1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 229c00b4aSPaul E. McKenney #undef TRACE_SYSTEM 329c00b4aSPaul E. McKenney #define TRACE_SYSTEM rcu 429c00b4aSPaul E. McKenney 529c00b4aSPaul E. McKenney #if !defined(_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ) 629c00b4aSPaul E. McKenney #define _TRACE_RCU_H 729c00b4aSPaul E. McKenney 829c00b4aSPaul E. McKenney #include <linux/tracepoint.h> 929c00b4aSPaul E. McKenney 1029c00b4aSPaul E. McKenney /* 11300df91cSPaul E. McKenney * Tracepoint for start/end markers used for utilization calculations. 12300df91cSPaul E. McKenney * By convention, the string is of the following forms: 13300df91cSPaul E. McKenney * 14300df91cSPaul E. McKenney * "Start <activity>" -- Mark the start of the specified activity, 15300df91cSPaul E. McKenney * such as "context switch". Nesting is permitted. 16300df91cSPaul E. McKenney * "End <activity>" -- Mark the end of the specified activity. 17385680a9SPaul E. McKenney * 18385680a9SPaul E. McKenney * An "@" character within "<activity>" is a comment character: Data 19385680a9SPaul E. McKenney * reduction scripts will ignore the "@" and the remainder of the line. 20300df91cSPaul E. McKenney */ 21300df91cSPaul E. McKenney TRACE_EVENT(rcu_utilization, 22300df91cSPaul E. McKenney 23e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *s), 24300df91cSPaul E. McKenney 25300df91cSPaul E. McKenney TP_ARGS(s), 26300df91cSPaul E. McKenney 27300df91cSPaul E. McKenney TP_STRUCT__entry( 28e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 29300df91cSPaul E. McKenney ), 30300df91cSPaul E. McKenney 31300df91cSPaul E. McKenney TP_fast_assign( 32300df91cSPaul E. McKenney __entry->s = s; 33300df91cSPaul E. McKenney ), 34300df91cSPaul E. McKenney 35300df91cSPaul E. McKenney TP_printk("%s", __entry->s) 36300df91cSPaul E. McKenney ); 37300df91cSPaul E. McKenney 38d4c08f2aSPaul E. McKenney #ifdef CONFIG_RCU_TRACE 39d4c08f2aSPaul E. McKenney 4028f6569aSPranith Kumar #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) 41d4c08f2aSPaul E. McKenney 42d4c08f2aSPaul E. McKenney /* 4363c4db78SPaul E. McKenney * Tracepoint for grace-period events. Takes a string identifying the 4463c4db78SPaul E. McKenney * RCU flavor, the grace-period number, and a string identifying the 4563c4db78SPaul E. McKenney * grace-period-related event as follows: 4663c4db78SPaul E. McKenney * 4763c4db78SPaul E. McKenney * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. 4863c4db78SPaul E. McKenney * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. 49bb311eccSPaul E. McKenney * "newreq": Request a new grace period. 5063c4db78SPaul E. McKenney * "start": Start a grace period. 5163c4db78SPaul E. McKenney * "cpustart": CPU first notices a grace-period start. 5263c4db78SPaul E. McKenney * "cpuqs": CPU passes through a quiescent state. 5363c4db78SPaul E. McKenney * "cpuonl": CPU comes online. 5463c4db78SPaul E. McKenney * "cpuofl": CPU goes offline. 55477351f7SPaul E. McKenney * "cpuofl-bgp": CPU goes offline while blocking a grace period. 5663c4db78SPaul E. McKenney * "reqwait": GP kthread sleeps waiting for grace-period request. 5763c4db78SPaul E. McKenney * "reqwaitsig": GP kthread awakened by signal from reqwait state. 5863c4db78SPaul E. McKenney * "fqswait": GP kthread waiting until time to force quiescent states. 5963c4db78SPaul E. McKenney * "fqsstart": GP kthread starts forcing quiescent states. 6063c4db78SPaul E. McKenney * "fqsend": GP kthread done forcing quiescent states. 6163c4db78SPaul E. McKenney * "fqswaitsig": GP kthread awakened by signal from fqswait state. 6263c4db78SPaul E. McKenney * "end": End a grace period. 6363c4db78SPaul E. McKenney * "cpuend": CPU first notices a grace-period end. 64d4c08f2aSPaul E. McKenney */ 65d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period, 66d4c08f2aSPaul E. McKenney 67477351f7SPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent), 68d4c08f2aSPaul E. McKenney 69477351f7SPaul E. McKenney TP_ARGS(rcuname, gp_seq, gpevent), 70d4c08f2aSPaul E. McKenney 71d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 72e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 73477351f7SPaul E. McKenney __field(unsigned long, gp_seq) 74e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 75d4c08f2aSPaul E. McKenney ), 76d4c08f2aSPaul E. McKenney 77d4c08f2aSPaul E. McKenney TP_fast_assign( 78d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 79477351f7SPaul E. McKenney __entry->gp_seq = gp_seq; 80d4c08f2aSPaul E. McKenney __entry->gpevent = gpevent; 81d4c08f2aSPaul E. McKenney ), 82d4c08f2aSPaul E. McKenney 83d4c08f2aSPaul E. McKenney TP_printk("%s %lu %s", 84477351f7SPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->gpevent) 85d4c08f2aSPaul E. McKenney ); 86d4c08f2aSPaul E. McKenney 87d4c08f2aSPaul E. McKenney /* 88c21b8b3eSPaul E. McKenney * Tracepoint for future grace-period events. The caller should pull 89c21b8b3eSPaul E. McKenney * the data from the rcu_node structure, other than rcuname, which comes 90c21b8b3eSPaul E. McKenney * from the rcu_state structure, and event, which is one of the following: 9109c7b890SPaul E. McKenney * 92c21b8b3eSPaul E. McKenney * "Startleaf": Request a grace period based on leaf-node data. 93c21b8b3eSPaul E. McKenney * "Prestarted": Someone beat us to the request 9409c7b890SPaul E. McKenney * "Startedleaf": Leaf-node start proved sufficient. 