contents/reference/lttng-ust/liblttng-ust/liblttng-ust-tracepoint-loglevel.md

   1 ---
   2 id: liblttng-ust-tracepoint-loglevel
   3 ---
   4
   5 The following table shows the available log level values for the
   6 `TRACEPOINT_LOGLEVEL()` macro:
   7
   8 <div class="table">
   9 <table class="func-desc">
  10     <thead>
  11         <tr>
  12             <th>Enum label</th>
  13             <th>Enum value</th>
  14             <th>Description</th>
  15         </tr>
  16     </thead>
  17     <tbody>
  18         <tr>
  19             <td><code class="no-bg">TRACE_EMERG</code></td>
  20             <td>0</td>
  21             <td>System is unusable</td>
  22         </tr>
  23         <tr>
  24             <td><code class="no-bg">TRACE_ALERT</code></td>
  25             <td>1</td>
  26             <td>Action must be taken immediately</td>
  27         </tr>
  28         <tr>
  29             <td><code class="no-bg">TRACE_CRIT</code></td>
  30             <td>2</td>
  31             <td>Critical conditions</td>
  32         </tr>
  33         <tr>
  34             <td><code class="no-bg">TRACE_ERR</code></td>
  35             <td>3</td>
  36             <td>Error conditions</td>
  37         </tr>
  38         <tr>
  39             <td><code class="no-bg">TRACE_WARNING</code></td>
  40             <td>4</td>
  41             <td>Warning conditions</td>
  42         </tr>
  43         <tr>
  44             <td><code class="no-bg">TRACE_NOTICE</code></td>
  45             <td>5</td>
  46             <td>Normal, but significant, condition</td>
  47         </tr>
  48         <tr>
  49             <td><code class="no-bg">TRACE_INFO</code></td>
  50             <td>6</td>
  51             <td>Informational message</td>
  52         </tr>
  53         <tr>
  54             <td><code class="no-bg">TRACE_DEBUG_SYSTEM</code></td>
  55             <td>7</td>
  56             <td>Debug information with system-level scope (set of programs)</td>
  57         </tr>
  58         <tr>
  59             <td><code class="no-bg">TRACE_DEBUG_PROGRAM</code></td>
  60             <td>8</td>
  61             <td>Debug information with program-level scope (set of processes)</td>
  62         </tr>
  63         <tr>
  64             <td><code class="no-bg">TRACE_DEBUG_PROCESS</code></td>
  65             <td>9</td>
  66             <td>Debug information with process-level scope (set of modules)</td>
  67         </tr>
  68         <tr>
  69             <td><code class="no-bg">TRACE_DEBUG_MODULE</code></td>
  70             <td>10</td>
  71             <td>Debug information with module (executable/library) scope (set of units)</td>
  72         </tr>
  73         <tr>
  74             <td><code class="no-bg">TRACE_DEBUG_UNIT</code></td>
  75             <td>11</td>
  76             <td>Debug information with compilation unit scope (set of functions)</td>
  77         </tr>
  78         <tr>
  79             <td><code class="no-bg">TRACE_DEBUG_FUNCTION</code></td>
  80             <td>12</td>
  81             <td>Debug information with function-level scope</td>
  82         </tr>
  83         <tr>
  84             <td><code class="no-bg">TRACE_DEBUG_LINE</code></td>
  85             <td>13</td>
  86             <td>Debug information with line-level scope (<code>TRACEPOINT_EVENT</code> default)</td>
  87         </tr>
  88         <tr>
  89             <td><code class="no-bg">TRACE_DEBUG</code></td>
  90             <td>14</td>
  91             <td>Debug-level message</td>
  92         </tr>
  93     </tbody>
  94 </table>
  95 </div>
  96
  97 Higher log level numbers imply the most verbosity (expect higher tracing
  98 throughput). Log levels 0 through 6 and log level 14 match
  99 <a href="http://man7.org/linux/man-pages/man3/syslog.3.html" class="ext">syslog</a>
 100 level semantics. Log levels 7 through 13 offer more fine-grained
 101 selection of debug information.