From: Ben Pfaff <blp@cs.stanford.edu>
Date: Tue, 6 Feb 2007 21:09:10 +0000 (+0000)
Subject: Improve example for "Can a thread's priority change while it is on the
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac9f17fe4a74b4a85506ad5cafcb894ca4ef1a7f;p=pintos-anon

Improve example for "Can a thread's priority change while it is on the
ready queue?" FAQ.  From Godmar Back.
---

diff --git a/doc/threads.texi b/doc/threads.texi
index c1381d0..f1fd4df 100644
--- a/doc/threads.texi
+++ b/doc/threads.texi
@@ -740,11 +740,9 @@ to thread @var{B} (with priority 3), then @var{B}'s new priority is 5, not 8.
 
 @item Can a thread's priority change while it is on the ready queue?
 
-Yes.  Consider this case: low-priority thread @var{L} holds a
-lock that high-priority thread @var{H} wants, so @var{H} donates its
-priority to @var{L}.  @var{L} releases the lock and
-thus loses the CPU and is moved to the ready queue.  Now @var{L}'s
-old priority is restored while it is in the ready queue.
+Yes.  Consider a ready, low-priority thread @var{L} that holds a lock.
+High-priority thread @var{H} attempts to acquire the lock and blocks,
+thereby donating its priority to ready thread @var{L}.
 
 @item Can a thread's priority change while it is blocked?