9509c7b890SPaul E. McKenney * "Startedleafroot": Leaf-node start proved sufficient after checking root. 9609c7b890SPaul E. McKenney * "Startedroot": Requested a nocb grace period based on root-node data. 97c21b8b3eSPaul E. McKenney * "NoGPkthread": The RCU grace-period kthread has not yet started. 9809c7b890SPaul E. McKenney * "StartWait": Start waiting for the requested grace period. 9909c7b890SPaul E. McKenney * "ResumeWait": Resume waiting after signal. 10009c7b890SPaul E. McKenney * "EndWait": Complete wait. 10109c7b890SPaul E. McKenney * "Cleanup": Clean up rcu_node structure after previous GP. 102c21b8b3eSPaul E. McKenney * "CleanupMore": Clean up, and another GP is needed. 10309c7b890SPaul E. McKenney */ 104bd9f0686SPaul E. McKenney TRACE_EVENT(rcu_future_grace_period, 10509c7b890SPaul E. McKenney 106e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, unsigned long completed, 10709c7b890SPaul E. McKenney unsigned long c, u8 level, int grplo, int grphi, 108e66c33d5SSteven Rostedt (Red Hat) const char *gpevent), 10909c7b890SPaul E. McKenney 11009c7b890SPaul E. McKenney TP_ARGS(rcuname, gpnum, completed, c, level, grplo, grphi, gpevent), 11109c7b890SPaul E. McKenney 11209c7b890SPaul E. McKenney TP_STRUCT__entry( 113e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 11409c7b890SPaul E. McKenney __field(unsigned long, gpnum) 11509c7b890SPaul E. McKenney __field(unsigned long, completed) 11609c7b890SPaul E. McKenney __field(unsigned long, c) 11709c7b890SPaul E. McKenney __field(u8, level) 11809c7b890SPaul E. McKenney __field(int, grplo) 11909c7b890SPaul E. McKenney __field(int, grphi) 120e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 12109c7b890SPaul E. McKenney ), 12209c7b890SPaul E. McKenney 12309c7b890SPaul E. McKenney TP_fast_assign( 12409c7b890SPaul E. McKenney __entry->rcuname = rcuname; 12509c7b890SPaul E. McKenney __entry->gpnum = gpnum; 12609c7b890SPaul E. McKenney __entry->completed = completed; 12709c7b890SPaul E. McKenney __entry->c = c; 12809c7b890SPaul E. McKenney __entry->level = level; 12909c7b890SPaul E. McKenney __entry->grplo = grplo; 13009c7b890SPaul E. McKenney __entry->grphi = grphi; 13109c7b890SPaul E. McKenney __entry->gpevent = gpevent; 13209c7b890SPaul E. McKenney ), 13309c7b890SPaul E. McKenney 13409c7b890SPaul E. McKenney TP_printk("%s %lu %lu %lu %u %d %d %s", 13509c7b890SPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->completed, 13609c7b890SPaul E. McKenney __entry->c, __entry->level, __entry->grplo, __entry->grphi, 13709c7b890SPaul E. McKenney __entry->gpevent) 13809c7b890SPaul E. McKenney ); 13909c7b890SPaul E. McKenney 14009c7b890SPaul E. McKenney /* 141d4c08f2aSPaul E. McKenney * Tracepoint for grace-period-initialization events. These are 142d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the new grace-period number, the 143d4c08f2aSPaul E. McKenney * rcu_node structure level, the starting and ending CPU covered by the 144d4c08f2aSPaul E. McKenney * rcu_node structure, and the mask of CPUs that will be waited for. 145d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 146d4c08f2aSPaul E. McKenney */ 147d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period_init, 148d4c08f2aSPaul E. McKenney 149e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level, 150d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 151d4c08f2aSPaul E. McKenney 152d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask), 153d4c08f2aSPaul E. McKenney 154d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 155e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 156d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 157d4c08f2aSPaul E. McKenney __field(u8, level) 158d4c08f2aSPaul E. McKenney __field(int, grplo) 159d4c08f2aSPaul E. McKenney __field(int, grphi) 160d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 161d4c08f2aSPaul E. McKenney ), 162d4c08f2aSPaul E. McKenney 163d4c08f2aSPaul E. McKenney TP_fast_assign( 164d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 165d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 166d4c08f2aSPaul E. McKenney __entry->level = level; 167d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 168d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 169d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 170d4c08f2aSPaul E. McKenney ), 171d4c08f2aSPaul E. McKenney 172d4c08f2aSPaul E. McKenney TP_printk("%s %lu %u %d %d %lx", 173d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->level, 174d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->qsmask) 175d4c08f2aSPaul E. McKenney ); 176d4c08f2aSPaul E. McKenney 177d4c08f2aSPaul E. McKenney /* 178e087816dSPaul E. McKenney * Tracepoint for expedited grace-period events. Takes a string identifying 179e087816dSPaul E. McKenney * the RCU flavor, the expedited grace-period sequence number, and a string 180e087816dSPaul E. McKenney * identifying the grace-period-related event as follows: 181e087816dSPaul E. McKenney * 182e087816dSPaul E. McKenney * "snap": Captured snapshot of expedited grace period sequence number. 183e087816dSPaul E. McKenney * "start": Started a real expedited grace period. 