Deadline tasks behave differently of other tasks because deadline
task's also depend on their period, deadline and runtime.
Hence, the well known sched:sched_wakeup and sched:sched_switch
tracepoints are not always enough to precisely explain the behavior of a
deadline task with respect to the task's period, deadline and runtime
consumption.
This patch series implements tracepoints for the following deadline
scheduler points of interest:
- sched:sched_deadline_replenish: Informs the periodic runtime
replenishment of a deadline task.
- sched:sched_deadline_yield: Informs that a deadline task called
sched_yield(), and will wait for the next period.
- sched:sched_deadline_throttle: Informs that a task consumed all its
available runtime and was throttled.
- sched:sched_deadline_block: Informs that a deadline task went to sleep
waiting to be awakened by another task.
Daniel Bristot de Oliveira (3):
sched: Move deadline container_of() helper functions into sched.h
sched/deadline: Tracepoints for deadline scheduler
tools lib traceevent: Implements '%' operation
Steven Rostedt (Red Hat) (1):
tracing: Add __print_ns_to_secs() and __print_ns_without_secs()
helpers
include/trace/events/sched.h | 87 ++++++++++++++++++++++++++++++++++++++
include/trace/trace_events.h | 25 +++++++++++
kernel/sched/deadline.c | 34 +++++++--------
kernel/sched/sched.h | 18 ++++++++
tools/lib/traceevent/event-parse.c | 4 ++
5 files changed, 149 insertions(+), 19 deletions(-)
--
2.5.0
