From: Michael Jeanson <mjeanson@efficios.com>
Date: Mon, 21 Nov 2022 17:12:40 +0000 (-0500)
Subject: Drop support for kernels < 4.4 from rcu instrumentation
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=d4c1b1de04e5b67db563ed5dd3d229239720c3fb;p=lttng-modules.git

Drop support for kernels < 4.4 from rcu instrumentation

Change-Id: I4c1aabf233f4f8ccfdd6c93469c10efe79507cd8
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/instrumentation/events/rcu.h b/include/instrumentation/events/rcu.h
index 3dafbc5d..bb058ba8 100644
--- a/include/instrumentation/events/rcu.h
+++ b/include/instrumentation/events/rcu.h
@@ -21,11 +21,7 @@
  */
 LTTNG_TRACEPOINT_EVENT(rcu_utilization,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
 	TP_PROTO(const char *s),
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
-	TP_PROTO(char *s),
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
 
 	TP_ARGS(s),
 
@@ -37,8 +33,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_utilization,
 #ifdef CONFIG_RCU_TRACE
 
 #if defined(CONFIG_TREE_RCU) \
-	|| (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,19,0) \
-		&& defined(CONFIG_PREEMPT_RCU)) \
+	|| defined(CONFIG_PREEMPT_RCU) \
 	|| defined(CONFIG_TREE_PREEMPT_RCU)
 
 /*
@@ -64,23 +59,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_grace_period,
 		ctf_string(gpevent, gpevent)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_PROTO(const char *rcuname, unsigned long gpnum, const char *gpevent),
 
 	TP_ARGS(rcuname, gpnum, gpevent),
 
@@ -117,27 +99,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_grace_period_init,
 		ctf_integer(unsigned long, qsmask, qsmask)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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,
+	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),
@@ -173,23 +138,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_preempt_task,
 		ctf_integer(int, pid, pid)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_PROTO(const char *rcuname, int pid, unsigned long gpnum),
 
 	TP_ARGS(rcuname, pid, gpnum),
 
@@ -220,23 +172,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_unlock_preempted_task,
 		ctf_integer(int, pid, pid)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_PROTO(const char *rcuname, unsigned long gpnum, int pid),
 
 	TP_ARGS(rcuname, gpnum, pid),
 
@@ -277,30 +216,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_quiescent_state_report,
 		ctf_integer(u8, gp_tasks, gp_tasks)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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,
+	TP_PROTO(const char *rcuname, unsigned long gpnum,
 		 unsigned long mask, unsigned long qsmask,
 		 u8 level, int grplo, int grphi, int gp_tasks),
 
@@ -342,24 +261,10 @@ LTTNG_TRACEPOINT_EVENT(rcu_fqs,
 		ctf_string(qsevent, qsevent)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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_PROTO(const char *rcuname, unsigned long gpnum, int cpu, const char *qsevent),
 
 	TP_ARGS(rcuname, gpnum, cpu, qsevent),
 
@@ -425,7 +330,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 	)
 )
 
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
+#else
 LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 
 	TP_PROTO(const char *polarity, long long oldnesting, long long newnesting),
@@ -438,34 +343,9 @@ LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
 		ctf_integer(long long, newnesting, newnesting)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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
@@ -490,11 +370,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_dyntick,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_prep_idle,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
 	TP_PROTO(const char *reason),
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
-	TP_PROTO(char *reason),
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
 
 	TP_ARGS(reason),
 
@@ -502,7 +378,6 @@ LTTNG_TRACEPOINT_EVENT(rcu_prep_idle,
 		ctf_string(reason, reason)
 	)
 )
-#endif
 
 /*
  * Tracepoint for the registration of a single RCU callback function.
@@ -525,7 +400,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_callback,
 		ctf_integer(long, qlen, qlen)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
+#else
 LTTNG_TRACEPOINT_EVENT(rcu_callback,
 
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, long qlen_lazy,
@@ -541,36 +416,6 @@ LTTNG_TRACEPOINT_EVENT(rcu_callback,
 		ctf_integer(long, qlen, qlen)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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
 
 
@@ -597,7 +442,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
 		ctf_integer(long, qlen, qlen)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
+#else
 LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
 
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
@@ -613,37 +458,6 @@ LTTNG_TRACEPOINT_EVENT(rcu_kfree_callback,
 		ctf_integer(long, qlen, qlen)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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
 
 /*
@@ -666,7 +480,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
 		ctf_integer(long, blimit, blimit)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
+#else
 LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
 
 	TP_PROTO(const char *rcuname, long qlen_lazy, long qlen, long blimit),
@@ -680,47 +494,6 @@ LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
 		ctf_integer(long, blimit, blimit)
 	)
 )
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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
 
 /*
@@ -730,11 +503,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_batch_start,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_invoke_callback,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp),
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
-	TP_PROTO(char *rcuname, struct rcu_head *rhp),
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
 
 	TP_ARGS(rcuname, rhp),
 
@@ -754,11 +523,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_invoke_callback,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_invoke_kfree_callback,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
-	TP_PROTO(char *rcuname, struct rcu_head *rhp, unsigned long offset),
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
 
 	TP_ARGS(rcuname, rhp, offset),
 
@@ -782,45 +547,21 @@ LTTNG_TRACEPOINT_EVENT(rcu_invoke_kfree_callback,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_batch_end,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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
@@ -828,35 +569,20 @@ LTTNG_TRACEPOINT_EVENT(rcu_batch_end,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_torture_read,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,6,0))
 /*
  * Tracepoint for _rcu_barrier() execution.  The string "s" describes
  * the _rcu_barrier phase:
@@ -876,11 +602,7 @@ LTTNG_TRACEPOINT_EVENT(rcu_torture_read,
  */
 LTTNG_TRACEPOINT_EVENT(rcu_barrier,
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0))
 	TP_PROTO(const char *rcuname, const char *s, int cpu, int cnt, unsigned long done),
-#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
-	TP_PROTO(char *rcuname, char *s, int cpu, int cnt, unsigned long done),
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,12,0)) */
 
 	TP_ARGS(rcuname, s, cpu, cnt, done),
 
@@ -892,7 +614,6 @@ LTTNG_TRACEPOINT_EVENT(rcu_barrier,
 		ctf_integer(unsigned long, done, done)
 	)
 )
-#endif
 
 #else /* #ifdef CONFIG_RCU_TRACE */
 
@@ -921,42 +642,23 @@ LTTNG_TRACEPOINT_EVENT(rcu_barrier,
 
 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,16,0))
 #define trace_rcu_dyntick(polarity, oldnesting, newnesting, dyntick) do { } while (0)
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
-#define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
 #else
-#define trace_rcu_dyntick(polarity) do { } while (0)
+#define trace_rcu_dyntick(polarity, oldnesting, newnesting) do { } while (0)
 #endif
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
+
 #define trace_rcu_prep_idle(reason) do { } while (0)
-#endif
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,9,0))
 #define trace_rcu_torture_read(rcutorturename, rhp, secs, c_old, c) \
 	do { } while (0)
-#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,3,0))
-#define trace_rcu_torture_read(rcutorturename, rhp) do { } while (0)
-#endif
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 */