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 104f5fbd78SYafang Shao #ifdef CONFIG_RCU_TRACE 114f5fbd78SYafang Shao #define TRACE_EVENT_RCU TRACE_EVENT 124f5fbd78SYafang Shao #else 134f5fbd78SYafang Shao #define TRACE_EVENT_RCU TRACE_EVENT_NOP 144f5fbd78SYafang Shao #endif 154f5fbd78SYafang Shao 1629c00b4aSPaul E. McKenney /* 17300df91cSPaul E. McKenney * Tracepoint for start/end markers used for utilization calculations. 18300df91cSPaul E. McKenney * By convention, the string is of the following forms: 19300df91cSPaul E. McKenney * 20300df91cSPaul E. McKenney * "Start <activity>" -- Mark the start of the specified activity, 21300df91cSPaul E. McKenney * such as "context switch". Nesting is permitted. 22300df91cSPaul E. McKenney * "End <activity>" -- Mark the end of the specified activity. 23385680a9SPaul E. McKenney * 24385680a9SPaul E. McKenney * An "@" character within "<activity>" is a comment character: Data 25385680a9SPaul E. McKenney * reduction scripts will ignore the "@" and the remainder of the line. 26300df91cSPaul E. McKenney */ 27300df91cSPaul E. McKenney TRACE_EVENT(rcu_utilization, 28300df91cSPaul E. McKenney 29e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *s), 30300df91cSPaul E. McKenney 31300df91cSPaul E. McKenney TP_ARGS(s), 32300df91cSPaul E. McKenney 33300df91cSPaul E. McKenney TP_STRUCT__entry( 34e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 35300df91cSPaul E. McKenney ), 36300df91cSPaul E. McKenney 37300df91cSPaul E. McKenney TP_fast_assign( 38300df91cSPaul E. McKenney __entry->s = s; 39300df91cSPaul E. McKenney ), 40300df91cSPaul E. McKenney 41300df91cSPaul E. McKenney TP_printk("%s", __entry->s) 42300df91cSPaul E. McKenney ); 43300df91cSPaul E. McKenney 4428f6569aSPranith Kumar #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) 45d4c08f2aSPaul E. McKenney 46d4c08f2aSPaul E. McKenney /* 4763c4db78SPaul E. McKenney * Tracepoint for grace-period events. Takes a string identifying the 4863c4db78SPaul E. McKenney * RCU flavor, the grace-period number, and a string identifying the 4963c4db78SPaul E. McKenney * grace-period-related event as follows: 5063c4db78SPaul E. McKenney * 5163c4db78SPaul E. McKenney * "AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL. 5263c4db78SPaul E. McKenney * "AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL. 53bb311eccSPaul E. McKenney * "newreq": Request a new grace period. 5463c4db78SPaul E. McKenney * "start": Start a grace period. 5563c4db78SPaul E. McKenney * "cpustart": CPU first notices a grace-period start. 5663c4db78SPaul E. McKenney * "cpuqs": CPU passes through a quiescent state. 5763c4db78SPaul E. McKenney * "cpuonl": CPU comes online. 5863c4db78SPaul E. McKenney * "cpuofl": CPU goes offline. 59477351f7SPaul E. McKenney * "cpuofl-bgp": CPU goes offline while blocking a grace period. 6063c4db78SPaul E. McKenney * "reqwait": GP kthread sleeps waiting for grace-period request. 6163c4db78SPaul E. McKenney * "reqwaitsig": GP kthread awakened by signal from reqwait state. 6263c4db78SPaul E. McKenney * "fqswait": GP kthread waiting until time to force quiescent states. 6363c4db78SPaul E. McKenney * "fqsstart": GP kthread starts forcing quiescent states. 6463c4db78SPaul E. McKenney * "fqsend": GP kthread done forcing quiescent states. 6563c4db78SPaul E. McKenney * "fqswaitsig": GP kthread awakened by signal from fqswait state. 6663c4db78SPaul E. McKenney * "end": End a grace period. 6763c4db78SPaul E. McKenney * "cpuend": CPU first notices a grace-period end. 68d4c08f2aSPaul E. McKenney */ 694f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_grace_period, 70d4c08f2aSPaul E. McKenney 71477351f7SPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent), 72d4c08f2aSPaul E. McKenney 73477351f7SPaul E. McKenney TP_ARGS(rcuname, gp_seq, gpevent), 74d4c08f2aSPaul E. McKenney 75d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 76e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 77477351f7SPaul E. McKenney __field(unsigned long, gp_seq) 78e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 79d4c08f2aSPaul E. McKenney ), 80d4c08f2aSPaul E. McKenney 81d4c08f2aSPaul E. McKenney TP_fast_assign( 82d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 83477351f7SPaul E. McKenney __entry->gp_seq = gp_seq; 84d4c08f2aSPaul E. McKenney __entry->gpevent = gpevent; 85d4c08f2aSPaul E. McKenney ), 86d4c08f2aSPaul E. McKenney 87d4c08f2aSPaul E. McKenney TP_printk("%s %lu %s", 88477351f7SPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->gpevent) 89d4c08f2aSPaul E. McKenney ); 90d4c08f2aSPaul E. McKenney 91d4c08f2aSPaul E. McKenney /* 92c21b8b3eSPaul E. McKenney * Tracepoint for future grace-period events. The caller should pull 93c21b8b3eSPaul E. McKenney * the data from the rcu_node structure, other than rcuname, which comes 94c21b8b3eSPaul E. McKenney * from the rcu_state structure, and event, which is one of the following: 9509c7b890SPaul E. McKenney * 967cc0fffdSPaul E. McKenney * "Cleanup": Clean up rcu_node structure after previous GP. 977cc0fffdSPaul E. McKenney * "CleanupMore": Clean up, and another GP is needed. 