Messages in this thread | | | Subject | Re: [RFC V4 PATCH] trace: writeback: replace cgroup path to cgroup ino | From | "Shi, Yang" <> | Date | Sun, 6 Mar 2016 19:32:26 -0800 |
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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@kernel.org> > > Thanks. >
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