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SubjectRe: [PATCH v4 3/3] tracing: add trace event for memory-failure
On Mon, 20 Apr 2015 16:44:40 +0800
Xie XiuQi <xiexiuqi@huawei.com> wrote:

> 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
>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>

Looks good to me.

Acked-by: Steven Rostedt <rostedt@goodmis.org>

-- Steve



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