987cc0fffdSPaul E. McKenney * "EndWait": Complete wait. 997cc0fffdSPaul E. McKenney * "NoGPkthread": The RCU grace-period kthread has not yet started. 100c21b8b3eSPaul E. McKenney * "Prestarted": Someone beat us to the request 101a2165e41SPaul E. McKenney * "Startedleaf": Leaf node marked for future GP. 102a2165e41SPaul E. McKenney * "Startedleafroot": All nodes from leaf to root marked for future GP. 10309c7b890SPaul E. McKenney * "Startedroot": Requested a nocb grace period based on root-node data. 1047cc0fffdSPaul E. McKenney * "Startleaf": Request a grace period based on leaf-node data. 10509c7b890SPaul E. McKenney * "StartWait": Start waiting for the requested grace period. 10609c7b890SPaul E. McKenney */ 1074f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_future_grace_period, 10809c7b890SPaul E. McKenney 109b73de91dSJoel Fernandes TP_PROTO(const char *rcuname, unsigned long gp_seq, 110b73de91dSJoel Fernandes unsigned long gp_seq_req, u8 level, int grplo, int grphi, 111b73de91dSJoel Fernandes const char *gpevent), 11209c7b890SPaul E. McKenney 113b73de91dSJoel Fernandes TP_ARGS(rcuname, gp_seq, gp_seq_req, level, grplo, grphi, gpevent), 11409c7b890SPaul E. McKenney 11509c7b890SPaul E. McKenney TP_STRUCT__entry( 116e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 117abd13fddSPaul E. McKenney __field(unsigned long, gp_seq) 118b73de91dSJoel Fernandes __field(unsigned long, gp_seq_req) 11909c7b890SPaul E. McKenney __field(u8, level) 12009c7b890SPaul E. McKenney __field(int, grplo) 12109c7b890SPaul E. McKenney __field(int, grphi) 122e66c33d5SSteven Rostedt (Red Hat) __field(const char *, gpevent) 12309c7b890SPaul E. McKenney ), 12409c7b890SPaul E. McKenney 12509c7b890SPaul E. McKenney TP_fast_assign( 12609c7b890SPaul E. McKenney __entry->rcuname = rcuname; 127abd13fddSPaul E. McKenney __entry->gp_seq = gp_seq; 128b73de91dSJoel Fernandes __entry->gp_seq_req = gp_seq_req; 12909c7b890SPaul E. McKenney __entry->level = level; 13009c7b890SPaul E. McKenney __entry->grplo = grplo; 13109c7b890SPaul E. McKenney __entry->grphi = grphi; 13209c7b890SPaul E. McKenney __entry->gpevent = gpevent; 13309c7b890SPaul E. McKenney ), 13409c7b890SPaul E. McKenney 135abd13fddSPaul E. McKenney TP_printk("%s %lu %lu %u %d %d %s", 136b73de91dSJoel Fernandes __entry->rcuname, __entry->gp_seq, __entry->gp_seq_req, __entry->level, 137abd13fddSPaul E. McKenney __entry->grplo, __entry->grphi, __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 */ 1474f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_grace_period_init, 148d4c08f2aSPaul E. McKenney 14963d86a7eSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, u8 level, 150d4c08f2aSPaul E. McKenney int grplo, int grphi, unsigned long qsmask), 151d4c08f2aSPaul E. McKenney 15263d86a7eSPaul E. McKenney TP_ARGS(rcuname, gp_seq, level, grplo, grphi, qsmask), 153d4c08f2aSPaul E. McKenney 154d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 155e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 15663d86a7eSPaul E. McKenney __field(unsigned long, gp_seq) 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; 16563d86a7eSPaul E. McKenney __entry->gp_seq = gp_seq; 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", 17363d86a7eSPaul E. McKenney __entry->rcuname, __entry->gp_seq, __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 */ 1924f5fbd78SYafang Shao TRACE_EVENT_RCU(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 */ 2244f5fbd78SYafang Shao TRACE_EVENT_RCU(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 * 261d01f8620SPaul E. McKenney * "AlreadyAwake": The to-be-awakened rcuo kthread is already awake. 262d01f8620SPaul E. McKenney * "Bypass": rcuo GP kthread sees non-empty ->nocb_bypass. 263d01f8620SPaul E. McKenney * "CBSleep": rcuo CB kthread sleeping waiting for CBs. 264d01f8620SPaul E. McKenney * "Check": rcuo GP kthread checking specified CPU for work. 265d01f8620SPaul E. McKenney * "DeferredWake": Timer expired or polled check, time to wake. 266d01f8620SPaul E. McKenney * "DoWake": The to-be-awakened rcuo kthread needs to be awakened. 267d01f8620SPaul E. McKenney * "EndSleep": Done waiting for GP for !rcu_nocb_poll. 268d01f8620SPaul E. McKenney * "FirstBQ": New CB to empty ->nocb_bypass (->cblist maybe non-empty). 