Currently rte_eal_check_module() detects Linux kernel modules via reading
/proc/modules. Built-in ones aren't listed there and therefore they are not
being found by the script.
Add support for checking built-in modules with parsing the sysfs files
Signed-off-by: Kamil Rytarowski <Kamil.Rytarowski at caviumnetworks.com>
---
lib/librte_eal/linuxapp/eal/eal.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal.c
b/lib/librte_eal/linuxapp/eal/eal.c
index 635ec36..6cab906 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -52,6 +52,8 @@
#if defined(RTE_ARCH_X86_64) || defined(RTE_ARCH_I686)
#include <sys/io.h>
#endif
+#include <sys/types.h>
+#include <sys/stat.h>
#include <rte_common.h>
#include <rte_debug.h>
@@ -902,7 +904,10 @@ int
rte_eal_check_module(const char *module_name)
{
char mod_name[30]; /* Any module names can be longer than 30 bytes? */
+ char sysfs_mod_name[PATH_MAX];
+ struct stat st;
int ret = 0;
+ int rv;
int n;
if (NULL == module_name)
@@ -918,9 +923,23 @@ rte_eal_check_module(const char *module_name)
n = fscanf(fd, "%29s %*[^\n]", mod_name);
if ((n == 1) && !strcmp(mod_name, module_name)) {
ret = 1;
- break;
+ goto finish;
}
}
+ RTE_LOG(DEBUG, EAL, "Module %s not found in /proc/modules",
+ module_name);
+
+ /* A module might be builtin, try sysfs */
+ snprintf(sysfs_mod_name, PATH_MAX, "/sys/module/%s", module_name);
+ if ((rv = stat(sysfs_mod_name, &st)) == 0) {
+ ret = 1;
+ goto finish;
+ }
+
+ RTE_LOG(DEBUG, EAL, "Open %s failed! error %i (%s)\n",
+ sysfs_mod_name, errno, strerror(errno));
+
+finish:
fclose(fd);
return ret;
--
2.5.0
