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authorhunt <hunt>2005-03-22 18:36:50 +0000
committerhunt <hunt>2005-03-22 18:36:50 +0000
commite94cb46c2219da504a559d49eeda3e4134b96453 (patch)
tree8ace56077fbeef519ba8e4283d358f3c1053571c /runtime/docs/html/probes_8c-source.html
parentb9c556e44326b40b2c927a0a5b5626332a8c9587 (diff)
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@@ -5,87 +5,108 @@
</head><body>
<!-- Generated by Doxygen 1.4.1 -->
<div class="qindex"><a class="qindex" href="index.html">Main&nbsp;Page</a> | <a class="qindex" href="annotated.html">Data&nbsp;Structures</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="functions.html">Data&nbsp;Fields</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related&nbsp;Pages</a></div>
-<h1>probes.c</h1><div class="fragment"><pre class="fragment">00001 <span class="comment">/* -*- linux-c -*- */</span>
-00002 <span class="comment"></span>
-00003 <span class="comment">/** Create a new map.</span>
-00004 <span class="comment"> * Maps must be created at module initialization time.</span>
-00005 <span class="comment"> * @param max_entries The maximum number of entries allowed. Currently that </span>
-00006 <span class="comment"> * will be allocated dynamically.</span>
-00007 <span class="comment"> * @param type Type of values stored in this map. </span>
-00008 <span class="comment"> * @return A MAP on success or NULL on failure.</span>
-00009 <span class="comment"> */</span>
-00010
-00011
-00012 <span class="keyword">static</span> <span class="keywordtype">unsigned</span> long (*_stp_lookup_name)(<span class="keywordtype">char</span> *name)=(<span class="keywordtype">void</span> *)KALLSYMS_LOOKUP_NAME;
-00013
-00014 <span class="keywordtype">void</span> _stp_unregister_jprobes (<span class="keyword">struct</span> jprobe *probes, <span class="keywordtype">int</span> num_probes)
-00015 {
-00016 <span class="keywordtype">int</span> i;
-00017 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++)
-00018 unregister_jprobe(&amp;probes[i]);
-00019 dlog ("All jprobes removed\n");
-00020 }
-00021
-00022 <span class="keywordtype">int</span> _stp_register_jprobes (struct jprobe *probes, <span class="keywordtype">int</span> num_probes)
-00023 {
-00024 <span class="keywordtype">int</span> i, ret ;
-00025 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00026
-00027 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++) {
-00028 addr =_stp_lookup_name((<span class="keywordtype">char</span> *)probes[i].kp.addr);
-00029 <span class="keywordflow">if</span> (addr == 0) {
-00030 dlog (<span class="stringliteral">"ERROR: function %s not found!\n"</span>,
-00031 (<span class="keywordtype">char</span> *)probes[i].kp.addr);
-00032 ret = -1; <span class="comment">/* FIXME */</span>
-00033 <span class="keywordflow">goto</span> out;
-00034 }
-00035 dlog(<span class="stringliteral">"inserting jprobe at %s (%p)\n"</span>, probes[i].kp.addr, addr);
-00036 probes[i].kp.addr = (kprobe_opcode_t *)addr;
-00037 ret = register_jprobe(&amp;probes[i]);
-00038 <span class="keywordflow">if</span> (ret)
-00039 goto out;
-00040 }
-00041 return 0;
-00042 out:
-00043 dlog ("probe module initialization failed. Exiting...\n");
-00044 _stp_unregister_jprobes(probes, i);
-00045 return ret;
-00046 }
-00047
-00048 <span class="keywordtype">void</span> _stp_unregister_kprobes (struct kprobe *probes, <span class="keywordtype">int</span> num_probes)
-00049 {
-00050 <span class="keywordtype">int</span> i;
-00051 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++)
-00052 unregister_kprobe(&amp;probes[i]);
-00053 dlog ("All kprobes removed\n");
-00054 }
-00055
-00056 <span class="keywordtype">int</span> _stp_register_kprobes (struct kprobe *probes, <span class="keywordtype">int</span> num_probes)
-00057 {
-00058 <span class="keywordtype">int</span> i, ret ;
-00059 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
-00060
-00061 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++) {