269d01f8620SPaul E. McKenney * "FirstBQnoWake": FirstBQ plus rcuo kthread need not be awakened. 270d01f8620SPaul E. McKenney * "FirstBQwake": FirstBQ plus rcuo kthread must be awakened. 271d01f8620SPaul E. McKenney * "FirstQ": New CB to empty ->cblist (->nocb_bypass maybe non-empty). 272d01f8620SPaul E. McKenney * "NeedWaitGP": rcuo GP kthread must wait on a grace period. 27369a79bb1SPaul E. McKenney * "Poll": Start of new polling cycle for rcu_nocb_poll. 274f7c9a9b6SPaul E. McKenney * "Sleep": Sleep waiting for GP for !rcu_nocb_poll. 275d01f8620SPaul E. McKenney * "Timer": Deferred-wake timer expired. 276d01f8620SPaul E. McKenney * "WakeEmptyIsDeferred": Wake rcuo kthread later, first CB to empty list. 277d01f8620SPaul E. McKenney * "WakeEmpty": Wake rcuo kthread, first CB to empty list. 278d01f8620SPaul E. McKenney * "WakeNot": Don't wake rcuo kthread. 279d01f8620SPaul E. McKenney * "WakeNotPoll": Don't wake rcuo kthread because it is polling. 280d01f8620SPaul E. McKenney * "WakeOvfIsDeferred": Wake rcuo kthread later, CB list is huge. 281d01f8620SPaul E. McKenney * "WokeEmpty": rcuo CB kthread woke to find empty list. 2829261dd0dSPaul E. McKenney */ 2834f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_nocb_wake, 2849261dd0dSPaul E. McKenney 2859261dd0dSPaul E. McKenney TP_PROTO(const char *rcuname, int cpu, const char *reason), 2869261dd0dSPaul E. McKenney 2879261dd0dSPaul E. McKenney TP_ARGS(rcuname, cpu, reason), 2889261dd0dSPaul E. McKenney 2899261dd0dSPaul E. McKenney TP_STRUCT__entry( 2909261dd0dSPaul E. McKenney __field(const char *, rcuname) 2919261dd0dSPaul E. McKenney __field(int, cpu) 2929261dd0dSPaul E. McKenney __field(const char *, reason) 2939261dd0dSPaul E. McKenney ), 2949261dd0dSPaul E. McKenney 2959261dd0dSPaul E. McKenney TP_fast_assign( 2969261dd0dSPaul E. McKenney __entry->rcuname = rcuname; 2979261dd0dSPaul E. McKenney __entry->cpu = cpu; 2989261dd0dSPaul E. McKenney __entry->reason = reason; 2999261dd0dSPaul E. McKenney ), 3009261dd0dSPaul E. McKenney 3019261dd0dSPaul E. McKenney TP_printk("%s %d %s", __entry->rcuname, __entry->cpu, __entry->reason) 3029261dd0dSPaul E. McKenney ); 3039122caf9SSteven Rostedt (VMware) #endif 3049261dd0dSPaul E. McKenney 3059261dd0dSPaul E. McKenney /* 306d4c08f2aSPaul E. McKenney * Tracepoint for tasks blocking within preemptible-RCU read-side 307d4c08f2aSPaul E. McKenney * critical sections. Track the type of RCU (which one day might 308d4c08f2aSPaul E. McKenney * include SRCU), the grace-period number that the task is blocking 309d4c08f2aSPaul E. McKenney * (the current or the next), and the task's PID. 310d4c08f2aSPaul E. McKenney */ 3114f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_preempt_task, 312d4c08f2aSPaul E. McKenney 313598ce094SPaul E. McKenney TP_PROTO(const char *rcuname, int pid, unsigned long gp_seq), 314d4c08f2aSPaul E. McKenney 315598ce094SPaul E. McKenney TP_ARGS(rcuname, pid, gp_seq), 316d4c08f2aSPaul E. McKenney 317d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 318e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 319598ce094SPaul E. McKenney __field(unsigned long, gp_seq) 320d4c08f2aSPaul E. McKenney __field(int, pid) 321d4c08f2aSPaul E. McKenney ), 322d4c08f2aSPaul E. McKenney 323d4c08f2aSPaul E. McKenney TP_fast_assign( 324d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 325598ce094SPaul E. McKenney __entry->gp_seq = gp_seq; 326d4c08f2aSPaul E. McKenney __entry->pid = pid; 327d4c08f2aSPaul E. McKenney ), 328d4c08f2aSPaul E. McKenney 329d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d", 330598ce094SPaul E. McKenney __entry->rcuname, __entry->gp_seq, __entry->pid) 331d4c08f2aSPaul E. McKenney ); 332d4c08f2aSPaul E. McKenney 333d4c08f2aSPaul E. McKenney /* 334d4c08f2aSPaul E. McKenney * Tracepoint for tasks that blocked within a given preemptible-RCU 335d4c08f2aSPaul E. McKenney * read-side critical section exiting that critical section. Track the 336d4c08f2aSPaul E. McKenney * type of RCU (which one day might include SRCU) and the task's PID. 337d4c08f2aSPaul E. McKenney */ 3384f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_unlock_preempted_task, 339d4c08f2aSPaul E. McKenney 340865aa1e0SPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid), 341d4c08f2aSPaul E. McKenney 342865aa1e0SPaul E. McKenney TP_ARGS(rcuname, gp_seq, pid), 343d4c08f2aSPaul E. McKenney 344d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 345e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 346865aa1e0SPaul E. McKenney __field(unsigned long, gp_seq) 347d4c08f2aSPaul E. McKenney __field(int, pid) 348d4c08f2aSPaul E. McKenney ), 349d4c08f2aSPaul E. McKenney 