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 106abd13fddSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, unsigned long c, 107abd13fddSPaul E. McKenney u8 level, int grplo, int grphi, const char *gpevent), 10809c7b890SPaul E. McKenney 109abd13fddSPaul E. McKenney TP_ARGS(rcuname, gp_seq, c, level, grplo, grphi, gpevent), 11009c7b890SPaul E. McKenney 11109c7b890SPaul E. McKenney TP_STRUCT__entry( 112e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 113abd13fddSPaul E. McKenney __field(unsigned long, gp_seq) 11409c7b890SPaul E. McKenney __field(unsigned long, c) 11509c7b890SPaul E. McKenney __field(u8, level) 11609c7b890SPaul E. McKenney __field(int, grplo) 11709c7b890SPaul E. McKenney __field(int, grphi) 118e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 11909c7b890SPaul E. McKenney ), 12009c7b890SPaul E. McKenney 12109c7b890SPaul E. McKenney TP_fast_assign( 12209c7b890SPaul E. McKenney __entry->rcuname = rcuname; 123abd13fddSPaul E. McKenney __entry->gp_seq = gp_seq; 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 131abd13fddSPaul E. McKenney TP_printk("%s %lu %lu %u %d %d %s", 132abd13fddSPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->c, __entry->level, 133abd13fddSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gpevent) 13409c7b890SPaul E. McKenney ); 13509c7b890SPaul E. McKenney 13609c7b890SPaul E. McKenney /* 137d4c08f2aSPaul E. McKenney * Tracepoint for grace-period-initialization events. These are 138d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the new grace-period number, the 139d4c08f2aSPaul E. McKenney * rcu_node structure level, the starting and ending CPU covered by the 140d4c08f2aSPaul E. McKenney * rcu_node structure, and the mask of CPUs that will be waited for. 141d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 142d4c08f2aSPaul E. McKenney */ 143d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_grace_period_init, 144d4c08f2aSPaul E. McKenney 14563d86a7eSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, u8 level, 146d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 147d4c08f2aSPaul E. McKenney 14863d86a7eSPaul E. McKenney TP_ARGS(rcuname, gp_seq, level, grplo, grphi, qsmask), 149d4c08f2aSPaul E. McKenney 150d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 151e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 15263d86a7eSPaul E. McKenney __field(unsigned long, gp_seq) 153d4c08f2aSPaul E. McKenney __field(u8, level) 154d4c08f2aSPaul E. McKenney __field(int, grplo) 155d4c08f2aSPaul E. McKenney __field(int, grphi) 156d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 157d4c08f2aSPaul E. McKenney ), 158d4c08f2aSPaul E. McKenney 159d4c08f2aSPaul E. McKenney TP_fast_assign( 160d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 16163d86a7eSPaul E. McKenney __entry->gp_seq = gp_seq; 162d4c08f2aSPaul E. McKenney __entry->level = level; 163d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 164d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 165d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 166d4c08f2aSPaul E. McKenney ), 167d4c08f2aSPaul E. McKenney 168d4c08f2aSPaul E. McKenney TP_printk("%s %lu %u %d %d %lx", 16963d86a7eSPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->level, 170d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->qsmask) 171d4c08f2aSPaul E. McKenney ); 172d4c08f2aSPaul E. McKenney 173d4c08f2aSPaul E. McKenney /* 174e087816dSPaul E. McKenney * Tracepoint for expedited grace-period events. Takes a string identifying 175e087816dSPaul E. McKenney * the RCU flavor, the expedited grace-period sequence number, and a string 176e087816dSPaul E. McKenney * identifying the grace-period-related event as follows: 177e087816dSPaul E. McKenney * 178e087816dSPaul E. McKenney * "snap": Captured snapshot of expedited grace period sequence number. 179e087816dSPaul E. McKenney * "start": Started a real expedited grace period. 1809a414201SPaul E. McKenney * "reset": Started resetting the tree 1819a414201SPaul E. McKenney * "select": Started selecting the CPUs to wait on. 1827f5d42d0SPaul E. McKenney * "selectofl": Selected CPU partially offline. 1839a414201SPaul E. McKenney * "startwait": Started waiting on selected CPUs. 184e087816dSPaul E. McKenney * "end": Ended a real expedited grace period. 