Clarification.

[pintos-anon] / TODO

diff --git a/TODO b/TODO
index 62c9b0d0b2d3f7bcb1413a8272f9e110f1cf7265..726b11801f8e53185edc813ce1cd37d7bbf95d10 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,33 +1,24 @@
 -*- text -*-
 
-* Improve automatic interpretation of exception messages.
+* Get rid of rox--causes more trouble than it's worth
 
-* Remove names from synchronization primitives?  They don't seem
-  useful in practice.
+* Reconsider command line arg style--confuses everyone.
 
-* debug_backtrace() in kernel should only dereference valid pointers.
+* pintos script doesn't (always?) delete temp disks
 
-* Mention how to use add-symbol-file in gdb.
+* Finish writing tour.
 
-* We need better and more example programs.
 
-  - Need an mmap example program as a replacement for the crappy mmap FAQ
-    question.
 
-  - How about `diff' and `cmp' programs?
 
-* Threads:
 
-  - mlfqs tests suck.  They aren't even correct, e.g. the amarv
-    submission from win0405 is graded incorrectly.
+* process_death test needs improvement
 
-* Userprog project:
+* Internal tests.
+
+* Improve automatic interpretation of exception messages.
 
-  - Don't emphasize that stuff needs to be copied from user space to
-    kernel space.  Instead, emphasize validation and suggest that
-    copying is a common solution and that it will be necessary in
-    project 3 and in real OSes.  Also revise the grading criteria to
-    match.
+* Userprog project:
 
   - Mark read-only pages as actually read-only in the page table.  Or,
     since this was consistently rated as the easiest project by the
@@ -39,47 +30,21 @@
     Alternately we could just remove the synchronization on pid
     selection and check that students fix it.
 
-* VM project:
-
-  - Discuss the perils of mixing dirty bits between kernel and user virtual
-    memory.
-
-  - Sample solution.
-
-  - Update grading/vm to reflect new mmap, munmap forms.
-
 * Filesys project:
 
-  - Increase maximum disk size from 8 MB to something that actually
-    requires doubly indirect nodes.  There is a negative pressure here
-    from the bitmap object--perhaps we need a specialized bitmap that
-    doesn't have to be all in-memory at once.
-
-    Alternatively, shrink the inode size.
-
-  - Add option to disable buffer cache.
-
-  - Sample solution.
-
   - Need a better way to measure performance improvement of buffer
     cache.  Some students reported that their system was slower with
     cache--likely, Bochs doesn't simulate a disk with a realistic
     speed.
 
-  - Clarify effect of remove(cwd).
-
 * Documentation:
 
-  - Finish writing tour.
-
   - Add "Digging Deeper" sections that describe the nitty-gritty x86
     details for the benefit of those interested.
 
   - Add explanations of what "real" OSes do to give students some
     perspective.
 
-  - GNU make 3.80 or later is required.
-
 * Assignments:
 
   - Add extra credit:
@@ -93,22 +58,3 @@
     . opendir/readdir/closedir
 
     . everything needed for getcwd()
-
-* Tests:
-
-  - Release some of them.
-
-  - The threads, userprog, vm test source files could use
-    factorization and cleanup along the lines of fslib in the filesys
-    tests.
-
-  - The p1-4.c testcase needs significant tuning.  Currently it takes
-    too long (especially when SHOW_PROGRESS is turned on) and doesn't
-    show significant improvement.
-
-* Code:
-
-  - Need an optimization barrier and an explanation of it in the
-    documentation.
-
-  - Need to check the wait system call more thoroughly.