fix: timer/trace: Improve timer tracing (v5.2)

[lttng-modules.git] / instrumentation / events / lttng-module / timer.h

diff --git a/instrumentation/events/lttng-module/timer.h b/instrumentation/events/lttng-module/timer.h
index e7ff8e6fd33029b64a4dd4c53f6dedd6d3f28a39..997084ffcb5933786373a528592db750abba7ba3 100644 (file)
--- a/instrumentation/events/lttng-module/timer.h
+++ b/instrumentation/events/lttng-module/timer.h
@@ -1,10 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM timer
 
 #if !defined(LTTNG_TRACE_TIMER_H) || defined(TRACE_HEADER_MULTI_READ)
 #define LTTNG_TRACE_TIMER_H
 
-#include "../../../probes/lttng-tracepoint-event.h"
+#include <probes/lttng-tracepoint-event.h>
 
 #ifndef _TRACE_TIMER_DEF_
 #define _TRACE_TIMER_DEF_
@@ -16,6 +17,12 @@ struct timer_list;
 
 #endif /* _TRACE_TIMER_DEF_ */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#define lttng_ktime_get_tv64(kt)       (kt)
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#define lttng_ktime_get_tv64(kt)       ((kt).tv64)
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+
 LTTNG_TRACEPOINT_EVENT_CLASS(timer_class,
 
        TP_PROTO(struct timer_list *timer),
@@ -38,7 +45,8 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE(timer_class, timer_init,
        TP_ARGS(timer)
 )
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0) || \
+       LTTNG_RHEL_KERNEL_RANGE(3,10,0,957,0,0, 3,11,0,0,0,0))
 /**
  * timer_start - called when the timer is started
  * @timer:     pointer to struct timer_list
@@ -81,6 +89,27 @@ LTTNG_TRACEPOINT_EVENT(timer_start,
 )
 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0))
+/**
+ * timer_expire_entry - called immediately before the timer callback
+ * @timer:     pointer to struct timer_list
+ *
+ * Allows to determine the timer latency.
+ */
+LTTNG_TRACEPOINT_EVENT(timer_expire_entry,
+
+       TP_PROTO(struct timer_list *timer, unsigned long baseclk),
+
+       TP_ARGS(timer, baseclk),
+
+       TP_FIELDS(
+               ctf_integer_hex(void *, timer, timer)
+               ctf_integer(unsigned long, now, jiffies)
+               ctf_integer_hex(void *, function, timer->function)
+               ctf_integer(unsigned long, baseclk, baseclk)
+       )
+)
+#else
 /**
  * timer_expire_entry - called immediately before the timer callback
  * @timer:     pointer to struct timer_list
@@ -99,6 +128,7 @@ LTTNG_TRACEPOINT_EVENT(timer_expire_entry,
                ctf_integer_hex(void *, function, timer->function)
        )
 )
+#endif
 
 /**
  * timer_expire_exit - called immediately after the timer callback returns
@@ -154,6 +184,27 @@ LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_init,
  * hrtimer_start - called when the hrtimer is started
  * @timer: pointer to struct hrtimer
  */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,16,0) || \
+       LTTNG_RT_KERNEL_RANGE(4,14,0,0, 4,15,0,0))
+LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start,
+
+       timer_hrtimer_start,
+
+       TP_PROTO(struct hrtimer *hrtimer, enum hrtimer_mode mode),
+
+       TP_ARGS(hrtimer, mode),
+
+       TP_FIELDS(
+               ctf_integer_hex(void *, hrtimer, hrtimer)
+               ctf_integer_hex(void *, function, hrtimer->function)
+               ctf_integer(s64, expires,
+                       lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer)))
+               ctf_integer(s64, softexpires,
+                       lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer)))
+               ctf_integer(enum hrtimer_mode, mode, mode)
+       )
+)
+#else
 LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start,
 
        timer_hrtimer_start,
@@ -165,10 +216,13 @@ LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_start,
        TP_FIELDS(
                ctf_integer_hex(void *, hrtimer, hrtimer)
                ctf_integer_hex(void *, function, hrtimer->function)
-               ctf_integer(s64, expires, hrtimer_get_expires(hrtimer).tv64)
-               ctf_integer(s64, softexpires, hrtimer_get_softexpires(hrtimer).tv64)
+               ctf_integer(s64, expires,
+                       lttng_ktime_get_tv64(hrtimer_get_expires(hrtimer)))
+               ctf_integer(s64, softexpires,
+                       lttng_ktime_get_tv64(hrtimer_get_softexpires(hrtimer)))
        )
 )
+#endif
 
 /**
  * htimmer_expire_entry - called immediately before the hrtimer callback
@@ -188,7 +242,7 @@ LTTNG_TRACEPOINT_EVENT_MAP(hrtimer_expire_entry,
 
        TP_FIELDS(
                ctf_integer_hex(void *, hrtimer, hrtimer)
-               ctf_integer(s64, now, now->tv64)
+               ctf_integer(s64, now, lttng_ktime_get_tv64(*now))
                ctf_integer_hex(void *, function, hrtimer->function)
        )
 )
@@ -240,6 +294,26 @@ LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(timer_hrtimer_class, hrtimer_cancel,
  *             zero, otherwise it is started
  * @expires:   the itimers expiry time
  */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
+LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
+
+       timer_itimer_state,
+
+       TP_PROTO(int which, const struct itimerval *const value,
+                unsigned long long expires),
+
+       TP_ARGS(which, value, expires),
+
+       TP_FIELDS(
+               ctf_integer(int, which, which)
+               ctf_integer(unsigned long long, expires, expires)
+               ctf_integer(long, value_sec, value->it_value.tv_sec)
+               ctf_integer(long, value_usec, value->it_value.tv_usec)
+               ctf_integer(long, interval_sec, value->it_interval.tv_sec)
+               ctf_integer(long, interval_usec, value->it_interval.tv_usec)
+       )
+)
+#else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
 LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
 
        timer_itimer_state,
@@ -258,6 +332,7 @@ LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
                ctf_integer(long, interval_usec, value->it_interval.tv_usec)
        )
 )
+#endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
 
 /**
  * itimer_expire - called when itimer expires
@@ -265,6 +340,22 @@ LTTNG_TRACEPOINT_EVENT_MAP(itimer_state,
  * @pid:       pid of the process which owns the timer
  * @now:       current time, used to calculate the latency of itimer
  */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
+LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire,
+
+       timer_itimer_expire,
+
+       TP_PROTO(int which, struct pid *pid, unsigned long long now),
+
+       TP_ARGS(which, pid, now),
+
+       TP_FIELDS(
+               ctf_integer(int , which, which)
+               ctf_integer(pid_t, pid, pid_nr(pid))
+               ctf_integer(unsigned long long, now, now)
+       )
+)
+#else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
 LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire,
 
        timer_itimer_expire,
@@ -279,8 +370,9 @@ LTTNG_TRACEPOINT_EVENT_MAP(itimer_expire,
                ctf_integer(cputime_t, now, now)
        )
 )
+#endif /* #else (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
 
 #endif /*  LTTNG_TRACE_TIMER_H */
 
 /* This part must be outside protection */
-#include "../../../probes/define_trace.h"
+#include <probes/define_trace.h>