selftests/mm: va_high_addr_switch: reduce test noise

Patch series "Restructure va_high_addr_switch".

The va_high_addr_switch memory selftest tests out some corner cases
related to allocation and page/hugepage faulting around the switch
boundary.  Currently, the page size and hugepage size have been statically
defined.  Post FEAT_LPA2, the Aarch64 Linux kernel adds support for 4k and
16k translation granules on higher addresses; we restructure the test to
support the same.  In addition, we avoid invocation of the binary twice,
in the shell script, to reduce test noise.

This patch (of 2):

When invoking the binary with "--run-hugetlb" flag, the testcases
involving the base page are anyways going to be run.  Therefore, remove
duplication by invoking the binary only once.

Link: https://lkml.kernel.org/r/20240522070435.773918-1-dev.jain@arm.com
Link: https://lkml.kernel.org/r/20240522070435.773918-2-dev.jain@arm.com
Signed-off-by: Dev Jain <dev.jain@arm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/tools/testing/selftests/mm/va_high_addr_switch.sh b/tools/testing/selftests/mm/va_high_addr_switch.sh
index a0a75f3..2c72577 100755 (executable)
--- a/tools/testing/selftests/mm/va_high_addr_switch.sh
+++ b/tools/testing/selftests/mm/va_high_addr_switch.sh
@@ -57,8 +57,4 @@ check_test_requirements()
 }
 
 check_test_requirements
-./va_high_addr_switch
-
-# In order to run hugetlb testcases, "--run-hugetlb" must be appended
-# to the binary.
 ./va_high_addr_switch --run-hugetlb