Messages in this thread | | | Subject | Re: [PATCH 2.6.9] fork: add a hook in do_fork() | From | Guillaume Thouvenin <> | Date | Tue, 23 Nov 2004 10:33:27 +0100 |
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On Tue, 2004-11-23 at 09:03 +0000, Christoph Hellwig wrote: > On Tue, Nov 23, 2004 at 07:03:17AM +0100, Guillaume Thouvenin wrote: > > > > 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. > > > Use SGI's PAGG patches if you want such hooks. Also this is clearly > a _GPL export.
PAGG is more intrusive than my patch due to the management of groups of processes. This hook in the fork allows me to provide a solution to do per-group accounting with a module. If PAGG is added in the Linux Kernel Tree it could be the solution, you are right.
Guillaume
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