185f6a12f34SPaul E. McKenney * "endwake": Woke piggybackers up. 186e087816dSPaul E. McKenney * "done": Someone else did the expedited grace period for us. 187e087816dSPaul E. McKenney */ 188e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_grace_period, 189e087816dSPaul E. McKenney 190e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent), 191e087816dSPaul E. McKenney 192e087816dSPaul E. McKenney TP_ARGS(rcuname, gpseq, gpevent), 193e087816dSPaul E. McKenney 194e087816dSPaul E. McKenney TP_STRUCT__entry( 195e087816dSPaul E. McKenney __field(const char *, rcuname) 196e087816dSPaul E. McKenney __field(unsigned long, gpseq) 197e087816dSPaul E. McKenney __field(const char *, gpevent) 198e087816dSPaul E. McKenney ), 199e087816dSPaul E. McKenney 200e087816dSPaul E. McKenney TP_fast_assign( 201e087816dSPaul E. McKenney __entry->rcuname = rcuname; 202e087816dSPaul E. McKenney __entry->gpseq = gpseq; 203e087816dSPaul E. McKenney __entry->gpevent = gpevent; 204e087816dSPaul E. McKenney ), 205e087816dSPaul E. McKenney 206e087816dSPaul E. McKenney TP_printk("%s %lu %s", 207e087816dSPaul E. McKenney __entry->rcuname, __entry->gpseq, __entry->gpevent) 208e087816dSPaul E. McKenney ); 209e087816dSPaul E. McKenney 210e087816dSPaul E. McKenney /* 211e087816dSPaul E. McKenney * Tracepoint for expedited grace-period funnel-locking events. Takes a 212e087816dSPaul E. McKenney * string identifying the RCU flavor, an integer identifying the rcu_node 213e087816dSPaul E. McKenney * combining-tree level, another pair of integers identifying the lowest- 214e087816dSPaul E. McKenney * and highest-numbered CPU associated with the current rcu_node structure, 215e087816dSPaul E. McKenney * and a string. identifying the grace-period-related event as follows: 216e087816dSPaul E. McKenney * 217f6a12f34SPaul E. McKenney * "nxtlvl": Advance to next level of rcu_node funnel 218f6a12f34SPaul E. McKenney * "wait": Wait for someone else to do expedited GP 219e087816dSPaul E. McKenney */ 220e087816dSPaul E. McKenney TRACE_EVENT(rcu_exp_funnel_lock, 221e087816dSPaul E. McKenney 222e087816dSPaul E. McKenney TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi, 223e087816dSPaul E. McKenney const char *gpevent), 224e087816dSPaul E. McKenney 225e087816dSPaul E. McKenney TP_ARGS(rcuname, level, grplo, grphi, gpevent), 226e087816dSPaul E. McKenney 227e087816dSPaul E. McKenney TP_STRUCT__entry( 228e087816dSPaul E. McKenney __field(const char *, rcuname) 229e087816dSPaul E. McKenney __field(u8, level) 230e087816dSPaul E. McKenney __field(int, grplo) 231e087816dSPaul E. McKenney __field(int, grphi) 232e087816dSPaul E. McKenney __field(const char *, gpevent) 233e087816dSPaul E. McKenney ), 234e087816dSPaul E. McKenney 235e087816dSPaul E. McKenney TP_fast_assign( 236e087816dSPaul E. McKenney __entry->rcuname = rcuname; 237e087816dSPaul E. McKenney __entry->level = level; 238e087816dSPaul E. McKenney __entry->grplo = grplo; 239e087816dSPaul E. McKenney __entry->grphi = grphi; 240e087816dSPaul E. McKenney __entry->gpevent = gpevent; 241e087816dSPaul E. McKenney ), 242e087816dSPaul E. McKenney 243e087816dSPaul E. McKenney TP_printk("%s %d %d %d %s", 244e087816dSPaul E. McKenney __entry->rcuname, __entry->level, __entry->grplo, 245e087816dSPaul E. McKenney __entry->grphi, __entry->gpevent) 246e087816dSPaul E. McKenney ); 247e087816dSPaul E. McKenney 2489122caf9SSteven Rostedt (VMware) #ifdef CONFIG_RCU_NOCB_CPU 249e087816dSPaul E. McKenney /* 2509261dd0dSPaul E. McKenney * Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended 2519261dd0dSPaul E. McKenney * to assist debugging of these handoffs. 2529261dd0dSPaul E. McKenney * 2539261dd0dSPaul E. McKenney * The first argument is the name of the RCU flavor, and the second is 2549261dd0dSPaul E. McKenney * the number of the offloaded CPU are extracted. The third and final 2559261dd0dSPaul E. McKenney * argument is a string as follows: 2569261dd0dSPaul E. McKenney * 2579261dd0dSPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 2589fdd3bc9SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 2599261dd0dSPaul E. McKenney * "WakeOvf": Wake rcuo kthread, CB list is huge. 2609fdd3bc9SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 2619261dd0dSPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 2629261dd0dSPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 2639fdd3bc9SPaul E. McKenney * "DeferredWake": Carried out the "IsDeferred" wakeup. 26469a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 26569a79bb1SPaul E. McKenney * "Sleep": Sleep waiting for CBs for !rcu_nocb_poll. 2669261dd0dSPaul E. McKenney * "WokeEmpty": rcuo kthread woke to find empty list. 2679261dd0dSPaul E. McKenney * "WokeNonEmpty": rcuo kthread woke to find non-empty list. 26869a79bb1SPaul E. McKenney * "WaitQueue": Enqueue partially done, timed wait for it to complete. 