--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-only */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM rcu
+
+#if !defined(LTTNG_TRACE_RCU_H) || defined(TRACE_HEADER_MULTI_READ)
+#define LTTNG_TRACE_RCU_H
+
+#include <lttng/tracepoint-event.h>
+#include <linux/version.h>
+
+/*
+ * Tracepoint for start/end markers used for utilization calculations.
+ * By convention, the string is of the following forms:
+ *
+ * "Start <activity>" -- Mark the start of the specified activity,
+ * such as "context switch". Nesting is permitted.
+ * "End <activity>" -- Mark the end of the specified activity.
+ *
+ * An "@" character within "<activity>" is a comment character: Data
+ * reduction scripts will ignore the "@" and the remainder of the line.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_utilization,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *s),
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+ TP_PROTO(char *s),
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+ TP_ARGS(s),
+
+ TP_FIELDS(
+ ctf_string(s, s)
+ )
+)
+
+#ifdef CONFIG_RCU_TRACE
+
+#if defined(CONFIG_TREE_RCU) \
+ || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0) \
+ && defined(CONFIG_PREEMPT_RCU)) \
+ || defined(CONFIG_TREE_PREEMPT_RCU)
+
+/*
+ * Tracepoint for grace-period events: starting and ending a grace
+ * period ("start" and "end", respectively), a CPU noting the start
+ * of a new grace period or the end of an old grace period ("cpustart"
+ * and "cpuend", respectively), a CPU passing through a quiescent
+ * state ("cpuqs"), a CPU coming online or going offline ("cpuonl"
+ * and "cpuofl", respectively), and a CPU being kicked for being too
+ * long in dyntick-idle mode ("kick").
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
+
+ TP_PROTO(const char *rcuname, unsigned long gp_seq, const char *gpevent),
+
+ TP_ARGS(rcuname, gp_seq, gpevent),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_string(gpevent, gpevent)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
+
+ TP_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent),
+
+ TP_ARGS(rcuname, gpnum, gpevent),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_string(gpevent, gpevent)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
+
+ TP_PROTO(char *rcuname, unsigned long gpnum, char *gpevent),
+
+ TP_ARGS(rcuname, gpnum, gpevent),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_string(gpevent, gpevent)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for grace-period-initialization events. These are
+ * distinguished by the type of RCU, the new grace-period number, the
+ * rcu_node structure level, the starting and ending CPU covered by the
+ * rcu_node structure, and the mask of CPUs that will be waited for.
+ * All but the type of RCU are extracted from the rcu_node structure.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
+
+ TP_PROTO(const char *rcuname, unsigned long gp_seq, u8 level,
+ int grplo, int grphi, unsigned long qsmask),
+
+ TP_ARGS(rcuname, gp_seq, level, grplo, grphi, qsmask),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
+
+ TP_PROTO(const char *rcuname, unsigned long gpnum, u8 level,
+ int grplo, int grphi, unsigned long qsmask),
+
+ TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
+
+ TP_PROTO(char *rcuname, unsigned long gpnum, u8 level,
+ int grplo, int grphi, unsigned long qsmask),
+
+ TP_ARGS(rcuname, gpnum, level, grplo, grphi, qsmask),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for tasks blocking within preemptible-RCU read-side
+ * critical sections. Track the type of RCU (which one day might
+ * include SRCU), the grace-period number that the task is blocking
+ * (the current or the next), and the task's PID.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
+
+ TP_PROTO(const char *rcuname, int pid, unsigned long gp_seq),
+
+ TP_ARGS(rcuname, pid, gp_seq),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_integer(int, pid, pid)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
+
+ TP_PROTO(const char *rcuname, int pid, unsigned long gpnum),
+
+ TP_ARGS(rcuname, pid, gpnum),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, pid, pid)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
+
+ TP_PROTO(char *rcuname, int pid, unsigned long gpnum),
+
+ TP_ARGS(rcuname, pid, gpnum),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, pid, pid)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for tasks that blocked within a given preemptible-RCU
+ * read-side critical section exiting that critical section. Track the
+ * type of RCU (which one day might include SRCU) and the task's PID.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
+
+ TP_PROTO(const char *rcuname, unsigned long gp_seq, int pid),
+
+ TP_ARGS(rcuname, gp_seq, pid),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_integer(int, pid, pid)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
+
+ TP_PROTO(const char *rcuname, unsigned long gpnum, int pid),
+
+ TP_ARGS(rcuname, gpnum, pid),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, pid, pid)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
+
+ TP_PROTO(char *rcuname, unsigned long gpnum, int pid),
+
+ TP_ARGS(rcuname, gpnum, pid),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, pid, pid)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for quiescent-state-reporting events. These are
+ * distinguished by the type of RCU, the grace-period number, the
+ * mask of quiescent lower-level entities, the rcu_node structure level,
+ * the starting and ending CPU covered by the rcu_node structure, and
+ * whether there are any blocked tasks blocking the current grace period.
