Hi Steven, Any comment on this one? I'm supposed it will be taken by your tracing tree? Thanks, Yang On 3/4/2016 4:52 AM, Tejun Heo wrote:
On Thu, Mar 03, 2016 at 01:08:57AM -0800, Yang Shi wrote:commit 5634cc2aa9aebc77bc862992e7805469dcf83dac ("writeback: update writeback tracepoints to report cgroup") made writeback tracepoints print out cgroup path when CGROUP_WRITEBACK is enabled, but it may trigger the below bug on -rt kernel since kernfs_path and kernfs_path_len are called by tracepoints, which acquire spin lock that is sleepable on -rt kernel.Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks.
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