26969a79bb1SPaul E. McKenney * "WokeQueue": Partial enqueue now complete. 2709261dd0dSPaul E. McKenney */ 2719261dd0dSPaul E. McKenney TRACE_EVENT(rcu_nocb_wake, 2729261dd0dSPaul E. McKenney 2739261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2749261dd0dSPaul E. McKenney 2759261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2769261dd0dSPaul E. McKenney 2779261dd0dSPaul E. McKenney TP_STRUCT__entry( 2789261dd0dSPaul E. McKenney __field(const char *, rcuname) 2799261dd0dSPaul E. McKenney __field(int, cpu) 2809261dd0dSPaul E. McKenney __field(const char *, reason) 2819261dd0dSPaul E. McKenney ), 2829261dd0dSPaul E. McKenney 2839261dd0dSPaul E. McKenney TP_fast_assign( 2849261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2859261dd0dSPaul E. McKenney __entry->cpu = cpu; 2869261dd0dSPaul E. McKenney __entry->reason = reason; 2879261dd0dSPaul E. McKenney ), 2889261dd0dSPaul E. McKenney 2899261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 2909261dd0dSPaul E. McKenney ); 2919122caf9SSteven Rostedt (VMware) #endif 2929261dd0dSPaul E. McKenney 2939261dd0dSPaul E. McKenney /* 294d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 295d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 296d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 297d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 298d4c08f2aSPaul E. McKenney */ 299d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_preempt_task, 300d4c08f2aSPaul E. McKenney 301598ce094SPaul E. McKenney TP_PROTO(const char *rcuname, int pid, unsigned long gp_seq), 302d4c08f2aSPaul E. McKenney 303598ce094SPaul E. McKenney TP_ARGS(rcuname, pid, gp_seq), 304d4c08f2aSPaul E. McKenney 305d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 306e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 307598ce094SPaul E. McKenney __field(unsigned long, gp_seq) 308d4c08f2aSPaul E. McKenney __field(int, pid) 309d4c08f2aSPaul E. McKenney ), 310d4c08f2aSPaul E. McKenney 311d4c08f2aSPaul E. McKenney TP_fast_assign( 312d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 313598ce094SPaul E. McKenney __entry->gp_seq = gp_seq; 314d4c08f2aSPaul E. McKenney __entry->pid = pid; 315d4c08f2aSPaul E. McKenney ), 316d4c08f2aSPaul E. McKenney 317d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 318598ce094SPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->pid) 319d4c08f2aSPaul E. McKenney ); 320d4c08f2aSPaul E. McKenney 321d4c08f2aSPaul E. McKenney /* 322d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 323d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 324d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 325d4c08f2aSPaul E. McKenney */ 326d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_unlock_preempted_task, 327d4c08f2aSPaul E. McKenney 328865aa1e0SPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid), 329d4c08f2aSPaul E. McKenney 330865aa1e0SPaul E. McKenney TP_ARGS(rcuname, gp_seq, pid), 331d4c08f2aSPaul E. McKenney 332d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 333e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 334865aa1e0SPaul E. McKenney __field(unsigned long, gp_seq) 335d4c08f2aSPaul E. McKenney __field(int, pid) 336d4c08f2aSPaul E. McKenney ), 337d4c08f2aSPaul E. McKenney 338d4c08f2aSPaul E. McKenney TP_fast_assign( 339d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 340865aa1e0SPaul E. McKenney __entry->gp_seq = gp_seq; 341d4c08f2aSPaul E. McKenney __entry->pid = pid; 342d4c08f2aSPaul E. McKenney ), 343d4c08f2aSPaul E. McKenney 344865aa1e0SPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gp_seq, __entry->pid) 345d4c08f2aSPaul E. McKenney ); 346d4c08f2aSPaul E. McKenney 347d4c08f2aSPaul E. McKenney /* 348d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 349d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 350d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 351d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 352d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 353d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 354d4c08f2aSPaul E. McKenney */ 355d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_quiescent_state_report, 356d4c08f2aSPaul E. McKenney 357e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, 358d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 359d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 360d4c08f2aSPaul E. McKenney 361d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks), 