+ * All but the type of RCU are extracted from the rcu_node structure.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
+
+ TP_PROTO(const char *rcuname, unsigned long gp_seq,
+ unsigned long mask, unsigned long qsmask,
+ u8 level, int grplo, int grphi, int gp_tasks),
+
+ TP_ARGS(rcuname, gp_seq, mask, qsmask, level, grplo, grphi, gp_tasks),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_integer(unsigned long, mask, mask)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(u8, gp_tasks, gp_tasks)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
+
+ TP_PROTO(const char *rcuname, unsigned long gpnum,
+ unsigned long mask, unsigned long qsmask,
+ u8 level, int grplo, int grphi, int gp_tasks),
+
+ TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(unsigned long, mask, mask)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(u8, gp_tasks, gp_tasks)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
+
+ TP_PROTO(char *rcuname, unsigned long gpnum,
+ unsigned long mask, unsigned long qsmask,
+ u8 level, int grplo, int grphi, int gp_tasks),
+
+ TP_ARGS(rcuname, gpnum, mask, qsmask, level, grplo, grphi, gp_tasks),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(unsigned long, mask, mask)
+ ctf_integer(unsigned long, qsmask, qsmask)
+ ctf_integer(u8, level, level)
+ ctf_integer(int, grplo, grplo)
+ ctf_integer(int, grphi, grphi)
+ ctf_integer(u8, gp_tasks, gp_tasks)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for quiescent states detected by force_quiescent_state().
+ * These trace events include the type of RCU, the grace-period number
+ * that was blocked by the CPU, the CPU itself, and the type of quiescent
+ * state, which can be "dti" for dyntick-idle mode, "ofl" for CPU offline,
+ * or "kick" when kicking a CPU that has been in dyntick-idle mode for
+ * too long.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+LTTNG_TRACEPOINT_EVENT(rcu_fqs,
+
+ TP_PROTO(const char *rcuname, unsigned long gp_seq, int cpu, const char *qsevent),
+
+ TP_ARGS(rcuname, gp_seq, cpu, qsevent),
+
+ TP_FIELDS(
+ ctf_integer(unsigned long, gp_seq, gp_seq)
+ ctf_integer(int, cpu, cpu)
+ ctf_string(rcuname, rcuname)
+ ctf_string(qsevent, qsevent)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_fqs,
+
+ TP_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent),
+
+ TP_ARGS(rcuname, gpnum, cpu, qsevent),
+
+ TP_FIELDS(
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, cpu, cpu)
+ ctf_string(rcuname, rcuname)
+ ctf_string(qsevent, qsevent)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_fqs,
+
+ TP_PROTO(char *rcuname, unsigned long gpnum, int cpu, char *qsevent),
+
+ TP_ARGS(rcuname, gpnum, cpu, qsevent),
+
+ TP_FIELDS(
+ ctf_integer(unsigned long, gpnum, gpnum)
+ ctf_integer(int, cpu, cpu)
+ ctf_string(rcuname, rcuname)
+ ctf_string(qsevent, qsevent)
+ )
+)
+#endif
+
+#endif /*
+ * #if defined(CONFIG_TREE_RCU)
+ * || (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)
+ * && defined(CONFIG_PREEMPT_RCU))
+ * || defined(CONFIG_TREE_PREEMPT_RCU)
+ */
+
+/*
+ * Tracepoint for dyntick-idle entry/exit events. These take a string
+ * as argument: "Start" for entering dyntick-idle mode, "End" for
+ * leaving it, "--=" for events moving towards idle, and "++=" for events
+ * moving away from idle. "Error on entry: not idle task" and "Error on
+ * exit: not idle task" indicate that a non-idle task is erroneously
+ * toying with the idle loop.
