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SubjectRe: [PATCH 0/4] [GIT PULL] memory saving ring buffer for tip/tracing/ftrace
On Wed, 11 Mar 2009 22:37:20 -0400
Steven Rostedt <> wrote:

> Ingo,
> This patch series implements a better memory management by the
> ring buffer. It only allocates the buffers for the online CPUS, as well
> as keeps the buffers to a minimum size until they are used.
> Please pull the latest tip/tracing/ftrace tree, which can be found at:
> git://
> tip/tracing/ftrace
> Steven Rostedt (4):
> tracing: keep ring buffer to minimum size till used
> tracing: expand the ring buffers when an event is activated
> tracing: fix trace_wait to know to wait on all cpus or just one
> ring-buffer: only allocate buffers for online cpus

How difficult is it to apply this to 2.6.27? Fedora is still on that
kernel and it would be nice if I could get my memory back on a
distribution kernel. :)

-- Pierre Ossman

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