350d4c08f2aSPaul E. McKenney TP_fast_assign( 351d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 352865aa1e0SPaul E. McKenney __entry->gp_seq = gp_seq; 353d4c08f2aSPaul E. McKenney __entry->pid = pid; 354d4c08f2aSPaul E. McKenney ), 355d4c08f2aSPaul E. McKenney 356865aa1e0SPaul E. McKenney TP_printk("%s %lu %d", __entry->rcuname, __entry->gp_seq, __entry->pid) 357d4c08f2aSPaul E. McKenney ); 358d4c08f2aSPaul E. McKenney 359d4c08f2aSPaul E. McKenney /* 360d4c08f2aSPaul E. McKenney * Tracepoint for quiescent-state-reporting events. These are 361d4c08f2aSPaul E. McKenney * distinguished by the type of RCU, the grace-period number, the 362d4c08f2aSPaul E. McKenney * mask of quiescent lower-level entities, the rcu_node structure level, 363d4c08f2aSPaul E. McKenney * the starting and ending CPU covered by the rcu_node structure, and 364d4c08f2aSPaul E. McKenney * whether there are any blocked tasks blocking the current grace period. 365d4c08f2aSPaul E. McKenney * All but the type of RCU are extracted from the rcu_node structure. 366d4c08f2aSPaul E. McKenney */ 3674f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_quiescent_state_report, 368d4c08f2aSPaul E. McKenney 369db023296SPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, 370d4c08f2aSPaul E. McKenney unsigned long mask, unsigned long qsmask, 371d4c08f2aSPaul E. McKenney u8 level, int grplo, int grphi, int gp_tasks), 372d4c08f2aSPaul E. McKenney 373db023296SPaul E. McKenney TP_ARGS(rcuname, gp_seq, mask, qsmask, level, grplo, grphi, gp_tasks), 374d4c08f2aSPaul E. McKenney 375d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 376e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 377db023296SPaul E. McKenney __field(unsigned long, gp_seq) 378d4c08f2aSPaul E. McKenney __field(unsigned long, mask) 379d4c08f2aSPaul E. McKenney __field(unsigned long, qsmask) 380d4c08f2aSPaul E. McKenney __field(u8, level) 381d4c08f2aSPaul E. McKenney __field(int, grplo) 382d4c08f2aSPaul E. McKenney __field(int, grphi) 383d4c08f2aSPaul E. McKenney __field(u8, gp_tasks) 384d4c08f2aSPaul E. McKenney ), 385d4c08f2aSPaul E. McKenney 386d4c08f2aSPaul E. McKenney TP_fast_assign( 387d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 388db023296SPaul E. McKenney __entry->gp_seq = gp_seq; 389d4c08f2aSPaul E. McKenney __entry->mask = mask; 390d4c08f2aSPaul E. McKenney __entry->qsmask = qsmask; 391d4c08f2aSPaul E. McKenney __entry->level = level; 392d4c08f2aSPaul E. McKenney __entry->grplo = grplo; 393d4c08f2aSPaul E. McKenney __entry->grphi = grphi; 394d4c08f2aSPaul E. McKenney __entry->gp_tasks = gp_tasks; 395d4c08f2aSPaul E. McKenney ), 396d4c08f2aSPaul E. McKenney 397d4c08f2aSPaul E. McKenney TP_printk("%s %lu %lx>%lx %u %d %d %u", 398db023296SPaul E. McKenney __entry->rcuname, __entry->gp_seq, 399d4c08f2aSPaul E. McKenney __entry->mask, __entry->qsmask, __entry->level, 400d4c08f2aSPaul E. McKenney __entry->grplo, __entry->grphi, __entry->gp_tasks) 401d4c08f2aSPaul E. McKenney ); 402d4c08f2aSPaul E. McKenney 403d4c08f2aSPaul E. McKenney /* 404d4c08f2aSPaul E. McKenney * Tracepoint for quiescent states detected by force_quiescent_state(). 405e05121baSPaul E. McKenney * These trace events include the type of RCU, the grace-period number 406e05121baSPaul E. McKenney * that was blocked by the CPU, the CPU itself, and the type of quiescent 4077e28c5afSPaul E. McKenney * state, which can be "dti" for dyntick-idle mode or "kick" when kicking 4087e28c5afSPaul E. McKenney * a CPU that has been in dyntick-idle mode for too long. 409d4c08f2aSPaul E. McKenney */ 4104f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_fqs, 411d4c08f2aSPaul E. McKenney 412fee5997cSPaul E. McKenney TP_PROTO(const char *rcuname, unsigned long gp_seq, int cpu, const char *qsevent), 413d4c08f2aSPaul E. McKenney 414fee5997cSPaul E. McKenney TP_ARGS(rcuname, gp_seq, cpu, qsevent), 415d4c08f2aSPaul E. McKenney 416d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 417e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 418fee5997cSPaul E. McKenney __field(unsigned long, gp_seq) 419d4c08f2aSPaul E. McKenney __field(int, cpu) 420e66c33d5SSteven Rostedt (Red Hat) __field(const char *, qsevent) 421d4c08f2aSPaul E. McKenney ), 422d4c08f2aSPaul E. McKenney 423d4c08f2aSPaul E. McKenney TP_fast_assign( 424d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 425fee5997cSPaul E. McKenney __entry->gp_seq = gp_seq; 426d4c08f2aSPaul E. McKenney __entry->cpu = cpu; 427d4c08f2aSPaul E. McKenney __entry->qsevent = qsevent; 428d4c08f2aSPaul E. McKenney ), 429d4c08f2aSPaul E. McKenney 430d4c08f2aSPaul E. McKenney TP_printk("%s %lu %d %s", 431fee5997cSPaul E. McKenney __entry->rcuname, __entry->gp_seq, 