60 lines
1.8 KiB
Diff
60 lines
1.8 KiB
Diff
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From a4879cc4f88b560958950d9277ba0df487b145f4 Mon Sep 17 00:00:00 2001
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Message-Id: <a4879cc4f88b560958950d9277ba0df487b145f4.1566225007.git.aquini@redhat.com>
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In-Reply-To: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
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References: <d42f467a923dfc09309acb7a83b42e3285fbd8f4.1566225007.git.aquini@redhat.com>
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From: Sandipan Das <sandipan@linux.ibm.com>
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Date: Thu, 15 Aug 2019 13:08:36 +0530
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Subject: [RHEL7 PATCH 09/31] tests: Add utility to check if huge pages are
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gigantic
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This adds a test utility to check if the currently selected
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huge page size corresponds to that of a gigantic page.
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Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
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Signed-off-by: Eric B Munson <emunson@mgebm.net>
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Signed-off-by: Rafael Aquini <aquini@redhat.com>
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---
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tests/hugetests.h | 19 +++++++++++++++++++
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1 file changed, 19 insertions(+)
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diff --git a/tests/hugetests.h b/tests/hugetests.h
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index e3179e6..bc4e16a 100644
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--- a/tests/hugetests.h
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+++ b/tests/hugetests.h
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@@ -22,6 +22,7 @@
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#include <errno.h>
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#include <string.h>
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+#include <unistd.h>
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#include "libhugetlbfs_privutils.h"
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#include "libhugetlbfs_testprobes.h"
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@@ -136,6 +137,24 @@ static inline long check_hugepagesize()
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return __hpage_size;
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}
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+static inline void check_if_gigantic_page(void)
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+{
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+ long page_size, hpage_size, max_order;
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+ FILE *fp;
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+
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+ page_size = sysconf(_SC_PAGESIZE);
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+ hpage_size = gethugepagesize();
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+ fp = popen("cat /proc/pagetypeinfo | "
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+ "awk '/Free pages count per migrate type at order/ "
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+ "{print $NF}'", "r");
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+ if (!fp || fscanf(fp, "%lu", &max_order) < 0)
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+ FAIL("Couldn't determine max page allocation order");
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+
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+ pclose(fp);
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+ if (hpage_size > ((1 << max_order) * page_size))
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+ CONFIG("Gigantic pages are not supported");
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+}
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+
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int using_system_hpage_size(const char *mount);
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/* WARNING: Racy -- use for test cases only! */
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--
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1.8.3.1
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