1849a414201SPaul E. McKenney * "reset": Started resetting the tree 1859a414201SPaul E. McKenney * "select": Started selecting the CPUs to wait on. 1867f5d42d0SPaul E. McKenney * "selectofl": Selected CPU partially offline. 1879a414201SPaul E. McKenney * "startwait": Started waiting on selected CPUs. 188e087816dSPaul E. McKenney * "end": Ended a real expedited grace period. 189f6a12f34SPaul E. McKenney * "endwake": Woke piggybackers up. 190e087816dSPaul E. McKenney * "done": Someone else did the expedited grace period for us. 191e087816dSPaul E. McKenney */ 192e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_grace_period, 193e087816dSPaul E. McKenney 194e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), 195e087816dSPaul E. McKenney 196e087816dSPaul E. McKenney TP_ARGS(rcuname, gpseq, gpevent), 197e087816dSPaul E. McKenney 198e087816dSPaul E. McKenney TP_STRUCT__entry( 199e087816dSPaul E. McKenney __field(const char *, rcuname) 200e087816dSPaul E. McKenney __field(unsigned long, gpseq) 201e087816dSPaul E. McKenney __field(const char *, gpevent) 202e087816dSPaul E. McKenney ), 203e087816dSPaul E. McKenney 204e087816dSPaul E. McKenney TP_fast_assign( 205e087816dSPaul E. McKenney __entry->rcuname = rcuname; 206e087816dSPaul E. McKenney __entry->gpseq = gpseq; 207e087816dSPaul E. McKenney __entry->gpevent = gpevent; 208e087816dSPaul E. McKenney ), 209e087816dSPaul E. McKenney 210e087816dSPaul E. McKenney TP_printk("%s %lu %s", 211e087816dSPaul E. McKenney __entry->rcuname, __entry->gpseq, __entry->gpevent) 212e087816dSPaul E. McKenney ); 213e087816dSPaul E. McKenney 214e087816dSPaul E. McKenney /* 215e087816dSPaul E. McKenney * Tracepoint for expedited grace-period funnel-locking events. Takes a 216e087816dSPaul E. McKenney * string identifying the RCU flavor, an integer identifying the rcu_node 217e087816dSPaul E. McKenney * combining-tree level, another pair of integers identifying the lowest- 218e087816dSPaul E. McKenney * and highest-numbered CPU associated with the current rcu_node structure, 219e087816dSPaul E. McKenney * and a string. identifying the grace-period-related event as follows: 220e087816dSPaul E. McKenney * 221f6a12f34SPaul E. McKenney * "nxtlvl": Advance to next level of rcu_node funnel 222f6a12f34SPaul E. McKenney * "wait": Wait for someone else to do expedited GP 223e087816dSPaul E. McKenney */ 224e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_funnel_lock, 225e087816dSPaul E. McKenney 226e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, 227e087816dSPaul E. McKenney const char *gpevent), 228e087816dSPaul E. McKenney 229e087816dSPaul E. McKenney TP_ARGS(rcuname, level, grplo, grphi, gpevent), 230e087816dSPaul E. McKenney 231e087816dSPaul E. McKenney TP_STRUCT__entry( 232e087816dSPaul E. McKenney __field(const char *, rcuname) 233e087816dSPaul E. McKenney __field(u8, level) 234e087816dSPaul E. McKenney __field(int, grplo) 235e087816dSPaul E. McKenney __field(int, grphi) 236e087816dSPaul E. McKenney __field(const char *, gpevent) 237e087816dSPaul E. McKenney ), 238e087816dSPaul E. McKenney 239e087816dSPaul E. McKenney TP_fast_assign( 240e087816dSPaul E. McKenney __entry->rcuname = rcuname; 241e087816dSPaul E. McKenney __entry->level = level; 242e087816dSPaul E. McKenney __entry->grplo = grplo; 243e087816dSPaul E. McKenney __entry->grphi = grphi; 244e087816dSPaul E. McKenney __entry->gpevent = gpevent; 245e087816dSPaul E. McKenney ), 246e087816dSPaul E. McKenney 247e087816dSPaul E. McKenney TP_printk("%s %d %d %d %s", 248e087816dSPaul E. McKenney __entry->rcuname, __entry->level, __entry->grplo, 249e087816dSPaul E. McKenney __entry->grphi, __entry->gpevent) 250e087816dSPaul E. McKenney ); 251e087816dSPaul E. McKenney 2529122caf9SSteven Rostedt (VMware) #ifdef CONFIG_RCU_NOCB_CPU 253e087816dSPaul E. McKenney /* 2549261dd0dSPaul E. McKenney * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended 2559261dd0dSPaul E. McKenney * to assist debugging of these handoffs. 2569261dd0dSPaul E. McKenney * 2579261dd0dSPaul E. McKenney * The first argument is the name of the RCU flavor, and the second is 2589261dd0dSPaul E. McKenney * the number of the offloaded CPU are extracted. The third and final 2599261dd0dSPaul E. McKenney * argument is a string as follows: 2609261dd0dSPaul E. McKenney * 2619261dd0dSPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 2629fdd3bc9SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 2639261dd0dSPaul E. McKenney * "WakeOvf": Wake rcuo kthread, CB list is huge. 2649fdd3bc9SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 2659261dd0dSPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 2669261dd0dSPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 2679fdd3bc9SPaul E. McKenney * "DeferredWake": Carried out the "IsDeferred" wakeup. 26869a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 26969a79bb1SPaul E. McKenney * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. 2709261dd0dSPaul E. McKenney * "WokeEmpty": rcuo kthread woke to find empty list. 2719261dd0dSPaul E. McKenney * "WokeNonEmpty": rcuo kthread woke to find non-empty list. 27269a79bb1SPaul E. McKenney * "WaitQueue": Enqueue partially done, timed wait for it to complete. 27369a79bb1SPaul E. McKenney * "WokeQueue": Partial enqueue now complete. 