-00062 addr =_stp_lookup_name((<span class="keywordtype">char</span> *)probes[i].addr);
-00063 <span class="keywordflow">if</span> (addr == 0) {
-00064 dlog (<span class="stringliteral">"ERROR: function %s not found!\n"</span>,
-00065 (<span class="keywordtype">char</span> *)probes[i].addr);
-00066 ret = -1; <span class="comment">/* FIXME */</span>
-00067 <span class="keywordflow">goto</span> out;
-00068 }
-00069 dlog(<span class="stringliteral">"inserting kprobe at %s (%p)\n"</span>, probes[i].addr, addr);
-00070 probes[i].addr = (kprobe_opcode_t *)addr;
-00071 ret = register_kprobe(&amp;probes[i]);
-00072 <span class="keywordflow">if</span> (ret)
-00073 goto out;
-00074 }
-00075 return 0;
-00076 out:
-00077 dlog ("probe module initialization failed. Exiting...\n");
-00078 _stp_unregister_kprobes(probes, i);
-00079 return ret;
-00080 }
+<h1>probes.c</h1><a href="probes_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/* -*- linux-c -*- */</span><span class="comment"></span>
+00002 <span class="comment">/** @file probes.c</span>
+00003 <span class="comment"> * @brief Functions to assist loading and unloading groups of probes.</span>
+00004 <span class="comment"> */</span>
+00005 <span class="comment"></span>
+00006 <span class="comment">/** Lookup name.</span>
+00007 <span class="comment"> * This simply calls the kernel function kallsyms_lookup_name().</span>
+00008 <span class="comment"> * That function is not exported, so this workaround is required.</span>
+00009 <span class="comment"> * See the kernel source, kernel/kallsyms.c for more information.</span>
+00010 <span class="comment"> */</span>
+<a name="l00011"></a><a class="code" href="probes_8c.html#a0">00011</a> <span class="keyword">static</span> <span class="keywordtype">unsigned</span> long (*_stp_lookup_name)(<span class="keywordtype">char</span> *name)=(<span class="keywordtype">void</span> *)KALLSYMS_LOOKUP_NAME;
+00012 <span class="comment"></span>
+00013 <span class="comment">/** Unregister a group of jprobes.</span>
+00014 <span class="comment"> * @param probes Pointer to an array of struct jprobe.</span>
+00015 <span class="comment"> * @param num_probes Number of probes in the array.</span>
+00016 <span class="comment"> */</span>
+00017
+<a name="l00018"></a><a class="code" href="probes_8c.html#a1">00018</a> <span class="keywordtype">void</span> <a class="code" href="probes_8c.html#a1">_stp_unregister_jprobes</a> (<span class="keyword">struct</span> jprobe *probes, <span class="keywordtype">int</span> num_probes)
+00019 {
+00020 <span class="keywordtype">int</span> i;
+00021 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++)
+00022 unregister_jprobe(&amp;probes[i]);
+00023 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"All jprobes removed\n"</span>);
+00024 }
+00025 <span class="comment"></span>
+00026 <span class="comment">/** Register a group of jprobes.</span>
+00027 <span class="comment"> * @param probes Pointer to an array of struct jprobe.</span>
+00028 <span class="comment"> * @param num_probes Number of probes in the array.</span>
+00029 <span class="comment"> * @return 0 on success.</span>
+00030 <span class="comment"> */</span>
+00031
+<a name="l00032"></a><a class="code" href="probes_8c.html#a2">00032</a> <span class="keywordtype">int</span> <a class="code" href="probes_8c.html#a2">_stp_register_jprobes</a> (<span class="keyword">struct</span> jprobe *probes, <span class="keywordtype">int</span> num_probes)
+00033 {
+00034 <span class="keywordtype">int</span> i, ret ;
+00035 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
+00036
+00037 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++) {
+00038 addr =<a class="code" href="probes_8c.html#a0">_stp_lookup_name</a>((<span class="keywordtype">char</span> *)probes[i].kp.addr);
+00039 <span class="keywordflow">if</span> (addr == 0) {
+00040 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"ERROR: function %s not found!\n"</span>,
+00041 (<span class="keywordtype">char</span> *)probes[i].kp.addr);
