Messages in this thread | | | From | Joel Fernandes <> | Subject | [PATCH v6 0/2] tracing: Add trace events for preemption and irq disable/enable | Date | Thu, 21 Sep 2017 18:50:22 -0700 |
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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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