+ *
+ * These events also take a pair of numbers, which indicate the nesting
+ * depth before and after the event of interest. Note that task-related
+ * events use the upper bits of each number, while interrupt-related
+ * events use the lower bits.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) \
+ || LTTNG_KERNEL_RANGE(5,5,6, 5,6,0) \
+ || LTTNG_KERNEL_RANGE(5,4,22, 5,5,0)
+LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
+
+ TP_PROTO(const char *polarity, long oldnesting, long newnesting, int dynticks),
+
+ TP_ARGS(polarity, oldnesting, newnesting, dynticks),
+
+ TP_FIELDS(
+ ctf_string(polarity, polarity)
+ ctf_integer(long, oldnesting, oldnesting)
+ ctf_integer(long, newnesting, newnesting)
+ ctf_integer(int, dynticks, dynticks)
+ )
+)
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0))
+LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
+
+ TP_PROTO(const char *polarity, long oldnesting, long newnesting, atomic_t dynticks),
+
+ TP_ARGS(polarity, oldnesting, newnesting, dynticks),
+
+ TP_FIELDS(
+ ctf_string(polarity, polarity)
+ ctf_integer(long, oldnesting, oldnesting)
+ ctf_integer(long, newnesting, newnesting)
+ ctf_integer(int, dynticks, atomic_read(&dynticks))
+ )
+)
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
+
+ TP_PROTO(const char *polarity, long long oldnesting, long long newnesting),
+
+ TP_ARGS(polarity, oldnesting, newnesting),
+
+ TP_FIELDS(
+ ctf_string(polarity, polarity)
+ ctf_integer(long long, oldnesting, oldnesting)
+ ctf_integer(long long, newnesting, newnesting)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
+
+ TP_PROTO(char *polarity, long long oldnesting, long long newnesting),
+
+ TP_ARGS(polarity, oldnesting, newnesting),
+
+ TP_FIELDS(
+ ctf_string(polarity, polarity)
+ ctf_integer(long long, oldnesting, oldnesting)
+ ctf_integer(long long, newnesting, newnesting)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
+
+ TP_PROTO(char *polarity),
+
+ TP_ARGS(polarity),
+
+ TP_FIELDS(
+ ctf_string(polarity, polarity)
+ )
+)
+#endif
+
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+/*
+ * Tracepoint for RCU preparation for idle, the goal being to get RCU
+ * processing done so that the current CPU can shut off its scheduling
+ * clock and enter dyntick-idle mode. One way to accomplish this is
+ * to drain all RCU callbacks from this CPU, and the other is to have
+ * done everything RCU requires for the current grace period. In this
+ * latter case, the CPU will be awakened at the end of the current grace
+ * period in order to process the remainder of its callbacks.
+ *
+ * These tracepoints take a string as argument:
+ *
+ * "No callbacks": Nothing to do, no callbacks on this CPU.
+ * "In holdoff": Nothing to do, holding off after unsuccessful attempt.
+ * "Begin holdoff": Attempt failed, don't retry until next jiffy.
+ * "Dyntick with callbacks": Entering dyntick-idle despite callbacks.
+ * "Dyntick with lazy callbacks": Entering dyntick-idle w/lazy callbacks.
+ * "More callbacks": Still more callbacks, try again to clear them out.
+ * "Callbacks drained": All callbacks processed, off to dyntick idle!
+ * "Timer": Timer fired to cause CPU to continue processing callbacks.