362d4c08f2aSPaul E. McKenney 363d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 364e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 365d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 366d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 367d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 368d4c08f2aSPaul E. McKenney __field(u8, level) 369d4c08f2aSPaul E. McKenney __field(int, grplo) 370d4c08f2aSPaul E. McKenney __field(int, grphi) 371d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 372d4c08f2aSPaul E. McKenney ), 373d4c08f2aSPaul E. McKenney 374d4c08f2aSPaul E. McKenney TP_fast_assign( 375d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 376d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 377d4c08f2aSPaul E. McKenney __entry->mask = mask; 378d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 379d4c08f2aSPaul E. McKenney __entry->level = level; 380d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 381d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 382d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 383d4c08f2aSPaul E. McKenney ), 384d4c08f2aSPaul E. McKenney 385d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 386d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 387d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 388d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 389d4c08f2aSPaul E. McKenney ); 390d4c08f2aSPaul E. McKenney 391d4c08f2aSPaul E. McKenney /* 392d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 3933a19b46aSPaul E. McKenney * These trace events include the type of RCU, the grace-period number that 3943a19b46aSPaul E. McKenney * was blocked by the CPU, the CPU itself, and the type of quiescent state, 3953a19b46aSPaul E. McKenney * which can be "dti" for dyntick-idle mode, "ofl" for CPU offline, "kick" 3963a19b46aSPaul E. McKenney * when kicking a CPU that has been in dyntick-idle mode for too long, or 3973a19b46aSPaul E. McKenney * "rqc" if the CPU got a quiescent state via its rcu_qs_ctr. 398d4c08f2aSPaul E. McKenney */ 399d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_fqs, 400d4c08f2aSPaul E. McKenney 401e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent), 402d4c08f2aSPaul E. McKenney 403d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, gpnum, cpu, qsevent), 404d4c08f2aSPaul E. McKenney 405d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 406e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 407d4c08f2aSPaul E. McKenney __field(unsigned long, gpnum) 408d4c08f2aSPaul E. McKenney __field(int, cpu) 409e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 410d4c08f2aSPaul E. McKenney ), 411d4c08f2aSPaul E. McKenney 412d4c08f2aSPaul E. McKenney TP_fast_assign( 413d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 414d4c08f2aSPaul E. McKenney __entry->gpnum = gpnum; 415d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 416d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 417d4c08f2aSPaul E. McKenney ), 418d4c08f2aSPaul E. McKenney 419d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 420d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->gpnum, 421d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 422d4c08f2aSPaul E. McKenney ); 423d4c08f2aSPaul E. McKenney 42428f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 425d4c08f2aSPaul E. McKenney 426d4c08f2aSPaul E. McKenney /* 427d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 428bd2b879aSPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "Startirq" for 429bd2b879aSPaul E. McKenney * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it 430bd2b879aSPaul E. McKenney * to irq/NMI, "--=" for events moving towards idle, and "++=" for events 431e68bbb26SPaul E. McKenney * moving away from idle. 432045fb931SPaul E. McKenney * 433045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 434e68bbb26SPaul E. McKenney * depth before and after the event of interest, and a third number that is 435e68bbb26SPaul E. McKenney * the ->dynticks counter. Note that task-related and interrupt-related 436e68bbb26SPaul E. McKenney * events use two separate counters, and that the "++=" and "--=" events 437e68bbb26SPaul E. McKenney * for irq/NMI will change the counter by two, otherwise by one. 438d4c08f2aSPaul E. McKenney */ 439d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_dyntick, 440d4c08f2aSPaul E. McKenney 441dec98900SPaul E. McKenney TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks), 442d4c08f2aSPaul E. McKenney 