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    SubjectRe: [PATCH 3/8] pstore: Add persistent function tracing
    On Tue, Jul 17, 2012 at 05:38:22PM -0400, Steven Rostedt wrote:
    > > > BTW, can any of the called functions go into module code that can be
    > > > removed? If so, then this is not safe at all. Normal function tracing
    > > > can not be synced in a preemptible kernel.
    > >
    > > Um. Yes, psinfo->write_buf() might be in the module. Nice catch.

    Oh, actually, while write_buf() can technically be in a removable module,
    the RAM backend can't be removed once loaded. So it is not a real issue.
    But I'll implement your idea anyway, it seems a bit cleaner and safer,
    plus if we ever want to make persistent_ram backend removable, we won't
    need to bother w/ this particular issue.


    Anton Vorontsov

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