+ * "Demigrate": Timer fired on wrong CPU, woke up correct CPU.
+ * "Cleanup after idle": Idle exited, timer canceled.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_prep_idle,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *reason),
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+ TP_PROTO(char *reason),
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+ TP_ARGS(reason),
+
+ TP_FIELDS(
+ ctf_string(reason, reason)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for the registration of a single RCU callback function.
+ * The first argument is the type of RCU, the second argument is
+ * a pointer to the RCU callback itself, the third element is the
+ * number of lazy callbacks queued, and the fourth element is the
+ * total number of callbacks queued.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+LTTNG_TRACEPOINT_EVENT(rcu_callback,
+
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen),
+
+ TP_ARGS(rcuname, rhp, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(void *, func, rhp->func)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_callback,
+
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
+ long qlen),
+
+ TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(void *, func, rhp->func)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+LTTNG_TRACEPOINT_EVENT(rcu_callback,
+
+ TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen_lazy,
+ long qlen),
+
+ TP_ARGS(rcuname, rhp, qlen_lazy, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(void *, func, rhp->func)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_callback,
+
+ TP_PROTO(char *rcuname, struct rcu_head *rhp, long qlen),
+
+ TP_ARGS(rcuname, rhp, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(void *, func, rhp->func)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#endif
+
+
+/*
+ * Tracepoint for the registration of a single RCU callback of the special
+ * kfree() form. The first argument is the RCU type, the second argument
+ * is a pointer to the RCU callback, the third argument is the offset
+ * of the callback within the enclosing RCU-protected data structure,
+ * the fourth argument is the number of lazy callbacks queued, and the
+ * fifth argument is the total number of callbacks queued.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
+
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
+ long qlen),
+
+ TP_ARGS(rcuname, rhp, offset, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(unsigned long, offset, offset)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
+
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
+ long qlen_lazy, long qlen),
+
+ TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(unsigned long, offset, offset)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
+
+ TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
+ long qlen_lazy, long qlen),
+
+ TP_ARGS(rcuname, rhp, offset, qlen_lazy, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(unsigned long, offset, offset)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
+
+ TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset,
+ long qlen),
+
+ TP_ARGS(rcuname, rhp, offset, qlen),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(unsigned long, offset, offset)
+ ctf_integer(long, qlen, qlen)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for marking the beginning rcu_do_batch, performed to start
+ * RCU callback invocation. The first argument is the RCU flavor,
+ * the second is the number of lazy callbacks queued, the third is
+ * the total number of callbacks queued, and the fourth argument is
+ * the current RCU-callback batch limit.
+ */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
+
+ TP_PROTO(const char *rcuname, long qlen, long blimit),
+
+ TP_ARGS(rcuname, qlen, blimit),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(long, qlen, qlen)
+ ctf_integer(long, blimit, blimit)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
+
+ TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
+
+ TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ ctf_integer(long, blimit, blimit)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
+
+ TP_PROTO(char *rcuname, long qlen_lazy, long qlen, long blimit),
+
+ TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ ctf_integer(long, blimit, blimit)
+ )
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
+
+ TP_PROTO(char *rcuname, long qlen_lazy, long qlen, int blimit),
+
+ TP_ARGS(rcuname, qlen_lazy, qlen, blimit),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(long, qlen_lazy, qlen_lazy)
+ ctf_integer(long, qlen, qlen)
+ ctf_integer(int, blimit, blimit)
+ )
+)
+#else
+LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
+
+ TP_PROTO(char *rcuname, long qlen, int blimit),
+
+ TP_ARGS(rcuname, qlen, blimit),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(long, qlen, qlen)
+ ctf_integer(int, blimit, blimit)
+ )
+)
+#endif
+
+/*
+ * Tracepoint for the invocation of a single RCU callback function.