443dec98900SPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting, dynticks), 444d4c08f2aSPaul E. McKenney 445d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 446e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 44784585aa8SPaul E. McKenney __field(long, oldnesting) 44884585aa8SPaul E. McKenney __field(long, newnesting) 449dec98900SPaul E. McKenney __field(int, dynticks) 450d4c08f2aSPaul E. McKenney ), 451d4c08f2aSPaul E. McKenney 452d4c08f2aSPaul E. McKenney TP_fast_assign( 453d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4544145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4554145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 456dec98900SPaul E. McKenney __entry->dynticks = atomic_read(&dynticks); 457d4c08f2aSPaul E. McKenney ), 458d4c08f2aSPaul E. McKenney 459dec98900SPaul E. McKenney TP_printk("%s %lx %lx %#3x", __entry->polarity, 460dec98900SPaul E. McKenney __entry->oldnesting, __entry->newnesting, 461dec98900SPaul E. McKenney __entry->dynticks & 0xfff) 462433cdddcSPaul E. McKenney ); 463433cdddcSPaul E. McKenney 464433cdddcSPaul E. McKenney /* 465d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 466d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 467486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 468486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 469486e2593SPaul E. McKenney * total number of callbacks queued. 470d4c08f2aSPaul E. McKenney */ 471d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_callback, 472d4c08f2aSPaul E. McKenney 473e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 474486e2593SPaul E. McKenney long qlen), 475d4c08f2aSPaul E. McKenney 476486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 477d4c08f2aSPaul E. McKenney 478d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 479e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 480d4c08f2aSPaul E. McKenney __field(void *, rhp) 481d4c08f2aSPaul E. McKenney __field(void *, func) 482486e2593SPaul E. McKenney __field(long, qlen_lazy) 483d4c08f2aSPaul E. McKenney __field(long, qlen) 484d4c08f2aSPaul E. McKenney ), 485d4c08f2aSPaul E. McKenney 486d4c08f2aSPaul E. McKenney TP_fast_assign( 487d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 488d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 489d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 490486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 491d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 492d4c08f2aSPaul E. McKenney ), 493d4c08f2aSPaul E. McKenney 494486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%pf %ld/%ld", 495486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 496486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 497d4c08f2aSPaul E. McKenney ); 498d4c08f2aSPaul E. McKenney 499d4c08f2aSPaul E. McKenney /* 500d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 501d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 502d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 503d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 504486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 505486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 506d4c08f2aSPaul E. McKenney */ 507d4c08f2aSPaul E. McKenney TRACE_EVENT(rcu_kfree_callback, 508d4c08f2aSPaul E. McKenney 509e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 510486e2593SPaul E. McKenney long qlen_lazy, long qlen), 511d4c08f2aSPaul E. McKenney 512486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 513d4c08f2aSPaul E. McKenney 514d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 515e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 516d4c08f2aSPaul E. McKenney __field(void *, rhp) 517d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 518486e2593SPaul E. McKenney __field(long, qlen_lazy) 519d4c08f2aSPaul E. McKenney __field(long, qlen) 520d4c08f2aSPaul E. McKenney ), 521d4c08f2aSPaul E. McKenney 522d4c08f2aSPaul E. McKenney TP_fast_assign( 523d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 524d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 525d4c08f2aSPaul E. McKenney __entry->offset = offset; 526486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 527d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 528d4c08f2aSPaul E. McKenney ), 529d4c08f2aSPaul E. McKenney 530486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 531d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 532486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 533d4c08f2aSPaul E. McKenney ); 534d4c08f2aSPaul E. McKenney 535300df91cSPaul E. McKenney /* 536300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 53772fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 538486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 539486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 540486e2593SPaul E. McKenney * the current RCU-callback batch limit. 