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[[!meta copyright="Copyright © 2008 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled
[[GNU Free Documentation License|/fdl]]."]]"""]]
[[!meta title="Karim Allah Ahmed"]]
<karim.allah.ahmed@gmail.com>
Egypt.
---
#GSoC: 2010 Project
Goal:
---
#Roadmap
##Progress
###Preparation Phase:
Understanding how gnumach ticks [ at least the parts related to the project ]
---
####28th of April - 5th of May:
* Reading the paging in code in gnumach.
* Reading the libpager code, and the multipage patch.
* Reading the translators code, only the part implementing the external pager interface.
####5th of May - 12th of May:
* Reading the paging out code in gnumach.
* Understanding IPC in gnumach and reading some code.
* Reading "[gnu_src]/kern/sched_prim.c"
####12th of May - 19th of May:
* Finishing the leftover code in some of the previous phases.
* Building a big and a more clear picture of how gnumach ticks [ wiring things together ].
####19th of May - 23th of May:
* Off [College related-activities].
---
###Coding Phase:
Stage 1:
####24th of May - 26th of May:
* Read the freeBSD multipages implementation.
* Basic Modifications of gnumach's code.
* err.. scratch this step. It's easier to work on porting OSF Mach's implementation of multi-pages.
####26th of May - 28th of May:
* (./) port OSF Mach's clustered pagein during 'page faults' ( [src]/vm/vm_fault.c )
* (./) port "cluster_size" attribute of memory objects from OSF Mach.
* (./) port "behavior" attribute of vm_map entries from OSF Mach.
####29th of May - 2nd of June:
* Off ( Oral Exams )
####2nd of May - 4th of June:
* Finish the port of the previous phase.
---
####4th of June - 4th of July:
* Off ( Final Exams ).
---
Stage 2:
####5th of July - 7th of July:
* (./) Add "cluster_size" attribute to Neal Walfield's patch for the pager library.
---
Stage 3:
####8th of July - 15th of July:
* (./) Patch the diskfs library to use the new pager library API.
* (./) Patch the ext2fs disk paging related routines to use the new pager library API.
####16th of July - 19th of July:
* Testing the current patches.
* Stuck in compiling code ( http://30.media.tumblr.com/tumblr_l5ie1bb2u91qbjipvo1_500.jpg ) , so I started reading some documentation meanwhile ( [0] , [1] ).
---
Stage 4:
####19th of July - 31th of June:
* Check OSF Mach's mach-defpager.
* Patch (or port OSF Mach's default pager) HURD's mach-defpager to use the new gnumach's RPCs.
---
Stage 5:
####1st of August - 10th of August:
* Testing the ported translators.
* Fixing the boot bit-mapped memory allocator patch.
---
Stage 1:
* clustered_paging.diff patch http://lists.gnu.org/archive/html/bug-hurd/2010-06/msg00024.html
TODO:
* Update the headers of the modified files in GNU Mach to reflect the fact that they were ported from OSF Mach.
* Implement posix_madvise(), posix_fadvise, and readahead() in glibc.
* Update the documentation of GNU Mach with the new interfaces.
* (./) Revise and finish the code related to default_memory_manager management in GNU Mach. [done]
* Port the vm_page "clustered" attribute. [ to mark that the page wasn't requested but was paged-in as part of the cluster ].
---
# Readings
[0] http://www.nongnu.org/ext2-doc/ext2.html
[1] http://kerneltrap.org/node/452
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