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