tree level, another pair of integers identifying the lowest- 211e087816dSPaul E. McKenney * and highest-numbered CPU associated with the current rcu_node structure, 212e087816dSPaul E. McKenney * and a string. identifying the grace-period-related event as follows: 213e087816dSPaul E. McKenney * 214f6a12f34SPaul E. McKenney * "nxtlvl": Advance to next level of rcu_node funnel 215f6a12f34SPaul E. McKenney * "wait": Wait for someone else to do expedited GP 216e087816dSPaul E. McKenney */ 217e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_funnel_lock, 218e087816dSPaul E. McKenney 219e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, 220e087816dSPaul E. McKenney const char *gpevent), 221e087816dSPaul E. McKenney 222e087816dSPaul E. McKenney TP_ARGS(rcuname, level, grplo, grphi, gpevent), 223e087816dSPaul E. McKenney 224e087816dSPaul E. McKenney TP_STRUCT__entry( 225e087816dSPaul E. McKenney __field(const char *, rcuname) 226e087816dSPaul E. McKenney __field(u8, level) 227e087816dSPaul E. McKenney __field(int, grplo) 228e087816dSPaul E. McKenney __field(int, grphi) 229e087816dSPaul E. McKenney __field(const char *, gpevent) 230e087816dSPaul E. McKenney ), 231e087816dSPaul E. McKenney 232e087816dSPaul E. McKenney TP_fast_assign( 233e087816dSPaul E. McKenney __entry->rcuname = rcuname; 234e087816dSPaul E. McKenney __entry->level = level; 235e087816dSPaul E. McKenney __entry->grplo = grplo; 236e087816dSPaul E. McKenney __entry->grphi = grphi; 237e087816dSPaul E. McKenney __entry->gpevent = gpevent; 238e087816dSPaul E. McKenney ), 239e087816dSPaul E. McKenney 240e087816dSPaul E. McKenney TP_printk("%s %d %d %d %s", 241e087816dSPaul E. McKenney __entry->rcuname, __entry->level, __entry->grplo, 242e087816dSPaul E. McKenney __entry->grphi, __entry->gpevent) 243e087816dSPaul E. McKenney ); 244e087816dSPaul E. McKenney 245e087816dSPaul E. McKenney /* 2469261dd0dSPaul E. McKenney * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended 2479261dd0dSPaul E. McKenney * to assist debugging of these handoffs. 2489261dd0dSPaul E. McKenney * 2499261dd0dSPaul E. McKenney * The first argument is the name of the RCU flavor, and the second is 2509261dd0dSPaul E. McKenney * the number of the offloaded CPU are extracted. The third and final 2519261dd0dSPaul E. McKenney * argument is a string as follows: 2529261dd0dSPaul E. McKenney * 2539261dd0dSPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 2549fdd3bc9SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 2559261dd0dSPaul E. McKenney * "WakeOvf": Wake rcuo kthread, CB list is huge. 2569fdd3bc9SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 2579261dd0dSPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 2589261dd0dSPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 2599fdd3bc9SPaul E. McKenney * "DeferredWake": Carried out the "IsDeferred" wakeup. 26069a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 26169a79bb1SPaul E. McKenney * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. 2629261dd0dSPaul E. McKenney * "WokeEmpty": rcuo kthread woke to find empty list. 2639261dd0dSPaul E. McKenney * "WokeNonEmpty": rcuo kthread woke to find non-empty list. 26469a79bb1SPaul E. McKenney * "WaitQueue": Enqueue partially done, timed wait for it to complete. 26569a79bb1SPaul E. McKenney * "WokeQueue": Partial enqueue now complete. 2669261dd0dSPaul E. McKenney */ 2679261dd0dSPaul E. McKenney TRACE_EVENT(rcu_nocb_wake, 2689261dd0dSPaul E. McKenney 2699261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2709261dd0dSPaul E. McKenney 2719261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2729261dd0dSPaul E. McKenney 2739261dd0dSPaul E. McKenney TP_STRUCT__entry( 2749261dd0dSPaul E. McKenney __field(const char *, rcuname) 2759261dd0dSPaul E. McKenney __field(int, cpu) 2769261dd0dSPaul E. McKenney __field(const char *, reason) 2779261dd0dSPaul E. McKenney ), 2789261dd0dSPaul E. McKenney 2799261dd0dSPaul E. McKenney TP_fast_assign( 2809261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2819261dd0dSPaul E. McKenney __entry->cpu = cpu; 2829261dd0dSPaul E. McKenney __entry->reason = reason; 2839261dd0dSPaul E. McKenney ), 2849261dd0dSPaul E. McKenney 2859261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 2869261dd0dSPaul E. McKenney ); 2879261dd0dSPaul E. McKenney 2889261dd0dSPaul E. McKenney /* 289d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 290d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 291d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 292d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 293d4c08f2aSPaul E. McKenney */ 294d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 295d4c08f2aSPaul E. McKenney 296e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), 297d4c08f2aSPaul E. McKenney 298d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, pid, gpnum), 299d4c08f2aSPaul E. McKenney 300d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 301e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 302d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 303d4c08f2aSPaul E. McKenney __field(int, pid) 304d4c08f2aSPaul E. McKenney ), 305d4c08f2aSPaul E. McKenney 306d4c08f2aSPaul E. McKenney TP_fast_assign( 307d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 308d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 