432d4c08f2aSPaul E. McKenney __entry->cpu, __entry->qsevent) 433d4c08f2aSPaul E. McKenney ); 434d4c08f2aSPaul E. McKenney 43528f6569aSPranith Kumar #endif /* #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) */ 436d4c08f2aSPaul E. McKenney 437d4c08f2aSPaul E. McKenney /* 438d4c08f2aSPaul E. McKenney * Tracepoint for dyntick-idle entry/exit events. These take a string 439bd2b879aSPaul E. McKenney * as argument: "Start" for entering dyntick-idle mode, "Startirq" for 440bd2b879aSPaul E. McKenney * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it 441bd2b879aSPaul E. McKenney * to irq/NMI, "--=" for events moving towards idle, and "++=" for events 442e68bbb26SPaul E. McKenney * moving away from idle. 443045fb931SPaul E. McKenney * 444045fb931SPaul E. McKenney * These events also take a pair of numbers, which indicate the nesting 445e68bbb26SPaul E. McKenney * depth before and after the event of interest, and a third number that is 446e68bbb26SPaul E. McKenney * the ->dynticks counter. Note that task-related and interrupt-related 447e68bbb26SPaul E. McKenney * events use two separate counters, and that the "++=" and "--=" events 448e68bbb26SPaul E. McKenney * for irq/NMI will change the counter by two, otherwise by one. 449d4c08f2aSPaul E. McKenney */ 4504f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_dyntick, 451d4c08f2aSPaul E. McKenney 4526cf539a8SMarco Elver TP_PROTO(const char *polarity, long oldnesting, long newnesting, int dynticks), 453d4c08f2aSPaul E. McKenney 454dec98900SPaul E. McKenney TP_ARGS(polarity, oldnesting, newnesting, dynticks), 455d4c08f2aSPaul E. McKenney 456d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 457e66c33d5SSteven Rostedt (Red Hat) __field(const char *, polarity) 45884585aa8SPaul E. McKenney __field(long, oldnesting) 45984585aa8SPaul E. McKenney __field(long, newnesting) 460dec98900SPaul E. McKenney __field(int, dynticks) 461d4c08f2aSPaul E. McKenney ), 462d4c08f2aSPaul E. McKenney 463d4c08f2aSPaul E. McKenney TP_fast_assign( 464d4c08f2aSPaul E. McKenney __entry->polarity = polarity; 4654145fa7fSPaul E. McKenney __entry->oldnesting = oldnesting; 4664145fa7fSPaul E. McKenney __entry->newnesting = newnesting; 4676cf539a8SMarco Elver __entry->dynticks = dynticks; 468d4c08f2aSPaul E. McKenney ), 469d4c08f2aSPaul E. McKenney 470dec98900SPaul E. McKenney TP_printk("%s %lx %lx %#3x", __entry->polarity, 471dec98900SPaul E. McKenney __entry->oldnesting, __entry->newnesting, 472dec98900SPaul E. McKenney __entry->dynticks & 0xfff) 473433cdddcSPaul E. McKenney ); 474433cdddcSPaul E. McKenney 475433cdddcSPaul E. McKenney /* 476d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback function. 477d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, the second argument is 478486e2593SPaul E. McKenney * a pointer to the RCU callback itself, the third element is the 479486e2593SPaul E. McKenney * number of lazy callbacks queued, and the fourth element is the 480486e2593SPaul E. McKenney * total number of callbacks queued. 481d4c08f2aSPaul E. McKenney */ 4824f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_callback, 483d4c08f2aSPaul E. McKenney 484e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy, 485486e2593SPaul E. McKenney long qlen), 486d4c08f2aSPaul E. McKenney 487486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, qlen_lazy, qlen), 488d4c08f2aSPaul E. McKenney 489d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 490e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 491d4c08f2aSPaul E. McKenney __field(void *, rhp) 492d4c08f2aSPaul E. McKenney __field(void *, func) 493486e2593SPaul E. McKenney __field(long, qlen_lazy) 494d4c08f2aSPaul E. McKenney __field(long, qlen) 495d4c08f2aSPaul E. McKenney ), 496d4c08f2aSPaul E. McKenney 497d4c08f2aSPaul E. McKenney TP_fast_assign( 498d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 499d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 500d4c08f2aSPaul E. McKenney __entry->func = rhp->func; 501486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 502d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 503d4c08f2aSPaul E. McKenney ), 504d4c08f2aSPaul E. McKenney 505d75f773cSSakari Ailus TP_printk("%s rhp=%p func=%ps %ld/%ld", 506486e2593SPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func, 507486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 508d4c08f2aSPaul E. McKenney ); 509d4c08f2aSPaul E. McKenney 510d4c08f2aSPaul E. McKenney /* 511d4c08f2aSPaul E. McKenney * Tracepoint for the registration of a single RCU callback of the special 512d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU type, the second argument 513d4c08f2aSPaul E. McKenney * is a pointer to the RCU callback, the third argument is the offset 514d4c08f2aSPaul E. McKenney * of the callback within the enclosing RCU-protected data structure, 515486e2593SPaul E. McKenney * the fourth argument is the number of lazy callbacks queued, and the 516486e2593SPaul E. McKenney * fifth argument is the total number of callbacks queued. 