+ * The first argument is the type of RCU, and the second argument is
+ * a pointer to the RCU callback itself.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_invoke_callback,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp),
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+ TP_PROTO(char *rcuname, struct rcu_head *rhp),
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+ TP_ARGS(rcuname, rhp),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer_hex(void *, func, rhp->func)
+ )
+)
+
+/*
+ * Tracepoint for the invocation of a single RCU callback of the special
+ * kfree() form. The first argument is the RCU flavor, the second
+ * argument is a pointer to the RCU callback, and the third argument
+ * is the offset of the callback within the enclosing RCU-protected
+ * data structure.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_invoke_kfree_callback,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+ TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset),
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+ TP_ARGS(rcuname, rhp, offset),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer_hex(void *, rhp, rhp)
+ ctf_integer(unsigned long, offset, offset)
+ )
+)
+
+/*
+ * Tracepoint for exiting rcu_do_batch after RCU callbacks have been
+ * invoked. The first argument is the name of the RCU flavor,
+ * the second argument is number of callbacks actually invoked,
+ * the third argument (cb) is whether or not any of the callbacks that
+ * were ready to invoke at the beginning of this batch are still
+ * queued, the fourth argument (nr) is the return value of need_resched(),
+ * the fifth argument (iit) is 1 if the current task is the idle task,
+ * and the sixth argument (risk) is the return value from
+ * rcu_is_callbacks_kthread().
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_batch_end,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
+ TP_PROTO(const char *rcuname, int callbacks_invoked,
+ char cb, char nr, char iit, char risk),
+
+ TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *rcuname, int callbacks_invoked,
+ bool cb, bool nr, bool iit, bool risk),
+
+ TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+ TP_PROTO(char *rcuname, int callbacks_invoked,
+ bool cb, bool nr, bool iit, bool risk),
+
+ TP_ARGS(rcuname, callbacks_invoked, cb, nr, iit, risk),
+#else
+ TP_PROTO(char *rcuname, int callbacks_invoked),
+
+ TP_ARGS(rcuname, callbacks_invoked),
+#endif
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_integer(int, callbacks_invoked, callbacks_invoked)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,13,0))
+ ctf_integer(char, cb, cb)
+ ctf_integer(char, nr, nr)
+ ctf_integer(char, iit, iit)
+ ctf_integer(char, risk, risk)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+ ctf_integer(bool, cb, cb)
+ ctf_integer(bool, nr, nr)
+ ctf_integer(bool, iit, iit)
+ ctf_integer(bool, risk, risk)
+#endif
+ )
+)
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+/*
+ * Tracepoint for rcutorture readers. The first argument is the name
+ * of the RCU flavor from rcutorture's viewpoint and the second argument
+ * is the callback address.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_torture_read,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *rcutorturename, struct rcu_head *rhp,
+ unsigned long secs, unsigned long c_old, unsigned long c),
+
+ TP_ARGS(rcutorturename, rhp, secs, c_old, c),
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+ TP_PROTO(char *rcutorturename, struct rcu_head *rhp,
+ unsigned long secs, unsigned long c_old, unsigned long c),
+
+ TP_ARGS(rcutorturename, rhp, secs, c_old, c),
+#else
+ TP_PROTO(char *rcutorturename, struct rcu_head *rhp),
+
+ TP_ARGS(rcutorturename, rhp),
+#endif
+
+ TP_FIELDS(
+ ctf_string(rcutorturename, rcutorturename)
+ ctf_integer_hex(struct rcu_head *, rhp, rhp)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+ ctf_integer(unsigned long, secs, secs)
+ ctf_integer(unsigned long, c_old, c_old)
+ ctf_integer(unsigned long, c, c)
+#endif
+ )
+)
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
+/*
+ * Tracepoint for _rcu_barrier() execution. The string "s" describes
+ * the _rcu_barrier phase:
+ * "Begin": rcu_barrier_callback() started.
+ * "Check": rcu_barrier_callback() checking for piggybacking.
+ * "EarlyExit": rcu_barrier_callback() piggybacked, thus early exit.
+ * "Inc1": rcu_barrier_callback() piggyback check counter incremented.
+ * "Offline": rcu_barrier_callback() found offline CPU
+ * "OnlineQ": rcu_barrier_callback() found online CPU with callbacks.