309d4c08f2aSPaul E. McKenney __entry->pid = pid; 310d4c08f2aSPaul E. McKenney ), 311d4c08f2aSPaul E. McKenney 312d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 313d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->pid) 314d4c08f2aSPaul E. McKenney ); 315d4c08f2aSPaul E. McKenney 316d4c08f2aSPaul E. McKenney /* 317d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 318d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 319d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 320d4c08f2aSPaul E. McKenney */ 321d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 322d4c08f2aSPaul E. McKenney 323e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), 324d4c08f2aSPaul E. McKenney 325d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, pid), 326d4c08f2aSPaul E. McKenney 327d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 328e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 329d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 330d4c08f2aSPaul E. McKenney __field(int, pid) 331d4c08f2aSPaul E. McKenney ), 332d4c08f2aSPaul E. McKenney 333d4c08f2aSPaul E. McKenney TP_fast_assign( 334d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 335d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 336d4c08f2aSPaul E. McKenney __entry->pid = pid; 337d4c08f2aSPaul E. McKenney ), 338d4c08f2aSPaul E. McKenney 339d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) 340d4c08f2aSPaul E. McKenney ); 341d4c08f2aSPaul E. McKenney 342d4c08f2aSPaul E. McKenney /* 343d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 344d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 345d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 346d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 347d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 348d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 349d4c08f2aSPaul E. McKenney */ 350d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 351d4c08f2aSPaul E. McKenney 352e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, 353d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 354d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 355d4c08f2aSPaul E. McKenney 356d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 357d4c08f2aSPaul E. McKenney 358d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 359e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 360d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 361d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 362d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 363d4c08f2aSPaul E. McKenney __field(u8, level) 364d4c08f2aSPaul E. McKenney __field(int, grplo) 365d4c08f2aSPaul E. McKenney __field(int, grphi) 366d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 367d4c08f2aSPaul E. McKenney ), 368d4c08f2aSPaul E. McKenney 369d4c08f2aSPaul E. McKenney TP_fast_assign( 370d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 371d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 372d4c08f2aSPaul E. McKenney __entry->mask = mask; 373d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 374d4c08f2aSPaul E. McKenney __entry->level = level; 375d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 376d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 377d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 378d4c08f2aSPaul E. McKenney ), 379d4c08f2aSPaul E. McKenney 380d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 381d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 382d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 383d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 384d4c08f2aSPaul E. McKenney ); 385d4c08f2aSPaul E. McKenney 386d4c08f2aSPaul E. McKenney /* 387d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 3883a19b46aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number that 3893a19b46aSPaul E. McKenney * was blocked by the CPU, the CPU itself, and the type of quiescent state, 3903a19b46aSPaul E. McKenney * which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, "kick" 3913a19b46aSPaul E. McKenney * when kicking a CPU that has been in dyntick-idle mode for too long, or 3923a19b46aSPaul E. McKenney * "rqc" if the CPU got a quiescent state via its rcu_qs_ctr. 393d4c08f2aSPaul E. McKenney */ 394d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 395d4c08f2aSPaul E. McKenney 396e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), 397d4c08f2aSPaul E. McKenney 398d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 399d4c08f2aSPaul E. McKenney 400d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 401e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 402d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 403d4c08f2aSPaul E. McKenney __field(int, cpu) 404e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 405d4c08f2aSPaul E. McKenney ), 406d4c08f2aSPaul E. McKenney 407d4c08f2aSPaul E. McKenney TP_fast_assign( 408d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 409d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 410d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 411d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 412d4c08f2aSPaul E. McKenney ), 413d4c08f2aSPaul E. McKenney 414d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 