In the interest of having a set of process management hooks that would enable clusterwide process mangement modules such as those being developed for OpenSSI and other systems, Laura and I have a proposed set of hooks for Clusterwide process management. Included here is a short introduction to the hooks (2 pages), a 24 page design document describing the clusterwide process management design and hooks, a changelog page describing the versions of the documents/patches, and some patches. The OpenSSI code has not yet been adapted to fit these new hooks.

We welcome any feedback on the ssic-linux-devel mailing list.

Bruce Walker (bruce.walker@hp.com)

• Short introduction to process management hooks. This intro is also included in the patch below.
• Design document (PDF) for process management hooks.
• Paper presented at OLS (2005, Volume 2, page 251).
• Changelog for design document and hooks.
• Commentary on changes made to the kernel

Using the latest CVS code for the 2.6.11.10 kernel

1. Checkout latest hooks from the OPENSSI-HOOKS branch of the CVS repository:

   $ cvs -d:pserver:anonymous@cvs.openssi.org:/cvsroot/ssic-linux login
   $ cvs -z3 -d:pserver:anonymous@cvs.openssi.org:/cvsroot/ssic-linux co -r OPENSSI-HOOKS openssi

2. Download and extract the Linux 2.6.11.10 kernel
3. Copy openssi/kernel/* into the extracted Linux 2.6.11.10 source tree
4. Download and apply the CI patch file (`patch -p1 <...')
5. Build the kernel using openssi/kernel.configs/development.i686 as .config
6. Build the cproc module:

   make M=../openssi/clusterproc

Old patches for the 2.6.10 kernel

In this version, we offer not only the complete patch but also present it as 3 patches. Patch 1 is a patch of enabling changes that modify the base kernel binary. As such, this patch needs the most scrutiny. Accompanying patch 1 is a text file explaining each of the proposed patches. The second patch is just clusterproc.h, which has the definition of the hook functions and descriptions of each function. Patch 3 is the rest of hooks to enable clusterproc. These hooks do not change the kernel binary if CONFIG_CLUSTERPROC is not defined.

• Download of the complete 2.6.10 patch (118K), without commentary on the patches.
• Download of patch1 (17K), the patch that modifies the kernel binary, and a commentary on the patches in patch1 (same as the commentary link above).
• Download of patch2 (68K), which is just clusterproc.h.
• Download of patch3 (35K), which are the remaining hooks that don't change the kernel binary if CONFIG_CLUSTERPROC is not defined.