54129c00b4aSPaul E. McKenney */ 54229c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_start, 54329c00b4aSPaul E. McKenney 544e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 54529c00b4aSPaul E. McKenney 546486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 54729c00b4aSPaul E. McKenney 54829c00b4aSPaul E. McKenney TP_STRUCT__entry( 549e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 550486e2593SPaul E. McKenney __field(long, qlen_lazy) 551300df91cSPaul E. McKenney __field(long, qlen) 5523aac7a8dSPaul E. McKenney __field(long, blimit) 55329c00b4aSPaul E. McKenney ), 55429c00b4aSPaul E. McKenney 55529c00b4aSPaul E. McKenney TP_fast_assign( 55672fe701bSPaul E. McKenney __entry->rcuname = rcuname; 557486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 558300df91cSPaul E. McKenney __entry->qlen = qlen; 55929c00b4aSPaul E. McKenney __entry->blimit = blimit; 56029c00b4aSPaul E. McKenney ), 56129c00b4aSPaul E. McKenney 5623aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 563486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 564486e2593SPaul E. McKenney __entry->blimit) 56529c00b4aSPaul E. McKenney ); 56629c00b4aSPaul E. McKenney 56729c00b4aSPaul E. McKenney /* 568300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 569d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 570d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 57129c00b4aSPaul E. McKenney */ 57229c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_callback, 57329c00b4aSPaul E. McKenney 574e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 57529c00b4aSPaul E. McKenney 576d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 57729c00b4aSPaul E. McKenney 57829c00b4aSPaul E. McKenney TP_STRUCT__entry( 579e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 58029c00b4aSPaul E. McKenney __field(void *, rhp) 58129c00b4aSPaul E. McKenney __field(void *, func) 58229c00b4aSPaul E. McKenney ), 58329c00b4aSPaul E. McKenney 58429c00b4aSPaul E. McKenney TP_fast_assign( 585d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 58629c00b4aSPaul E. McKenney __entry->rhp = rhp; 58729c00b4aSPaul E. McKenney __entry->func = rhp->func; 58829c00b4aSPaul E. McKenney ), 58929c00b4aSPaul E. McKenney 590d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%pf", 591d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 59229c00b4aSPaul E. McKenney ); 59329c00b4aSPaul E. McKenney 59429c00b4aSPaul E. McKenney /* 595300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 596d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 597d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 598d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 599d4c08f2aSPaul E. McKenney * data structure. 60029c00b4aSPaul E. McKenney */ 60129c00b4aSPaul E. McKenney TRACE_EVENT(rcu_invoke_kfree_callback, 60229c00b4aSPaul E. McKenney 603e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 60429c00b4aSPaul E. McKenney 605d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 60629c00b4aSPaul E. McKenney 60729c00b4aSPaul E. McKenney TP_STRUCT__entry( 608e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 60929c00b4aSPaul E. McKenney __field(void *, rhp) 61029c00b4aSPaul E. McKenney __field(unsigned long, offset) 61129c00b4aSPaul E. McKenney ), 61229c00b4aSPaul E. McKenney 61329c00b4aSPaul E. McKenney TP_fast_assign( 614d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 61529c00b4aSPaul E. McKenney __entry->rhp = rhp; 61629c00b4aSPaul E. McKenney __entry->offset = offset; 61729c00b4aSPaul E. McKenney ), 61829c00b4aSPaul E. McKenney 619d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 620d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 62129c00b4aSPaul E. McKenney ); 62229c00b4aSPaul E. McKenney 62329c00b4aSPaul E. McKenney /* 624300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6254968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6264968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6274968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6284968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6294968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6304968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6314968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6324968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 