415d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 416d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 417d4c08f2aSPaul E. McKenney ); 418d4c08f2aSPaul E. McKenney 41928f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 420d4c08f2aSPaul E. McKenney 421d4c08f2aSPaul E. McKenney /* 422d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 423045fb931SPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "End" for 424045fb931SPaul E. McKenney * leaving it, "--=" for events moving towards idle, and "++=" for events 425045fb931SPaul E. McKenney * moving away from idle. "Error on entry: not idle task" and "Error on 426045fb931SPaul E. McKenney * exit: not idle task" indicate that a non-idle task is erroneously 427045fb931SPaul E. McKenney * toying with the idle loop. 428045fb931SPaul E. McKenney * 429045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 430045fb931SPaul E. McKenney * depth before and after the event of interest. Note that task-related 431045fb931SPaul E. McKenney * events use the upper bits of each number, while interrupt-related 432045fb931SPaul E. McKenney * events use the lower bits. 433d4c08f2aSPaul E. McKenney */ 434d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 435d4c08f2aSPaul E. McKenney 436e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *polarity, long long oldnesting, long long newnesting), 437d4c08f2aSPaul E. McKenney 4384145fa7fSPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting), 439d4c08f2aSPaul E. McKenney 440d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 441e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 4424145fa7fSPaul E. McKenney __field(long long, oldnesting) 4434145fa7fSPaul E. McKenney __field(long long, newnesting) 444d4c08f2aSPaul E. McKenney ), 445d4c08f2aSPaul E. McKenney 446d4c08f2aSPaul E. McKenney TP_fast_assign( 447d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4484145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4494145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 450d4c08f2aSPaul E. McKenney ), 451d4c08f2aSPaul E. McKenney 4524145fa7fSPaul E. McKenney TP_printk("%s %llx %llx", __entry->polarity, 4534145fa7fSPaul E. McKenney __entry->oldnesting, __entry->newnesting) 454d4c08f2aSPaul E. McKenney ); 455d4c08f2aSPaul E. McKenney 456d4c08f2aSPaul E. McKenney /* 457433cdddcSPaul E. McKenney * Tracepoint for RCU preparation for idle, the goal being to get RCU 458433cdddcSPaul E. McKenney * processing done so that the current CPU can shut off its scheduling 459433cdddcSPaul E. McKenney * clock and enter dyntick-idle mode. One way to accomplish this is 460433cdddcSPaul E. McKenney * to drain all RCU callbacks from this CPU, and the other is to have 461433cdddcSPaul E. McKenney * done everything RCU requires for the current grace period. In this 462433cdddcSPaul E. McKenney * latter case, the CPU will be awakened at the end of the current grace 463433cdddcSPaul E. McKenney * period in order to process the remainder of its callbacks. 464433cdddcSPaul E. McKenney * 465433cdddcSPaul E. McKenney * These tracepoints take a string as argument: 466433cdddcSPaul E. McKenney * 467433cdddcSPaul E. McKenney * "No callbacks": Nothing to do, no callbacks on this CPU. 468433cdddcSPaul E. McKenney * "In holdoff": Nothing to do, holding off after unsuccessful attempt. 469433cdddcSPaul E. McKenney * "Begin holdoff": Attempt failed, don't retry until next jiffy. 4707cb92499SPaul E. McKenney * "Dyntick with callbacks": Entering dyntick-idle despite callbacks. 471fd4b3526SPaul E. McKenney * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks. 472433cdddcSPaul E. McKenney * "More callbacks": Still more callbacks, try again to clear them out. 473433cdddcSPaul E. McKenney * "Callbacks drained": All callbacks processed, off to dyntick idle! 4747cb92499SPaul E. McKenney * "Timer": Timer fired to cause CPU to continue processing callbacks. 47521e52e15SPaul E. McKenney * "Demigrate": Timer fired on wrong CPU, woke up correct CPU. 4762fdbb31bSPaul E. McKenney * "Cleanup after idle": Idle exited, timer canceled. 477433cdddcSPaul E. McKenney */ 478433cdddcSPaul E. McKenney TRACE_EVENT(rcu_prep_idle, 479433cdddcSPaul E. McKenney 480e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *reason), 481433cdddcSPaul E. McKenney 482433cdddcSPaul E. McKenney TP_ARGS(reason), 483433cdddcSPaul E. McKenney 484433cdddcSPaul E. McKenney TP_STRUCT__entry( 485e66c33d5SSteven Rostedt (Red Hat) __field(const char *, reason) 486433cdddcSPaul E. McKenney ), 487433cdddcSPaul E. McKenney 488433cdddcSPaul E. McKenney TP_fast_assign( 489433cdddcSPaul E. McKenney __entry->reason = reason; 490433cdddcSPaul E. McKenney ), 491433cdddcSPaul E. McKenney 492433cdddcSPaul E. McKenney TP_printk("%s", __entry->reason) 493433cdddcSPaul E. McKenney ); 494433cdddcSPaul E. McKenney 495433cdddcSPaul E. McKenney /* 496d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 497d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 498486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 499486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 500486e2593SPaul E. McKenney * total number of callbacks queued. 