Messages in this thread | | | From | Xie XiuQi <> | Subject | [RFC PATCH v3 0/2] tracing: add trace event for memory-failure | Date | Tue, 7 Apr 2015 19:05:29 +0800 |
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RAS user space tools like rasdaemon which base on trace event, could receive mce error event, but no memory recovery result event. So, I want to add this event to make this scenario complete.
This patch add a event at ras group for memory-failure.
The output like below: # tracer: nop # # entries-in-buffer/entries-written: 2/2 #P:24 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | mce-inject-13150 [001] .... 277.019359: memory_failure_event: pfn 0x19869: recovery action for free buddy page: Delayed
-- v2->v3: - rebase on top of linux-next - based on Steven Rostedt's "tracing: Add TRACE_DEFINE_ENUM() macro to map enums to their values" patch set v1.
v1->v2: - Comment update - Just passing 'result' instead of 'action_name[result]', suggested by Steve. And hard coded there because trace-cmd and perf do not have a way to process enums.
Xie XiuQi (2): memory-failure: export page_type and action result tracing: add trace event for memory-failure
include/linux/mm.h | 34 ++++++++++ include/ras/ras_event.h | 83 ++++++++++++++++++++++++ kernel/trace/trace.c | 2 +- mm/memory-failure.c | 165 ++++++++++++++++++++---------------------------- 4 files changed, 185 insertions(+), 99 deletions(-)
-- 1.8.3.1
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