linux-kernel - [PATCH v2 7/8] selftests/vm: run_vmtest.sh: update and clean up gup

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Date:   Tue, 29 Sep 2020 14:27:46 -0700
From:   John Hubbard <jhubbard@...dia.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     Jonathan Corbet <corbet@....net>,
        Jérôme Glisse <jglisse@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Shuah Khan <shuah@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <linux-kselftest@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-s390@...r.kernel.org>, John Hubbard <jhubbard@...dia.com>
Subject: [PATCH v2 7/8] selftests/vm: run_vmtest.sh: update and clean up gup_test invocation

Run benchmarks on the _fast variants of gup and pup, as originally
intended.

Run the new gup_test sub-test: dump pages. In addition to exercising the
dump_page() call, it also demonstrates the various options you can use
to specify which pages to dump, and how.

Signed-off-by: John Hubbard <jhubbard@...dia.com>
---
 tools/testing/selftests/vm/run_vmtest.sh | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/vm/run_vmtest.sh b/tools/testing/selftests/vm/run_vmtest.sh
index d1843d5f3c30..e3a8b14d9df6 100755
--- a/tools/testing/selftests/vm/run_vmtest.sh
+++ b/tools/testing/selftests/vm/run_vmtest.sh
@@ -124,9 +124,9 @@ else
 fi
 
 echo "--------------------------------------------"
-echo "running 'gup_test -U' (normal/slow gup)"
+echo "running 'gup_test -u' (fast gup benchmark)"
 echo "--------------------------------------------"
-./gup_test -U
+./gup_test -u
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
 	exitcode=1
@@ -134,10 +134,22 @@ else
 	echo "[PASS]"
 fi
 
-echo "------------------------------------------"
-echo "running gup_test -b (pin_user_pages)"
-echo "------------------------------------------"
-./gup_test -b
+echo "---------------------------------------------------"
+echo "running gup_test -a (pin_user_pages_fast benchmark)"
+echo "---------------------------------------------------"
+./gup_test -a
+if [ $? -ne 0 ]; then
+	echo "[FAIL]"
+	exitcode=1
+else
+	echo "[PASS]"
+fi
+
+echo "--------------------------------------------------------------"
+echo "running gup_test -ct -F 0x1 0 19 0x1000"
+echo "   Dumps pages 0, 19, and 4096, using pin_user_pages (-F 0x1)"
+echo "--------------------------------------------------------------"
+./gup_test -ct -F 0x1 0 19 0x1000
 if [ $? -ne 0 ]; then
 	echo "[FAIL]"
 	exitcode=1
-- 
2.28.0