Add a --log-level option to set the default eal log level.

Signed-off-by: David Marchand <david.marchand at 6wind.com>
---
 lib/librte_eal/bsdapp/eal/eal.c                    |   42 +++++++++++++++++++
 .../bsdapp/eal/include/eal_internal_cfg.h          |    1 +
 lib/librte_eal/linuxapp/eal/eal.c                  |   44 +++++++++++++++++++-
 .../linuxapp/eal/include/eal_internal_cfg.h        |    1 +
 4 files changed, 87 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index 71f93e0..2f84742 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -94,6 +94,7 @@
 #define OPT_PCI_BLACKLIST "pci-blacklist"
 #define OPT_VDEV        "vdev"
 #define OPT_SYSLOG      "syslog"
+#define OPT_LOG_LEVEL   "log-level"

 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)

@@ -293,6 +294,7 @@ eal_usage(const char *prgname)
               "  -v           : Display version information on startup\n"
               "  -m MB        : memory to allocate\n"
               "  -r NUM       : force number of memory ranks (don't detect)\n"
+              "  --"OPT_LOG_LEVEL"  : set default log level\n"
               "  --"OPT_PROC_TYPE"  : type of this process\n"
               "  --"OPT_PCI_BLACKLIST", -b: add a PCI device in black list.\n"
               "               Prevent EAL from using this PCI device. The 
argument\n"
@@ -440,6 +442,28 @@ 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 inline size_t
 eal_get_hugepage_mem_size(void)
 {
@@ -494,6 +518,7 @@ 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},
                {0, 0, 0, 0}
        };

@@ -506,6 +531,8 @@ 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;
 #ifdef RTE_LIBEAL_USE_HPET
        internal_config.no_hpet = 0;
 #else
@@ -652,6 +679,18 @@ 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;
                        }
                        break;

@@ -793,6 +832,9 @@ 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 &&
                        eal_hugepage_info_init() < 0)
diff --git a/lib/librte_eal/bsdapp/eal/include/eal_internal_cfg.h 
b/lib/librte_eal/bsdapp/eal/include/eal_internal_cfg.h
index 2d06c7f..24cefc2 100644
--- a/lib/librte_eal/bsdapp/eal/include/eal_internal_cfg.h
+++ b/lib/librte_eal/bsdapp/eal/include/eal_internal_cfg.h
@@ -75,6 +75,7 @@ struct internal_config {
        volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory 
per socket */
        uintptr_t base_virtaddr;          /**< base address to try and reserve 
memory from */
        volatile int syslog_facility;     /**< facility passed to openlog() */
+       volatile uint32_t log_level;      /**< default log level */
        const char *hugefile_prefix;      /**< the base filename of hugetlbfs 
files */
        const char *hugepage_dir;         /**< specific hugetlbfs directory to 
use */

diff --git a/lib/librte_eal/linuxapp/eal/eal.c 
b/lib/librte_eal/linuxapp/eal/eal.c
index 4869e7c..38cace6 100644
--- 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"
@@ -548,6 +550,28 @@ eal_parse_syslog(const char *facility)
 }

 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)
 {
        char * arg[RTE_MAX_NUMA_NODES];
@@ -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 &&
diff --git a/lib/librte_eal/linuxapp/eal/include/eal_internal_cfg.h 
b/lib/librte_eal/linuxapp/eal/include/eal_internal_cfg.h
index 498ade2..8749390 100644
--- a/lib/librte_eal/linuxapp/eal/include/eal_internal_cfg.h
+++ b/lib/librte_eal/linuxapp/eal/include/eal_internal_cfg.h
@@ -77,6 +77,7 @@ struct internal_config {
        volatile uint64_t socket_mem[RTE_MAX_NUMA_NODES]; /**< amount of memory 
per socket */
        uintptr_t base_virtaddr;          /**< base address to try and reserve 
memory from */
        volatile int syslog_facility;     /**< facility passed to openlog() */
+       volatile uint32_t log_level;      /**< default log level */
        /** default interrupt mode for VFIO */
        volatile enum rte_intr_mode vfio_intr_mode;
        const char *hugefile_prefix;      /**< the base filename of hugetlbfs 
files */
-- 
1.7.10.4

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