517d4c08f2aSPaul E. McKenney */ 5184f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_kfree_callback, 519d4c08f2aSPaul E. McKenney 520e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, 521486e2593SPaul E. McKenney long qlen_lazy, long qlen), 522d4c08f2aSPaul E. McKenney 523486e2593SPaul E. McKenney TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen), 524d4c08f2aSPaul E. McKenney 525d4c08f2aSPaul E. McKenney TP_STRUCT__entry( 526e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 527d4c08f2aSPaul E. McKenney __field(void *, rhp) 528d4c08f2aSPaul E. McKenney __field(unsigned long, offset) 529486e2593SPaul E. McKenney __field(long, qlen_lazy) 530d4c08f2aSPaul E. McKenney __field(long, qlen) 531d4c08f2aSPaul E. McKenney ), 532d4c08f2aSPaul E. McKenney 533d4c08f2aSPaul E. McKenney TP_fast_assign( 534d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 535d4c08f2aSPaul E. McKenney __entry->rhp = rhp; 536d4c08f2aSPaul E. McKenney __entry->offset = offset; 537486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 538d4c08f2aSPaul E. McKenney __entry->qlen = qlen; 539d4c08f2aSPaul E. McKenney ), 540d4c08f2aSPaul E. McKenney 541486e2593SPaul E. McKenney TP_printk("%s rhp=%p func=%ld %ld/%ld", 542d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset, 543486e2593SPaul E. McKenney __entry->qlen_lazy, __entry->qlen) 544d4c08f2aSPaul E. McKenney ); 545d4c08f2aSPaul E. McKenney 546300df91cSPaul E. McKenney /* 547300df91cSPaul E. McKenney * Tracepoint for marking the beginning rcu_do_batch, performed to start 54872fe701bSPaul E. McKenney * RCU callback invocation. The first argument is the RCU flavor, 549486e2593SPaul E. McKenney * the second is the number of lazy callbacks queued, the third is 550486e2593SPaul E. McKenney * the total number of callbacks queued, and the fourth argument is 551486e2593SPaul E. McKenney * the current RCU-callback batch limit. 55229c00b4aSPaul E. McKenney */ 5534f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_batch_start, 55429c00b4aSPaul E. McKenney 555e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit), 55629c00b4aSPaul E. McKenney 557486e2593SPaul E. McKenney TP_ARGS(rcuname, qlen_lazy, qlen, blimit), 55829c00b4aSPaul E. McKenney 55929c00b4aSPaul E. McKenney TP_STRUCT__entry( 560e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 561486e2593SPaul E. McKenney __field(long, qlen_lazy) 562300df91cSPaul E. McKenney __field(long, qlen) 5633aac7a8dSPaul E. McKenney __field(long, blimit) 56429c00b4aSPaul E. McKenney ), 56529c00b4aSPaul E. McKenney 56629c00b4aSPaul E. McKenney TP_fast_assign( 56772fe701bSPaul E. McKenney __entry->rcuname = rcuname; 568486e2593SPaul E. McKenney __entry->qlen_lazy = qlen_lazy; 569300df91cSPaul E. McKenney __entry->qlen = qlen; 57029c00b4aSPaul E. McKenney __entry->blimit = blimit; 57129c00b4aSPaul E. McKenney ), 57229c00b4aSPaul E. McKenney 5733aac7a8dSPaul E. McKenney TP_printk("%s CBs=%ld/%ld bl=%ld", 574486e2593SPaul E. McKenney __entry->rcuname, __entry->qlen_lazy, __entry->qlen, 575486e2593SPaul E. McKenney __entry->blimit) 57629c00b4aSPaul E. McKenney ); 57729c00b4aSPaul E. McKenney 57829c00b4aSPaul E. McKenney /* 579300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback function. 580d4c08f2aSPaul E. McKenney * The first argument is the type of RCU, and the second argument is 581d4c08f2aSPaul E. McKenney * a pointer to the RCU callback itself. 58229c00b4aSPaul E. McKenney */ 5834f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_invoke_callback, 58429c00b4aSPaul E. McKenney 585e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp), 58629c00b4aSPaul E. McKenney 587d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp), 58829c00b4aSPaul E. McKenney 58929c00b4aSPaul E. McKenney TP_STRUCT__entry( 590e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 59129c00b4aSPaul E. McKenney __field(void *, rhp) 59229c00b4aSPaul E. McKenney __field(void *, func) 59329c00b4aSPaul E. McKenney ), 59429c00b4aSPaul E. McKenney 59529c00b4aSPaul E. McKenney TP_fast_assign( 596d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 59729c00b4aSPaul E. McKenney __entry->rhp = rhp; 59829c00b4aSPaul E. McKenney __entry->func = rhp->func; 59929c00b4aSPaul E. McKenney ), 60029c00b4aSPaul E. McKenney 601d75f773cSSakari Ailus TP_printk("%s rhp=%p func=%ps", 602d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->func) 60329c00b4aSPaul E. McKenney ); 60429c00b4aSPaul E. McKenney 60529c00b4aSPaul E. McKenney /* 606300df91cSPaul E. McKenney * Tracepoint for the invocation of a single RCU callback of the special 607d4c08f2aSPaul E. McKenney * kfree() form. The first argument is the RCU flavor, the second 608d4c08f2aSPaul E. McKenney * argument is a pointer to the RCU callback, and the third argument 609d4c08f2aSPaul E. McKenney * is the offset of the callback within the enclosing RCU-protected 610d4c08f2aSPaul E. McKenney * data structure. 