[libvirt] [PATCH 2/2] util: numa: Stub out hugepage code on non-Linux platforms
The hugepage sizing and counting code gathers the information from sysfs
and thus isn't portable. Stub it out for non-Linux so that we can report
a better error. This patch also avoids calling sysinfo() on Mingw where
it isn't supported.
---
src/util/virnuma.c | 46 ++++++++++++++++++++++++++++++++++++++--------
1 file changed, 38 insertions(+), 8 deletions(-)
diff --git a/src/util/virnuma.c b/src/util/virnuma.c
index 9cf5a75..9cf9686 100644
--- a/src/util/virnuma.c
+++ b/src/util/virnuma.c
@@ -512,9 +512,12 @@ virNumaGetDistances(int node ATTRIBUTE_UNUSED,
#endif
-#define HUGEPAGES_NUMA_PREFIX "/sys/devices/system/node/"
-#define HUGEPAGES_SYSTEM_PREFIX "/sys/kernel/mm/hugepages/"
-#define HUGEPAGES_PREFIX "hugepages-"
+/* currently all the hugepage stuff below is linux only */
+#if WITH_LINUX
+
+# define HUGEPAGES_NUMA_PREFIX "/sys/devices/system/node/"
+# define HUGEPAGES_SYSTEM_PREFIX "/sys/kernel/mm/hugepages/"
+# define HUGEPAGES_PREFIX "hugepages-"
static int
virNumaGetHugePageInfoPath(char **path,
@@ -663,7 +666,7 @@ virNumaGetPageInfo(int node,
/* sysconf() returns page size in bytes,
* the @page_size is however in kibibytes */
if (page_size == system_page_size / 1024) {
-#if 0
+# if 0
unsigned long long memsize, memfree;
/* TODO: come up with better algorithm that takes huge pages into
@@ -681,11 +684,11 @@ virNumaGetPageInfo(int node,
if (page_free)
*page_free = memfree / system_page_size;
-#else
+# else
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("system page size are not supported yet"));
goto cleanup;
-#endif /* 0 */
+# endif /* 0 */
} else {
if (virNumaGetHugePageInfo(node, page_size, page_avail, page_free) < 0)
goto cleanup;
@@ -735,7 +738,7 @@ virNumaGetPages(int node,
size_t i;
bool exchange;
-#if 0
+# if 0
/* This has to be disabled until the time the issue in
* virNumaGetPageInfo is resolved. Sorry. */
long system_page_size;
@@ -756,7 +759,7 @@ virNumaGetPages(int node,
goto cleanup;
tmp_size[ntmp] = system_page_size;
ntmp++;
-#endif /* 0 */
+# endif /* 0 */
/* Now that we got ordinary system pages, lets get info on huge pages */
if (virNumaGetHugePageInfoPath(&path, node, 0, NULL) < 0)
@@ -844,3 +847,30 @@ virNumaGetPages(int node,
VIR_FREE(path);
return ret;
}
+
+
+#else /* #if WITH_LINUX */
+int
+virNumaGetPageInfo(int node ATTRIBUTE_UNUSED,
+ unsigned int page_size ATTRIBUTE_UNUSED,
+ unsigned int *page_avail ATTRIBUTE_UNUSED,
+ unsigned int *page_free ATTRIBUTE_UNUSED)
+{
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("system page size are not supported for this platform"));
+ return -1;
+}
+
+
+int
+virNumaGetPages(int node ATTRIBUTE_UNUSED,
+ unsigned int **pages_size ATTRIBUTE_UNUSED,
+ unsigned int **pages_avail ATTRIBUTE_UNUSED,
+ unsigned int **pages_free ATTRIBUTE_UNUSED,
+ size_t *npages ATTRIBUTE_UNUSED)
+{
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("system page size are not supported for this platform"));
+ return -1;
+}
+#endif /* #if WITH_LINUX */
--
1.9.3