63329c00b4aSPaul E. McKenney */ 63429c00b4aSPaul E. McKenney TRACE_EVENT(rcu_batch_end, 63529c00b4aSPaul E. McKenney 636e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 63715f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 63829c00b4aSPaul E. McKenney 6394968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 64029c00b4aSPaul E. McKenney 64129c00b4aSPaul E. McKenney TP_STRUCT__entry( 642e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 64329c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 64415f5191bSPaul E. McKenney __field(char, cb) 64515f5191bSPaul E. McKenney __field(char, nr) 64615f5191bSPaul E. McKenney __field(char, iit) 64715f5191bSPaul E. McKenney __field(char, risk) 64829c00b4aSPaul E. McKenney ), 64929c00b4aSPaul E. McKenney 65029c00b4aSPaul E. McKenney TP_fast_assign( 65172fe701bSPaul E. McKenney __entry->rcuname = rcuname; 65229c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6534968c300SPaul E. McKenney __entry->cb = cb; 6544968c300SPaul E. McKenney __entry->nr = nr; 6554968c300SPaul E. McKenney __entry->iit = iit; 6564968c300SPaul E. McKenney __entry->risk = risk; 65729c00b4aSPaul E. McKenney ), 65829c00b4aSPaul E. McKenney 6594968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6604968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6614968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6624968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6634968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6644968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 66529c00b4aSPaul E. McKenney ); 66629c00b4aSPaul E. McKenney 66791afaf30SPaul E. McKenney /* 66891afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 66991afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 670d0af39e8SPaul E. McKenney * is the callback address. The third argument is the start time in 671d0af39e8SPaul E. McKenney * seconds, and the last two arguments are the grace period numbers 672d0af39e8SPaul E. McKenney * at the beginning and end of the read, respectively. Note that the 673d0af39e8SPaul E. McKenney * callback address can be NULL. 67491afaf30SPaul E. McKenney */ 675b3c98314SPaul E. McKenney #define RCUTORTURENAME_LEN 8 67691afaf30SPaul E. McKenney TRACE_EVENT(rcu_torture_read, 67791afaf30SPaul E. McKenney 678e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 67952494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 68091afaf30SPaul E. McKenney 68152494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 68291afaf30SPaul E. McKenney 68391afaf30SPaul E. McKenney TP_STRUCT__entry( 684b3c98314SPaul E. McKenney __field(char, rcutorturename[RCUTORTURENAME_LEN]) 68591afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 68652494535SPaul E. McKenney __field(unsigned long, secs) 68752494535SPaul E. McKenney __field(unsigned long, c_old) 68852494535SPaul E. McKenney __field(unsigned long, c) 68991afaf30SPaul E. McKenney ), 69091afaf30SPaul E. McKenney 69191afaf30SPaul E. McKenney TP_fast_assign( 692b3c98314SPaul E. McKenney strncpy(__entry->rcutorturename, rcutorturename, 693b3c98314SPaul E. McKenney RCUTORTURENAME_LEN); 694b3c98314SPaul E. McKenney __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0; 69591afaf30SPaul E. McKenney __entry->rhp = rhp; 69652494535SPaul E. McKenney __entry->secs = secs; 69752494535SPaul E. McKenney __entry->c_old = c_old; 69852494535SPaul E. McKenney __entry->c = c; 69991afaf30SPaul E. McKenney ), 70091afaf30SPaul E. McKenney 70152494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 70252494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 70352494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 70491afaf30SPaul E. McKenney ); 70591afaf30SPaul E. McKenney 706a83eff0aSPaul E. McKenney /* 707a83eff0aSPaul E. McKenney * Tracepoint for _rcu_barrier() execution. The string "s" describes 708a83eff0aSPaul E. McKenney * the _rcu_barrier phase: 709d7e29933SPaul E. McKenney * "Begin": _rcu_barrier() started. 710d7e29933SPaul E. McKenney * "EarlyExit": _rcu_barrier() piggybacked, thus early exit. 711d7e29933SPaul E. McKenney * "Inc1": _rcu_barrier() piggyback check counter incremented. 712d7e29933SPaul E. McKenney * "OfflineNoCB": _rcu_barrier() found callback on never-online CPU 713d7e29933SPaul E. McKenney * "OnlineNoCB": _rcu_barrier() found online no-CBs CPU. 714d7e29933SPaul E. McKenney * "OnlineQ": _rcu_barrier() found online CPU with callbacks. 