Messages in this thread | | | Date | Tue, 23 Nov 2004 09:03:25 +0000 | From | Christoph Hellwig <> | Subject | Re: [PATCH 2.6.9] fork: add a hook in do_fork() |
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On Tue, Nov 23, 2004 at 07:03:17AM +0100, Guillaume Thouvenin wrote: > Hello, > > For a module, I need to execute a function when a fork occurs. My > solution is to add a pointer to a function (called fork_hook) in the > do_fork() and if this pointer isn't NULL, I call the function. To update > the pointer to the function I export a symbol (called trace_fork) that > defines another function with two parameters (the hook and an > identifier). This function provides a simple mechanism to manage access > to the fork_hook variable. > > I don't know if this solution is good but it's easy to implement and > it just does the trick. I made some tests and it doesn't impact the > performance of the Linux kernel. > > I'd like to have your comment about this patch. Is it useful and is > it needed by someone else than me?
Use SGI's PAGG patches if you want such hooks. Also this is clearly a _GPL export.
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