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Subject[PATCH v6 0/2] tracing: Add trace events for preemption and irq disable/enable
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These patches add trace events support for preempt and irq disable/enable
events.

Changes since v5:
- Use trace_*_rcuidle variants (thanks Steve!)

Here's an example of how Android's systrace will be using it to show critical
sections as a gantt chart: http://imgur.com/download/TZplEVp

Links to earlier series:
v5: https://lkml.org/lkml/2017/9/12/507
v4: https://lkml.org/lkml/2017/9/6/724
v3: https://lkml.org/lkml/2017/9/3/15

Joel Fernandes (2):
tracing: Prepare to add preempt and irq trace events
tracing: Add support for preempt and irq enable/disable events

include/linux/ftrace.h | 3 +-
include/linux/irqflags.h | 4 +-
include/trace/events/preemptirq.h | 66 ++++++++++++++
kernel/trace/Kconfig | 9 ++
kernel/trace/Makefile | 1 +
kernel/trace/trace_irqsoff.c | 176 +++++++++++++++++++++++++++++++-------
6 files changed, 226 insertions(+), 33 deletions(-)
create mode 100644 include/trace/events/preemptirq.h

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zilstra <peterz@infradead.org>
--
2.14.1.821.g8fa685d3b7-goog

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