Re: [PATCH] Add munmap events to perf

[Peter Zijlstra]

On Tue, 2010-06-29 at 09:33 +0100, Eric B Munson wrote:
> On Mon, 28 Jun 2010, Peter Zijlstra wrote:
> 
> > On Mon, 2010-06-28 at 19:08 +0100, Eric B Munson wrote:
> > > This patch adds a new software event for munmaps.  It will allows
> > > users to profile changes to address space.  munmaps will be tracked
> > > with mmaps.
> > 
> > Why?
> > 
> 
> It is going to be used by a tool that will model memory usage over the
> lifetime of a process.

Wouldn't it be better to use some tracepoints for that instead? I want
to keep the sideband data to a minimum required to interpret the sample
data, and you don't need unmap events for that.


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