Update

[pintos-anon] / TODO

diff --git a/TODO b/TODO
index 85d2dd3db9506996f5f5e78eee57676bdd73ce78..da3937dec3f973f08b71e378cecd332bf9ae4266 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,19 +1,21 @@
 -*- text -*-
 
 -*- text -*-
 

-* The tests in tests/ don't apply the grading patches.
+* Remove names from synchronization primitives?  They don't seem
+  useful in practice.
+
+* debug_backtrace() in kernel should only dereference valid pointers.
+
+* Mention how to use add-symbol-file in gdb.

 
 * We need better and more example programs.
 
   - Need an mmap example program as a replacement for the crappy mmap FAQ
     question.
 
 
 * We need better and more example programs.
 
   - Need an mmap example program as a replacement for the crappy mmap FAQ
     question.
 

-* Make it clear that the students own their code, because there was some
-  confusion on that point.
+  - How about `diff' and `cmp' programs?

 
 * Threads:
 
 
 * Threads:
 

-  - join-invalid doesn't compile if tid_t is not scalar type.
-

   - mlfqs tests suck.  They aren't even correct, e.g. the amarv
     submission from win0405 is graded incorrectly.
 
   - mlfqs tests suck.  They aren't even correct, e.g. the amarv
     submission from win0405 is graded incorrectly.
 


@@ -25,12 +27,6 @@
     project 3 and in real OSes.  Also revise the grading criteria to
     match.
 
     project 3 and in real OSes.  Also revise the grading criteria to
     match.
 

-  - Move `join' implementation here, from `threads' project, to help
-    normalize the project difficulties.
-
-  - The semantics of the join system call should change so that it
-    only returns the exit code once.
-

   - Mark read-only pages as actually read-only in the page table.  Or,
     since this was consistently rated as the easiest project by the
     students, require them to do it.
   - Mark read-only pages as actually read-only in the page table.  Or,
     since this was consistently rated as the easiest project by the
     students, require them to do it.


@@ -59,14 +55,17 @@
 
     Alternatively, shrink the inode size.
 
 
     Alternatively, shrink the inode size.
 

-  - Add mkdir and ls example user programs.
-

   - Add option to disable buffer cache.
 
   - Add option to disable buffer cache.
 

-  - Get rid of "dump" commands--they're not really useful.
-

   - Sample solution.
 
   - 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.
 * Documentation:
 
   - Finish writing tour.


@@ -77,6 +76,8 @@
   - Add explanations of what "real" OSes do to give students some
     perspective.
 
   - Add explanations of what "real" OSes do to give students some
     perspective.
 

+  - GNU make 3.80 or later is required.
+

 * Assignments:
 
   - Add extra credit:
 * Assignments:
 
   - Add extra credit:


@@ -89,8 +90,7 @@
 
     . opendir/readdir/closedir
 
 
     . opendir/readdir/closedir
 

-  - Add src/testcases/vm, src/testcases/filesys and make it clear to use
-    them?
+    . everything needed for getcwd()

 
 * Tests:
 
 
 * Tests:
 


@@ -104,3 +104,9 @@
     too long (especially when SHOW_PROGRESS is turned on) and doesn't
     show significant improvement.
 
     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.