61129c00b4aSPaul E. McKenney */ 6124f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_invoke_kfree_callback, 61329c00b4aSPaul E. McKenney 614e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), 61529c00b4aSPaul E. McKenney 616d4c08f2aSPaul E. McKenney TP_ARGS(rcuname, rhp, offset), 61729c00b4aSPaul E. McKenney 61829c00b4aSPaul E. McKenney TP_STRUCT__entry( 619e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 62029c00b4aSPaul E. McKenney __field(void *, rhp) 62129c00b4aSPaul E. McKenney __field(unsigned long, offset) 62229c00b4aSPaul E. McKenney ), 62329c00b4aSPaul E. McKenney 62429c00b4aSPaul E. McKenney TP_fast_assign( 625d4c08f2aSPaul E. McKenney __entry->rcuname = rcuname; 62629c00b4aSPaul E. McKenney __entry->rhp = rhp; 62729c00b4aSPaul E. McKenney __entry->offset = offset; 62829c00b4aSPaul E. McKenney ), 62929c00b4aSPaul E. McKenney 630d4c08f2aSPaul E. McKenney TP_printk("%s rhp=%p func=%ld", 631d4c08f2aSPaul E. McKenney __entry->rcuname, __entry->rhp, __entry->offset) 63229c00b4aSPaul E. McKenney ); 63329c00b4aSPaul E. McKenney 63429c00b4aSPaul E. McKenney /* 635300df91cSPaul E. McKenney * Tracepoint for exiting rcu_do_batch after RCU callbacks have been 6364968c300SPaul E. McKenney * invoked. The first argument is the name of the RCU flavor, 6374968c300SPaul E. McKenney * the second argument is number of callbacks actually invoked, 6384968c300SPaul E. McKenney * the third argument (cb) is whether or not any of the callbacks that 6394968c300SPaul E. McKenney * were ready to invoke at the beginning of this batch are still 6404968c300SPaul E. McKenney * queued, the fourth argument (nr) is the return value of need_resched(), 6414968c300SPaul E. McKenney * the fifth argument (iit) is 1 if the current task is the idle task, 6424968c300SPaul E. McKenney * and the sixth argument (risk) is the return value from 6434968c300SPaul E. McKenney * rcu_is_callbacks_kthread(). 64429c00b4aSPaul E. McKenney */ 6454f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_batch_end, 64629c00b4aSPaul E. McKenney 647e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, int callbacks_invoked, 64815f5191bSPaul E. McKenney char cb, char nr, char iit, char risk), 64929c00b4aSPaul E. McKenney 6504968c300SPaul E. McKenney TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk), 65129c00b4aSPaul E. McKenney 65229c00b4aSPaul E. McKenney TP_STRUCT__entry( 653e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 65429c00b4aSPaul E. McKenney __field(int, callbacks_invoked) 65515f5191bSPaul E. McKenney __field(char, cb) 65615f5191bSPaul E. McKenney __field(char, nr) 65715f5191bSPaul E. McKenney __field(char, iit) 65815f5191bSPaul E. McKenney __field(char, risk) 65929c00b4aSPaul E. McKenney ), 66029c00b4aSPaul E. McKenney 66129c00b4aSPaul E. McKenney TP_fast_assign( 66272fe701bSPaul E. McKenney __entry->rcuname = rcuname; 66329c00b4aSPaul E. McKenney __entry->callbacks_invoked = callbacks_invoked; 6644968c300SPaul E. McKenney __entry->cb = cb; 6654968c300SPaul E. McKenney __entry->nr = nr; 6664968c300SPaul E. McKenney __entry->iit = iit; 6674968c300SPaul E. McKenney __entry->risk = risk; 66829c00b4aSPaul E. McKenney ), 66929c00b4aSPaul E. McKenney 6704968c300SPaul E. McKenney TP_printk("%s CBs-invoked=%d idle=%c%c%c%c", 6714968c300SPaul E. McKenney __entry->rcuname, __entry->callbacks_invoked, 6724968c300SPaul E. McKenney __entry->cb ? 'C' : '.', 6734968c300SPaul E. McKenney __entry->nr ? 'S' : '.', 6744968c300SPaul E. McKenney __entry->iit ? 'I' : '.', 6754968c300SPaul E. McKenney __entry->risk ? 'R' : '.') 