2749261dd0dSPaul E. McKenney */ 2759261dd0dSPaul E. McKenney TRACE_EVENT(rcu_nocb_wake, 2769261dd0dSPaul E. McKenney 2779261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2789261dd0dSPaul E. McKenney 2799261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2809261dd0dSPaul E. McKenney 2819261dd0dSPaul E. McKenney TP_STRUCT__entry( 2829261dd0dSPaul E. McKenney __field(const char *, rcuname) 2839261dd0dSPaul E. McKenney __field(int, cpu) 2849261dd0dSPaul E. McKenney __field(const char *, reason) 2859261dd0dSPaul E. McKenney ), 2869261dd0dSPaul E. McKenney 2879261dd0dSPaul E. McKenney TP_fast_assign( 2889261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2899261dd0dSPaul E. McKenney __entry->cpu = cpu; 2909261dd0dSPaul E. McKenney __entry->reason = reason; 2919261dd0dSPaul E. McKenney ), 2929261dd0dSPaul E. McKenney 2939261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 2949261dd0dSPaul E. McKenney ); 2959122caf9SSteven Rostedt (VMware) #endif 2969261dd0dSPaul E. McKenney 2979261dd0dSPaul E. McKenney /* 298d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 299d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 300d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 301d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 302d4c08f2aSPaul E. McKenney */ 303d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 304d4c08f2aSPaul E. McKenney 305e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int pid, unsigned long gpnum), 306d4c08f2aSPaul E. McKenney 307d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, pid, gpnum), 308d4c08f2aSPaul E. McKenney 309d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 310e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 311d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 312d4c08f2aSPaul E. McKenney __field(int, pid) 313d4c08f2aSPaul E. McKenney ), 314d4c08f2aSPaul E. McKenney 315d4c08f2aSPaul E. McKenney TP_fast_assign( 316d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 317d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 318d4c08f2aSPaul E. McKenney __entry->pid = pid; 319d4c08f2aSPaul E. McKenney ), 320d4c08f2aSPaul E. McKenney 321d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 322d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, __entry->pid) 323d4c08f2aSPaul E. McKenney ); 324d4c08f2aSPaul E. McKenney 325d4c08f2aSPaul E. McKenney /* 326d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 327d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 328d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 329d4c08f2aSPaul E. McKenney */ 330d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 331d4c08f2aSPaul E. McKenney 332e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int pid), 333d4c08f2aSPaul E. McKenney 334d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, pid), 335d4c08f2aSPaul E. McKenney 336d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 337e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 338d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 339d4c08f2aSPaul E. McKenney __field(int, pid) 340d4c08f2aSPaul E. McKenney ), 341d4c08f2aSPaul E. McKenney 342d4c08f2aSPaul E. McKenney TP_fast_assign( 343d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 344d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 345d4c08f2aSPaul E. McKenney __entry->pid = pid; 346d4c08f2aSPaul E. McKenney ), 347d4c08f2aSPaul E. McKenney 348d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gpnum, __entry->pid) 349d4c08f2aSPaul E. McKenney ); 350d4c08f2aSPaul E. McKenney 351d4c08f2aSPaul E. McKenney /* 352d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 353d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 354d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 355d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 356d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 357d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 358d4c08f2aSPaul E. McKenney */ 359d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 360d4c08f2aSPaul E. McKenney 361e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, 362d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 363d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 364d4c08f2aSPaul E. McKenney 365d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 366d4c08f2aSPaul E. McKenney 367d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 368e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 369d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 370d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 371d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 372d4c08f2aSPaul E. McKenney __field(u8, level) 373d4c08f2aSPaul E. McKenney __field(int, grplo) 374d4c08f2aSPaul E. McKenney __field(int, grphi) 375d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 376d4c08f2aSPaul E. McKenney ), 377d4c08f2aSPaul E. McKenney 378d4c08f2aSPaul E. McKenney TP_fast_assign( 379d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 380d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 381d4c08f2aSPaul E. McKenney __entry->mask = mask; 382d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 383d4c08f2aSPaul E. McKenney __entry->level = level; 384d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 