Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Ram Pai <linuxram@us.ibm.com>
To:     mpe@ellerman.id.au, mingo@redhat.com, akpm@linux-foundation.org,
        corbet@lwn.net, arnd@arndb.de
Cc:     linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org,
        linux-arch@vger.kernel.org, linux-doc@vger.kernel.org,
        linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
        dave.hansen@intel.com, benh@kernel.crashing.org, paulus@samba.org,
        khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com,
        bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org,
        bauerman@linux.vnet.ibm.com, ebiederm@xmission.com,
        linuxram@us.ibm.com
Subject: [PATCH v9 41/51] selftest/vm: introduce two arch independent abstraction
Date:   Mon,  6 Nov 2017 00:57:33 -0800
Message-Id: <1509958663-18737-42-git-send-email-linuxram@us.ibm.com>
In-Reply-To: <1509958663-18737-1-git-send-email-linuxram@us.ibm.com>
References: <1509958663-18737-1-git-send-email-linuxram@us.ibm.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

open_hugepage_file() <- opens the huge page file
get_start_key() <--  provides the first non-reserved key.

Signed-off-by: Ram Pai <linuxram@us.ibm.com>
---
 tools/testing/selftests/vm/pkey-helpers.h    |   11 +++++++++++
 tools/testing/selftests/vm/protection_keys.c |    6 +++---
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/vm/pkey-helpers.h
index d521f53..30755be 100644
--- a/tools/testing/selftests/vm/pkey-helpers.h
+++ b/tools/testing/selftests/vm/pkey-helpers.h
@@ -301,3 +301,14 @@ static inline void __page_o_noops(void)
 	}					\
 } while (0)
 #define raw_assert(cond) assert(cond)
+
+static inline int open_hugepage_file(int flag)
+{
+	return open("/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages",
+		 O_RDONLY);
+}
+
+static inline int get_start_key(void)
+{
+	return 1;
+}
diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/vm/protection_keys.c
index 1a14027..19ae991 100644
--- a/tools/testing/selftests/vm/protection_keys.c
+++ b/tools/testing/selftests/vm/protection_keys.c
@@ -809,7 +809,7 @@ void setup_hugetlbfs(void)
 	 * Now go make sure that we got the pages and that they
 	 * are 2M pages.  Someone might have made 1G the default.
 	 */
-	fd = open("/sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages", O_RDONLY);
+	fd = open_hugepage_file(O_RDONLY);
 	if (fd < 0) {
 		perror("opening sysfs 2M hugetlb config");
 		return;
@@ -1087,10 +1087,10 @@ void test_kernel_gup_write_to_write_disabled_region(int *ptr, u16 pkey)
 void test_pkey_syscalls_on_non_allocated_pkey(int *ptr, u16 pkey)
 {
 	int err;
-	int i;
+	int i = get_start_key();
 
 	/* Note: 0 is the default pkey, so don't mess with it */
-	for (i = 1; i < NR_PKEYS; i++) {
+	for (; i < NR_PKEYS; i++) {
 		if (pkey == i)
 			continue;
 
-- 
1.7.1


From 1584955083550997535@xxx Fri Nov 24 13:42:35 +0000 2017
X-GM-THRID: 1584680927621956878
X-Gmail-Labels: Inbox,Category Forums,HistoricalUnread