67629c00b4aSPaul E. McKenney ); 67729c00b4aSPaul E. McKenney 67891afaf30SPaul E. McKenney /* 67991afaf30SPaul E. McKenney * Tracepoint for rcutorture readers. The first argument is the name 68091afaf30SPaul E. McKenney * of the RCU flavor from rcutorture's viewpoint and the second argument 681d0af39e8SPaul E. McKenney * is the callback address. The third argument is the start time in 682d0af39e8SPaul E. McKenney * seconds, and the last two arguments are the grace period numbers 683d0af39e8SPaul E. McKenney * at the beginning and end of the read, respectively. Note that the 684d0af39e8SPaul E. McKenney * callback address can be NULL. 68591afaf30SPaul E. McKenney */ 686b3c98314SPaul E. McKenney #define RCUTORTURENAME_LEN 8 6874f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_torture_read, 68891afaf30SPaul E. McKenney 689e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcutorturename, struct rcu_head *rhp, 69052494535SPaul E. McKenney unsigned long secs, unsigned long c_old, unsigned long c), 69191afaf30SPaul E. McKenney 69252494535SPaul E. McKenney TP_ARGS(rcutorturename, rhp, secs, c_old, c), 69391afaf30SPaul E. McKenney 69491afaf30SPaul E. McKenney TP_STRUCT__entry( 695b3c98314SPaul E. McKenney __field(char, rcutorturename[RCUTORTURENAME_LEN]) 69691afaf30SPaul E. McKenney __field(struct rcu_head *, rhp) 69752494535SPaul E. McKenney __field(unsigned long, secs) 69852494535SPaul E. McKenney __field(unsigned long, c_old) 69952494535SPaul E. McKenney __field(unsigned long, c) 70091afaf30SPaul E. McKenney ), 70191afaf30SPaul E. McKenney 70291afaf30SPaul E. McKenney TP_fast_assign( 703b3c98314SPaul E. McKenney strncpy(__entry->rcutorturename, rcutorturename, 704b3c98314SPaul E. McKenney RCUTORTURENAME_LEN); 705b3c98314SPaul E. McKenney __entry->rcutorturename[RCUTORTURENAME_LEN - 1] = 0; 70691afaf30SPaul E. McKenney __entry->rhp = rhp; 70752494535SPaul E. McKenney __entry->secs = secs; 70852494535SPaul E. McKenney __entry->c_old = c_old; 70952494535SPaul E. McKenney __entry->c = c; 71091afaf30SPaul E. McKenney ), 71191afaf30SPaul E. McKenney 71252494535SPaul E. McKenney TP_printk("%s torture read %p %luus c: %lu %lu", 71352494535SPaul E. McKenney __entry->rcutorturename, __entry->rhp, 71452494535SPaul E. McKenney __entry->secs, __entry->c_old, __entry->c) 71591afaf30SPaul E. McKenney ); 71691afaf30SPaul E. McKenney 717a83eff0aSPaul E. McKenney /* 718dd46a788SPaul E. McKenney * Tracepoint for rcu_barrier() execution. The string "s" describes 719dd46a788SPaul E. McKenney * the rcu_barrier phase: 720dd46a788SPaul E. McKenney * "Begin": rcu_barrier() started. 721dd46a788SPaul E. McKenney * "EarlyExit": rcu_barrier() piggybacked, thus early exit. 722dd46a788SPaul E. McKenney * "Inc1": rcu_barrier() piggyback check counter incremented. 723dd46a788SPaul E. McKenney * "OnlineQ": rcu_barrier() found online CPU with callbacks. 724dd46a788SPaul E. McKenney * "OnlineNQ": rcu_barrier() found online CPU, no callbacks. 725a83eff0aSPaul E. McKenney * "IRQ": An rcu_barrier_callback() callback posted on remote CPU. 726f92c734fSPaul E. McKenney * "IRQNQ": An rcu_barrier_callback() callback found no callbacks. 727a83eff0aSPaul E. McKenney * "CB": An rcu_barrier_callback() invoked a callback, not the last. 728a83eff0aSPaul E. McKenney * "LastCB": An rcu_barrier_callback() invoked the last callback. 729dd46a788SPaul E. McKenney * "Inc2": rcu_barrier() piggyback check counter incremented. 730a83eff0aSPaul E. McKenney * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument 731a83eff0aSPaul E. McKenney * is the count of remaining callbacks, and "done" is the piggybacking count. 732a83eff0aSPaul E. McKenney */ 7334f5fbd78SYafang Shao TRACE_EVENT_RCU(rcu_barrier, 734a83eff0aSPaul E. McKenney 735e66c33d5SSteven Rostedt (Red Hat) TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done), 736a83eff0aSPaul E. McKenney 737a83eff0aSPaul E. McKenney TP_ARGS(rcuname, s, cpu, cnt, done), 738a83eff0aSPaul E. McKenney 739a83eff0aSPaul E. McKenney TP_STRUCT__entry( 740e66c33d5SSteven Rostedt (Red Hat) __field(const char *, rcuname) 741e66c33d5SSteven Rostedt (Red Hat) __field(const char *, s) 742a83eff0aSPaul E. McKenney __field(int, cpu) 743a83eff0aSPaul E. McKenney __field(int, cnt) 744a83eff0aSPaul E. McKenney __field(unsigned long, done) 745a83eff0aSPaul E. McKenney ), 746a83eff0aSPaul E. McKenney 747a83eff0aSPaul E. McKenney TP_fast_assign( 748a83eff0aSPaul E. McKenney __entry->rcuname = rcuname; 749a83eff0aSPaul E. McKenney __entry->s = s; 750a83eff0aSPaul E. McKenney __entry->cpu = cpu; 751a83eff0aSPaul E. McKenney __entry->cnt = cnt; 752a83eff0aSPaul E. McKenney __entry->done = done; 753a83eff0aSPaul E. McKenney ), 754a83eff0aSPaul E. McKenney 755a83eff0aSPaul E. McKenney TP_printk("%s %s cpu %d remaining %d # %lu", 756a83eff0aSPaul E. McKenney __entry->rcuname, __entry->s, __entry->cpu, __entry->cnt, 757a83eff0aSPaul E. McKenney __entry->done) 758a83eff0aSPaul E. McKenney ); 759a83eff0aSPaul E. McKenney 76029c00b4aSPaul E. McKenney #endif /* _TRACE_RCU_H */ 76129c00b4aSPaul E. McKenney 76229c00b4aSPaul E. McKenney /* This part must be outside protection */ 76329c00b4aSPaul E. McKenney #include <trace/define_trace.h> 764