385d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 386d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 387d4c08f2aSPaul E. McKenney ), 388d4c08f2aSPaul E. McKenney 389d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 390d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 391d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 392d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 393d4c08f2aSPaul E. McKenney ); 394d4c08f2aSPaul E. McKenney 395d4c08f2aSPaul E. McKenney /* 396d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 3973a19b46aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number that 3983a19b46aSPaul E. McKenney * was blocked by the CPU, the CPU itself, and the type of quiescent state, 3993a19b46aSPaul E. McKenney * which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, "kick" 4003a19b46aSPaul E. McKenney * when kicking a CPU that has been in dyntick-idle mode for too long, or 4013a19b46aSPaul E. McKenney * "rqc" if the CPU got a quiescent state via its rcu_qs_ctr. 402d4c08f2aSPaul E. McKenney */ 403d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 404d4c08f2aSPaul E. McKenney 405e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), 406d4c08f2aSPaul E. McKenney 407d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 408d4c08f2aSPaul E. McKenney 409d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 410e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 411d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 412d4c08f2aSPaul E. McKenney __field(int, cpu) 413e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 414d4c08f2aSPaul E. McKenney ), 415d4c08f2aSPaul E. McKenney 416d4c08f2aSPaul E. McKenney TP_fast_assign( 417d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 418d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 419d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 420d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 421d4c08f2aSPaul E. McKenney ), 422d4c08f2aSPaul E. McKenney 423d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 424d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 425d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 426d4c08f2aSPaul E. McKenney ); 427d4c08f2aSPaul E. McKenney 42828f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 429d4c08f2aSPaul E. McKenney 430d4c08f2aSPaul E. McKenney /* 431d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 432bd2b879aSPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "Startirq" for 433bd2b879aSPaul E. McKenney * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it 434bd2b879aSPaul E. McKenney * to irq/NMI, "--=" for events moving towards idle, and "++=" for events 435e68bbb26SPaul E. McKenney * moving away from idle. 436045fb931SPaul E. McKenney * 437045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 438e68bbb26SPaul E. McKenney * depth before and after the event of interest, and a third number that is 439e68bbb26SPaul E. McKenney * the ->dynticks counter. Note that task-related and interrupt-related 440e68bbb26SPaul E. McKenney * events use two separate counters, and that the "++=" and "--=" events 441e68bbb26SPaul E. McKenney * for irq/NMI will change the counter by two, otherwise by one. 442d4c08f2aSPaul E. McKenney */ 443d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 444d4c08f2aSPaul E. McKenney 445dec98900SPaul E. McKenney TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks), 446d4c08f2aSPaul E. McKenney 447dec98900SPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting, dynticks), 448d4c08f2aSPaul E. McKenney 449d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 450e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 45184585aa8SPaul E. McKenney __field(long, oldnesting) 45284585aa8SPaul E. McKenney __field(long, newnesting) 453dec98900SPaul E. McKenney __field(int, dynticks) 454d4c08f2aSPaul E. McKenney ), 455d4c08f2aSPaul E. McKenney 456d4c08f2aSPaul E. McKenney TP_fast_assign( 457d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4584145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4594145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 460dec98900SPaul E. McKenney __entry->dynticks = atomic_read(&dynticks); 461d4c08f2aSPaul E. McKenney ), 462d4c08f2aSPaul E. McKenney 463dec98900SPaul E. McKenney TP_printk("%s %lx %lx %#3x", __entry->polarity, 464dec98900SPaul E. McKenney __entry->oldnesting, __entry->newnesting, 465dec98900SPaul E. McKenney __entry->dynticks & 0xfff) 466433cdddcSPaul E. McKenney ); 467433cdddcSPaul E. McKenney 468433cdddcSPaul E. McKenney /* 469d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 470d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 471486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 472486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 473486e2593SPaul E. McKenney * total number of callbacks queued. 