+ * "OnlineNQ": rcu_barrier_callback() found online CPU, no callbacks.
+ * "IRQ": An rcu_barrier_callback() callback posted on remote CPU.
+ * "CB": An rcu_barrier_callback() invoked a callback, not the last.
+ * "LastCB": An rcu_barrier_callback() invoked the last callback.
+ * "Inc2": rcu_barrier_callback() piggyback check counter incremented.
+ * The "cpu" argument is the CPU or -1 if meaningless, the "cnt" argument
+ * is the count of remaining callbacks, and "done" is the piggybacking count.
+ */
+LTTNG_TRACEPOINT_EVENT(rcu_barrier,
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0))
+ TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+ TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done),
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) */
+
+ TP_ARGS(rcuname, s, cpu, cnt, done),
+
+ TP_FIELDS(
+ ctf_string(rcuname, rcuname)
+ ctf_string(s, s)
+ ctf_integer(int, cpu, cpu)
+ ctf_integer(int, cnt, cnt)
+ ctf_integer(unsigned long, done, done)
+ )
+)
+#endif
+
+#else /* #ifdef CONFIG_RCU_TRACE */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,80,0,0, 4,19,0,0,0,0))
+#define trace_rcu_grace_period(rcuname, gp_seq, gpevent) do { } while (0)
+#define trace_rcu_grace_period_init(rcuname, gp_seq, level, grplo, grphi, \
+ qsmask) do { } while (0)
+#define trace_rcu_preempt_task(rcuname, pid, gp_seq) do { } while (0)
+#define trace_rcu_unlock_preempted_task(rcuname, gp_seq, pid) do { } while (0)
+#define trace_rcu_quiescent_state_report(rcuname, gp_seq, mask, qsmask, level, \
+ grplo, grphi, gp_tasks) do { } \
+ while (0)
+#define trace_rcu_fqs(rcuname, gp_seq, cpu, qsevent) do { } while (0)
+#else
+#define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
+#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
+ qsmask) do { } while (0)
+#define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
+#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
+#define trace_rcu_quiescent_state_report(rcuname, gpnum, mask, qsmask, level, \
+ grplo, grphi, gp_tasks) do { } \
+ while (0)
+#define trace_rcu_fqs(rcuname, gpnum, cpu, qsevent) do { } while (0)
+#endif
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0))
+#define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
+#else
+#define trace_rcu_dyntick(polarity) do { } while (0)
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#define trace_rcu_prep_idle(reason) do { } while (0)
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
+#define trace_rcu_callback(rcuname, rhp, qlen_lazy, qlen) do { } while (0)
+#define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen_lazy, qlen) \
+ do { } while (0)
+#define trace_rcu_batch_start(rcuname, qlen_lazy, qlen, blimit) \
+ do { } while (0)
+#else
+#define trace_rcu_callback(rcuname, rhp, qlen) do { } while (0)
+#define trace_rcu_kfree_callback(rcuname, rhp, offset, qlen) do { } while (0)
+#define trace_rcu_batch_start(rcuname, qlen, blimit) do { } while (0)
+#endif
+#define trace_rcu_invoke_callback(rcuname, rhp) do { } while (0)
+#define trace_rcu_invoke_kfree_callback(rcuname, rhp, offset) do { } while (0)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#define trace_rcu_batch_end(rcuname, callbacks_invoked, cb, nr, iit, risk) \
+ do { } while (0)
+#else
+#define trace_rcu_batch_end(rcuname, callbacks_invoked) do { } while (0)
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0))
+#define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
+ do { } while (0)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
+#define trace_rcu_torture_read(rcutorturename, rhp) do { } while (0)
+#endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
+#define trace_rcu_barrier(name, s, cpu, cnt, done) do { } while (0)
+#endif
+#endif /* #else #ifdef CONFIG_RCU_TRACE */
+
+#endif /* LTTNG_TRACE_RCU_H */
+
+/* This part must be outside protection */
+#include <lttng/define_trace.h>
projects / deliverable / lttng-modules.git / blobdiff