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    SubjectRe: [PATCH 03/16 v2] tracing: Add a proc file to stop tracing and free buffer
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    On Wed, 2011-06-15 at 16:25 +0200, Frederic Weisbecker wrote:
    > On Wed, Jun 15, 2011 at 09:48:44AM -0400, Steven Rostedt wrote:
    > > From: Vaibhav Nagarnaik <vnagarnaik@google.com>
    > >
    > > The proc file entry buffer_size_kb is used to set the size of tracing
    > > buffer.
    > >
    > > The memory to expand the buffer size is kernel memory. Consider
    > > a use case where tracing is handled by a user space utility, which acts
    > > as a gate keeper for tracing requests. In an OOM condition, tracing is
    > > considered a low priority task and if the utility gets killed the ring
    > > buffer memory cannot be released back to the kernel.
    > >
    > > This patch adds a proc file called "free_buffer" whose purpose is to
    > > stop tracing and free up the ring buffer when it is closed.
    > >

    >
    > s/proc/debugfs, right?

    Oops, I didn't even notice it said that. But you are correct, the patch
    adds a debugfs not a proc file.

    Not sure it's worth redoing for the changelog though :-/

    -- Steve





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