trace: add trace configuration parameter

[dpdk.git] / lib / librte_eal / common / eal_common_options.c

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index eaba611..bb6c131 100644 (file)
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -34,6 +34,7 @@
 #include "eal_options.h"
 #include "eal_filesystem.h"
 #include "eal_private.h"
+#include "eal_trace.h"
 
 #define BITS_PER_HEX 4
 #define LCORE_OPT_LST 1
@@ -67,6 +68,7 @@ eal_long_options[] = {
        {OPT_IOVA_MODE,         1, NULL, OPT_IOVA_MODE_NUM        },
        {OPT_LCORES,            1, NULL, OPT_LCORES_NUM           },
        {OPT_LOG_LEVEL,         1, NULL, OPT_LOG_LEVEL_NUM        },
+       {OPT_TRACE,             1, NULL, OPT_TRACE_NUM            },
        {OPT_MASTER_LCORE,      1, NULL, OPT_MASTER_LCORE_NUM     },
        {OPT_MBUF_POOL_OPS_NAME, 1, NULL, OPT_MBUF_POOL_OPS_NAME_NUM},
        {OPT_NO_HPET,           0, NULL, OPT_NO_HPET_NUM          },
@@ -1418,6 +1420,16 @@ eal_parse_common_option(int opt, const char *optarg,
                }
                break;
        }
+
+       case OPT_TRACE_NUM: {
+               if (eal_trace_args_save(optarg) < 0) {
+                       RTE_LOG(ERR, EAL, "invalid parameters for --"
+                               OPT_TRACE "\n");
+                       return -1;
+               }
+               break;
+       }
+
        case OPT_LCORES_NUM:
                if (eal_parse_lcores(optarg) < 0) {
                        RTE_LOG(ERR, EAL, "invalid parameter for --"
@@ -1693,6 +1705,10 @@ eal_common_usage(void)
               "  --"OPT_LOG_LEVEL"=<int>   Set global log level\n"
               "  --"OPT_LOG_LEVEL"=<type-match>:<int>\n"
               "                      Set specific log level\n"
+              "  --"OPT_TRACE"=<regex-match>\n"
+              "                      Enable trace based on regular expression trace name.\n"
+              "                      By default, the trace is disabled.\n"
+              "                      User must specify this option to enable trace.\n"
               "  -v                  Display version information on startup\n"
               "  -h, --help          This help\n"
               "  --"OPT_IN_MEMORY"   Operate entirely in memory. This will\n"