[project @ 2002-11-18 14:25:50 by simonpj]

[ghc-hetmet.git] / ghc / docs / users_guide / profiling.sgml

diff --git a/ghc/docs/users_guide/profiling.sgml b/ghc/docs/users_guide/profiling.sgml
index 4bb22a1..b89cf65 100644 (file)
--- a/ghc/docs/users_guide/profiling.sgml
+++ b/ghc/docs/users_guide/profiling.sgml
@@ -45,7 +45,7 @@
     
   </orderedlist>
   
-  <sect1>
+  <sect1 id="cost-centres">
     <title>Cost centres and cost-centre stacks</title>
     
     <para>GHC's profiling system assigns <firstterm>costs</firstterm>
@@ -292,6 +292,12 @@ MAIN                     MAIN             0    0.0   0.0    100.0 100.0
          variable.</para></footnote>.  Notice that this is a recursive
          definition.</para>
        </listitem>
+
+       <listitem>
+         <para>Time spent in foreign code (see <xref linkend="ffi">)
+         is always attributed to the cost centre in force at the
+         Haskell call-site of the foreign function.</para>
+       </listitem>
       </itemizedlist>
 
       <para>What do we mean by one-off costs?  Well, Haskell is a lazy
@@ -327,7 +333,6 @@ x = nfib 25
       doesn't look like you expect it to, feel free to send it (and
       your program) to us at
       <email>glasgow-haskell-bugs@haskell.org</email>.</para>
-
     </sect2>
   </sect1>