>From e98f36b3a91d406c2375863dc003727bc8153f4f Mon Sep 17 00:00:00 2001
From: Akira Yokosawa <akiyks@xxxxxxxxx>
Date: Mon, 4 Jan 2021 21:14:10 +0900
Subject: [PATCH -perfbook] defer/rcuexercises: Annotate essential QQs
Quick Quizzes in this section should be presented in "nq" builds.
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
---
defer/rcuexercises.tex | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/defer/rcuexercises.tex b/defer/rcuexercises.tex
index 9438c9e5..476819a9 100644
--- a/defer/rcuexercises.tex
+++ b/defer/rcuexercises.tex
@@ -13,8 +13,7 @@ The \co{rcu_read_lock()}, \co{rcu_read_unlock()}, \co{rcu_dereference()},
\co{rcu_assign_pointer()}, and \co{synchronize_rcu()} primitives should
suffice for most of these exercises.
-\QuickQuizSeries{%
-\QuickQuizB{
+\EQuickQuiz{
The statistical-counter implementation shown in
Listing~\ref{lst:count:Per-Thread Statistical Counters}
(\path{count_end.c})
@@ -25,7 +24,7 @@ suffice for most of these exercises.
(Keep in mind that \co{read_count()}'s scalability will
necessarily be limited by its need to scan all threads'
counters.)
-}\QuickQuizAnswerB{
+}\EQuickQuizAnswer{
Hint: place the global variable \co{finalcount} and the
array \co{counterp[]} into a single RCU-protected struct.
At initialization time, this structure would be allocated
@@ -59,9 +58,9 @@ suffice for most of these exercises.
on
page~\pageref{sec:together:RCU and Per-Thread-Variable-Based Statistical Counters}
for more details.
-}\QuickQuizEndB
-%
-\QuickQuizE{
+}\EQuickQuizEnd
+
+\EQuickQuiz{
Section~\ref{sec:count:Applying Exact Limit Counters}
showed a fanciful pair of code fragments that dealt with counting
I/O accesses to removable devices.
@@ -73,7 +72,7 @@ suffice for most of these exercises.
(Keep in mind that the performance of the common-case first
code fragment that does I/O accesses is much more important
than that of the device-removal code fragment.)
-}\QuickQuizAnswerE{
+}\EQuickQuizAnswer{
Hint: replace the read-acquisitions of the reader-writer lock
with RCU read-side critical sections, then adjust the
device-removal code fragment to suit.
@@ -83,5 +82,4 @@ suffice for most of these exercises.
on
Page~\pageref{sec:together:RCU and Counters for Removable I/O Devices}
for one solution to this problem.
-}\QuickQuizEndE
-}
+}\EQuickQuizEnd
--
2.17.1
