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From 421dbc6d9dfc66f249dde787a69327d22979ca74 Mon Sep 17 00:00:00 2001
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Message-Id: <421dbc6d9dfc66f249dde787a69327d22979ca74.1566225007.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: Fri, 16 Aug 2019 11:45:07 +0530
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Subject: [RHEL7 PATCH 17/31] tests: Update utility to get free and total huge
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pages by size
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This makes the utilities to get the number of free and total
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huge pages multi-size aware. If a page size is specified, they
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will return counts corresponding to that. Otherwise, they will
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return counts for the kernel's default huge page size.
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Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
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Signed-off-by: Eric B Munson <eric@munsonfam.org>
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Signed-off-by: Rafael Aquini <aquini@redhat.com>
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---
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tests/run_tests.py | 30 ++++++++++++++++++------------
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1 file changed, 18 insertions(+), 12 deletions(-)
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diff --git a/tests/run_tests.py b/tests/run_tests.py
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index 94000ea..f19024f 100755
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--- a/tests/run_tests.py
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+++ b/tests/run_tests.py
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@@ -172,26 +172,32 @@ def results_summary():
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print_per_size("Strange test result", R["strange"])
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print "**********"
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-def free_hpages():
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+def free_hpages(size=None):
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"""
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- Return the number of free huge pages.
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+ Return the number of free huge pages for a given size. If size is not
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+ passed, use the default huge page size.
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- Parse /proc/meminfo to obtain the number of free huge pages for
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- the default page size.
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- XXX: This function is not multi-size aware yet.
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+ Parse /sys/kernel/mm/hugepages/hugepages-<size-in-kB>/free_hugepages to
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+ obtain the number of free huge pages for the given page size.
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"""
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- (rc, out) = bash("grep 'HugePages_Free:' /proc/meminfo | cut -f2 -d:")
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+ if size == None: size = system_default_hpage_size
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+ size_kb = size / 1024
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+ cmd = "cat /sys/kernel/mm/hugepages/hugepages-%dkB/free_hugepages" % size_kb
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+ (rc, out) = bash(cmd)
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return (rc, int(out))
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-def total_hpages():
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+def total_hpages(size=None):
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"""
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- Return the total number of huge pages in the pool.
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+ Return the total number of huge pages in the pool for a given size. If
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+ size is not passed, use the default huge page size.
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- Parse /proc/meminfo to obtain the number of huge pages for the default
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- page size.
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- XXX: This function is not multi-size aware yet.
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+ Parse /sys/kernel/mm/hugepages/hugepages-<size-in-kB>/nr_hugepages to
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+ obtain the number of huge pages for the given page size.
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"""
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- (rc, out) = bash("grep 'HugePages_Total:' /proc/meminfo | cut -f2 -d:")
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+ if size == None: size = system_default_hpage_size
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+ size_kb = size / 1024
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+ cmd = "cat /sys/kernel/mm/hugepages/hugepages-%dkB/nr_hugepages" % size_kb
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+ (rc, out) = bash(cmd)
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return (rc, int(out))
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def hpage_size():
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--
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1.8.3.1
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