* [merged] selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random.patch removed from -mm tree
@ 2020-06-05 20:20 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-06-05 20:20 UTC (permalink / raw)
To: aneesh.kumar, bauerman, dave.hansen, desnesn, fweimer, linuxram,
mhocko, mingo, mm-commits, mpe, msuchanek, sandipan, shuah
The patch titled
Subject: selftests/vm/pkeys: fix alloc_random_pkey() to make it really random
has been removed from the -mm tree. Its filename was
selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Ram Pai <linuxram@us.ibm.com>
Subject: selftests/vm/pkeys: fix alloc_random_pkey() to make it really random
alloc_random_pkey() was allocating the same pkey every time. Not all
pkeys were geting tested. This fixes it.
Link: http://lkml.kernel.org/r/0162f55816d4e783a0d6e49e554d0ab9a3c9a23b.1585646528.git.sandipan@linux.ibm.com
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
tools/testing/selftests/vm/protection_keys.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/vm/protection_keys.c~selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random
+++ a/tools/testing/selftests/vm/protection_keys.c
@@ -25,6 +25,7 @@
#define __SANE_USERSPACE_TYPES__
#include <errno.h>
#include <linux/futex.h>
+#include <time.h>
#include <sys/time.h>
#include <sys/syscall.h>
#include <string.h>
@@ -546,10 +547,10 @@ int alloc_random_pkey(void)
int nr_alloced = 0;
int random_index;
memset(alloced_pkeys, 0, sizeof(alloced_pkeys));
+ srand((unsigned int)time(NULL));
/* allocate every possible key and make a note of which ones we got */
max_nr_pkey_allocs = NR_PKEYS;
- max_nr_pkey_allocs = 1;
for (i = 0; i < max_nr_pkey_allocs; i++) {
int new_pkey = alloc_pkey();
if (new_pkey < 0)
_
Patches currently in -mm which might be from linuxram@us.ibm.com are
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2020-06-05 20:20 [merged] selftests-vm-pkeys-fix-alloc_random_pkey-to-make-it-really-random.patch removed from -mm tree akpm
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