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Diffstat (limited to 'doc/SystemTap_Tapset_Reference')
| -rw-r--r-- | doc/SystemTap_Tapset_Reference/en-US/Tapset_Reference.xml | 1 | ||||
| -rw-r--r-- | doc/SystemTap_Tapset_Reference/en-US/memory.xml | 182 |
2 files changed, 183 insertions, 0 deletions
diff --git a/doc/SystemTap_Tapset_Reference/en-US/Tapset_Reference.xml b/doc/SystemTap_Tapset_Reference/en-US/Tapset_Reference.xml index f10159b8..404b6543 100644 --- a/doc/SystemTap_Tapset_Reference/en-US/Tapset_Reference.xml +++ b/doc/SystemTap_Tapset_Reference/en-US/Tapset_Reference.xml @@ -8,6 +8,7 @@ <xi:include href="Preface.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> <xi:include href="Introduction.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> <xi:include href="context.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> +<xi:include href="memory.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> <xi:include href="networking.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> <xi:include href="timestamp.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> <xi:include href="Revision_History.xml" xmlns:xi="http://www.w3.org/2001/XInclude" /> diff --git a/doc/SystemTap_Tapset_Reference/en-US/memory.xml b/doc/SystemTap_Tapset_Reference/en-US/memory.xml new file mode 100644 index 00000000..7bceaa16 --- /dev/null +++ b/doc/SystemTap_Tapset_Reference/en-US/memory.xml @@ -0,0 +1,182 @@ +<?xml version='1.0'?> +<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ +]> +<!-- This file is extracted from the tapset files + Do not modify this file --> +<chapter id="memory_stp"> + <title>Memory Tapset</title> + <para> + This family of probe points is used to probe page fault events. + It contains the following probe points: + </para> +<formalpara id="vm.pagefault"> + <title>vm.pagefault</title> + <indexterm><primary>vm.pagefault</primary></indexterm> + <para> + Records that a page fault occurred. + The context is the process which triggered the fault.</para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para> + The address of the faulting memory access. + </para></listitem> + </varlistentry> + <varlistentry><term>write_access</term> + <listitem><para> + Indicates whether this was a write. + </para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.pagefault.return"> + <title>vm.pagefault.return</title> + <indexterm><primary>vm.pagefault.return</primary></indexterm> + <para> + Records type of fault that occurred. + The context is the process which triggered the fault. + </para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>fault_type</term> + <listitem><para>The possible values of fault_type are: + <table frame='all'><title>Fault values</title> + <tgroup cols='3' align='left' colsep='1' rowsep='1'> + <colspec colname='Define'/> + <colspec colname='Value'/> + <colspec colname='Reason'/> + <thead> + <row><entry>Define</entry><entry>Value</entry><entry>Reason</entry></row> + </thead> + <tbody> + <row> + <entry>VM_FAULT_OOM</entry> + <entry>0</entry> + <entry>out of memory</entry> + </row> + <row> + <entry>VM_FAULT_SIGBUS</entry> + <entry>1</entry> + <entry>if not oom, minor, or major fault, this val</entry> + </row> + <row> + <entry>VM_FAULT_MINOR</entry> + <entry>2</entry> + <entry>no blocking operation to handle fault</entry> + </row> + <row> + <entry>VM_FAULT_MAJOR</entry> + <entry>3</entry> + <entry>required blocking operation to handle fault</entry> + </row> + </tbody> + </tgroup> + </table> + </para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.write_shared"> + <title>vm.write_shared</title> + <indexterm><primary>vm.write_shared</primary></indexterm> + <para> + Fires when a process attempts to write to a shared page. + If a copy is necessary, this will be followed by a + <xref linkend="vm.write_shared_copy"/>. + The context is the process attempting the write. + </para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para>The address of the shared write.</para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.write_shared_copy"> + <title>vm.write_shared_copy</title> + <indexterm><primary>vm.write_shared_copy</primary></indexterm> + <para> + Fires when a write to a shared page requires a page copy. + This is always preceded by a <xref linkend="vm.write_shared"/>. + The context is the process attempting the write. +</para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para> + The address of the shared write. + </para></listitem> + </varlistentry> + <varlistentry><term>zero</term> + <listitem><para> + Boolean indicating whether it is a zero page + (can do a clear instead of a copy). + </para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.mmap"> + <title>vm.mmap</title> + <indexterm><primary>vm.mmap</primary></indexterm> + <para> + Fires when an mmap is requested. + The context is the process calling mmap. + </para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para>The requested address.</para></listitem> + </varlistentry> + <varlistentry><term>length</term> + <listitem><para>The length of the memory segment.</para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.munmap"> + <title>vm.munmap</title> + <indexterm><primary>vm.munmap</primary></indexterm> + <para>Fires when an munmap is requested.</para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para>The requested address.</para></listitem> + </varlistentry> + <varlistentry><term>length</term> + <listitem><para>The length of the memory segment.</para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.brk"> + <title>vm.brk</title> + <indexterm><primary>vm.brk</primary></indexterm> + <para>Fires when a brk is requested (resizing a heap).</para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>address</term> + <listitem><para>The requested address.</para></listitem> + </varlistentry> + <varlistentry><term>length</term> + <listitem><para>The length of the memory segment.</para></listitem> + </varlistentry> + </variablelist> +</para> +<formalpara id="vm.oom_kill"> + <title>vm.oom_kill</title> + <indexterm><primary>vm.oom_kill</primary></indexterm> + <para>Fires when a thread is targetted by the OOM killer.</para> +</formalpara> +<para> + <variablelist><title>Arguments:</title> + <varlistentry><term>task</term> + <listitem><para>The task being killed.</para></listitem> + </varlistentry> + </variablelist> +</para> +</chapter> |