715d7e29933SPaul E. McKenney * "OnlineNQ": _rcu_barrier() found online CPU, no callbacks. 716a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 717f92c734fSPaul E. McKenney * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. 718a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 719a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 720d7e29933SPaul E. McKenney * "Inc2": _rcu_barrier() piggyback check counter incremented. 721a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 722a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 723a83eff0aSPaul E. McKenney */ 724a83eff0aSPaul E. McKenney TRACE_EVENT(rcu_barrier, 725a83eff0aSPaul E. McKenney 726e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 727a83eff0aSPaul E. McKenney 728a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 729a83eff0aSPaul E. McKenney 730a83eff0aSPaul E. McKenney TP_STRUCT__entry( 731e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 732e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 733a83eff0aSPaul E. McKenney __field(int, cpu) 734a83eff0aSPaul E. McKenney __field(int, cnt) 735a83eff0aSPaul E. McKenney __field(unsigned long, done) 736a83eff0aSPaul E. McKenney ), 737a83eff0aSPaul E. McKenney 738a83eff0aSPaul E. McKenney TP_fast_assign( 739a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 740a83eff0aSPaul E. McKenney __entry->s = s; 741a83eff0aSPaul E. McKenney __entry->cpu = cpu; 742a83eff0aSPaul E. McKenney __entry->cnt = cnt; 743a83eff0aSPaul E. McKenney __entry->done = done; 744a83eff0aSPaul E. McKenney ), 745a83eff0aSPaul E. McKenney 746a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 747a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 748a83eff0aSPaul E. McKenney __entry->done) 749a83eff0aSPaul E. McKenney ); 750a83eff0aSPaul E. McKenney 751d4c08f2aSPaul E. McKenney #else /* #ifdef CONFIG_RCU_TRACE */ 752d4c08f2aSPaul E. McKenney 753477351f7SPaul E. McKenney #define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0) 754abd13fddSPaul E. McKenney #define trace_rcu_future_grace_period(rcuname, gp_seq, c, \ 75509c7b890SPaul E. McKenney level, grplo, grphi, event) \ 75609c7b890SPaul E. McKenney do { } while (0) 75763d86a7eSPaul E. McKenney #define trace_rcu_grace_period_init(rcuname, gp_seq, level, grplo, grphi, \ 758e087816dSPaul E. McKenney qsmask) do { } while (0) 759e087816dSPaul E. McKenney #define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \ 760e087816dSPaul E. McKenney do { } while (0) 761e087816dSPaul E. McKenney #define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \ 762e087816dSPaul E. McKenney do { } while (0) 7639261dd0dSPaul E. McKenney #define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0) 764598ce094SPaul E. McKenney #define trace_rcu_preempt_task(rcuname, pid, gp_seq) do { } while (0) 765865aa1e0SPaul E. McKenney #define trace_rcu_unlock_preempted_task(rcuname, gp_seq, pid) do { } while (0) 766486e2593SPaul E. McKenney #define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \ 767486e2593SPaul E. McKenney grplo, grphi, gp_tasks) do { } \ 768486e2593SPaul E. McKenney while (0) 769d4c08f2aSPaul E. McKenney #define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0) 770dec98900SPaul E. McKenney #define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0) 771486e2593SPaul E. McKenney #define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0) 772486e2593SPaul E. McKenney #define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \ 773486e2593SPaul E. McKenney do { } while (0) 774486e2593SPaul E. McKenney #define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \ 775486e2593SPaul E. McKenney do { } while (0) 776d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0) 777d4c08f2aSPaul E. McKenney #define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0) 7784968c300SPaul E. McKenney #define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \ 7794968c300SPaul E. McKenney do { } while (0) 78052494535SPaul E. McKenney #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \ 78152494535SPaul E. McKenney do { } while (0) 782a83eff0aSPaul E. McKenney #define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0) 783d4c08f2aSPaul E. McKenney 784d4c08f2aSPaul E. McKenney #endif /* #else #ifdef CONFIG_RCU_TRACE */ 785d4c08f2aSPaul E. McKenney 78629c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 78729c00b4aSPaul E. McKenney 78829c00b4aSPaul E. McKenney /* This part must be outside protection */ 78929c00b4aSPaul E. McKenney #include <trace/define_trace.h> 790