501d4c08f2aSPaul E. McKenney */ 502d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 503d4c08f2aSPaul E. McKenney 504e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 505486e2593SPaul E. McKenney long qlen), 506d4c08f2aSPaul E. McKenney 507486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 508d4c08f2aSPaul E. McKenney 509d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 510e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 511d4c08f2aSPaul E. McKenney __field(void *, rhp) 512d4c08f2aSPaul E. McKenney __field(void *, func) 513486e2593SPaul E. McKenney __field(long, qlen_lazy) 514d4c08f2aSPaul E. McKenney __field(long, qlen) 515d4c08f2aSPaul E. McKenney ), 516d4c08f2aSPaul E. McKenney 517d4c08f2aSPaul E. McKenney TP_fast_assign( 518d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 519d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 520d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 521486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 522d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 523d4c08f2aSPaul E. McKenney ), 524d4c08f2aSPaul E. McKenney 525486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 526486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 527486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 528d4c08f2aSPaul E. McKenney ); 529d4c08f2aSPaul E. McKenney 530d4c08f2aSPaul E. McKenney /* 531d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 532d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 533d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 534d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 535486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 536486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 537d4c08f2aSPaul E. McKenney */ 538d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 539d4c08f2aSPaul E. McKenney 540e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 541486e2593SPaul E. McKenney long qlen_lazy, long qlen), 542d4c08f2aSPaul E. McKenney 543486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 544d4c08f2aSPaul E. McKenney 545d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 546e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 547d4c08f2aSPaul E. McKenney __field(void *, rhp) 548d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 549486e2593SPaul E. McKenney __field(long, qlen_lazy) 550d4c08f2aSPaul E. McKenney __field(long, qlen) 551d4c08f2aSPaul E. McKenney ), 552d4c08f2aSPaul E. McKenney 553d4c08f2aSPaul E. McKenney TP_fast_assign( 554d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 555d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 556d4c08f2aSPaul E. McKenney __entry->offset = offset; 557486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 558d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 559d4c08f2aSPaul E. McKenney ), 560d4c08f2aSPaul E. McKenney 561486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 562d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 563486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 564d4c08f2aSPaul E. McKenney ); 565d4c08f2aSPaul E. McKenney 566300df91cSPaul E. McKenney /* 567300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 56872fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 569486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 570486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 571486e2593SPaul E. McKenney * the current RCU-callback batch limit. 57229c00b4aSPaul E. McKenney */ 57329c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 57429c00b4aSPaul E. McKenney 575e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 57629c00b4aSPaul E. McKenney 577486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 57829c00b4aSPaul E. McKenney 57929c00b4aSPaul E. McKenney TP_STRUCT__entry( 580e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 581486e2593SPaul E. McKenney __field(long, qlen_lazy) 582300df91cSPaul E. McKenney __field(long, qlen) 5833aac7a8dSPaul E. McKenney __field(long, blimit) 58429c00b4aSPaul E. McKenney ), 58529c00b4aSPaul E. McKenney 58629c00b4aSPaul E. McKenney TP_fast_assign( 58772fe701bSPaul E. McKenney __entry->rcuname = rcuname; 588486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 589300df91cSPaul E. McKenney __entry->qlen = qlen; 59029c00b4aSPaul E. McKenney __entry->blimit = blimit; 59129c00b4aSPaul E. McKenney ), 59229c00b4aSPaul E. McKenney 5933aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 594486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 595486e2593SPaul E. McKenney __entry->blimit) 59629c00b4aSPaul E. McKenney ); 59729c00b4aSPaul E. McKenney 59829c00b4aSPaul E. McKenney /* 599300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 600d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 601d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 60229c00b4aSPaul E. McKenney */ 60329c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 60429c00b4aSPaul E. McKenney 605e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 60629c00b4aSPaul E. McKenney 607d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 60829c00b4aSPaul E. McKenney 60929c00b4aSPaul E. McKenney TP_STRUCT__entry( 610e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 61129c00b4aSPaul E. McKenney __field(void *, rhp) 61229c00b4aSPaul E. McKenney __field(void *, func) 61329c00b4aSPaul E. McKenney ), 61429c00b4aSPaul E. McKenney 61529c00b4aSPaul E. McKenney TP_fast_assign( 616d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 61729c00b4aSPaul E. McKenney __entry->rhp = rhp; 61829c00b4aSPaul E. McKenney __entry->func = rhp->func; 61929c00b4aSPaul E. McKenney ), 62029c00b4aSPaul E. McKenney 621d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 622d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 62329c00b4aSPaul E. McKenney ); 62429c00b4aSPaul E. McKenney 62529c00b4aSPaul E. McKenney /* 626300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 627d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 628d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 629d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 630d4c08f2aSPaul E. McKenney * data structure. 