474d4c08f2aSPaul E. McKenney */ 475d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 476d4c08f2aSPaul E. McKenney 477e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 478486e2593SPaul E. McKenney long qlen), 479d4c08f2aSPaul E. McKenney 480486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 481d4c08f2aSPaul E. McKenney 482d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 483e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 484d4c08f2aSPaul E. McKenney __field(void *, rhp) 485d4c08f2aSPaul E. McKenney __field(void *, func) 486486e2593SPaul E. McKenney __field(long, qlen_lazy) 487d4c08f2aSPaul E. McKenney __field(long, qlen) 488d4c08f2aSPaul E. McKenney ), 489d4c08f2aSPaul E. McKenney 490d4c08f2aSPaul E. McKenney TP_fast_assign( 491d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 492d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 493d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 494486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 495d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 496d4c08f2aSPaul E. McKenney ), 497d4c08f2aSPaul E. McKenney 498486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 499486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 500486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 501d4c08f2aSPaul E. McKenney ); 502d4c08f2aSPaul E. McKenney 503d4c08f2aSPaul E. McKenney /* 504d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 505d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 506d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 507d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 508486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 509486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 510d4c08f2aSPaul E. McKenney */ 511d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 512d4c08f2aSPaul E. McKenney 513e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 514486e2593SPaul E. McKenney long qlen_lazy, long qlen), 515d4c08f2aSPaul E. McKenney 516486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 517d4c08f2aSPaul E. McKenney 518d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 519e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 520d4c08f2aSPaul E. McKenney __field(void *, rhp) 521d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 522486e2593SPaul E. McKenney __field(long, qlen_lazy) 523d4c08f2aSPaul E. McKenney __field(long, qlen) 524d4c08f2aSPaul E. McKenney ), 525d4c08f2aSPaul E. McKenney 526d4c08f2aSPaul E. McKenney TP_fast_assign( 527d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 528d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 529d4c08f2aSPaul E. McKenney __entry->offset = offset; 530486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 531d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 532d4c08f2aSPaul E. McKenney ), 533d4c08f2aSPaul E. McKenney 534486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 535d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 536486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 537d4c08f2aSPaul E. McKenney ); 538d4c08f2aSPaul E. McKenney 539300df91cSPaul E. McKenney /* 540300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 54172fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 542486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 543486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 544486e2593SPaul E. McKenney * the current RCU-callback batch limit. 54529c00b4aSPaul E. McKenney */ 54629c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 54729c00b4aSPaul E. McKenney 548e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 54929c00b4aSPaul E. McKenney 550486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 55129c00b4aSPaul E. McKenney 55229c00b4aSPaul E. McKenney TP_STRUCT__entry( 553e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 554486e2593SPaul E. McKenney __field(long, qlen_lazy) 555300df91cSPaul E. McKenney __field(long, qlen) 5563aac7a8dSPaul E. McKenney __field(long, blimit) 55729c00b4aSPaul E. McKenney ), 55829c00b4aSPaul E. McKenney 55929c00b4aSPaul E. McKenney TP_fast_assign( 56072fe701bSPaul E. McKenney __entry->rcuname = rcuname; 561486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 562300df91cSPaul E. McKenney __entry->qlen = qlen; 56329c00b4aSPaul E. McKenney __entry->blimit = blimit; 56429c00b4aSPaul E. McKenney ), 56529c00b4aSPaul E. McKenney 5663aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 567486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 568486e2593SPaul E. McKenney __entry->blimit) 56929c00b4aSPaul E. McKenney ); 57029c00b4aSPaul E. McKenney 57129c00b4aSPaul E. McKenney /* 572300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 573d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 574d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 57529c00b4aSPaul E. McKenney */ 57629c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 57729c00b4aSPaul E. McKenney 578e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 57929c00b4aSPaul E. McKenney 580d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 58129c00b4aSPaul E. McKenney 58229c00b4aSPaul E. McKenney TP_STRUCT__entry( 583e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 58429c00b4aSPaul E. McKenney __field(void *, rhp) 58529c00b4aSPaul E. McKenney __field(void *, func) 58629c00b4aSPaul E. McKenney ), 58729c00b4aSPaul E. McKenney 58829c00b4aSPaul E. McKenney TP_fast_assign( 589d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 59029c00b4aSPaul E. McKenney __entry->rhp = rhp; 59129c00b4aSPaul E. McKenney __entry->func = rhp->func; 59229c00b4aSPaul E. McKenney ), 59329c00b4aSPaul E. McKenney 594d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 595d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 59629c00b4aSPaul E. McKenney ); 59729c00b4aSPaul E. McKenney 59829c00b4aSPaul E. McKenney /* 599300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 600d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 601d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 602d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 603d4c08f2aSPaul E. McKenney * data structure. 