@@ -326,8 +326,10 @@ eal_parse_args(int argc, char **argv)
int ret;
/* getopt is not happy, stop right now */
- if (opt == '?')
+ if (opt == '?') {
+ eal_usage(prgname);
return -1;
+ }
ret = eal_parse_common_option(opt, optarg, &internal_config);
/* common parser is not happy */
@@ -340,6 +342,9 @@ eal_parse_args(int argc, char **argv)
continue;
switch (opt) {
+ case 'h':
+ eal_usage(prgname);
+ exit(EXIT_SUCCESS);
default:
if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
RTE_LOG(ERR, EAL, "Option %c is not supported "
@@ -57,6 +57,7 @@ eal_short_options[] =
"b:" /* pci-blacklist */
"c:" /* coremask */
"d:" /* driver */
+ "h" /* help */
"l:" /* corelist */
"m:" /* memory size */
"n:" /* memory channels */
@@ -70,6 +71,7 @@ eal_long_options[] = {
{OPT_BASE_VIRTADDR, 1, NULL, OPT_BASE_VIRTADDR_NUM },
{OPT_CREATE_UIO_DEV, 1, NULL, OPT_CREATE_UIO_DEV_NUM },
{OPT_FILE_PREFIX, 1, NULL, OPT_FILE_PREFIX_NUM },
+ {OPT_HELP, 0, NULL, OPT_HELP_NUM },
{OPT_HUGE_DIR, 1, NULL, OPT_HUGE_DIR_NUM },
{OPT_LOG_LEVEL, 1, NULL, OPT_LOG_LEVEL_NUM },
{OPT_MASTER_LCORE, 1, NULL, OPT_MASTER_LCORE_NUM },
@@ -605,6 +607,7 @@ eal_common_usage(void)
" --"OPT_SYSLOG" Set syslog facility\n"
" --"OPT_LOG_LEVEL" Set default log level\n"
" -v Display version information on startup\n"
+ " -h, --help This help\n"
"\nEAL options for DEBUG use only:\n"
" --"OPT_NO_HUGE" Use malloc instead of hugetlbfs\n"
" --"OPT_NO_PCI" Disable PCI\n"
@@ -35,6 +35,8 @@
enum {
/* long options mapped to a short option */
+#define OPT_HELP "help"
+ OPT_HELP_NUM = 'h',
#define OPT_PCI_BLACKLIST "pci-blacklist"
OPT_PCI_BLACKLIST_NUM = 'b',
#define OPT_PCI_WHITELIST "pci-whitelist"
@@ -520,8 +520,10 @@ eal_parse_args(int argc, char **argv)
int ret;
/* getopt is not happy, stop right now */
- if (opt == '?')
+ if (opt == '?') {
+ eal_usage(prgname);
return -1;
+ }
ret = eal_parse_common_option(opt, optarg, &internal_config);
/* common parser is not happy */
@@ -534,6 +536,10 @@ eal_parse_args(int argc, char **argv)
continue;
switch (opt) {
+ case 'h':
+ eal_usage(prgname);
+ exit(EXIT_SUCCESS);
+
/* force loading of external driver */
case 'd':
solib = malloc(sizeof(*solib));