63129c00b4aSPaul E. McKenney */ 63229c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 63329c00b4aSPaul E. McKenney 634e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 63529c00b4aSPaul E. McKenney 636d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 63729c00b4aSPaul E. McKenney 63829c00b4aSPaul E. McKenney TP_STRUCT__entry( 639e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 64029c00b4aSPaul E. McKenney __field(void *, rhp) 64129c00b4aSPaul E. McKenney __field(unsigned long, offset) 64229c00b4aSPaul E. McKenney ), 64329c00b4aSPaul E. McKenney 64429c00b4aSPaul E. McKenney TP_fast_assign( 645d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 64629c00b4aSPaul E. McKenney __entry->rhp = rhp; 64729c00b4aSPaul E. McKenney __entry->offset = offset; 64829c00b4aSPaul E. McKenney ), 64929c00b4aSPaul E. McKenney 650d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 651d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 65229c00b4aSPaul E. McKenney ); 65329c00b4aSPaul E. McKenney 65429c00b4aSPaul E. McKenney /* 655300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6564968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6574968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6584968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6594968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6604968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6614968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6624968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6634968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 66429c00b4aSPaul E. McKenney */ 66529c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 66629c00b4aSPaul E. McKenney 667e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 66815f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 66929c00b4aSPaul E. McKenney 6704968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 67129c00b4aSPaul E. McKenney 67229c00b4aSPaul E. McKenney TP_STRUCT__entry( 673e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 67429c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 67515f5191bSPaul E. McKenney __field(char, cb) 67615f5191bSPaul E. McKenney __field(char, nr) 67715f5191bSPaul E. McKenney __field(char, iit) 67815f5191bSPaul E. McKenney __field(char, risk) 67929c00b4aSPaul E. McKenney ), 68029c00b4aSPaul E. McKenney 68129c00b4aSPaul E. McKenney TP_fast_assign( 68272fe701bSPaul E. McKenney __entry->rcuname = rcuname; 68329c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6844968c300SPaul E. McKenney __entry->cb = cb; 6854968c300SPaul E. McKenney __entry->nr = nr; 6864968c300SPaul E. McKenney __entry->iit = iit; 6874968c300SPaul E. McKenney __entry->risk = risk; 68829c00b4aSPaul E. McKenney ), 68929c00b4aSPaul E. McKenney 6904968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6914968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6924968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6934968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6944968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6954968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 69629c00b4aSPaul E. McKenney ); 69729c00b4aSPaul E. McKenney 69891afaf30SPaul E. McKenney /* 69991afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 70091afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 701d0af39e8SPaul E. McKenney * is the callback address. The third argument is the start time in 702d0af39e8SPaul E. McKenney * seconds, and the last two arguments are the grace period numbers 703d0af39e8SPaul E. McKenney * at the beginning and end of the read, respectively. Note that the 704d0af39e8SPaul E. McKenney * callback address can be NULL. 70591afaf30SPaul E. McKenney */ 70691afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 70791afaf30SPaul E. McKenney 708e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 70952494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 71091afaf30SPaul E. McKenney 71152494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 71291afaf30SPaul E. McKenney 71391afaf30SPaul E. McKenney TP_STRUCT__entry( 714e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcutorturename) 71591afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 71652494535SPaul E. McKenney __field(unsigned long, secs) 71752494535SPaul E. McKenney __field(unsigned long, c_old) 71852494535SPaul E. McKenney __field(unsigned long, c) 71991afaf30SPaul E. McKenney ), 72091afaf30SPaul E. McKenney 72191afaf30SPaul E. McKenney TP_fast_assign( 72291afaf30SPaul E. McKenney __entry->rcutorturename = rcutorturename; 72391afaf30SPaul E. McKenney __entry->rhp = rhp; 72452494535SPaul E. McKenney __entry->secs = secs; 72552494535SPaul E. McKenney __entry->c_old = c_old; 72652494535SPaul E. McKenney __entry->c = c; 72791afaf30SPaul E. McKenney ), 72891afaf30SPaul E. McKenney 72952494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 73052494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 73152494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 73291afaf30SPaul E. McKenney ); 73391afaf30SPaul E. McKenney 734a83eff0aSPaul E. McKenney /* 735a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 736a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 737d7e29933SPaul E. McKenney * "Begin": _rcu_barrier() started. 