60429c00b4aSPaul E. McKenney */ 60529c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 60629c00b4aSPaul E. McKenney 607e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 60829c00b4aSPaul E. McKenney 609d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 61029c00b4aSPaul E. McKenney 61129c00b4aSPaul E. McKenney TP_STRUCT__entry( 612e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 61329c00b4aSPaul E. McKenney __field(void *, rhp) 61429c00b4aSPaul E. McKenney __field(unsigned long, offset) 61529c00b4aSPaul E. McKenney ), 61629c00b4aSPaul E. McKenney 61729c00b4aSPaul E. McKenney TP_fast_assign( 618d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 61929c00b4aSPaul E. McKenney __entry->rhp = rhp; 62029c00b4aSPaul E. McKenney __entry->offset = offset; 62129c00b4aSPaul E. McKenney ), 62229c00b4aSPaul E. McKenney 623d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 624d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 62529c00b4aSPaul E. McKenney ); 62629c00b4aSPaul E. McKenney 62729c00b4aSPaul E. McKenney /* 628300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6294968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6304968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6314968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6324968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6334968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6344968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6354968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6364968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 63729c00b4aSPaul E. McKenney */ 63829c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 63929c00b4aSPaul E. McKenney 640e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 64115f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 64229c00b4aSPaul E. McKenney 6434968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 64429c00b4aSPaul E. McKenney 64529c00b4aSPaul E. McKenney TP_STRUCT__entry( 646e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 64729c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 64815f5191bSPaul E. McKenney __field(char, cb) 64915f5191bSPaul E. McKenney __field(char, nr) 65015f5191bSPaul E. McKenney __field(char, iit) 65115f5191bSPaul E. McKenney __field(char, risk) 65229c00b4aSPaul E. McKenney ), 65329c00b4aSPaul E. McKenney 65429c00b4aSPaul E. McKenney TP_fast_assign( 65572fe701bSPaul E. McKenney __entry->rcuname = rcuname; 65629c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6574968c300SPaul E. McKenney __entry->cb = cb; 6584968c300SPaul E. McKenney __entry->nr = nr; 6594968c300SPaul E. McKenney __entry->iit = iit; 6604968c300SPaul E. McKenney __entry->risk = risk; 66129c00b4aSPaul E. McKenney ), 66229c00b4aSPaul E. McKenney 6634968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6644968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6654968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6664968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6674968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6684968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 66929c00b4aSPaul E. McKenney ); 67029c00b4aSPaul E. McKenney 67191afaf30SPaul E. McKenney /* 67291afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 67391afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 674d0af39e8SPaul E. McKenney * is the callback address. The third argument is the start time in 675d0af39e8SPaul E. McKenney * seconds, and the last two arguments are the grace period numbers 676d0af39e8SPaul E. McKenney * at the beginning and end of the read, respectively. Note that the 677d0af39e8SPaul E. McKenney * callback address can be NULL. 67891afaf30SPaul E. McKenney */ 679b3c98314SPaul E. McKenney #define RCUTORTURENAME_LEN 8 68091afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 68191afaf30SPaul E. McKenney 682e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 68352494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 68491afaf30SPaul E. McKenney 68552494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 68691afaf30SPaul E. McKenney 68791afaf30SPaul E. McKenney TP_STRUCT__entry( 688b3c98314SPaul E. McKenney __field(char, rcutorturename[RCUTORTURENAME_LEN]) 68991afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 69052494535SPaul E. McKenney __field(unsigned long, secs) 69152494535SPaul E. McKenney __field(unsigned long, c_old) 69252494535SPaul E. McKenney __field(unsigned long, c) 69391afaf30SPaul E. McKenney ), 69491afaf30SPaul E. McKenney 69591afaf30SPaul E. McKenney TP_fast_assign( 696b3c98314SPaul E. McKenney strncpy(__entry->rcutorturename, rcutorturename, 697b3c98314SPaul E. McKenney RCUTORTURENAME_LEN); 698b3c98314SPaul E. McKenney __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0; 69991afaf30SPaul E. McKenney __entry->rhp = rhp; 70052494535SPaul E. McKenney __entry->secs = secs; 70152494535SPaul E. McKenney __entry->c_old = c_old; 70252494535SPaul E. McKenney __entry->c = c; 70391afaf30SPaul E. McKenney ), 70491afaf30SPaul E. McKenney 70552494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 70652494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 70752494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 70891afaf30SPaul E. McKenney ); 70991afaf30SPaul E. McKenney 710a83eff0aSPaul E. McKenney /* 711a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 712a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 713d7e29933SPaul E. McKenney * "Begin": _rcu_barrier() started. 