[PATCH v3 2/8] eal: dump registered log types

[Olivier Matz <olivier.matz@6wind.com>]

Introduce a function to dump the global level and the registered log
types.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |  1 +
 lib/librte_eal/common/eal_common_log.c          | 34 +++++++++++++++++++++++++
 lib/librte_eal/common/include/rte_log.h         | 10 ++++++++
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |  1 +
 4 files changed, 46 insertions(+)

diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index df859666d..bd63ea66b 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -186,6 +186,7 @@ DPDK_17.02 {
 DPDK_17.05 {
 	global:
 
+	rte_log_dump;
 	rte_log_register;
 	rte_log_set_level;
 
diff --git a/lib/librte_eal/common/eal_common_log.c b/lib/librte_eal/common/eal_common_log.c
index 68d879ae2..90326215b 100644
--- a/lib/librte_eal/common/eal_common_log.c
+++ b/lib/librte_eal/common/eal_common_log.c
@@ -243,6 +243,40 @@ rte_log_init(void)
 	rte_logs.dynamic_types_len = RTE_LOGTYPE_FIRST_EXT_ID;
 }
 
+static const char *
+loglevel_to_string(uint32_t level)
+{
+	switch (level) {
+	case RTE_LOG_EMERG: return "emerg";
+	case RTE_LOG_ALERT: return "alert";
+	case RTE_LOG_CRIT: return "critical";
+	case RTE_LOG_ERR: return "error";
+	case RTE_LOG_WARNING: return "warning";
+	case RTE_LOG_NOTICE: return "notice";
+	case RTE_LOG_INFO: return "info";
+	case RTE_LOG_DEBUG: return "debug";
+	default: return "unknown";
+	}
+}
+
+/* dump global level and registered log types */
+void
+rte_log_dump(FILE *f)
+{
+	size_t i;
+
+	fprintf(f, "global log level is %s\n",
+		loglevel_to_string(rte_get_log_level()));
+
+	for (i = 0; i < rte_logs.dynamic_types_len; i++) {
+		if (rte_logs.dynamic_types[i].name == NULL)
+			continue;
+		fprintf(f, "id %zu: %s, level is %s\n",
+			i, rte_logs.dynamic_types[i].name,
+			loglevel_to_string(rte_logs.dynamic_types[i].loglevel));
+	}
+}
+
 /*
  * Generates a log message The message will be sent in the stream
  * defined by the previous call to rte_openlog_stream().
diff --git a/lib/librte_eal/common/include/rte_log.h b/lib/librte_eal/common/include/rte_log.h
index e71887fca..97e0c5e52 100644
--- a/lib/librte_eal/common/include/rte_log.h
+++ b/lib/librte_eal/common/include/rte_log.h
@@ -209,6 +209,16 @@ int rte_log_cur_msg_logtype(void);
 int rte_log_register(const char *name);
 
 /**
+ * Dump log information.
+ *
+ * Dump the global level and the registered log types.
+ *
+ * @param f
+ *   The output stream where the dump should be sent.
+ */
+void rte_log_dump(FILE *f);
+
+/**
  * Generates a log message.
  *
  * The message will be sent in the stream defined by the previous call
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index f75f52efb..ef48500e9 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -190,6 +190,7 @@ DPDK_17.02 {
 DPDK_17.05 {
 	global:
 
+	rte_log_dump;
 	rte_log_register;
 	rte_log_set_level;
 
-- 
2.11.0