eal: set log level from command line

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal.c

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 4869e7c..38cace6 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -97,6 +97,7 @@
 #define OPT_PCI_BLACKLIST "pci-blacklist"
 #define OPT_VDEV        "vdev"
 #define OPT_SYSLOG      "syslog"
+#define OPT_LOG_LEVEL   "log-level"
 #define OPT_BASE_VIRTADDR   "base-virtaddr"
 #define OPT_XEN_DOM0    "xen-dom0"
 #define OPT_CREATE_UIO_DEV "create-uio-dev"
@@ -384,7 +385,8 @@ eal_usage(const char *prgname)
               "  --"OPT_XEN_DOM0" : support application running on Xen Domain0 "
                           "without hugetlbfs\n"
               "  --"OPT_SYSLOG"     : set syslog facility\n"
-              "  --"OPT_SOCKET_MEM" : memory to allocate on specific \n"
+              "  --"OPT_LOG_LEVEL"  : set default log level\n"
+              "  --"OPT_SOCKET_MEM" : memory to allocate on specific\n"
                   "                 sockets (use comma separated values)\n"
               "  --"OPT_HUGE_DIR"   : directory where hugetlbfs is mounted\n"
               "  --"OPT_PROC_TYPE"  : type of this process\n"
@@ -547,6 +549,28 @@ eal_parse_syslog(const char *facility)
        return -1;
 }
 
+static int
+eal_parse_log_level(const char *level, uint32_t *log_level)
+{
+       char *end;
+       unsigned long tmp;
+
+       errno = 0;
+       tmp = strtoul(level, &end, 0);
+
+       /* check for errors */
+       if ((errno != 0) || (level[0] == '\0') ||
+           end == NULL || (*end != '\0'))
+               return -1;
+
+       /* log_level is a uint32_t */
+       if (tmp >= UINT32_MAX)
+               return -1;
+
+       *log_level = tmp;
+       return 0;
+}
+
 static int
 eal_parse_socket_mem(char *socket_mem)
 {
@@ -699,6 +723,7 @@ eal_parse_args(int argc, char **argv)
                {OPT_PCI_BLACKLIST, 1, 0, 0},
                {OPT_VDEV, 1, 0, 0},
                {OPT_SYSLOG, 1, NULL, 0},
+               {OPT_LOG_LEVEL, 1, NULL, 0},
                {OPT_VFIO_INTR, 1, NULL, 0},
                {OPT_BASE_VIRTADDR, 1, 0, 0},
                {OPT_XEN_DOM0, 0, 0, 0},
@@ -716,6 +741,8 @@ eal_parse_args(int argc, char **argv)
        internal_config.hugepage_dir = NULL;
        internal_config.force_sockets = 0;
        internal_config.syslog_facility = LOG_DAEMON;
+       /* default value from build option */
+       internal_config.log_level = RTE_LOG_LEVEL;
        internal_config.xen_dom0_support = 0;
        /* if set to NONE, interrupt mode is determined automatically */
        internal_config.vfio_intr_mode = RTE_INTR_MODE_NONE;
@@ -887,6 +914,18 @@ eal_parse_args(int argc, char **argv)
                                        eal_usage(prgname);
                                        return -1;
                                }
+                       } else if (!strcmp(lgopts[option_index].name,
+                                        OPT_LOG_LEVEL)) {
+                               uint32_t log;
+
+                               if (eal_parse_log_level(optarg, &log) < 0) {
+                                       RTE_LOG(ERR, EAL,
+                                               "invalid parameters for --"
+                                               OPT_LOG_LEVEL "\n");
+                                       eal_usage(prgname);
+                                       return -1;
+                               }
+                               internal_config.log_level = log;
                        }
                        else if (!strcmp(lgopts[option_index].name, OPT_BASE_VIRTADDR)) {
                                if (eal_parse_base_virtaddr(optarg) < 0) {
@@ -1054,6 +1093,9 @@ rte_eal_init(int argc, char **argv)
        if (fctret < 0)
                exit(1);
 
+       /* set log level as early as possible */
+       rte_set_log_level(internal_config.log_level);
+
        if (internal_config.no_hugetlbfs == 0 &&
                        internal_config.process_type != RTE_PROC_SECONDARY &&
                        internal_config.xen_dom0_support == 0 &&