714d7e29933SPaul E. McKenney * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. 715d7e29933SPaul E. McKenney * "Inc1": _rcu_barrier() piggyback check counter incremented. 716d7e29933SPaul E. McKenney * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU 717d7e29933SPaul E. McKenney * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. 718d7e29933SPaul E. McKenney * "OnlineQ": _rcu_barrier() found online CPU with callbacks. 719d7e29933SPaul E. McKenney * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. 720a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 721f92c734fSPaul E. McKenney * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. 722a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 723a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 724d7e29933SPaul E. McKenney * "Inc2": _rcu_barrier() piggyback check counter incremented. 725a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 726a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 727a83eff0aSPaul E. McKenney */ 728a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 729a83eff0aSPaul E. McKenney 730e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 731a83eff0aSPaul E. McKenney 732a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 733a83eff0aSPaul E. McKenney 734a83eff0aSPaul E. McKenney TP_STRUCT__entry( 735e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 736e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 737a83eff0aSPaul E. McKenney __field(int, cpu) 738a83eff0aSPaul E. McKenney __field(int, cnt) 739a83eff0aSPaul E. McKenney __field(unsigned long, done) 740a83eff0aSPaul E. McKenney ), 741a83eff0aSPaul E. McKenney 742a83eff0aSPaul E. McKenney TP_fast_assign( 743a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 744a83eff0aSPaul E. McKenney __entry->s = s; 745a83eff0aSPaul E. McKenney __entry->cpu = cpu; 746a83eff0aSPaul E. McKenney __entry->cnt = cnt; 747a83eff0aSPaul E. McKenney __entry->done = done; 748a83eff0aSPaul E. McKenney ), 749a83eff0aSPaul E. McKenney 750a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 751a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 752a83eff0aSPaul E. McKenney __entry->done) 753a83eff0aSPaul E. McKenney ); 754a83eff0aSPaul E. McKenney 755d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 756d4c08f2aSPaul E. McKenney 757477351f7SPaul E. McKenney #define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0) 758bd9f0686SPaul E. McKenney #define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \ 75909c7b890SPaul E. McKenney level, grplo, grphi, event) \ 76009c7b890SPaul E. McKenney do { } while (0) 761e087816dSPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \ 762e087816dSPaul E. McKenney qsmask) do { } while (0) 763e087816dSPaul E. McKenney #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ 764e087816dSPaul E. McKenney do { } while (0) 765e087816dSPaul E. McKenney #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ 766e087816dSPaul E. McKenney do { } while (0) 7679261dd0dSPaul E. McKenney #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) 768d4c08f2aSPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0) 769d4c08f2aSPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0) 770486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 771486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 772486e2593SPaul E. McKenney while (0) 773d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 774dec98900SPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0) 775486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 776486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 777486e2593SPaul E. McKenney do { } while (0) 778486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 779486e2593SPaul E. McKenney do { } while (0) 780d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 781d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 7824968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 7834968c300SPaul E. McKenney do { } while (0) 78452494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 78552494535SPaul E. McKenney do { } while (0) 786a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 787d4c08f2aSPaul E. McKenney 788d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 789d4c08f2aSPaul E. McKenney 79029c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 79129c00b4aSPaul E. McKenney 79229c00b4aSPaul E. McKenney /* This part must be outside protection */ 79329c00b4aSPaul E. McKenney #include <trace/define_trace.h> 794