738d7e29933SPaul E. McKenney * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. 739d7e29933SPaul E. McKenney * "Inc1": _rcu_barrier() piggyback check counter incremented. 740d7e29933SPaul E. McKenney * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU 741d7e29933SPaul E. McKenney * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. 742d7e29933SPaul E. McKenney * "OnlineQ": _rcu_barrier() found online CPU with callbacks. 743d7e29933SPaul E. McKenney * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. 744a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 745f92c734fSPaul E. McKenney * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. 746a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 747a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 748d7e29933SPaul E. McKenney * "Inc2": _rcu_barrier() piggyback check counter incremented. 749a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 750a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 751a83eff0aSPaul E. McKenney */ 752a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 753a83eff0aSPaul E. McKenney 754e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 755a83eff0aSPaul E. McKenney 756a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 757a83eff0aSPaul E. McKenney 758a83eff0aSPaul E. McKenney TP_STRUCT__entry( 759e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 760e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 761a83eff0aSPaul E. McKenney __field(int, cpu) 762a83eff0aSPaul E. McKenney __field(int, cnt) 763a83eff0aSPaul E. McKenney __field(unsigned long, done) 764a83eff0aSPaul E. McKenney ), 765a83eff0aSPaul E. McKenney 766a83eff0aSPaul E. McKenney TP_fast_assign( 767a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 768a83eff0aSPaul E. McKenney __entry->s = s; 769a83eff0aSPaul E. McKenney __entry->cpu = cpu; 770a83eff0aSPaul E. McKenney __entry->cnt = cnt; 771a83eff0aSPaul E. McKenney __entry->done = done; 772a83eff0aSPaul E. McKenney ), 773a83eff0aSPaul E. McKenney 774a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 775a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 776a83eff0aSPaul E. McKenney __entry->done) 777a83eff0aSPaul E. McKenney ); 778a83eff0aSPaul E. McKenney 779d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 780d4c08f2aSPaul E. McKenney 781d4c08f2aSPaul E. McKenney #define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0) 782bd9f0686SPaul E. McKenney #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ 78309c7b890SPaul E. McKenney level, grplo, grphi, event) \ 78409c7b890SPaul E. McKenney do { } while (0) 785e087816dSPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ 786e087816dSPaul E. McKenney qsmask) do { } while (0) 787e087816dSPaul E. McKenney #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ 788e087816dSPaul E. McKenney do { } while (0) 789e087816dSPaul E. McKenney #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ 790e087816dSPaul E. McKenney do { } while (0) 7919261dd0dSPaul E. McKenney #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) 792d4c08f2aSPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) 793d4c08f2aSPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) 794486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 795486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 796486e2593SPaul E. McKenney while (0) 797d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 7984145fa7fSPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0) 799433cdddcSPaul E. McKenney #define trace_rcu_prep_idle(reason) do { } while (0) 800486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 801486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 802486e2593SPaul E. McKenney do { } while (0) 803486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 804486e2593SPaul E. McKenney do { } while (0) 805d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 806d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 8074968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 8084968c300SPaul E. McKenney do { } while (0) 80952494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 81052494535SPaul E. McKenney do { } while (0) 811a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 812d4c08f2aSPaul E. McKenney 813d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 814d4c08f2aSPaul E. McKenney 81529c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 81629c00b4aSPaul E. McKenney 81729c00b4aSPaul E. McKenney /* This part must be outside protection */ 81829c00b4aSPaul E. McKenney #include <trace/define_trace.h> 819