+00042 ret = -1; <span class="comment">/* FIXME */</span>
+00043 <span class="keywordflow">goto</span> out;
+00044 }
+00045 <a class="code" href="io_8c.html#a4">dlog</a>(<span class="stringliteral">"inserting jprobe at %s (%p)\n"</span>, probes[i].kp.addr, addr);
+00046 probes[i].kp.addr = (kprobe_opcode_t *)addr;
+00047 ret = register_jprobe(&amp;probes[i]);
+00048 <span class="keywordflow">if</span> (ret)
+00049 <span class="keywordflow">goto</span> out;
+00050 }
+00051 <span class="keywordflow">return</span> 0;
+00052 out:
+00053 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"probe module initialization failed. Exiting...\n"</span>);
+00054 <a class="code" href="probes_8c.html#a1">_stp_unregister_jprobes</a>(probes, i);
+00055 <span class="keywordflow">return</span> ret;
+00056 }
+00057 <span class="comment"></span>
+00058 <span class="comment">/** Unregister a group of kprobes.</span>
+00059 <span class="comment"> * @param probes Pointer to an array of struct kprobe.</span>
+00060 <span class="comment"> * @param num_probes Number of probes in the array.</span>
+00061 <span class="comment"> */</span>
+00062
+<a name="l00063"></a><a class="code" href="probes_8c.html#a3">00063</a> <span class="keywordtype">void</span> <a class="code" href="probes_8c.html#a3">_stp_unregister_kprobes</a> (<span class="keyword">struct</span> kprobe *probes, <span class="keywordtype">int</span> num_probes)
+00064 {
+00065 <span class="keywordtype">int</span> i;
+00066 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++)
+00067 unregister_kprobe(&amp;probes[i]);
+00068 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"All kprobes removed\n"</span>);
+00069 }
+00070 <span class="comment"></span>
+00071 <span class="comment">/** Register a group of kprobes.</span>
+00072 <span class="comment"> * @param probes Pointer to an array of struct kprobe.</span>
+00073 <span class="comment"> * @param num_probes Number of probes in the array.</span>
+00074 <span class="comment"> * @return 0 on success.</span>
+00075 <span class="comment"> */</span>
+00076
+<a name="l00077"></a><a class="code" href="probes_8c.html#a4">00077</a> <span class="keywordtype">int</span> <a class="code" href="probes_8c.html#a4">_stp_register_kprobes</a> (<span class="keyword">struct</span> kprobe *probes, <span class="keywordtype">int</span> num_probes)
+00078 {
+00079 <span class="keywordtype">int</span> i, ret ;
+00080 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> addr;
00081
+00082 <span class="keywordflow">for</span> (i = 0; i &lt; num_probes; i++) {
+00083 addr =<a class="code" href="probes_8c.html#a0">_stp_lookup_name</a>((<span class="keywordtype">char</span> *)probes[i].addr);
+00084 <span class="keywordflow">if</span> (addr == 0) {
+00085 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"ERROR: function %s not found!\n"</span>,
+00086 (<span class="keywordtype">char</span> *)probes[i].addr);
+00087 ret = -1; <span class="comment">/* FIXME */</span>
+00088 <span class="keywordflow">goto</span> out;
+00089 }
+00090 <a class="code" href="io_8c.html#a4">dlog</a>(<span class="stringliteral">"inserting kprobe at %s (%p)\n"</span>, probes[i].addr, addr);
+00091 probes[i].addr = (kprobe_opcode_t *)addr;
+00092 ret = register_kprobe(&amp;probes[i]);
+00093 <span class="keywordflow">if</span> (ret)
+00094 <span class="keywordflow">goto</span> out;
+00095 }
+00096 <span class="keywordflow">return</span> 0;
+00097 out:
+00098 <a class="code" href="io_8c.html#a4">dlog</a> (<span class="stringliteral">"probe module initialization failed. Exiting...\n"</span>);
+00099 <a class="code" href="probes_8c.html#a3">_stp_unregister_kprobes</a>(probes, i);
+00100 <span class="keywordflow">return</span> ret;
+00101 }
+00102
</pre></div><hr size="1"><address style="align: right;"><small>
-Generated on Tue Mar 22 00:32:02 2005 for SystemTap.</small></body>
+Generated on Tue Mar 22 10:27:36 2005 for SystemTap.</small></body>
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